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border="0" cellspacing="0" cellpadding="0"> <tr> <th width="19%" height="24">产品名称?/th> <td width="81%"><span id="nesttitle">SD3200微波TV收发系统</span></td> </tr> <tr> <th height="24">产品型号?/th> <td></td> </tr> <tr> <th height="24" >产品简介:</th> <td><p></p></td> </tr> </table> </div></td> </tr> </table> <div class="content" > <h2><span>详细说明</span></h2> <div class="detail"> <p style="line-height:24px;"><p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">主要特点</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">该系统是?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">SD3200R/T</span><span style="font-size:9pt;font-family:宋体;">收发系统?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">SD3200H</span><span style="font-size:9pt;font-family:宋体;">微波电路测试模块箱组?/span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:Arial, sans-serif;">SD3200R/T</span><span style="font-size:9pt;font-family:宋体;">收发系统?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">SD3200T</span><span style="font-size:9pt;font-family:宋体;">发射系统?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">SD3200R</span><span style="font-size:9pt;font-family:宋体;">接收系统组成,具有六个载频(</span><span style="font-size:9pt;font-family:Arial, sans-serif;">900MHz</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">892MHz</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">884MHz</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">876MHz</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">868MHz</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">860MHz</span><span style="font-size:9pt;font-family:宋体;">),频率间隔?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">8MHz</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">收发系统均以模块形式,便于组合,并具有检测点</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">本振源采用高稳定度锁相振荡器,使产生的图像、语音清晰稳?/span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:Arial, sans-serif;">SD3200MW</span><span style="font-size:9pt;font-family:宋体;">微波电路测试模块箱是?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">14</span><span style="font-size:9pt;font-family:宋体;">种实用的微波电路模块及器件组成,可进行单元电路及器件测试,还可组?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">830MHz</span><span style="font-size:9pt;font-family:宋体;">微波收发系统和微型直放站,开展无线微波通信传输试验</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:Arial, sans-serif;"> </span><span style="font-size:9pt;font-family:宋体;">可提供微波电路、元器件、结构件和电路板等,用于开展微波电路及微波通信系统的课程设计和毕业设计</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:Arial, sans-serif;"> </span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">主要技术指?/span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:Arial, sans-serif;"> </span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <table class="MsoNormalTable" border="1" cellspacing="0" cellpadding="0"> <tbody> <tr> <td width="149" rowspan="2"> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:Arial, sans-serif;">SD3200</span><span style="font-size:9pt;font-family:宋体;">收发系统的传输特?/span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> </td> <td width="113"> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">有效?/span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> </td> <td width="388"> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">每一信道?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">8MHz</span><span style="font-size:9pt;font-family:宋体;">,总共</span><span style="font-size:9pt;font-family:Arial, sans-serif;">6</span><span style="font-size:9pt;font-family:宋体;">个信道,其传输频带为</span><span style="font-size:9pt;font-family:Arial, sans-serif;">40MHz</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> </td> </tr> <tr> <td width="113"> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">可靠?/span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> </td> <td width="388"> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">分别工作?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">CH1</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">CH2</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">CH3</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">CH4</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">CH5</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">CH6</span><span style="font-size:9pt;font-family:宋体;">载频信道上,?/span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">测显示器显示图象和话音的质量</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">传输距离范围?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">3m</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">6m</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> </td> </tr> <tr> <td width="149" rowspan="6"> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:Arial, sans-serif;">SD3200T</span><span style="font-size:9pt;font-family:宋体;">发射系统</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> </td> <td width="113"> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">输出功率</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> </td> <td width="388"> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:Arial, sans-serif;">?5dBm</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> </td> </tr> <tr> <td width="113"> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:Arial, sans-serif;">1dB</span><span style="font-size:9pt;font-family:宋体;">压缩点功?/span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> </td> <td width="388"> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:Arial, sans-serif;">?7dBm</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> </td> </tr> <tr> <td width="113"> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">输出载频</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> </td> <td width="388"> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:Arial, sans-serif;">900MHz</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">892MHz</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">884MHz</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">876MHz</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">868MHz</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">860MHz</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> </td> </tr> <tr> <td width="113"> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">载波抑制</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> </td> <td width="388"> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:Arial, sans-serif;">?40dBm</span><span style="font-size:9pt;font-family:宋体;">(对</span><span style="font-size:9pt;font-family:Arial, sans-serif;">960MHz</span><span style="font-size:9pt;font-family:宋体;">本振频率的抑制)</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> </td> </tr> <tr> <td width="113"> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">底部噪声</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> </td> <td width="388"> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:Arial, sans-serif;">?/span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">50dBm</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> </td> </tr> <tr> <td width="113"> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">调制特?/span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> </td> <td width="388"> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">已调(调幅)的载频的调幅电平大于</span><span style="font-size:9pt;font-family:Arial, sans-serif;">30dB</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> </td> </tr> <tr> <td width="149" rowspan="3"> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:Arial, sans-serif;">SD3200R</span><span style="font-size:9pt;font-family:宋体;">接收系统</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> </td> <td width="113"> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">接收灵敏?/span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> </td> <td width="388"> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:Arial, sans-serif;">?/span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">40dBm</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> </td> </tr> <tr> <td width="113"> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">选择?/span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> </td> <td width="388"> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:Arial, sans-serif;">8MHz</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> </td> </tr> <tr> <td width="113"> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">接收动态范?/span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> </td> <td width="388"> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:Arial, sans-serif;">?0dB</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> </td> </tr> <tr> <td width="149"> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:Arial, sans-serif;">SD3200</span><span style="font-size:9pt;font-family:宋体;">模块</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">(可任意选配?/span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> </td> <td width="501" colspan="2"> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">可变增益放大?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">  </span><span style="font-size:9pt;font-family:宋体;">介质滤波器放大器?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">830MHz/912MHz/957MHz</span><span style="font-size:9pt;font-family:宋体;">)上变频?/span><span style="font-size:9pt;font-family:Arial, sans-serif;"> </span><span style="font-size:9pt;font-family:宋体;">下变频器</span><span style="font-size:9pt;font-family:Arial, sans-serif;"> </span><span style="font-size:9pt;font-family:宋体;">锁相振荡?/span><span style="font-size:9pt;font-family:Arial, sans-serif;"> </span><span style="font-size:9pt;font-family:宋体;">中频滤波器放大器</span><span style="font-size:9pt;font-family:Arial, sans-serif;"> </span><span style="font-size:9pt;font-family:宋体;">介质双工?/span><span style="font-size:9pt;font-family:Arial, sans-serif;"> </span><span style="font-size:9pt;font-family:宋体;">微带型二功分?/span><span style="font-size:9pt;font-family:Arial, sans-serif;"> </span><span style="font-size:9pt;font-family:宋体;">腔体耦合?/span><span style="font-size:9pt;font-family:Arial, sans-serif;"> </span><span style="font-size:9pt;font-family:宋体;">同轴负载</span><span style="font-size:9pt;font-family:Arial, sans-serif;"> </span><span style="font-size:9pt;font-family:宋体;">同轴衰减?/span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> </td> </tr> </tbody> </table> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:Arial, sans-serif;"> </span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <h1> 射频<span>/</span>微波电路模块的主要特?</h1> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:Arial, sans-serif;">1</span><span style="font-size:9pt;font-family:宋体;">、可变增益放大器?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">800 ~ 1000MHz</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">频率范围?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">800 ~ 1000MHz</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">增益?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">?5dB</span><span style="font-size:9pt;font-family:宋体;">(衰减小时的增益?/span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">增益可调范围?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">31dB</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">带内波动?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">≤?dB</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">三阶交调?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">?/span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">50dBc</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">输入驻波比:</span><span style="font-size:9pt;font-family:Arial, sans-serif;">?.5:1</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:Arial, sans-serif;"> </span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:Arial, sans-serif;">2</span><span style="font-size:9pt;font-family:宋体;">、介质滤波放大器?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">909 ~ 915MHz</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">中心频率?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">912MHz</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">带宽?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">6MHz</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">增益?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">?0dB</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">输入、输出驻波比?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">?.5:1</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:Arial, sans-serif;"> </span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:Arial, sans-serif;">3</span><span style="font-size:9pt;font-family:宋体;">、介质滤波放大器?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">954 ~ 960MHz</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">中心频率?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">957MHz</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">带宽?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">6MHz</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">增益?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">?0dB</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">输入、输出驻波比?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">?.5:1</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:Arial, sans-serif;"> </span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:Arial, sans-serif;">4</span><span style="font-size:9pt;font-family:宋体;">、介质滤波放大器?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">825 ~ 835MHz</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">中心频率?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">830MHz</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">带宽?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">10MHz</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">增益?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">?0dB</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">输入、输出驻波比?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">?.5:1</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:Arial, sans-serif;"> </span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:Arial, sans-serif;">5</span><span style="font-size:9pt;font-family:宋体;">、上变频器(</span><span style="font-size:9pt;font-family:Arial, sans-serif;">U/C</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">70?30MHz</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">射频频率</span><span style="font-size:9pt;font-family:Arial, sans-serif;">f<sub>RF</sub></span><span style="font-size:9pt;font-family:宋体;">和电?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">P<sub>RF</sub></span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">70MHz</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">?/span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">10dBm</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">本振频率</span><span style="font-size:9pt;font-family:Arial, sans-serif;">f<sub>L</sub></span><span style="font-size:9pt;font-family:宋体;">和电?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">P<sub>L</sub></span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">760MHz</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">?/span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">7dBm</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">混频器输出频?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">f<sub>0</sub></span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">830MHz</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">变频损耗:</span><span style="font-size:9pt;font-family:Arial, sans-serif;">L?dB</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">隔离度:</span><span style="font-size:9pt;font-family:Arial, sans-serif;">I?0dB</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:Arial, sans-serif;"> </span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:Arial, sans-serif;">6</span><span style="font-size:9pt;font-family:宋体;">、下变频器(</span><span style="font-size:9pt;font-family:Arial, sans-serif;">D/C</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">830?0MHz</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">射频频率</span><span style="font-size:9pt;font-family:Arial, sans-serif;">f<sub>RF</sub></span><span style="font-size:9pt;font-family:宋体;">和电?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">P<sub>RF</sub></span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">830MHz</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">?10dBm</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">本振频率</span><span style="font-size:9pt;font-family:Arial, sans-serif;">f<sub>L</sub></span><span style="font-size:9pt;font-family:宋体;">和电?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">P<sub>L</sub></span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">760MHz</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">?7dBm</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">混频器输出频?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">f<sub>0</sub></span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">70MHz</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">变频损?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">L</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">?dB</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">隔离?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">I</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">?0dB</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:Arial, sans-serif;"> </span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:Arial, sans-serif;">7</span><span style="font-size:9pt;font-family:宋体;">、锁相振荡器?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">760MHz</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">输出频率?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">760MHz</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">输出电平?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">?7dBm</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">谐波?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">?30dB</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">杂散?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">?30dB</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">频率稳定度:</span><span style="font-size:9pt;font-family:Arial, sans-serif;">?×10<sup>-6</sup></span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:Arial, sans-serif;"> </span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:Arial, sans-serif;">8</span><span style="font-size:9pt;font-family:宋体;">、中频滤波放大器?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">70±8 MHz</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">中心频率?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">70 MHz</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">带宽?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">±8 MHz </span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">增益?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">?0 dB</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">输入输出放大线性范围:</span><span style="font-size:9pt;font-family:Arial, sans-serif;">0 ~ 10 mVp-p</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:Arial, sans-serif;"> </span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:Arial, sans-serif;">9</span><span style="font-size:9pt;font-family:宋体;">、介质双工器?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">GSM</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">912/957MHz</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">中心频率?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">Tx?12MHz</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">Rx?57MHz</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">插损?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">?.5dB</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">通带宽度?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">±3.0MHz</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">通带波动?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">?.0dB</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">驻波比:</span><span style="font-size:9pt;font-family:Arial, sans-serif;">?.0:1</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">阻带衰耗:</span><span style="font-size:9pt;font-family:Arial, sans-serif;">?5dB</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">at 954</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">960 MHz</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:Arial, sans-serif;">?5dB</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">at 909</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">915 MHz</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">输入输出阻抗?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">50Ω</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:Arial, sans-serif;"> </span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:Arial, sans-serif;">10</span><span style="font-size:9pt;font-family:宋体;">、微带型二功分器?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">800 ~ 2500MHz</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">频率范围?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">800 ~ 2500MHz</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">分配比:</span><span style="font-size:9pt;font-family:Arial, sans-serif;">3dB</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">插损?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">?.25dB</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">耦合度波动范围:</span><span style="font-size:9pt;font-family:Arial, sans-serif;">10±0.8 dB</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">回波损耗:?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">20dB</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">隔离度:?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">20dB</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">阻抗?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">50Ω</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">连接方式?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">N-F</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:Arial, sans-serif;"> </span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:Arial, sans-serif;">11</span><span style="font-size:9pt;font-family:宋体;">、腔体耦合器(</span><span style="font-size:9pt;font-family:Arial, sans-serif;">10dB</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">800 ~ 2500MHz</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">频率范围?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">800MHz-- 2500MHz</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">耦合度:</span><span style="font-size:9pt;font-family:Arial, sans-serif;">10dB</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">分配损耗:</span><span style="font-size:9pt;font-family:Arial, sans-serif;">0.454 dB</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">耦合度波动范围:</span><span style="font-size:9pt;font-family:Arial, sans-serif;">10±0.8 dB</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">回波损?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">?0 dB </span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">插损</span><span style="font-size:9pt;font-family:Arial, sans-serif;">L?.15dB</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">隔离?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">?0dB</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">阻抗?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">50Ω</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:Arial, sans-serif;"> </span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:Arial, sans-serif;">12</span><span style="font-size:9pt;font-family:宋体;">、微带耦合器(</span><span style="font-size:9pt;font-family:Arial, sans-serif;">10dB</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">800 ~ 2500MHz</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">频率范围?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">800MHz?500MHz</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">耦合度:</span><span style="font-size:9pt;font-family:Arial, sans-serif;">10dB</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">分配损耗:</span><span style="font-size:9pt;font-family:Arial, sans-serif;">0.454 dB</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">耦合度波动范围:</span><span style="font-size:9pt;font-family:Arial, sans-serif;">10±0.8 dB</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">回波损?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">?0 dB </span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">插损</span><span style="font-size:9pt;font-family:Arial, sans-serif;">L?.25dB</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">隔离?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">?0dB</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">阻抗?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">50Ω</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:Arial, sans-serif;"> </span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:Arial, sans-serif;">13</span><span style="font-size:9pt;font-family:宋体;">、同轴负载(</span><span style="font-size:9pt;font-family:Arial, sans-serif;">DC ~ 2500MHz</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">频率范围?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">DC-3GHz</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">端口阻抗?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">50Ω</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">驻波比:</span><span style="font-size:9pt;font-family:Arial, sans-serif;">?.2:1</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:Arial, sans-serif;"> </span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:Arial, sans-serif;">14</span><span style="font-size:9pt;font-family:宋体;">、同轴衰减器?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">DC ~ 2500MHz</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">频率范围</span><span style="font-size:9pt;font-family:Arial, sans-serif;">f0</span><span style="font-size:9pt;font-family:宋体;">?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">DC-- 3000MHz</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">衰减量:</span><span style="font-size:9pt;font-family:Arial, sans-serif;"> 10dB</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">驻波比:</span><span style="font-size:9pt;font-family:Arial, sans-serif;">?.2:1</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <p class="MsoNormal" align="left"> <span style="font-size:9pt;font-family:宋体;">衰减精度</span><span style="font-size:9pt;font-family:Arial, sans-serif;">△A?.5dB</span><span style="font-size:9pt;font-family:Arial, sans-serif;"></span> </p> <span style="font-size:9pt;font-family:宋体;">端口阻抗?/span><span style="font-size:9pt;font-family:Arial, sans-serif;">50Ω</span><br /><span id="nestremark"></span></p> </div> <p> 上一条:<a href="/supply/39.html">SD3100H高频电路测量实训系统</a> 下一?<a 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