Contents Preface page xiii 1 Introduction 1 1.1 RF circuits 2 1.2 Narrowband nature of RF signals 3 1.3 AC circuit analysis – a brief review 3 1.4 Impedance and admittance 4 1.5 Series resonance 4 1.6 Parallel resonance 5 1.7 Nonlinear circuits 5 Problems 5 2 Impedance matching 10 2.1 Transformer matching 11 2.2 L-networks 12 2.3 Higher Q – pi and T-networks 14 2.4 Lower Q – the double L-network 15 2.5 Equivalent series and parallel circuits 16 2.6 Lossy components and efficiency of matching networks 16 Problems 17 3 Linear power amplifiers 19 3.1 Single-loop amplifier 19 3.2 Drive circuitry: common-collector, common-emitter, and common-base 20 3.3 Shunt amplifier topology 22 3.4 Dual-polarity amplifiers 22 3.5 Push–pull amplifiers 23 3.6 Efficiency calculations 25 3.7 AC amplifiers 26 3.8 RF amplifiers 29 3.9 Matching a power amplifier to its load 31 Problems 31 4 Basic filters 34 4.1 Prototype lowpass filter designs 35 4.2 A lowpass filter example 36 4.3 Lowpass-to-bandpass conversion 38 Appendix 4.1 Component values for normalized lowpass filters 41 Problems 43 References 45 5 Frequency converters 46 5.1 Voltage multiplier as a mixer 46 5.2 Switching mixers 48 5.3 A simple nonlinear device as a mixer 51 Problems 53 6 Amplitude and frequency modulation 54 6.1 Amplitude modulation 55 6.2 Frequency and phase modulation 58 6.3 AM transmitters 62 6.4 FM transmitters 65 6.5 Current broadcasting practice 65 Problems 66 7 Radio receivers 67 7.1 Amplification 67 7.2 Crystal sets 68 7.3 TRF receivers 68 7.4 The superheterodyne receiver 69 7.5 Noise blankers 74 7.6 Digital signal processing in receivers 75 Problems 75 References 76 8 Suppressed-carrier AM and quadrature AM (QAM) 77 8.1 Double-sideband suppressed-carrier AM 77 8.2 Single-sideband AM 78 8.3 Product detector 80 8.4 Generation of SSB 81 8.5 Single-sideband with class C, D, or E amplifiers 83 8.6 Quadrature AM (QAM) 84 Problems 85 References 86 9 Class-C, D, and E Power RF amplifiers 87 9.1 The class-C amplifier

gnu radio、OFDM PPT文档

CListCtrl中嵌入Check，Radio，CComboBOx等控件

微功率（短距离）无线电设备的技术要求，对于做无线电的工程师来说，这是基础知识

该书详细描述了GNU radio的安装以及与USRP的配合使用，在软件无线电领域有很大的用途

simulation and software radio for mobile communications

gr-adsb 一个GNU无线树外（OOT）模块，用于解调和解码自动相关监视广播（ADS-B）消息。 特征 通过GNU Radio和OsmoSDR支持许多SDR（USRP，RTL-SDR，HackRF，BladeRF等） 支持各种采样率（2 Msps，4 Msps，6 Msps等）。 注意：当前，采样率必须是符号率（2 Msym / s）的两倍的整数倍。 消息解码： DF 0：空空监视（ACAS） DF 4：监视高度答复 DF 5：监视身份回复 DF 11：全部通话回覆 DF 16：长时间空中监视（ACAS） DF 17：ADS-B扩展分频器 DF 18：来自非模式S应答器的CF = 0,1,6 ADS-B扩展的分频器 DF 19：AF = 0军用ADS-B扩展分散器 DF 20：Comm-B高度回复 DF 21：Comm-B身份回复 “简要”标准输出 “详细”标准输出 用法

ASTRO XTL5000 Digital Mobile Radio Basic Service Manual

Arduino-Radio.zip,一个Arduino库，用于控制像Si4703、Si4705、RDA5807M、TEA5767这样的调频收音机芯片。,Arduino是一家开源软硬件公司和制造商社区。Arduino始于21世纪初，深受电子制造商的欢迎，Arduino通过开源系统提供了很多灵活性。

入门GNU_Radio＋USRP很好的中文资料，有基础的可以在一天内入门上手。