Title :
A 24-GHz CMOS front-end
Author :
Guan, Xiang ; Hajimiri, Ali
Author_Institution :
California Inst. of Technol., Pasadena, CA, USA
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 24 GHz 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, S11 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.
Keywords :
CMOS analogue integrated circuits; frequency convertors; integrated circuit noise; microwave amplifiers; mixers (circuits); radio receivers; -21 dB; 1.5 V; 15 dB; 20 mA; 24 GHz; 27.5 dB; 5 GHz; 6 dB; 7.7 dB; CMOS analog integrated circuits; CMOS front-end; LNA; RF amplifiers; RF input; common-gate; downconverts; input return loss; integrated circuits noise; low-noise amplifier; mixer; noise figure; power gain; receiver front-ends; resistive feedthrough topology; wireless communications; Bandwidth; Character generation; Circuit topology; Gain; Impedance matching; Low-noise amplifiers; Noise figure; Phased arrays; Radio frequency; Wireless communication;
Journal_Title :
Solid-State Circuits, IEEE Journal of
DOI :
10.1109/JSSC.2003.821783
