A 24-GHz CMOS Front-End

Creators: Guan, Xiang; Hajimiri, Ali

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Abstract

This paper reports the first 24-GHz CMOS front-end in a 0.18-µm process. It consists of a low-noise amplifier (LNA) and a mixer and downconverts an RF input at 24GHz to an IF of 5 GHz. It has a power gain of 27.5 dB and an overall noise figure of 7.7 dB with an input return loss, S[sub]11 of 21 dB consuming 20 mA from a 1.5-V supply. The LNA achieves a power gain of 15 dB and a noise figure of 6 dB on 16 mA of dc current. The LNA's input stage utilizes a common-gate with resistive feedthrough topology. The performance analysis of this topology predicts the experimental results with good accuracy.

Additional Information

"©2004 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE." Manuscript received April 4, 2003; revised September 26, 2003. The authors would like to thank Jazz Semiconductor Inc. for fabrication of the front-end. They are grateful for the support of Lee Center, NSF-ERC, and NSF. They are especially grateful for the help and advice of M. Racanelli, S. Stetson, A. Karroy, and M. Knight of Jazz Semiconductor, and Prof. D. Rutledge, H. Hashemi, H.Wu, D. Lu, D. Ham, I. Aoki, S. Kee, L. Cheung, B. Analui, and A. Natarajan of Caltech.

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