A novel image rejection CMOS mixer using T-structure filter

Author

Anh-Tuan Pham ; Kim, Chang-Wan ; Kang, Min-Suk ; Chong, Mun-Suk ; Lee, Sang-Gug ; Su, Chun-Deok

Author_Institution

RFME Lab., Inf. & Commun. Univ., Daejon, South Korea

Volume

2

fYear

2004

fDate

18-21 Oct. 2004

Firstpage

1299

Abstract

In this paper, a new image rejection mixer in heterodyne architecture for 2 GHz band applications based on 0.18 μm CMOS technology is presented. The designed mixer uses a T-structure filter to suppress the image signal, leading to the improvements in the noise figure (NF) and conversion gain. An image rejection of 25-85 dB is obtained in a 150 MHz of bandwidth from 1.95 to 2.1 GHz with IF varying from 200 to 350 MHz. The simulation results show single-side band (SSB) NF of 5 dB improved by 3.4 dB. The conversion gain of 10.5 dB, improved by more than 3 dB. The circuit operates at the supply voltage of 1.8 V, and dissipates 12 mW.

Keywords

CMOS integrated circuits; heterodyne detection; integrated circuit design; microwave mixers; radiofrequency filters; 0.18 micron; 1.8 V; 1.95 to 2.1 GHz; 10.5 dB; 12 mW; 200 to 350 MHz; 5 dB; T-structure filter; conversion gain; heterodyne architecture; image rejection CMOS mixer; image signal suppression; single-side band noise figure; Amplitude modulation; Bandwidth; CMOS technology; Circuit simulation; Filters; Gain; Image converters; Noise figure; Noise measurement; Signal design;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State and Integrated Circuits Technology, 2004. Proceedings. 7th International Conference on

Print_ISBN

0-7803-8511-X

Type

conf

DOI

10.1109/ICSICT.2004.1436780

Filename

1436780