CMOS monolithic wideband image rejection mixer with polyphase filters

Proceedings of the 2003 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference - IMOC 2003. (Cat. No.03TH8678) Pub Date : 2003-11-10 DOI:10.1109/IMOC.2003.1242684

F. Azevedo, M. J. Rosário, J. C. Freire

引用次数: 3

Abstract

The image rejection ratio in double balanced mixers is strongly dependent on the balance between its branches. The influence of mismatches is analysed and conclusions on the key aspects of the design to increase the image rejection are discussed. A practical circuit implementation is described: a 1.9 GHz downconversion image rejection mixer is fabricated in 0.6 /spl mu/m CMOS standard technology. Measurements on the prototype showed a 34 dB image rejection and an overall conversion gain of 16 dB.

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带多相滤波器的CMOS单片宽带图像抑制混频器

双平衡混合器的图像抑制比强烈依赖于其分支之间的平衡。分析了不匹配的影响，并讨论了提高图像抑制的关键设计方面的结论。介绍了一种实用的电路实现:以0.6 /spl mu/m CMOS标准工艺制作1.9 GHz下变频图像抑制混频器。对样机的测量表明，图像抑制为34 dB，总转换增益为16 dB。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Proceedings of the 2003 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference - IMOC 2003. (Cat. No.03TH8678)

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