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Low-Power Short-Range Radio CMOS Subharmonic RF Front-End Using CG-CS LNA

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2 Author(s)
Hui Teo, T. ; Inst. of Microelectron, A* STAR, Singapore ; Wooi Gan Yeoh

A 2.4-GHz fully integrated differential RF front-end was designed and implemented using 0.18-mum CMOS process. This design was targeted for low-power and low-cost applications such as short-range radio in biomedical devices. This RF front-end consists of a common-gate common-source low-noise-amplifier, a frequency doubler passive subharmonic mixer, and a resistive source degeneration intermediate frequency buffer. It consumes 2.5 mA from a 1.8-V supply. It occupies 950 mum times500 mum active area, which is only approximately 30% of that of the conventional RF front-end. This subharmonic RF front-end achieves 26-dB conversion gain, 9-dB noise figure and -10-dBm IIP3.

Published in:

Circuits and Systems II: Express Briefs, IEEE Transactions on  (Volume:55 ,  Issue: 7 )

Date of Publication:

July 2008

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