A Low-Voltage High-Gain Quadrature Up-Conversion 5 GHz CMOS RF Mixer

Wan-Rone LIOU  Mei-Ling YEH  Sheng-Hing KUO  Yao-Chain LIN  

IEICE TRANSACTIONS on Electronics   Vol.E93-C   No.5   pp.662-669
Publication Date: 2010/05/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E93.C.662
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Electronic Circuits
radio frequency,  low-voltage,  quadrature up-conversion mixer,  wireless communication,  

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A low-voltage quadrature up-conversion CMOS mixer for 5-GHz wireless communication applications is designed with a TSMC 0.18-µm process. The fold-switching technique is used to implement the low-voltage double balanced quadrature mixer. A miniature lumped-element microwave broadband rat-race hybrid and RLC shift network are used for the local oscillator and the intermediate frequency port design, respectively. The measured results demonstrate that the mixer can reach a high conversion gain, a low noise figure (NF), and a high linearity. The mixer exhibits improvement in noise, conversion gain, and image rejection. The mixer shows a conversion gain of 16 dB, a noise figure of 12.8 dB, an image rejection of 45 dB, while dissipating 15.5 mW for an operating voltage at 1 V.