| 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 |
