高频高速电路设计与仿真分析实例-畅读网

　　　　

高频高速电路设计与仿真分析实例

作者：周润景

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内容简介:

本书介绍了Rainbow Studio 9.0电磁仿真软件的使用方法，不仅讲解了电磁场基础知识及其数值计算方法，还介绍了大量的仿真实例。本书涉及有限元、边界元、物理光学等多个算法引擎下的天线设计、微波或毫米波电路器件、雷达散射、电磁兼容与干扰、复杂电磁环境评估、射频电路芯片设计、PCB设计、过程弹跳射线追踪、电磁导航仿真系统、三维版图设计、三维准静态仿真分析验证等领域。为便于读者阅读、学习，特提供与本书配套的工程文件及操作视频文件，请访问华信教育资源网下载相关资源文件。

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SELECT `id`,`name` FROM `ls_goods_category` WHERE `id` = 5 LIMIT 1 [ RunTime:0.000835s ]
SELECT `id`,`name` FROM `ls_goods_category` WHERE `id` = 45 LIMIT 1 [ RunTime:0.000651s ]
SELECT `a`.*,`ap`.`width`,`ap`.`height` FROM `ls_ad` `a` INNER JOIN `ls_ad_position` `ap` ON `a`.`pid`=`ap`.`id` WHERE `pid` = 11 AND `ap`.`client` = '2' AND `a`.`status` = '1' AND `a`.`del` = '0' AND `ap`.`status` = '1' AND `ap`.`del` = '0' ORDER BY `sort` DESC,`id` DESC [ RunTime:0.001142s ]
SELECT `a`.*,`ap`.`width`,`ap`.`height` FROM `ls_ad` `a` INNER JOIN `ls_ad_position` `ap` ON `a`.`pid`=`ap`.`id` WHERE `pid` = 14 AND `ap`.`client` = '2' AND `a`.`status` = '1' AND `a`.`del` = '0' AND `ap`.`status` = '1' AND `ap`.`del` = '0' ORDER BY `sort` DESC,`id` DESC [ RunTime:0.001149s ]
SELECT * FROM `ls_goods` WHERE `del` = 0 AND `status` = 1 AND `create_time` <= 1772221069 ORDER BY `create_time` DESC LIMIT 5 [ RunTime:0.573999s ]

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