39 lines
59 KiB
HTML
39 lines
59 KiB
HTML
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title: defnote.qrich
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updated: 2022-01-08 13:17:42Z
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created: 2022-01-08 13:17:42Z
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---
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN" "http://www.w3.org/TR/REC-html40/strict.dtd">
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<html>
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<head>
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<meta name="qrichtext" content="1" />
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
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<style type="text/css">
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p, li { white-space: pre-wrap; }
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</style>
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</head>
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<body style="font-family:'Tahoma'; font-size:10pt; font-weight:400; font-style:normal;">
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<p style="margin:0px;">常用<span style=" font-size:16pt; font-weight:600; background-color:#ffff00;">10MHz，100MHz</span></p>
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<p style="margin:0px;">100MHz拆机件少，需要定制，相噪好</p>
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<p style="margin:0px;">10MHz通信设备上用的比较多，拆机件便宜，100MHz等效相噪差，通过<a href="nyf://entry?itemid=10&itemtext=HMC1031"><span style=" text-decoration: underline; color:#0000ff;">HMC1031</span></a>+<a href="nyf://entry?itemid=11&itemtext=CVHD-950"><span style=" text-decoration: underline; color:#0000ff;">CVHD-950</span></a>锁相能获得较好的相噪，见<a href="nyf://entry?itemid=10&file=%E9%94%81%E7%9B%B8%E5%90%8E%E7%9A%84%E7%9B%B8%E5%99%AA.png"><span style=" text-decoration: underline; color:#0000ff;">锁相后的相噪.png</span></a> </p>
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<p style="margin:0px;">对于普通PLL（835已推测），<span style=" font-size:16pt; font-weight:600; background-color:#ffff00;">-145dBc/Hz@10kHz</span>的相噪水平即已够用</p>
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<p style="margin:0px;">2021.06</p>
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<p style="margin:0px;">HMC835明确说明如下，转换为100MHz即为-142~-147@10k</p>
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<p style="margin:0px;"><img src="data:image/png;base64,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<p style="-qt-paragraph-type:empty; margin:0px;"><br /></p>
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<p style="margin:0px;"><img src="data:image/png;base64,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<p style="-qt-paragraph-type:empty; margin:0px;"><br /></p>
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<p style="margin:0px;"><span style=" font-size:12pt; font-weight:600;">初步想法是</span></p>
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<p style="margin:0px;">10MHz做参考，可输入输出，</p>
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<p style="margin:0px;"> 同一IO口实现时内部采用功分结构，作为输出是功分直接输出，作为输入时关断内部晶振供电，参考<a href="nyf://entry?itemid=12&file=SynthHD%E8%AE%BE%E8%AE%A1.png"><span style=" text-decoration: underline; color:#0000ff;">SynthHD设计.png</span></a> </p>
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<p style="margin:0px;"> 不同IO口则需要开关配合，输出可加buffer改善波形</p>
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<p style="margin:0px;">通过<a href="nyf://entry?itemid=10&itemtext=HMC1031"><span style=" text-decoration: underline; color:#0000ff;">HMC1031</span></a>+<a href="nyf://entry?itemid=11&itemtext=CVHD-950"><span style=" text-decoration: underline; color:#0000ff;">CVHD-950</span></a>锁相得到100<span style=" text-decoration: line-through;">/102.4MHz</span>，此时100<span style=" text-decoration: line-through;">/102.4</span>相噪特性较好，对外参考的指标特性需求不高，但短处也在于此，<span style=" font-size:16pt; font-weight:600; background-color:#ffff00;">不能</span>通过外参考改善前端的整体相噪水平</p>
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<p style="margin:0px;"><span style=" font-size:16pt; font-weight:600; background-color:#ffff00;"> 102.4MHz</span></p>
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<p style="margin:0px;">以上原理通过微调10MHz参考的方式不能获得102.4MHz的输出（<a href="nyf://entry?bmid=300&bmname=cannot get 102.4 using 10MHz ref with CVHD-950"><span style=" text-decoration: underline; color:#0000ff;">原因</span></a>），如果直接采用HMC832/5锁相的方法产生102.4MHz的信号，</p>
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<p style="margin:0px;">实测相噪特性为<span style=" font-size:16pt; font-weight:600; background-color:#ffff00;">-135dBc/Hz@1kHz，-135dBc/Hz@10kHz</span> （ <a href="nyf://entry?itemid=16&file=FSWP_HMC535_102.4MHz_2018-07-04_15-48-02.JPEG"><span style=" text-decoration: underline; color:#0000ff;">FSWP_HMC535_102.4MHz_2018-07-04_15-48-02.JPEG</span></a> ）</p>
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<p style="margin:0px;">与datasheet值（<a href="nyf://entry?itemid=16&file=HMC835%E4%BD%8E%E9%A2%91%E8%BE%93%E5%87%BA%E6%8C%87%E6%A0%87%E5%8F%82%E8%80%83%E5%80%BC.png"><span style=" text-decoration: underline; color:#0000ff;">HMC835低频输出指标参考值.png</span></a> <a href="nyf://entry?itemid=16&file=HMC832%E4%BD%8E%E9%A2%91%E8%BE%93%E5%87%BA%E6%8C%87%E6%A0%87%E5%8F%82%E8%80%83%E5%80%BC.png"><span style=" text-decoration: underline; color:#0000ff;">HMC832低频输出指标参考值.png</span></a> ）差距较大，可能是工作模式（Int/Frac）和环路参数的优化对象不同所致，<span style=" background-color:#ffff00;">建议采用datasheet采用的环路滤波参数重测</span></p>
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<p style="margin:0px;">4GHz输出的相噪与datasheet的参考值差距不大（<a href="nyf://entry?itemid=16&file=FSWP_hmc835_4GHz_2018-07-03_14-59-14.JPEG"><span style=" text-decoration: underline; color:#0000ff;">FSWP_hmc835_4GHz_2018-07-03_14-59-14.JPEG</span></a> ）</p>
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