{"id":2614,"date":"2026-10-15T15:00:00","date_gmt":"2026-10-15T07:00:00","guid":{"rendered":"https:\/\/www.jingpengpcb.com\/?p=2614"},"modified":"2026-10-08T20:14:45","modified_gmt":"2026-10-08T12:14:45","slug":"substrate-and-delay-line-stability","status":"publish","type":"post","link":"https:\/\/www.jingpengpcb.com\/en\/blog\/substrate-and-delay-line-stability\/","title":{"rendered":"How Does the Substrate Affect the Stability of Delay Lines? Bandwidth, Delay, and Attenuation Characteristics"},"content":{"rendered":"<style>\n.jp-tw{overflow-x:auto;margin:26px 0;-webkit-overflow-scrolling:touch;}\n.jp-tw table{border-collapse:collapse;width:100%;min-width:560px;font-size:15px;line-height:1.65;background:#fff;}\n.jp-tw th,.jp-tw td{border:1px solid #dde3ea;padding:11px 14px;text-align:left;vertical-align:top;}\n.jp-tw thead th{background:#eef2f7;color:#1b2733;font-weight:700;white-space:nowrap;border-bottom:2px solid #c9d3de;}\n.jp-tw tbody tr:nth-child(even){background:#fafbfc;}\n.jp-tw tbody tr:hover{background:#f1f5fa;}\n.jp-tw tbody td:first-child{font-weight:600;color:#1b2733;}\n@media(max-width:767px){.jp-tw table{font-size:14px;min-width:520px;}.jp-tw th,.jp-tw td{padding:9px 11px;}}\n<\/style>\n<h2>1. \u5ef6\u65f6\u7ebf\u5230\u5e95\u662f\u4ec0\u4e48<\/h2>\n<p>\u5ef6\u65f6\u7ebf\uff08Delay Line\uff09\u662f\u4e00\u79cd<strong>\u8ba9\u7535\u4fe1\u53f7\u6309\u9884\u5b9a\u65f6\u95f4\u6ede\u540e\u5230\u8fbe<\/strong>\u7684\u5143\u4ef6\u6216\u7ed3\u6784\u3002\u5b83\u7684\u7528\u9014\u53ef\u4ee5\u5f52\u4e3a\u56db\u7c7b\uff1a<\/p>\n<ul>\n<li><strong>\u65f6\u5e8f\u5bf9\u9f50<\/strong>\uff1a\u8ba9\u591a\u8def\u4fe1\u53f7\u540c\u65f6\u5230\u8fbe\uff08\u5982\u5e76\u884c\u603b\u7ebf\u7684\u8d70\u7ebf\u7b49\u957f\u3001IQ \u4e24\u8def\u57fa\u5e26\u4fe1\u53f7\u7b49\u957f\uff09\u3002<\/li>\n<li><strong>\u76f8\u4f4d\u63a7\u5236<\/strong>\uff1a\u5728\u76f8\u63a7\u9635\u3001\u79fb\u76f8\u7f51\u7edc\u91cc\u901a\u8fc7\u63a7\u5236\u5ef6\u8fdf\u6539\u53d8\u76f8\u4f4d\u3002<\/li>\n<li><strong>\u8109\u51b2\u6574\u5f62\u4e0e\u5c55\u5bbd<\/strong>\uff1a\u628a\u7a84\u8109\u51b2\u5c55\u5bbd\u5230\u53ef\u68c0\u6d4b\u7684\u5bbd\u5ea6\u3002<\/li>\n<li><strong>\u65f6\u95f4\u57fa\u51c6<\/strong>\uff1a\u5728\u65f6\u57df\u53cd\u5c04\u8ba1\uff08TDR\uff09\u3001\u65f6\u95f4\u95f4\u9694\u6d4b\u91cf\u91cc\u4f5c\u4e3a\u5df2\u77e5\u5ef6\u8fdf\u7684\u53c2\u8003\u3002<\/li>\n<\/ul>\n<p>\u5b9e\u73b0\u65b9\u5f0f\u6709\u300c\u79bb\u6563\u5668\u4ef6\u300d\u548c\u300cPCB \u8d70\u7ebf\u300d\u4e24\u6761\u8def\u3002\u79bb\u6563\u5668\u4ef6\uff08\u540c\u8f74\u7535\u7f06\u3001SAW\/BAW \u5668\u4ef6\uff09\u5ef6\u8fdf\u91cf\u5927\u3001\u7cbe\u5ea6\u9ad8\uff0c\u4f46\u6210\u672c\u9ad8\u3001\u5360\u9762\u79ef\uff1bPCB \u8d70\u7ebf\u5ef6\u8fdf\u91cf\u5c0f\uff08\u6bcf 100 mm \u7ea6 0.5\u20130.6 ns\uff09\uff0c\u4f46\u51e0\u4e4e\u96f6\u6210\u672c\u3001\u53ef\u4efb\u610f\u5e03\u7ebf\u3002<strong>\u5728 PCB \u4e0a\uff0c\u7edd\u5927\u90e8\u5206\u300c\u5ef6\u65f6\u7ebf\u300d\u5176\u5b9e\u5c31\u662f\u4e00\u6bb5\u957f\u5ea6\u7ecf\u8fc7\u8ba1\u7b97\u7684\u8d70\u7ebf<\/strong>\u2014\u2014\u86c7\u5f62\u7ebf\uff08Serpentine\uff09\u662f\u6700\u5e38\u89c1\u7684\u5f62\u6001\u3002<\/p>\n<h2>2. \u5ef6\u8fdf\u91cf\u7531\u4ec0\u4e48\u51b3\u5b9a\uff1a\u4e00\u4e2a\u5fc5\u987b\u8bb0\u4f4f\u7684\u516c\u5f0f<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"1280\" height=\"720\" class=\"alignnone size-large wp-image-8849\" src=\"https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/08\/nine-high-speed-pcb-signal-routing-rules.jpg\" alt=\"Nine Rules for High-Speed PCB Signal Tracing\" srcset=\"https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/08\/nine-high-speed-pcb-signal-routing-rules.jpg 1280w, https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/08\/nine-high-speed-pcb-signal-routing-rules-300x169.jpg 300w, https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/08\/nine-high-speed-pcb-signal-routing-rules-1024x576.jpg 1024w, https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/08\/nine-high-speed-pcb-signal-routing-rules-768x432.jpg 768w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<p>\u4fe1\u53f7\u5728 PCB \u8d70\u7ebf\u4e0a\u7684\u4f20\u64ad\u901f\u5ea6\u53ea\u53d6\u51b3\u4e8e\u4ecb\u8d28\u7684\u6709\u6548\u4ecb\u7535\u5e38\u6570\uff1a<\/p>\n<p><strong>v = c \/ \u221aDk<sub>eff<\/sub><\/strong><\/p>\n<p>\u5176\u4e2d c \u662f\u5149\u901f\uff08\u7ea6 3\u00d710<sup>8<\/sup> m\/s\uff09\uff0cDk<sub>eff<\/sub> \u662f\u6709\u6548\u4ecb\u7535\u5e38\u6570\u3002\u7531\u6b64\u63a8\u51fa\u5355\u4f4d\u957f\u5ea6\u5ef6\u8fdf\uff1a<\/p>\n<div class=\"jp-tw\">\n<table>\n<thead>\n<tr>\n<th>Materials<\/th>\n<th>Dk<\/th>\n<th>\u4f20\u64ad\u901f\u5ea6\uff08\u76f8\u5bf9\u5149\u901f\uff09<\/th>\n<th>\u5355\u4f4d\u957f\u5ea6\u5ef6\u8fdf<\/th>\n<th>100 mm \u8d70\u7ebf\u5ef6\u8fdf<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u7a7a\u6c14\uff08\u53c2\u8003\uff09<\/td>\n<td>1.0<\/td>\n<td>100%<\/td>\n<td>3.34 ns\/m<\/td>\n<td>0.334 ns<\/td>\n<\/tr>\n<tr>\n<td>PTFE \u57fa\u6750<\/td>\n<td>2.2<\/td>\n<td>67%<\/td>\n<td>4.95 ns\/m<\/td>\n<td>0.495 ns<\/td>\n<\/tr>\n<tr>\n<td>\u78b3\u6c22\u9676\u74f7<\/td>\n<td>3.0<\/td>\n<td>58%<\/td>\n<td>5.78 ns\/m<\/td>\n<td>0.578 ns<\/td>\n<\/tr>\n<tr>\n<td>Standard FR-4<\/td>\n<td>4.2<\/td>\n<td>49%<\/td>\n<td>6.84 ns\/m<\/td>\n<td>0.684 ns<\/td>\n<\/tr>\n<tr>\n<td>\u9ad8 Dk \u6750\u6599<\/td>\n<td>6.0<\/td>\n<td>41%<\/td>\n<td>8.18 ns\/m<\/td>\n<td>0.818 ns<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>\u8fd9\u5f20\u8868\u76f4\u63a5\u8bf4\u660e\u4e86<strong>\u4e3a\u4ec0\u4e48\u5ef6\u65f6\u8981\u770b\u57fa\u6750<\/strong>\uff1a\u540c\u6837 100 mm \u7684\u8d70\u7ebf\uff0c\u7528 Dk 2.2 \u7684\u6750\u6599\u5ef6\u8fdf 0.495 ns\uff0c\u7528 Dk 4.2 \u7684 FR-4 \u5ef6\u8fdf 0.684 ns\uff0c\u76f8\u5dee 38%\u3002\u5982\u679c\u8bbe\u8ba1\u7684\u65f6\u5e8f\u9884\u7b97\u672c\u6765\u5c31\u53ea\u6709 100 ps\uff0c\u6750\u6599\u9009\u9519\u76f4\u63a5\u8d85\u6807\u3002<\/p>\n<p>\u5728PCB\u7ebf\u8def\u677f\u4e2d\uff0c\u5ef6\u65f6\u7ebf\u662f\u4e00\u79cd\u5728\u6a21\u62df\u7535\u8def\u548c\u6570\u5b57\u7535\u8def\u4e2d\u8c03\u8282\u4fe1\u53f7\u7684\u91cd\u8981\u7ed3\u6784\u5143\u4ef6\u3002\u5b83\u5728\u9ad8\u9891\u9ad8\u901f\u5e94\u7528\u4e2d\u53d1\u6325\u7740\u5173\u952e\u4f5c\u7528\uff0c\u56e0\u6b64\u6211\u4eec\u9700\u8981\u6df1\u5165\u4e86\u89e3\u5b83\u7684\u4e3b\u8981\u7279\u5f81\u4ee5\u53ca\u5728PCB\u8bbe\u8ba1\u4e2d\u7684\u4f5c\u7528\u3002<\/p>\n<h2>3. \u5ef6\u65f6\u7ebf\u7684\u4e3b\u8981\u7279\u5f81<\/h2>\n<p>\u9ad8\u9891\u9ad8\u901f\u5ef6\u65f6\u7ebf\u7684\u6027\u80fd\u53c2\u6570\u5bf9\u4e8e\u7535\u8def\u8bbe\u8ba1\u81f3\u5173\u91cd\u8981\uff0c\u4e0b\u9762\u662f\u4e00\u4e9b\u4e3b\u8981\u7279\u5f81\uff1a<\/p>\n<h3>\u5de5\u4f5c\u5e26\u5bbd<\/h3>\n<p>\u5de5\u4f5c\u5e26\u5bbd\u662f\u6307\u5ef6\u65f6\u7ebf\u80fd\u591f\u4f20\u8f93\u7684\u9891\u7387\u8303\u56f4\u3002\u5728\u9ad8\u9891\u7535\u8def\u4e2d\uff0c\u9700\u8981\u9009\u62e9\u5177\u6709\u8db3\u591f\u5bbd\u5de5\u4f5c\u5e26\u5bbd\u7684\u5ef6\u65f6\u7ebf\uff0c\u4ee5\u786e\u4fdd\u4fe1\u53f7\u7684\u51c6\u786e\u4f20\u8f93\u3002<\/p>\n<h3>\u5ef6\u8fdf\u65f6\u95f4<\/h3>\n<p>\u5ef6\u8fdf\u65f6\u95f4\u8868\u793a\u4fe1\u53f7\u901a\u8fc7\u5ef6\u65f6\u7ebf\u6240\u9700\u7684\u65f6\u95f4\u3002\u5728\u67d0\u4e9b\u5e94\u7528\u4e2d\uff0c\u65f6\u95f4\u7684\u7cbe\u786e\u6027\u81f3\u5173\u91cd\u8981\uff0c\u56e0\u6b64\u9700\u8981\u4ed4\u7ec6\u63a7\u5236\u5ef6\u8fdf\u65f6\u95f4\u3002<\/p>\n<h3>\u63d2\u5165\u635f\u8017<\/h3>\n<p>\u63d2\u5165\u635f\u8017\u662f\u4fe1\u53f7\u901a\u8fc7\u5ef6\u65f6\u7ebf\u65f6\u4e22\u5931\u7684\u80fd\u91cf\u3002\u9ad8\u9891\u9ad8\u901f\u7535\u8def\u4e2d\uff0c\u9700\u8981\u6700\u5c0f\u5316\u63d2\u5165\u635f\u8017\uff0c\u4ee5\u786e\u4fdd\u4fe1\u53f7\u8d28\u91cf\u3002<\/p>\n<h3>\u56de\u6ce2\u635f\u8017<\/h3>\n<p>\u56de\u6ce2\u635f\u8017\u662f\u4fe1\u53f7\u5728\u5ef6\u65f6\u7ebf\u672b\u7aef\u53cd\u5c04\u56de\u6765\u7684\u635f\u8017\u3002\u5b83\u9700\u8981\u901a\u8fc7\u8bbe\u8ba1\u6765\u964d\u4f4e\uff0c\u4ee5\u9632\u6b62\u4fe1\u53f7\u53cd\u5c04\u5f15\u53d1\u95ee\u9898\u3002<\/p>\n<h3>\u9a7b\u6ce2\u6bd4<\/h3>\n<p>\u9a7b\u6ce2\u6bd4\u662f\u63cf\u8ff0\u4fe1\u53f7\u4f20\u8f93\u7ebf\u4e0a\u53cd\u5c04\u7684\u5ea6\u91cf\u3002\u4f4e\u9a7b\u6ce2\u6bd4\u662f\u7406\u60f3\u7684\uff0c\u56e0\u4e3a\u5b83\u8868\u793a\u4fe1\u53f7\u7684\u6709\u6548\u4f20\u8f93\u800c\u4e0d\u53d7\u53cd\u5c04\u5e72\u6270\u3002<\/p>\n<h3>\u4e0a\u5347\u65f6\u95f4<\/h3>\n<p>\u4e0a\u5347\u65f6\u95f4\u8868\u793a\u4fe1\u53f7\u4ece\u4f4e\u7535\u5e73\u5230\u9ad8\u7535\u5e73\u7684\u8f6c\u53d8\u65f6\u95f4\u3002\u5728\u9ad8\u901f\u6570\u5b57\u7535\u8def\u4e2d\uff0c\u9700\u8981\u63a7\u5236\u4e0a\u5347\u65f6\u95f4\uff0c\u4ee5\u786e\u4fdd\u6570\u636e\u7684\u51c6\u786e\u4f20\u8f93\u3002<\/p>\n<h3>\u5ef6\u8fdf\u7a33\u5b9a\u6027<\/h3>\n<p>\u5ef6\u8fdf\u7ebf\u9700\u8981\u5728\u4e0d\u540c\u6e29\u5ea6\u548c\u73af\u5883\u6761\u4ef6\u4e0b\u4fdd\u6301\u7a33\u5b9a\u6027\u3002\u5ef6\u8fdf\u7a33\u5b9a\u6027\u662f\u9ad8\u9891\u9ad8\u901f\u7535\u8def\u4e2d\u7684\u91cd\u8981\u6027\u80fd\u6307\u6807\u3002<\/p>\n<h2>4. \u5ef6\u65f6\u7ebf\u7684\u5b9e\u73b0\u65b9\u5f0f<\/h2>\n<p>\u5ef6\u65f6\u7ebf\u53ef\u4ee5\u901a\u8fc7\u4e0d\u540c\u7684\u7535\u8def\u5143\u4ef6\u6765\u5b9e\u73b0\uff0c\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u540c\u8f74\u7ebf<\/strong>\uff1a\u5e38\u7528\u4e8e\u9ad8\u9891\u5e94\u7528\uff0c\u5177\u6709\u826f\u597d\u7684\u5de5\u4f5c\u5e26\u5bbd\u548c\u4f4e\u63d2\u5165\u635f\u8017\u3002<\/li>\n<li><strong>\u4f53\u58f0\u6ce2\u5143\u4ef6<\/strong>\uff1a\u9002\u7528\u4e8e\u7279\u5b9a\u9891\u7387\u8303\u56f4\u7684\u5e94\u7528\uff0c\u901a\u5e38\u7528\u4e8e\u6ee4\u6ce2\u548c\u5ef6\u65f6\u3002<\/li>\n<li><strong>\u58f0\u8868\u9762\u6ce2\u5143\u4ef6<\/strong>\uff1a\u7528\u4e8e\u9ad8\u901f\u6570\u5b57\u7535\u8def\uff0c\u80fd\u591f\u63d0\u4f9b\u7cbe\u786e\u7684\u5ef6\u8fdf\u65f6\u95f4\u548c\u4f4e\u63d2\u5165\u635f\u8017\u3002<\/li>\n<\/ul>\n<p>PCB\u6750\u6599\u7684\u9009\u62e9\u5bf9\u5ef6\u65f6\u7ebf\u7684\u6027\u80fd\u81f3\u5173\u91cd\u8981\u3002\u5177\u6709\u4e00\u81f4\u7684\u4ecb\u7535\u5e38\u6570\u548c\u539a\u5ea6\u7684PCB\u6750\u6599\u53ef\u4ee5\u63d0\u9ad8\u5ef6\u65f6\u7ebf\u7684\u6027\u80fd\u5747\u4e00\u6027\u548c\u9884\u671f\u6548\u679c\u3002\u4ecb\u7535\u5e38\u6570\u8d8a\u4e00\u81f4\uff0c\u6750\u6599\u539a\u5ea6\u7684\u4e00\u81f4\u6027\u8d8a\u597d\uff0c\u5ef6\u65f6\u7ebf\u7684\u7a33\u5b9a\u6027\u5c31\u8d8a\u9ad8\u3002<\/p>\n<h2>5. \u7535\u78c1\u4fe1\u53f7\u4f20\u64ad<\/h2>\n<p>\u5ef6\u65f6\u7ebf\u5728\u7535\u8def\u4e2d\u7684\u4f5c\u7528\u4e3b\u8981\u662f\u4f5c\u4e3a\u7535\u78c1\u4fe1\u53f7\u7684\u4f20\u8f93\u5a92\u4ecb\u3002\u5f53\u4fe1\u53f7\u5728\u7535\u8def\u4e2d\u4f20\u64ad\u65f6\uff0c\u6750\u6599\u7684\u4ecb\u7535\u5e38\u6570\u4f1a\u5f71\u54cd\u4fe1\u53f7\u7684\u4f20\u64ad\u901f\u5ea6\u3002\u8f83\u9ad8\u7684\u4ecb\u7535\u5e38\u6570\u4f1a\u5bfc\u81f4\u4fe1\u53f7\u4f20\u64ad\u901f\u5ea6\u53d8\u6162\u3002\u56e0\u6b64\uff0c\u5bf9\u4e8ePCB\u4e0a\u7684\u4fe1\u53f7\u7ebf\uff0c\u7535\u78c1\u4fe1\u53f7\u7684\u4f20\u64ad\u901f\u7387\u7b49\u4e8e\u5149\u901f\u9664\u4ee5\u4ecb\u7535\u5e38\u6570\u7684\u5e73\u65b9\u6839\u3002<\/p>\n<p>\u5bf9\u4e8e\u5c04\u9891\u5fae\u5e26\u5ef6\u65f6\u7ebf\uff0c\u7535\u78c1\u573a\u4f1a\u7a7f\u8fc7\u91d1\u5c5e\u5bfc\u4f53\u548c\u4ecb\u7535\u6750\u6599\u7ec4\u5408\u4f53\u3002\u4ecb\u7535\u6750\u6599\u7684\u7279\u6027\u5bf9\u5ef6\u65f6\u7ebf\u7684\u6027\u80fd\u4ea7\u751f\u91cd\u5927\u5f71\u54cd\u3002PCB\u6750\u6599\u7684\u826f\u597d\u9009\u62e9\u9700\u8981\u7efc\u5408\u8003\u8651\u4ecb\u7535\u5e38\u6570\u3001\u5bb9\u5dee\u3001\u635f\u8017\u56e0\u5b50\u4ee5\u53ca\u539a\u5ea6\u63a7\u5236\u3002<\/p>\n<h2>6. \u6750\u6599\u9009\u62e9\u7684\u5173\u952e\u6027<\/h2>\n<p>\u5728\u5ef6\u65f6\u7ebf\u8bbe\u8ba1\u4e2d\uff0c\u9009\u62e9\u5408\u9002\u7684PCB\u6750\u6599\u81f3\u5173\u91cd\u8981\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u89c1\u7684PCB\u6750\u6599\u53ca\u5176\u7279\u70b9\uff1a<\/p>\n<h3>\u7f57\u6770\u65af\u516c\u53f8\u7684RT 5880<\/h3>\n<ul>\n<li>\u57fa\u4e8ePTFE\u4e14\u901a\u8fc7\u73bb\u7483\u5fae\u7ea4\u56fa\u5316<\/li>\n<li>\u4ecb\u7535\u5e38\u6570\uff08Dk\uff09\uff1a2.2<\/li>\n<li>\u5bb9\u5dee\uff1a0.02<\/li>\n<li>\u9002\u7528\u4e8e\u9ad8\u6027\u80fd\u8981\u6c42\u7684\u5e94\u7528\uff0c\u4f46\u4ef7\u683c\u8f83\u9ad8<\/li>\n<\/ul>\n<h3>\u7f57\u6770\u65af\u516c\u53f8\u7684RO3003<\/h3>\n<ul>\n<li>\u57fa\u4e8ePTFE\u4e14\u7ecf\u8fc7\u9676\u74f7\u52a0\u56fa<\/li>\n<li>\u4ecb\u7535\u5e38\u6570\uff08Dk\uff09\uff1a3.00<\/li>\n<li>\u5bb9\u5dee\uff1a0.04<\/li>\n<li>\u6027\u4ef7\u6bd4\u8f83\u9ad8\uff0c\u9002\u7528\u4e8e\u591a\u79cd\u7535\u8def\u9700\u6c42<\/li>\n<\/ul>\n<h3>\u7f57\u6770\u65af\u516c\u53f8\u7684RO4835<\/h3>\n<ul>\n<li>\u57fa\u4e8ePTFE<\/li>\n<li>\u4ecb\u7535\u5e38\u6570\uff08Dk\uff09\uff1a3.48<\/li>\n<li>\u5bb9\u5dee\uff1a0.05<\/li>\n<li>\u9002\u7528\u4e8e\u9700\u8981\u517c\u987e\u6027\u80fd\u548c\u6210\u672c\u7684\u5e94\u7528<\/li>\n<\/ul>\n<h2>7. Conclusion<\/h2>\n<p>\u5728\u9ad8\u9891\u9ad8\u901f\u7535\u8def\u8bbe\u8ba1\u4e2d\uff0c\u5ef6\u65f6\u7ebf\u7684\u9009\u62e9\u548c\u8bbe\u8ba1\u81f3\u5173\u91cd\u8981\u3002\u5408\u9002\u7684PCB\u6750\u6599\u3001\u7cbe\u786e\u7684\u539a\u5ea6\u63a7\u5236\u4ee5\u53ca\u826f\u597d\u7684\u63a5\u53e3\u8bbe\u8ba1\u90fd\u53ef\u4ee5\u786e\u4fdd\u5ef6\u65f6\u7ebf\u7684\u6027\u80fd\u4e00\u81f4\u6027\u548c\u9884\u671f\u6548\u679c\u3002\u7efc\u5408\u8003\u8651\u6750\u6599\u7684\u6027\u80fd\u548c\u6210\u672c\uff0c\u6839\u636e\u7279\u5b9a\u5e94\u7528\u9700\u6c42\uff0c\u9009\u62e9\u6700\u5408\u9002\u7684\u5ef6\u65f6\u7ebf\u6750\u6599\u5c06\u6709\u52a9\u4e8e\u5b9e\u73b0\u7535\u8def\u8bbe\u8ba1\u7684\u6210\u529f\u3002<\/p>\n<p>\u901a\u8fc7\u6df1\u5165\u4e86\u89e3\u5ef6\u65f6\u7ebf\u7684\u7279\u6027\u548c\u76f8\u5173\u56e0\u7d20\uff0c\u8bbe\u8ba1\u4eba\u5458\u53ef\u4ee5\u66f4\u597d\u5730\u5e73\u8861\u6027\u80fd\u548c\u6210\u672c\uff0c\u4ece\u800c\u5728\u9ad8\u9891\u9ad8\u901f\u7535\u8def\u4e2d\u53d6\u5f97\u6210\u529f\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"1280\" height=\"720\" class=\"alignnone size-large wp-image-8697\" src=\"https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/08\/smt-reel-bulk-microstrip-transmission-line.jpg\" alt=\"\u5fae\u5e26\u4f20\u8f93\u7ebf\u7ed3\u6784\" srcset=\"https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/08\/smt-reel-bulk-microstrip-transmission-line.jpg 1280w, https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/08\/smt-reel-bulk-microstrip-transmission-line-300x169.jpg 300w, https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/08\/smt-reel-bulk-microstrip-transmission-line-1024x576.jpg 1024w, https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/08\/smt-reel-bulk-microstrip-transmission-line-768x432.jpg 768w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<h2>8. \u628a\u4e09\u79cd Rogers \u6750\u6599\u653e\u8fdb\u5b8c\u6574\u8c31\u7cfb\u91cc\u770b<\/h2>\n<p>\u539f\u6587\u5217\u51fa\u7684\u4e09\u79cd\u6750\u6599\u53ea\u662f\u9ad8\u9891\u677f\u6750\u8c31\u7cfb\u7684\u4e00\u89d2\u3002\u52a0\u4e0a\u635f\u8017\u56e0\u5b50 Df \u4e0e\u6e29\u5ea6\u7cfb\u6570\u540e\uff0c\u9009\u578b\u624d\u5b8c\u6574\uff1a<\/p>\n<div class=\"jp-tw\">\n<table>\n<thead>\n<tr>\n<th>Materials<\/th>\n<th>Dk (10 GHz)<\/th>\n<th>Dk \u5bb9\u5dee<\/th>\n<th>Df (10 GHz)<\/th>\n<th>\u6e29\u5ea6\u7cfb\u6570 (ppm\/\u2103)<\/th>\n<th>\u5b9a\u4f4d<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>RT\/duroid 5880<\/td>\n<td>2.20<\/td>\n<td>\u00b10.02<\/td>\n<td>0.0009<\/td>\n<td>\u2212125<\/td>\n<td>\u6781\u4f4e\u635f\u8017\uff0c\u6beb\u7c73\u6ce2\u3001\u76f8\u63a7\u9635<\/td>\n<\/tr>\n<tr>\n<td>RO3003<\/td>\n<td>3.00<\/td>\n<td>\u00b10.04<\/td>\n<td>0.0010<\/td>\n<td>\u221213<\/td>\n<td>\u6e29\u5ea6\u7a33\u5b9a\u6027\u6781\u4f73\uff0c\u6237\u5916\u57fa\u7ad9<\/td>\n<\/tr>\n<tr>\n<td>RO4835<\/td>\n<td>3.48<\/td>\n<td>\u00b10.05<\/td>\n<td>0.0037<\/td>\n<td>+50<\/td>\n<td>\u6027\u4ef7\u6bd4\u8def\u7ebf\uff0cSub-6G<\/td>\n<\/tr>\n<tr>\n<td>RO4350B<\/td>\n<td>3.48<\/td>\n<td>\u00b10.05<\/td>\n<td>0.0037<\/td>\n<td>+50<\/td>\n<td>\u53ef\u7528 FR-4 \u5de5\u827a\u52a0\u5de5\uff0c\u91cf\u4ea7\u53cb\u597d<\/td>\n<\/tr>\n<tr>\n<td>Standard FR-4<\/td>\n<td>4.2\u20134.6<\/td>\n<td>\u00b10.3<\/td>\n<td>0.020<\/td>\n<td>+200 \u4ee5\u4e0a<\/td>\n<td>\u6210\u672c\u4f18\u5148\uff0c2 GHz \u4ee5\u4e0b<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>\u4e24\u4e2a\u5bb9\u6613\u88ab\u5ffd\u7565\u7684\u5217\uff1a<strong>Dk \u5bb9\u5dee<\/strong>\u2014\u2014FR-4 \u7684 \u00b10.3 \u610f\u5473\u7740\u5ef6\u8fdf\u91cf\u6709 \u00b13.5% \u7684\u4e0d\u786e\u5b9a\u6027\uff0c\u800c RT 5880 \u7684 \u00b10.02 \u53ea\u6709 \u00b10.5%\uff1b<strong>\u6e29\u5ea6\u7cfb\u6570<\/strong>\u2014\u2014RO3003 \u7684 \u221213 ppm\/\u2103 \u5728 \u221240~85 \u2103 \u8303\u56f4\u5185\u5ef6\u8fdf\u6f02\u79fb\u4e0d\u5230 0.2%\uff0c\u8fd9\u662f\u5b83\u6210\u4e3a\u6237\u5916\u57fa\u7ad9\u9996\u9009\u7684\u539f\u56e0\u3002\u5177\u4f53\u6750\u6599\u7684\u53c2\u6570\u89c1<a href=\"\/en\/capabilities\/pcb-materials\/rogers\/\">Rogers Sheets<\/a>\uff0c\u9009\u578b\u65b9\u6cd5\u89c1<a href=\"\/en\/blog\/high-frequency-microwave-board\/\">High-Frequency Microwave Board Selection Guide<\/a>\u3002<\/p>\n<h2>9. \u57fa\u6750\u5f71\u54cd\u5ef6\u65f6\u7ebf\u7a33\u5b9a\u6027\u7684\u56db\u4e2a\u673a\u7406<\/h2>\n<p>\u300c\u7a33\u5b9a\u6027\u300d\u662f\u4e00\u4e2a\u7b3c\u7edf\u7684\u8bf4\u6cd5\uff0c\u62c6\u5f00\u662f\u56db\u6761\u72ec\u7acb\u7684\u8def\u5f84\uff0c\u6bcf\u6761\u7684\u5bf9\u7b56\u90fd\u4e0d\u540c\uff1a<\/p>\n<ul>\n<li><strong>Dk \u6279\u6b21\u6f02\u79fb<\/strong>\uff1a\u4e0d\u540c\u6279\u6b21\u3001\u4e0d\u540c\u4f9b\u5e94\u5546\u7684 Dk \u5b58\u5728\u5dee\u5f02\uff0c\u76f4\u63a5\u6539\u53d8\u5ef6\u8fdf\u91cf\u3002\u5bf9\u7b56\u662f\u9009\u7528 Dk \u5bb9\u5dee\u5c0f\u7684\u6750\u6599\uff0c\u5e76\u5728\u8bbe\u8ba1\u9636\u6bb5\u6309\u6700\u574f\u60c5\u51b5\u505a\u65f6\u5e8f\u9884\u7b97\u3002<\/li>\n<li><strong>Dk \u968f\u6e29\u5ea6\u53d8\u5316<\/strong>\uff1a\u6e29\u5ea6\u6539\u53d8\u6750\u6599\u7684\u6781\u5316\u54cd\u5e94\uff0cDk \u968f\u4e4b\u53d8\u5316\uff0c\u5ef6\u8fdf\u91cf\u8ddf\u7740\u6f02\u79fb\u3002\u5bf9\u7b56\u662f\u9009\u4f4e\u6e29\u5ea6\u7cfb\u6570\u6750\u6599\uff0c\u6216\u505a\u6e29\u5ea6\u8865\u507f\u3002<\/li>\n<li><strong>Dk \u968f\u9891\u7387\u53d8\u5316\uff08\u8272\u6563\uff09<\/strong>\uff1a\u540c\u4e00\u79cd\u6750\u6599\u5728 1 GHz \u4e0e 10 GHz \u4e0b\u7684 Dk \u5e76\u4e0d\u76f8\u540c\uff0c\u5bbd\u9891\u4fe1\u53f7\u7684\u4e0d\u540c\u5206\u91cf\u5ef6\u8fdf\u4e0d\u540c\uff0c\u9020\u6210\u4fe1\u53f7\u5931\u771f\u3002\u5bf9\u7b56\u662f\u9009\u7528 Dk \u9891\u7387\u66f2\u7ebf\u5e73\u5766\u7684\u6750\u6599\u3002<\/li>\n<li><strong>\u5438\u6e7f<\/strong>\uff1a\u6c34\u7684 Dk \u7ea6 80\uff0c\u6750\u6599\u5438\u6e7f\u54ea\u6015\u53ea\u6709 0.1%\uff0cDk \u4e5f\u4f1a\u88ab\u663e\u8457\u62c9\u9ad8\u3002PTFE \u7c7b\u6750\u6599\u5438\u6e7f\u7387\u6781\u4f4e\uff08\uff1c0.02%\uff09\uff0cFR-4 \u7ea6 0.1\u20130.2%\uff0c\u8fd9\u662f PTFE \u5728\u9ad8\u6e7f\u73af\u5883\u4e0b\u7a33\u5b9a\u6027\u66f4\u597d\u7684\u539f\u56e0\u4e4b\u4e00\u3002<\/li>\n<\/ul>\n<p>\u6b64\u5916\u8fd8\u6709<strong>\u4ecb\u8d28\u539a\u5ea6\u516c\u5dee<\/strong>\uff1a\u5ef6\u8fdf\u91cf\u53ea\u4e0e Dk \u6709\u5173\uff0c\u4f46\u963b\u6297\u4e0e\u4ecb\u8d28\u539a\u5ea6\u6709\u5173\uff1b\u539a\u5ea6\u6ce2\u52a8\u4f1a\u9020\u6210\u963b\u6297\u5931\u914d\uff0c\u8fdb\u800c\u5f15\u5165\u53cd\u5c04\u4e0e\u632f\u94c3\uff0c\u95f4\u63a5\u5f71\u54cd\u65f6\u5e8f\u5224\u5b9a\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"1280\" height=\"720\" class=\"alignnone size-large wp-image-8689\" src=\"https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/08\/pcb-wiring-rules-for-single-ended-and-differential-signals.jpg\" alt=\"PCB Routing Rules for Single-Ended and Differential Signals\" srcset=\"https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/08\/pcb-wiring-rules-for-single-ended-and-differential-signals.jpg 1280w, https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/08\/pcb-wiring-rules-for-single-ended-and-differential-signals-300x169.jpg 300w, https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/08\/pcb-wiring-rules-for-single-ended-and-differential-signals-1024x576.jpg 1024w, https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/08\/pcb-wiring-rules-for-single-ended-and-differential-signals-768x432.jpg 768w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<h2>10. PCB \u8d70\u7ebf\u505a\u5ef6\u65f6\u7ebf\u7684\u4e03\u4e2a\u8bbe\u8ba1\u8981\u70b9<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"562\" class=\"alignnone size-large wp-image-8700\" src=\"https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/08\/performance-of-three-types-of-rigid-copper-clad-laminates.jpg\" alt=\"\u4e09\u7c7b\u521a\u6027\u8986\u94dc\u677f\u6027\u80fd\u6bd4\u8f83\" srcset=\"https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/08\/performance-of-three-types-of-rigid-copper-clad-laminates.jpg 1000w, https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/08\/performance-of-three-types-of-rigid-copper-clad-laminates-300x169.jpg 300w, https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/08\/performance-of-three-types-of-rigid-copper-clad-laminates-768x432.jpg 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/p>\n<p>\u7528\u8d70\u7ebf\u505a\u5ef6\u65f6\u7ebf\u65f6\uff0c\u86c7\u5f62\u7ebf\u662f\u6700\u5e38\u7528\u7684\u5f62\u6001\uff0c\u4f46\u6709\u4e03\u4e2a\u5751\uff1a<\/p>\n<ul>\n<li><strong>\u86c7\u5f62\u7ebf\u95f4\u8ddd<\/strong>\uff1a\u5e73\u884c\u6bb5\u4e4b\u95f4\u7684\u95f4\u8ddd\u81f3\u5c11 3 \u500d\u7ebf\u5bbd\uff083W \u89c4\u5219\uff09\uff0c\u5426\u5219\u76f8\u90bb\u6bb5\u4e92\u76f8\u8026\u5408\uff0c\u4fe1\u53f7\u4f1a\u300c\u8d70\u8fd1\u8def\u300d\uff0c\u5b9e\u9645\u5ef6\u8fdf\u5c0f\u4e8e\u8bbe\u8ba1\u503c\u3002<\/li>\n<li><strong>\u907f\u514d\u8fc7\u5bc6<\/strong>\uff1a\u86c7\u5f62\u7ebf\u8d8a\u5bc6\uff0c\u8026\u5408\u8d8a\u5f3a\uff0c\u5ef6\u8fdf\u91cf\u4e0e\u4eff\u771f\u503c\u7684\u504f\u5dee\u8d8a\u5927\u3002\u5fc5\u8981\u65f6\u6539\u7528\u95f4\u65ad\u5f0f\u6216\u5706\u5f27\u6298\u8fd4\u3002<\/li>\n<li><strong>\u5706\u5f27\u4f18\u4e8e\u76f4\u89d2<\/strong>\uff1a\u76f4\u89d2\u6298\u8fd4\u4f1a\u9020\u6210\u963b\u6297\u7a81\u53d8\u4e0e\u53cd\u5c04\uff0c\u5706\u5f27\u6216 45\u00b0 \u6298\u8fd4\u66f4\u5e73\u6ed1\u3002<\/li>\n<li><strong>\u53c2\u8003\u5e73\u9762\u5b8c\u6574<\/strong>\uff1a\u86c7\u5f62\u7ebf\u4e0b\u65b9\u7684\u5730\u5e73\u9762\u4e0d\u80fd\u5f00\u69fd\uff0c\u5426\u5219\u56de\u6d41\u8def\u5f84\u88ab\u5207\u65ad\uff0c\u5ef6\u8fdf\u4e0e\u635f\u8017\u90fd\u4f1a\u5f02\u5e38\u3002<\/li>\n<li><strong>\u5dee\u5206\u5bf9\u7b49\u957f<\/strong>\uff1a\u5dee\u5206\u5bf9\u5185\u7684\u4e24\u6839\u7ebf\u8981\u7b49\u957f\uff0c\u504f\u5dee\u4e00\u822c\u63a7\u5236\u5728 5 mil \u4ee5\u5185\uff0c\u5426\u5219\u5171\u6a21\u6291\u5236\u80fd\u529b\u4e0b\u964d\u3002<\/li>\n<li><strong>\u957f\u5ea6\u5339\u914d\u4f18\u5148\u7ea7<\/strong>\uff1a\u5148\u505a\u7ec4\u5185\u5339\u914d\uff08\u5dee\u5206\u5bf9\u5185\uff09\uff0c\u518d\u505a\u7ec4\u95f4\u5339\u914d\uff08\u603b\u7ebf\u5185\u5404\u7ec4\uff09\uff0c\u6700\u540e\u505a\u8de8\u7ec4\u5339\u914d\u3002<\/li>\n<li><strong>\u4eff\u771f\u9a8c\u8bc1<\/strong>\uff1a\u86c7\u5f62\u7ebf\u7684\u5b9e\u9645\u5ef6\u8fdf\u5fc5\u987b\u7528\u4e09\u7ef4\u7535\u78c1\u4eff\u771f\u6216\u65f6\u57df\u4eff\u771f\u786e\u8ba4\uff0c\u4e0d\u80fd\u53ea\u6309\u957f\u5ea6\u00d7\u5355\u4f4d\u5ef6\u8fdf\u4f30\u7b97\u3002<\/li>\n<\/ul>\n<p>\u9ad8\u901f\u8d70\u7ebf\u7684\u901a\u7528\u89c4\u5219\u89c1<a href=\"\/en\/blog\/nine-high-speed-pcb-signal-routing-rules\/\">Nine Rules for High-Speed PCB Signal Tracing<\/a>\uff0c\u4fe1\u53f7\u5b8c\u6574\u6027\u95ee\u9898\u7684\u7cfb\u7edf\u5206\u6790\u89c1<a href=\"\/en\/blog\/pcb-design-signal-integrity\/\">Signal Integrity Issues in PCB Design<\/a>\u3002<\/p>\n<p>\u4e03\u9879\u7279\u5f81\u7684\u5de5\u7a0b\u53d6\u503c\u53c2\u8003\uff0c\u4fbf\u4e8e\u5728\u89c4\u683c\u4e66\u4e0a\u5b9a\u6307\u6807\uff1a<\/p>\n<div class=\"jp-tw\">\n<table>\n<thead>\n<tr>\n<th>\u7279\u5f81<\/th>\n<th>Definition<\/th>\n<th>\u826f\u597d\u6c34\u5e73<\/th>\n<th>\u4e0d\u5408\u683c\u8868\u73b0<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u5de5\u4f5c\u5e26\u5bbd<\/td>\n<td>\u53ef\u4f20\u8f93\u7684\u9891\u7387\u8303\u56f4<\/td>\n<td>\u8986\u76d6\u4fe1\u53f7\u6700\u9ad8\u9891\u7387\u7684 3 \u500d<\/td>\n<td>\u9ad8\u9891\u5206\u91cf\u88ab\u8870\u51cf\uff0c\u8fb9\u6cbf\u53d8\u7f13<\/td>\n<\/tr>\n<tr>\n<td>\u5ef6\u8fdf\u65f6\u95f4<\/td>\n<td>\u4fe1\u53f7\u901a\u8fc7\u6240\u9700\u65f6\u95f4<\/td>\n<td>\u504f\u5dee \u2264\u00b15%<\/td>\n<td>\u65f6\u5e8f\u9884\u7b97\u8d85\u6807<\/td>\n<\/tr>\n<tr>\n<td>\u63d2\u5165\u635f\u8017<\/td>\n<td>\u901a\u8fc7\u65f6\u7684\u80fd\u91cf\u635f\u5931<\/td>\n<td>\u22641 dB\uff08\u89c6\u957f\u5ea6\u800c\u5b9a\uff09<\/td>\n<td>\u5e45\u5ea6\u4e0d\u8db3\uff0c\u63a5\u6536\u7075\u654f\u5ea6\u4e0b\u964d<\/td>\n<\/tr>\n<tr>\n<td>\u56de\u6ce2\u635f\u8017<\/td>\n<td>\u672b\u7aef\u53cd\u5c04\u635f\u8017<\/td>\n<td>\u226520 dB<\/td>\n<td>\u53cd\u5c04\u9020\u6210\u632f\u94c3\u4e0e\u8fc7\u51b2<\/td>\n<\/tr>\n<tr>\n<td>\u9a7b\u6ce2\u6bd4 VSWR<\/td>\n<td>\u53cd\u5c04\u7a0b\u5ea6\u7684\u5ea6\u91cf<\/td>\n<td>\u22641.2:1<\/td>\n<td>&gt;1.5:1 \u65f6\u80fd\u91cf\u4f20\u8f93\u6548\u7387\u660e\u663e\u4e0b\u964d<\/td>\n<\/tr>\n<tr>\n<td>\u4e0a\u5347\u65f6\u95f4<\/td>\n<td>\u7535\u5e73\u8f6c\u6362\u65f6\u95f4<\/td>\n<td>\u52a3\u5316 \u226410%<\/td>\n<td>\u773c\u56fe\u95ed\u5408\uff0c\u8bef\u7801\u7387\u4e0a\u5347<\/td>\n<\/tr>\n<tr>\n<td>\u5ef6\u8fdf\u7a33\u5b9a\u6027<\/td>\n<td>\u6e29\u6e7f\u5ea6\u4e0b\u7684\u6f02\u79fb<\/td>\n<td>\u2264\u00b11%\uff08\u5168\u6e29\u533a\uff09<\/td>\n<td>\u9ad8\u4f4e\u6e29\u6d4b\u8bd5\u65f6\u5e8f\u5931\u6548<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h2>11. \u5236\u9020\u4e0e\u68c0\u9a8c\uff1a\u628a\u8bbe\u8ba1\u503c\u505a\u51fa\u6765<\/h2>\n<p>\u5ef6\u65f6\u7ebf\u7684\u7cbe\u5ea6\u6700\u7ec8\u53d6\u51b3\u4e8e\u5236\u9020\uff0c\u4e0b\u5355\u524d\u8981\u660e\u786e\u7684\u56db\u9879\uff1a<\/p>\n<ul>\n<li><strong>\u6750\u6599\u724c\u53f7\u4e0e\u6279\u6b21<\/strong>\uff1a\u5199\u6e05\u5177\u4f53\u724c\u53f7\uff08\u5982 RO3003\uff09\u800c\u975e\u7b3c\u7edf\u7684\u300c\u9ad8\u9891\u6750\u6599\u300d\uff0c\u5e76\u8981\u6c42\u540c\u6279\u751f\u4ea7\u3002<\/li>\n<li><strong>\u4ecb\u8d28\u539a\u5ea6\u516c\u5dee<\/strong>\uff1a\u6309 \u00b15% \u6216\u66f4\u4e25\u63d0\u51fa\u8981\u6c42\uff0c\u5e38\u89c4\u677f\u7684 \u00b110% \u4e0d\u591f\u3002<\/li>\n<li><strong>Line Width Tolerance<\/strong>\uff1a\u963b\u6297\u4e0e\u5ef6\u8fdf\u5bf9\u7ebf\u5bbd\u654f\u611f\uff0c\u4e00\u822c\u8981\u6c42 \u00b110%\uff0c\u9ad8\u9891\u677f\u8981\u6c42 \u00b15%\u3002<\/li>\n<li><strong>\u68c0\u6d4b\u65b9\u6cd5<\/strong>\uff1a\u7528 TDR\uff08\u65f6\u57df\u53cd\u5c04\u8ba1\uff09\u5b9e\u6d4b\u5ef6\u8fdf\u4e0e\u963b\u6297\uff0c\u6216\u505a\u6d4b\u8bd5 coupon \u4e0e\u677f\u4e00\u8d77\u51fa\u8d27\u3002<\/li>\n<\/ul>\n<p>\u9a8c\u6536\u65f6\u5bf9\u6bd4\u5b9e\u6d4b\u503c\u4e0e\u4eff\u771f\u503c\uff0c\u504f\u5dee\u8d85\u8fc7 5% \u5c31\u8981\u56de\u5934\u67e5\u6750\u6599\u6279\u6b21\u4e0e\u538b\u5408\u53c2\u6570\u3002\u5b8c\u6574\u7684\u5de5\u827a\u80fd\u529b\u6e05\u5355\u89c1<a href=\"\/en\/capabilities\/\">PCB Manufacturing Capabilities<\/a>\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"1238\" height=\"250\" class=\"alignnone size-large wp-image-544\" src=\"https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2022\/12\/10-signal-integrity-issues-in-high-speed-pcb-design.jpg\" alt=\"10 Signal Integrity Issues in High-Speed PCB Design\" srcset=\"https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2022\/12\/10-signal-integrity-issues-in-high-speed-pcb-design.jpg 1238w, https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2022\/12\/10-signal-integrity-issues-in-high-speed-pcb-design-300x61.jpg 300w, https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2022\/12\/10-signal-integrity-issues-in-high-speed-pcb-design-1024x207.jpg 1024w, https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2022\/12\/10-signal-integrity-issues-in-high-speed-pcb-design-768x155.jpg 768w\" sizes=\"auto, (max-width: 1238px) 100vw, 1238px\" \/><\/p>\n<h2>Frequently Asked Questions<\/h2>\n<p><strong>5 Frequently Asked Questions (FAQs)<\/strong><\/p>\n<h3>1. \u4ec0\u4e48\u662fPCB\u7ebf\u8def\u677f\u4e0a\u7684\u5ef6\u65f6\u7ebf\uff1f<\/h3>\n<p>\u5ef6\u65f6\u7ebf\u662f\u4e00\u79cd\u7528\u4e8e\u8c03\u8282\u4fe1\u53f7\u7684\u7ed3\u6784\u5143\u4ef6\uff0c\u5e38\u7528\u4e8e\u9ad8\u9891\u9ad8\u901f\u7535\u8def\u4e2d\u3002<\/p>\n<h3>2. \u5ef6\u65f6\u7ebf\u7684\u4e3b\u8981\u7279\u5f81\u6709\u54ea\u4e9b\uff1f<\/h3>\n<p>\u4e3b\u8981\u7279\u5f81\u5305\u62ec\u5de5\u4f5c\u5e26\u5bbd\u3001\u5ef6\u8fdf\u65f6\u95f4\u3001\u63d2\u5165\u635f\u8017\u3001\u56de\u6ce2\u635f\u8017\u3001\u9a7b\u6ce2\u6bd4\u3001\u4e0a\u5347\u65f6\u95f4\u548c\u5ef6\u8fdf\u7a33\u5b9a\u6027\u3002<\/p>\n<h3>3. PCB\u6750\u6599\u5bf9\u5ef6\u65f6\u7ebf\u6709\u4f55\u5f71\u54cd\uff1f<\/h3>\n<p>PCB\u6750\u6599\u7684\u4ecb\u7535\u5e38\u6570\u548c\u6027\u80fd\u4f1a\u5f71\u54cd\u5ef6\u65f6\u7ebf\u7684\u6027\u80fd\u4e00\u81f4\u6027\u548c\u9884\u671f\u6548\u679c\u3002<\/p>\n<h3>4. \u5982\u4f55\u9009\u62e9\u5408\u9002\u7684\u5ef6\u65f6\u7ebf\u6750\u6599\uff1f<\/h3>\n<p>\u9009\u62e9\u5ef6\u65f6\u7ebf\u6750\u6599\u65f6\u9700\u8981\u8003\u8651\u6027\u80fd\u3001\u6210\u672c\u548c\u5e94\u7528\u9700\u6c42\uff0c\u4f8b\u5982\uff0c\u7f57\u6770\u65af\u516c\u53f8\u7684\u4e0d\u540c\u6750\u6599\u53ef\u4f9b\u9009\u62e9\u3002<\/p>\n<h3>5. \u4e3a\u4ec0\u4e48\u5ef6\u65f6\u7ebf\u7684\u4e00\u81f4\u6027\u5f88\u91cd\u8981\uff1f<\/h3>\n<p>\u5ef6\u65f6\u7ebf\u7684\u4e00\u81f4\u6027\u786e\u4fdd\u4fe1\u53f7\u5728\u4e0d\u540c\u60c5\u51b5\u4e0b\u7684\u7a33\u5b9a\u4f20\u8f93\uff0c\u5bf9\u4e8e\u9ad8\u9891\u9ad8\u901f\u7535\u8def\u81f3\u5173\u91cd\u8981\u3002<\/p>\n<h3>6. \u86c7\u5f62\u8d70\u7ebf\u7684\u5b9e\u9645\u5ef6\u8fdf\u4e3a\u4ec0\u4e48\u603b\u6bd4\u8ba1\u7b97\u503c\u5c0f\uff1f<\/h3>\n<p>\u56e0\u4e3a\u76f8\u90bb\u5e73\u884c\u6bb5\u4e4b\u95f4\u5b58\u5728\u8026\u5408\uff0c\u4fe1\u53f7\u7684\u4e00\u90e8\u5206\u80fd\u91cf\u901a\u8fc7\u8026\u5408\u300c\u6284\u8fd1\u8def\u300d\u76f4\u63a5\u5230\u8fbe\uff0c\u7b49\u6548\u8def\u5f84\u53d8\u77ed\u3002\u95f4\u8ddd\u8d8a\u5c0f\u3001\u5e73\u884c\u6bb5\u8d8a\u957f\uff0c\u8fd9\u4e2a\u6548\u5e94\u8d8a\u660e\u663e\u3002\u628a\u95f4\u8ddd\u52a0\u5927\u5230 3 \u500d\u7ebf\u5bbd\u4ee5\u4e0a\uff0c\u6216\u5728\u4eff\u771f\u65f6\u628a\u8026\u5408\u7eb3\u5165\u6a21\u578b\uff0c\u624d\u80fd\u7b97\u51c6\u3002<\/p>\n<h3>7. \u5dee\u5206\u5bf9\u7684\u7b49\u957f\u516c\u5dee\u4e00\u822c\u5b9a\u591a\u5c11\uff1f<\/h3>\n<p>\u53d6\u51b3\u4e8e\u4fe1\u53f7\u901f\u7387\u30021 Gbps \u4ee5\u4e0b\u4e00\u822c 50 mil \u53ef\u63a5\u53d7\uff1b5\u201310 Gbps \u8981\u6c42 5\u201310 mil\uff1b28 Gbps \u4ee5\u4e0a\u7684\u9ad8\u901f\u4e32\u884c\u94fe\u8def\u8981\u6c42 1\u20132 mil\u3002\u6ce8\u610f\u8fd9\u91cc\u7684\u300c\u7b49\u957f\u300d\u6307\u5dee\u5206\u5bf9\u5185\u4e24\u6839\u7ebf\u7684\u957f\u5ea6\u5dee\uff0c\u4e0d\u662f\u4e0e\u53c2\u8003\u7ebf\u7684\u5dee\u503c\u3002<\/p>\n<h3>8. \u6e29\u5ea6\u5bf9 PCB \u8d70\u7ebf\u5ef6\u8fdf\u7684\u5f71\u54cd\u6709\u591a\u5927\uff1f<\/h3>\n<p>\u6309\u6e29\u5ea6\u7cfb\u6570\u91cf\u5316\uff1a\u5e38\u89c4 FR-4 \u7684 Dk \u6e29\u5ea6\u7cfb\u6570\u5728 +200 ppm\/\u2103 \u91cf\u7ea7\uff0c\u6298\u7b97\u6210\u5ef6\u8fdf\u7ea6 +100 ppm\/\u2103\uff08\u56e0\u4e3a\u5ef6\u8fdf \u221d \u221aDk\uff09\u3002100 mm \u8d70\u7ebf\u5728 0.684 ns \u57fa\u7840\u4e0a\uff0c\u6e29\u5ea6\u53d8\u5316 50 \u2103 \u4f1a\u5e26\u6765\u7ea6 3.4 ps \u7684\u6f02\u79fb\u3002\u5bf9\u591a\u6570\u6570\u5b57\u7535\u8def\u53ef\u5ffd\u7565\uff0c\u4f46\u5bf9\u76f8\u63a7\u9635\u4e0e\u7cbe\u5bc6\u65f6\u57fa\u5fc5\u987b\u8ba1\u5165\u3002<\/p>\n<h3>9. \u7528 FR-4 \u505a\u5ef6\u65f6\u7ebf\u5c31\u4e00\u5b9a\u4e0d\u884c\u5417\uff1f<\/h3>\n<p>\u4e0d\u662f\u3002FR-4 \u7684\u95ee\u9898\u662f Dk \u5bb9\u5dee\u5927\uff08\u00b10.3\uff09\u3001\u6e29\u5ea6\u7cfb\u6570\u5927\u3001\u635f\u8017\u9ad8\u3002\u5982\u679c\u5e94\u7528\u573a\u666f\u662f\u4f4e\u9891\uff08\uff1c1 GHz\uff09\u3001\u5ef6\u8fdf\u7cbe\u5ea6\u8981\u6c42\u5bbd\u677e\uff08\u00b110% \u53ef\u63a5\u53d7\uff09\u3001\u5de5\u4f5c\u73af\u5883\u6e29\u5ea6\u7a33\u5b9a\uff0cFR-4 \u5b8c\u5168\u591f\u7528\u3002\u771f\u6b63\u4e0d\u80fd\u7528 FR-4 \u7684\u662f\u6beb\u7c73\u6ce2\u3001\u7cbe\u5bc6\u76f8\u63a7\u9635\u3001\u957f\u8ddd\u79bb\u4f4e\u635f\u8017\u4f20\u8f93\u8fd9\u51e0\u7c7b\u3002<\/p>\n<h3>10. \u5ef6\u65f6\u7ebf\u8bbe\u8ba1\u5b8c\u6210\u540e\u600e\u4e48\u9a8c\u8bc1\uff1f<\/h3>\n<p>\u4e09\u6b65\uff1a\u5148\u7528\u4e09\u7ef4\u7535\u78c1\u4eff\u771f\u63d0\u53d6 S \u53c2\u6570\uff0c\u786e\u8ba4\u5ef6\u8fdf\u4e0e\u63d2\u635f\uff1b\u518d\u505a\u65f6\u57df\u4eff\u771f\uff0c\u770b\u773c\u56fe\u4e0e\u4e0a\u5347\u65f6\u95f4\u662f\u5426\u8fbe\u6807\uff1b\u6700\u540e\u5728\u5b9e\u7269\u4e0a\u7528 TDR \u6216\u77e2\u91cf\u7f51\u7edc\u5206\u6790\u4eea\u5b9e\u6d4b\uff0c\u5bf9\u6bd4\u4eff\u771f\u3002\u504f\u5dee\u8d85\u8fc7 5% \u65f6\uff0c\u4f18\u5148\u67e5\u6750\u6599\u6279\u6b21 Dk \u4e0e\u538b\u5408\u540e\u4ecb\u8d28\u539a\u5ea6\u8fd9\u4e24\u9879\u3002<\/p>\n<p><strong>Additional Information<\/strong>\uff1a<a href=\"\/en\/blog\/pcb-multilayer-board-tg\/\">Stability and Reliability of Multilayer PCBs<\/a> \u00b7 <a href=\"\/en\/blog\/latest-131-pcb-layout-specifications\/\">131\u6761PCB Layout\u8bbe\u8ba1\u5fc5\u5907\u6307\u5357<\/a> \u00b7 <a href=\"\/en\/blog\/impedance-and-loss-of-pcb\/\">The Effects of PCB Impedance and Loss on Signals<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>1. \u5ef6\u65f6\u7ebf\u5230\u5e95\u662f\u4ec0\u4e48 \u5ef6\u65f6\u7ebf\uff08Delay Line\uff09\u662f\u4e00\u79cd\u8ba9\u7535\u4fe1\u53f7\u6309\u9884\u5b9a\u65f6\u95f4\u6ede\u540e\u5230\u8fbe\u7684\u5143\u4ef6\u6216\u7ed3\u6784\u3002\u5b83\u7684\u7528\u9014\u53ef [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"slim_seo":{"title":"How Does the Substrate Affect the Stability of Delay Lines? Bandwidth, Delay, and Attenuation Characteristics","description":"\u57fa\u6750\u4e3a\u4ec0\u4e48\u51b3\u5b9a\u5ef6\u65f6\u7ebf\u7a33\u5b9a\u6027\uff1f\u8bb2\u6e05\u5de5\u4f5c\u5e26\u5bbd\u3001\u5ef6\u8fdf\u65f6\u95f4\u3001\u63d2\u5165\u635f\u8017\u3001\u56de\u6ce2\u635f\u8017\u4e0e\u9a7b\u6ce2\u6bd4\u7b49\u6307\u6807\u3002\u914d\u5957\u8981\u70b9\u53ef\u76f4\u63a5\u7528\u4e8e\u8bbe\u8ba1\u8bc4\u5ba1\u4e0e\u5de5\u827a\u786e\u8ba4\u3002"},"_slim_seo_primary_term_category":0,"_slim_seo_primary_term_post_tag":0,"footnotes":""},"categories":[407,26],"tags":[],"class_list":["post-2614","post","type-post","status-publish","format-standard","hentry","category-pcb-materials","category-blog"],"_links":{"self":[{"href":"https:\/\/www.jingpengpcb.com\/en\/wp-json\/wp\/v2\/posts\/2614","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jingpengpcb.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.jingpengpcb.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.jingpengpcb.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.jingpengpcb.com\/en\/wp-json\/wp\/v2\/comments?post=2614"}],"version-history":[{"count":4,"href":"https:\/\/www.jingpengpcb.com\/en\/wp-json\/wp\/v2\/posts\/2614\/revisions"}],"predecessor-version":[{"id":19888,"href":"https:\/\/www.jingpengpcb.com\/en\/wp-json\/wp\/v2\/posts\/2614\/revisions\/19888"}],"wp:attachment":[{"href":"https:\/\/www.jingpengpcb.com\/en\/wp-json\/wp\/v2\/media?parent=2614"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.jingpengpcb.com\/en\/wp-json\/wp\/v2\/categories?post=2614"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.jingpengpcb.com\/en\/wp-json\/wp\/v2\/tags?post=2614"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}