A low power direct conversion receiver RF front-end with high in-band IIP2/IIP3 and low 1/f noise

被引：0
作者：
Baoyong Chi
Shuguang Han
Zhihua Wang
机构：
[1] Institute of Microelectronics,Department of Electronic Engineering
[2] Tsinghua University,undefined
[3] Tsinghua University,undefined
来源：
Analog Integrated Circuits and Signal Processing | 2011年 / 67卷
关键词：
Integrated circuits; Radio frequency circuits; Wireless receiver; CMOS; High linearity; Low power;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A low power direct-conversion receiver RF front-end with high in-band IIP2/IIP3 and low 1/f noise is presented. The front-end includes the differential low noise amplifier, the down-conversion mixer, the LO buffer, the IF buffer and the bandgap reference. A modified common source topology is used as the input stages of the down-conversion mixer (and the LNA) to improve IIP2 of the receiver RF front-end while maintaining high IIP3. A shunt LC network is inserted into the common-source node of the switching pairs in the down-conversion mixer to absorb the parasitic capacitance and thus improve IIP2 and lower down the 1/f noise of the down-conversion mixer. The direct-conversion receiver RF front-end has been implemented in 0.18 µm CMOS process. The measured results show that the 2 GHz receiver RF front-end achieves +33 dBm in-band IIP2, 21 dB power gain, 6.2 dB NF and −2.3 dBm in-band IIP3 while only drawing 6.7 mA current from a 1.8 V power supply.
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页码：131 / 136
页数：5
相关论文
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