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A 5.6-GHz CMOS doubly balanced sub-harmonic mixer for direct conversion -zero IF receiver

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3 Author(s)
Upadhyaya, P. ; Dept. of Electr. Eng. & Comput. Sci., Washington State Univ., Pullman, WA, USA ; Rajashekharaiah, M. ; Heo, D.

A new low power 5.6 GHz doubly balanced sub-harmonic mixer for industrial scientific medical (ISM) band direct conversion - zero IF receiver in 0.25-μm CMOS is presented. The mixer uses a power efficient LO frequency generation scheme to overcome the LO self-mixing problems common in conventional direct conversion receivers (DCR). Simulated with 1% gm mismatch, 0.5% load mismatch and 2° LO phase error, the mixer is able to achieve 55 dBm of IIP2, -6.5 dBm of IIP3 and voltage conversion gain of 8 dB while consuming less than 1.75 mA from a single 3 V supply. The mixer also achieves input compression of -12 dBm and an overall double side band noise figure of 5.96 dB. The proposed mixer takes up less than 1 mm2 of silicon real estate.

Published in:

Microelectronics and Electron Devices, 2004 IEEE Workshop on

Date of Conference:

2004