該款立體聲調(diào)制度監(jiān)視儀/分析儀可以保證FM發(fā)射記優(yōu)質(zhì)工作和 FM 電臺(tái)保持在最大的調(diào)制電平或?qū)Πl(fā)射機(jī)的性能進(jìn)行檢測(cè)。根據(jù)全美和國(guó)際標(biāo)準(zhǔn)，該款監(jiān)視儀特設(shè)頻率合成的RF預(yù)選器，可按50KHZ檔預(yù)選頻率。精確 的 基帶解調(diào)，PLL 立體聲信道解碼，線性相位濾波器，為監(jiān)視調(diào)制度電平和性能的檢測(cè)提供了全面的方便的測(cè)試。多路音頻輸入可供檢測(cè)和外接失真儀。該款儀器外接天線時(shí)可與低電平 RF輸入端連接，也可經(jīng)傳輸線耦合到高電平 RF輸入端。
標(biāo)簽： 調(diào)頻 調(diào)制 監(jiān)視儀 分析儀
上傳時(shí)間： 2013-11-15
上傳用戶：skhlm
Abstract: Many industrial/scientific/medical (ISM) band radio frequency (RF) products use crystal oscillators to generate areference for the phase-locked loop (PLL)-based local oscillator (LO). This tutorial provides a basic description of theISM-RF Crystal Calculator, which can be used to calculate various impacts on crystal frequency accuracy and startupmargin for such an LO.
上傳時(shí)間： 2013-11-15
上傳用戶：JasonC
本書(shū)內(nèi)容包括三大部分：第1 部分從運(yùn)算放大器的基本概念和理論出發(fā)，重點(diǎn)介紹了運(yùn)算放大器的原理與設(shè)計(jì)，以及在各種電子系統(tǒng)中的應(yīng)用，包括視頻應(yīng)用、RF/IF 子系統(tǒng)(乘法器、調(diào)制器和混頻器)等;第2 部分主要介紹了高速采樣和高速ADC 及其應(yīng)用、高速DAC 及其應(yīng)用、以及DDS 系統(tǒng)與接收機(jī)子系統(tǒng)等;第3 部分介紹了有關(guān)高速硬件設(shè)計(jì)技術(shù)，如仿真、建模、原型、布局、去藕與接地，以及EMI 與RFI設(shè)計(jì)考慮等。 書(shū)中內(nèi)容既有完整的理論分析，又有具體的實(shí)際應(yīng)用電路，還包括許多應(yīng)用技巧。特別適合電子電路與系統(tǒng)設(shè)計(jì)工程師、高等院校相關(guān)專業(yè)師生閱讀。
標(biāo)簽： ADI 處理器 高速設(shè)計(jì)
上傳時(shí)間： 2013-11-16
上傳用戶：qitiand
Abstract: The MAX9930–MAX9933 family of RF controllers and detector can be used in a wide variety of applications. Anideal application is cable television (CATV) over fiber, where either a RF controller or a RF detector controls the gain of atransimpedance amplifier (TIA). This application note shows how the MAX9930 (RF controller) can be used as either theRF controller or detector.
上傳時(shí)間： 2013-10-11
上傳用戶：Pzj
Linear Technology’s High Frequency Product lineupincludes a variety of RF I/Q modulators. The purpose ofthis application note is to illustrate the circuits requiredto interface these modulators with several popular D/Aconverters. Such circuits typically are required to maximizethe voltage transfer from the DAC to the baseband inputsof the modulator, as well as provide some reconstructionfi ltering.
標(biāo)簽： DA轉(zhuǎn)換 接口 射頻 調(diào)制
上傳時(shí)間： 2013-10-19
上傳用戶：FreeSky
噪聲系數(shù)(NF)是RF系統(tǒng)設(shè)計(jì)師常用的一個(gè)參數(shù)，它用于表征RF放大器、混頻器等器件的噪聲，并且被廣泛用作無(wú)線電接收機(jī)設(shè)計(jì)的一個(gè)工具。許多優(yōu)秀的通信和接收機(jī)設(shè)計(jì)教材都對(duì)噪聲系數(shù)進(jìn)行了詳細(xì)的說(shuō)明(例如參考文獻(xiàn)1)，本文重點(diǎn)討論該參數(shù)在數(shù)據(jù)轉(zhuǎn)換器中的應(yīng)用。
標(biāo)簽： ADC 噪聲系數(shù) 參數(shù)
上傳時(shí)間： 2013-11-05
上傳用戶：李彥東
Radio Frequency Integrated Circuit Design I enjoyed reading this book for a number of reasons. One reason is that itaddresses high-speed analog design in the context of microwave issues. This isan advanced-level book, which should follow courses in basic circuits andtransmission lines. Most analog integrated circuit designers in the past workedon applications at low enough frequency that microwave issues did not arise.As a consequence, they were adept at lumped parameter circuits and often notcomfortable with circuits where waves travel in space. However, in order todesign radio frequency (RF) communications integrated circuits (IC) in thegigahertz range, one must deal with transmission lines at chip interfaces andwhere interconnections on chip are far apart. Also, impedance matching isaddressed, which is a topic that arises most often in microwave circuits. In mycareer, there has been a gap in comprehension between analog low-frequencydesigners and microwave designers. Often, similar issues were dealt with in twodifferent languages. Although this book is more firmly based in lumped-elementanalog circuit design, it is nice to see that microwave knowledge is brought inwhere necessary.Too many analog circuit books in the past have concentrated first on thecircuit side rather than on basic theory behind their application in communications.The circuits usually used have evolved through experience, without asatisfying intellectual theme in describing them. Why a given circuit works bestcan be subtle, and often these circuits are chosen only through experience. Forthis reason, I am happy that the book begins first with topics that require anintellectual approach—noise, linearity and filtering, and technology issues. Iam particularly happy with how linearity is introduced (power series). In therest of the book it is then shown, with specific circuits and numerical examples,how linearity and noise issues arise.
標(biāo)簽： Rogers Radio John Freq
上傳時(shí)間： 2014-12-23
上傳用戶：han_zh
高速數(shù)據(jù)轉(zhuǎn)換器評(píng)估平臺(tái)(HSDCEP)是基于PC的平臺(tái)，提供評(píng)估Maxim RF數(shù)/模轉(zhuǎn)換器(RF-DAC，支持更新速率≥ 1.5Gsps)和Maxim數(shù)字上變頻器(DUC)的齊全工具。HSDCEP可以在每對(duì)數(shù)據(jù)引腳產(chǎn)生速率高達(dá)1.25Gbps的測(cè)試碼型，支持多達(dá)4條并行16位LVDS總線。通過(guò)USB 2.0端口將最長(zhǎng)64兆字(Mw)、每字16位寬的數(shù)據(jù)碼型裝載至HSDCEP存儲(chǔ)器
標(biāo)簽： HSDCEP 高速數(shù)據(jù) 轉(zhuǎn)換器 評(píng)估平臺(tái)
上傳時(shí)間： 2013-10-25
上傳用戶：zycidjl
成功的 RF 設(shè)計(jì)必須仔細(xì)注意整個(gè)設(shè)計(jì)過(guò)程中每個(gè)步驟及每個(gè)細(xì)節(jié) 這意味著必須在設(shè)計(jì)開(kāi)始階段就要進(jìn)行徹底的 仔細(xì)的規(guī)劃 并對(duì)每個(gè)設(shè)計(jì)步驟的進(jìn)展進(jìn)行全面持續(xù)的評(píng)估 而這種細(xì)致的設(shè)計(jì)技巧正是國(guó)內(nèi)大多數(shù)電子企業(yè)文化所欠缺的 近幾年來(lái)，由于藍(lán)芽設(shè)備無(wú)線局域網(wǎng)絡(luò)（WLAN）設(shè)備和行動(dòng)電話的需求與成長(zhǎng) 促使業(yè)者越來(lái)越關(guān)注 RF 電路設(shè)計(jì)的技巧 從過(guò)去到現(xiàn)在 RF 電路板設(shè)計(jì)如同電磁干擾（EMI）問(wèn)題一樣 一直是工程師們最難掌控的部份 甚至是夢(mèng)魘 若想要一次就設(shè)計(jì)成功 必須事先仔細(xì)規(guī)劃和注重細(xì)節(jié)才能奏效
標(biāo)簽： 射頻電路板 設(shè)計(jì)技巧
上傳時(shí)間： 2013-11-13
上傳用戶：liuwei6419
DSP系統(tǒng)的降噪技術(shù),PowerPCB在印制電路板設(shè)計(jì)中的應(yīng)用技術(shù),PCB互連設(shè)計(jì)過(guò)程中最大程度降低RF效應(yīng)的基本方法
標(biāo)簽： PCB
上傳時(shí)間： 2013-10-11
上傳用戶：gmh1314
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