Single-Ended and Differential S-Parameters Differential circuits have been important incommunication systems for many years. In the past,differential communication circuits operated at lowfrequencies, where they could be designed andanalyzed using lumped-element models andtechniques. With the frequency of operationincreasing beyond 1GHz, and above 1Gbps fordigital communications, this lumped-elementapproach is no longer valid, because the physicalsize of the circuit approaches the size of awavelength.Distributed models and analysis techniques are nowused instead of lumped-element techniques.Scattering parameters, or S-parameters, have beendeveloped for this purpose [1]. These S-parametersare defined for single-ended networks. S-parameterscan be used to describe differential networks, but astrict definition was not developed until Bockelmanand others addressed this issue [2]. Bockelman’swork also included a study on how to adapt single-ended S-parameters for use with differential circuits[2]. This adaptation, called “mixed-mode S-parameters,” addresses differential and common-mode operation, as well as the conversion betweenthe two modes of operation.This application note will explain the use of single-ended and mixed-mode S-parameters, and the basicconcepts of microwave measurement calibration.
上傳時(shí)間： 2014-03-25
上傳用戶：yyyyyyyyyy
ORCAD在使用的時(shí)候總會出現(xiàn)這樣或那樣的問題…但下這個(gè)問題比較奇怪…在ORCAD中無法輸出網(wǎng)表…彈出下面的錯(cuò)誤….這種問題很是奇怪…Netlist Format: tango.dllDesign Name: D:\EDA_PROJECT\PROTEL99SE\YK\SV3200\MAIN.DSNERROR [NET0021] Cannot get part.[FMT0024] Ref-des not found. Possible Logical/Physical annotation conflict.[FMT0018] Errors processing intermediate file找了一天沒找到問題…終于在花了N多時(shí)間后發(fā)現(xiàn)問題所在…其實(shí)這個(gè)問題就是不要使用ORCAD PSPICE 庫里面的元件來畫電路圖…實(shí)際中我是用了PSPICE里面和自己制作的二種電阻和電容混合在一起…就會出現(xiàn)這種問題…
上傳時(shí)間： 2013-11-21
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電子發(fā)燒友網(wǎng)為大家提供了自制歐姆表及萬能表這本書的電子版，希望對您有所幫助！
上傳時(shí)間： 2013-10-21
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順序表基本操作
上傳時(shí)間： 2013-12-16
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數(shù)字萬用表使用···
標(biāo)簽： 萬用表的
上傳時(shí)間： 2013-11-03
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ASCII 字符表
上傳時(shí)間： 2013-10-12
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步進(jìn)電機(jī)驅(qū)動(dòng)器選型表
標(biāo)簽： 步進(jìn)電機(jī) 驅(qū)動(dòng)器 選型
上傳時(shí)間： 2013-10-14
上傳用戶：蔣清華嗯
雙擊導(dǎo)入后,在打開注冊表編輯器,可以從收藏夾快速定位到run
上傳時(shí)間： 2014-11-13
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包括了萬用表的很多使用技巧
上傳時(shí)間： 2013-11-11
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萬用表的常規(guī)性能
上傳時(shí)間： 2013-10-27
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