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引用本文：

汪玉平.一种大动态范围射频接收机的设计[J].电讯技术，2010，50（7）： - . [点击复制]
WANG Yu-ping.Design of a RF Receiver with Wide Dynamic Range[J].，2010，50（7）： - . [点击复制]

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一种大动态范围射频接收机的设计
汪玉平
0 字体:加大+\|默认\|缩小-
(中国西南电子技术研究所，成都 610036)

摘要:

在宽频带、大双音动态、高增益、小功耗射频接收机的设计中，要在较低功耗下获得最大的双音动态范围，需综合考虑接收机的三阶互调截点（IP3）、各级器件的IP3及增益大小。从双音动态范围与IP3的关系出发，介绍了大动态范围接收机的设计方法。通过合理地分配各级器件增益和三阶截点大小，保证各级混频器有足够的线性余量，最后设计出增益为70 dB、双音动态范围为55 dB的低功耗射频接收机。

关键词: 射频接收机动态范围三阶截点非线性失真低功耗

DOI：

基金项目:

Design of a RF Receiver with Wide Dynamic Range

WANG Yu-ping

(Southwest Institute of Electronic Technology, Chengdu 610036,China)

Abstract:

In the design of wideband RF receiver with high dual tone dynamic range，high ga i n and low power consumption，IP3 of the receiver，IP3 and gain of each stage com ponent should be synthetically considered to obtain the highest dual ton e dynamic ran ge with lower power consumpution.In this paper，the relationship between the dua l ton e dynamic range and IP3 is introduced，and then a design method is desc ribed. By rationally allocating the gain of the compontes on eac h stage to assure that mixer on each stage has sufficient linerity margin, and t hen slecting the gain and IP3 of the IF amplifier, a low power consumption RF re ceiver is designed with a gain of 70 dB and the dual tone dynamic range of 55 dB .

Key words: RF receiver dynamic range third-order intercept point nolinear distortion low power consumption