A 1.8-GHz double-balanced CMOS receiver front-end

Author

Sandström, Torbjörn ; Sundström, Lars

Author_Institution

Dept. of Appl. Electron., Lund Univ., Sweden

Volume

2

fYear

1999

fDate

1999

Firstpage

834

Abstract

Two different mixers are compared in a differential 1.8-GHz CMOS receiver front-end with an LC tuned LNA. In the first mixer, each mixer switch is implemented with a single CMOS transistor. To decrease LO feed-through, each switch in the second mixer is implemented with a balanced complementary CMOS transmission gate. According to simulations with a 20 mV ΔV_T mismatch between the transistors in the mixer, the LO feed-through of the second implementation is more than 20 dB better than that of the first implementation. Simulations with a 3 V supply gives 15 dB gain, 25 mA current consumption, 2.1 dB NF (including gate induced noise), 0 dBm 1 dB compression point and +10 dB 1P₃

Keywords

CMOS analogue integrated circuits; UHF integrated circuits; UHF mixers; radio receivers; 1.8 GHz; 15 dB; 2.1 dB; 25 mA; 3 V; CMOS receiver front-end; CMOS transistor mixer switch; LC tuned LNA; UHF mixers; balanced complementary CMOS transmission gate; differential CMOS receiver; double-balanced receiver front-end; Bonding; CMOS technology; Circuits; Gain; Impedance matching; Interference; Noise measurement; Radio frequency; Switches; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1999. 42nd Midwest Symposium on

Conference_Location

Las Cruces, NM

Print_ISBN

0-7803-5491-5

Type

conf

DOI

10.1109/MWSCAS.1999.867764

Filename

867764