计算机工程与应用
計算機工程與應用
계산궤공정여응용
COMPUTER ENGINEERING AND APPLICATIONS
2014年
13期
219-223
,共5页
ADS软件%信号分析仪%射频前端%噪声系数%灵敏度%自动增益控制
ADS軟件%信號分析儀%射頻前耑%譟聲繫數%靈敏度%自動增益控製
ADS연건%신호분석의%사빈전단%조성계수%령민도%자동증익공제
ADS software%signal analyzer%Radio Front-end%noise figure%sensitivity%Automatic Gain Control(AGC)
射频接收前端作为射频信号分析仪的重要组成部分,对射频(RF)信号的测量起着决定性的作用。使用ADS软件,构建了一种860~960 MHz的射频信号分析仪射频接收前端系统仿真平台。在设计中采用了前置低噪声放大器(LNA)来降低系统噪声,利用自动增益控制(AGC)来实现接收前端的大动态范围。对设计的射频接收前端的增益、噪声系数、灵敏度、动态范围等指标进行了分析计算,并通过仿真工具进行了仿真验证。仿真结果表明,所设计的射频接收前端各项指标均达到了设计要求。
射頻接收前耑作為射頻信號分析儀的重要組成部分,對射頻(RF)信號的測量起著決定性的作用。使用ADS軟件,構建瞭一種860~960 MHz的射頻信號分析儀射頻接收前耑繫統倣真平檯。在設計中採用瞭前置低譟聲放大器(LNA)來降低繫統譟聲,利用自動增益控製(AGC)來實現接收前耑的大動態範圍。對設計的射頻接收前耑的增益、譟聲繫數、靈敏度、動態範圍等指標進行瞭分析計算,併通過倣真工具進行瞭倣真驗證。倣真結果錶明,所設計的射頻接收前耑各項指標均達到瞭設計要求。
사빈접수전단작위사빈신호분석의적중요조성부분,대사빈(RF)신호적측량기착결정성적작용。사용ADS연건,구건료일충860~960 MHz적사빈신호분석의사빈접수전단계통방진평태。재설계중채용료전치저조성방대기(LNA)래강저계통조성,이용자동증익공제(AGC)래실현접수전단적대동태범위。대설계적사빈접수전단적증익、조성계수、령민도、동태범위등지표진행료분석계산,병통과방진공구진행료방진험증。방진결과표명,소설계적사빈접수전단각항지표균체도료설계요구。
As an important part of the Radio Front(RF)signal analyzer, the RF receiver front-end plays a decisive role in the measurement of the RF signal. This paper builds one kind of 860~960 MHz RF receiver front-end system simulation platform of RF signal analyzer using the Advanced Design System(ADS)software. The pre-LNA is used to reduce system noise, and AGC is used to achieve a large dynamic range of the RF receiver front-end in the design. The gain, noise figure, sensitivity, dynamic range and other indicators of RF front-end of the design are calculated, and simulated by the software simulation tools. The simulations show that the RF front-end designed in the paper meets the requirements of the design.