A 0.25 μm CMOS transceiver front-end for GSM

Author

Piazza, Francesco ; Orsatti, Paolo ; Qiuting Huang

Author_Institution

Integrated Syst. Lab., Fed. Inst. of Technol., Zurich

fYear

1998

fDate

11-14 May 1998

Firstpage

413

Lastpage

416

Abstract

To meet GSM standards, critical building blocks in the RF front-end must provide low noise figures, high linearity and predictable gain, while requiring as few external passive components and consume as little current as possible. This paper presents a transceiver front-end in 0.25 μm CMOS, that includes an 18 mA LNA with 2 dB NF and -2.8 dBm output CP, a 6 mA mixer with 12.6 dB (SSB) NF and 9 dBm IP3, a 71 MHz IF amplifier with programmable gain between -20 to 60 dB in 2 dB steps. Consuming only 2.5 mA, the differential accuracy of the gain steps is within 0.3 dB, which enables the AGC amp to double as a received signal strength indicator. The transmitter pre-amplifier has 21 dB gain, an output CP of 5.8 dBm, requires no output filter and consumes 29 mA

Keywords

CMOS analogue integrated circuits; UHF integrated circuits; automatic gain control; cellular radio; integrated circuit noise; preamplifiers; transceivers; 0.25 micron; 12.6 dB; 18 mA; 2 dB; 21 dB; 29 mA; 6 mA; 71 MHz; AGC amp; CMOS transceiver front-end; GSM; IF amplifier; LNA; linearity; mixer; noise figures; received signal strength indicator; transmitter pre-amplifier; Amplitude modulation; Filters; GSM; Gain; Linearity; Noise figure; Noise measurement; Radio frequency; Transceivers; Transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Custom Integrated Circuits Conference, 1998. Proceedings of the IEEE 1998

Conference_Location

Santa Clara, CA

Print_ISBN

0-7803-4292-5

Type

conf

DOI

10.1109/CICC.1998.695009

Filename

695009