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IEICE Transactions on Electronics 2008 E91-C(1):64-71; doi:10.1093/ietele/e91-c.1.64
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Copyright © 2008 The Institute of Electronics, Information and Communication Engineers

Regular Section -- Papers -- Microwaves, Millimeter-Waves

A 2-GHz Low-Power Down-Conversion Mixer in 0.18-µm CMOS Technology

Jun-Da CHEN1, Zhi-Ming LIN2 and Jeen-Sheen ROW1

1 The authors are with the Department of Electrical Engineering National Changhua University of Education, No. 2, Shu-Da Road, 500 Changhua, Taiwan, R.O.C. E-mail: d92621002{at}mail.ncue.edu.tw, 2 The author is with the Graduate Institute of Integrated Circuit Design National Changhua University of Education, No. 2, Shu-Da Road, 500 Changhua, Taiwan, R.O.C.


  Abstract

A low-voltage and low-power RF mixer for WCDMA applications is presented. The paper presents a novel topology mixer that leads to a better performance in terms of isolation and power consumption for low supply voltage. The measuring results of the proposed mixer achieve: 7 dB power conversion gain, 10.4 dB double side band (DSB) noise figure, –2 dBm input third-order intercept point (IIP3), and the total dc power consumption of this mixer including output buffers is 2.2 mW from a 1 V supply voltage. The current output buffer is about 1.96 mW, the excellent LO-RF, LO-IF and RF-IF isolation achieved up to 49 dB, 39.5 dB and 57.3 dB, respectively.

Key Words: CMOS mixer, double side band (DSB) noise figure, Gilbert cell mixers

Manuscript received June 4, 2007. Manuscript revised August 9, 2007.


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