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frequency of operationincreasing beyond 1GHz, and above 1Gbps fordigital communications, this lumped-elementapproach is no longer valid, because the physicalsize of the circuit approaches the size of awavelength.Distributed models and analysis techniques are nowused instead of lumped-element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
一個(gè)LCD燈的小程序。不是我寫的。我只負(fù)責(zé)了調(diào)試。適用在ACEXEP1K30QC208-3上。我跑了SIMULATOR,管腳連接標(biāo)示了。我也下在電路板上試過了,沒有問題。要用到實(shí)驗(yàn)板上的兄弟們把CLK1改到TESTOUT3或者0就好了。綫幫助新手,人人有責(zé)。
標(biāo)簽: SIMULATOR ACEXEP LCD 208
上傳時(shí)間: 2015-04-10
上傳用戶:330402686
這是一本介紹8051的好書,看了這本書能對(duì)8051有所了解,本書有介紹指令、timer、interrup、uart幾乎是8051基本的功能都有說明,另外本書也有應(yīng)用電路能讓讀者了解8051。
標(biāo)簽: 8051
上傳時(shí)間: 2013-12-27
上傳用戶:cmc_68289287
用AVR實(shí)現(xiàn)軟USB轉(zhuǎn)RS232的全部資料,包含源碼與電路解
上傳時(shí)間: 2014-11-23
上傳用戶:tonyshao
altera Quartus II 減法器使用 配合LED,可自動(dòng)與手動(dòng)按鈕控製。 (含電路)
標(biāo)簽: Quartus altera LED II
上傳時(shí)間: 2013-12-13
上傳用戶:王楚楚
altera Quartus II FSM使用 可設(shè)定時(shí)間波形,手動(dòng)調(diào)整波形頻率。 (含電路)
標(biāo)簽: Quartus altera FSM II
上傳時(shí)間: 2016-02-13
上傳用戶:kbnswdifs
altera Quartus II TLC晶片控制 可控制暫存器,手動(dòng)調(diào)整內(nèi)碼。 (含電路)
標(biāo)簽: Quartus altera TLC 控制
上傳時(shí)間: 2016-02-13
上傳用戶:Zxcvbnm
altera Quartus II modelSim 自動(dòng)模擬搭配,內(nèi)有範(fàn)例。 (含電路)
標(biāo)簽: modelSim Quartus altera II
上傳時(shí)間: 2016-02-13
上傳用戶:lz4v4
關(guān)於宏晶STC89C51單片機(jī)IC芯片的詳細(xì)資料,內(nèi)有很多簡(jiǎn)單電路。
上傳時(shí)間: 2013-12-02
上傳用戶:佳期如夢(mèng)
這次把真正的把源程序公開了,而且還有詳細(xì)的原理教程,希望大家?guī)兔Π阉龅母茫С值钠骷唷? 這個(gè)下載線電路是我做過的中最穩(wěn)定的,成功率很高。你也可以直接使用現(xiàn)有的下載線或者Atmel的原版下 載線。Easy 51Pro串行編程器也支持AT89C2051了。《Easy 51Pro的製作及使用說明》中有詳細(xì)介紹。 有何問題或者發(fā)現(xiàn)了BUG請(qǐng)?jiān)谶@裡給我留言: http://enkj.com/gbook/guestbook.asp?user=digiboy
上傳時(shí)間: 2013-12-12
上傳用戶:xieguodong1234
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