A 1 V 12 mW 2 GHz receiver with 49 dB image rejection in CMOS/SIMOX
A 1 V 12 mW 2 GHz receiver with 49 dB image rejection in CMOS/SIMOX
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CMOS/SIMOX 中具有 49 dB 镜像抑制能力的 1 V 12 mW 2 GHz 接收器
DOI：
10.1109/isscc.2001.912641
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发表时间：
2001
期刊：
影响因子：
--
通讯作者：
T. Tsukahara
中科院分区：
文献类型：
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作者：
M. Ugajin;J. Kodate;T. Tsukahara
降低功率的最有效方法之一是最小化电源电压，而LC调谐折叠混频器就是实现这一点的一种方法。为了降低成本，一个完全集成的图像抑制接收器，即不需要片外滤波器的接收器，是一个理想的目标。通常使用双正交下变频器来提供足够的镜像抑制，因为对信号进行了变换，以便在转换器输出端将转换器输入中的增益失配和相位误差降低到二阶。然而，双正交结构由于使用了六个混频器，所以功耗很大。尽管采用了单正交结构，但该2 GHz接收器可以抑制LO信号中的相位误差，并且无需修剪即可实现49分贝镜像抑制。
One of the most effective ways of reducing power is to minimize the supply voltage, and the LC-tuned folded mixer is one way to achieve this. For cost reduction, a fully-integrated image-rejecting receiver, i.e. one for which off-chip filters are not required, is a desirable target. A double-quadrature downconverter is usually used to provide sufficient image rejection because the signal is transformed so that gain mismatches and phase errors in the converter inputs are reduced to second-order at the converter outputs. However, the double-quadrature architecture consumes much power because six mixers are used. In spite of its single-quadrature architecture, this 2 GHz receiver suppresses phase errors in LO signals and achieves 49 dB image rejection without trimming.