Integrated CMOS transceivers using single-conversion standard IF or low IF RX for digital narrowband cordless systems

Author

Jerng, A. ; Truong, A. ; Wolday, D. ; Unruh, E. ; Landi, E. ; Wong, L. ; Fried, R. ; Gibbons, S.

Author_Institution

DSP Group, Santa Clara, CA, USA

fYear

2002

fDate

3-4 June 2002

Firstpage

111

Lastpage

114

Abstract

This paper describes a 0.25 /spl mu/m CMOS transceiver operating in the 902-928 MHz ISM band for US Narrowband Digital Cordless Telephony. The DS9RF31 transceiver, intended for TDD systems, meets all specifications while providing a low cost, small the size solution. The transmitter uses open-loop FSK modulation and the receiver uses a single-conversion image-reject architecture followed by an IF chain and demodulator that provides output data to a baseband IC for further processing. One version of the chip uses a standard 10.7 MHz IF with discrete channel filters. A second version (DS9RF32) integrates the IF channel filter by using a low-IF of 1.36 MHz.

Keywords

CMOS analogue integrated circuits; UHF amplifiers; UHF integrated circuits; UHF oscillators; cordless telephone systems; phase noise; transceivers; voltage-controlled oscillators; 902 to 928 MHz; LNA; digital narrowband cordless systems; downconversion mixers; integrated CMOS transceiver; integrated VCO; low IF RX; low cost; open-loop FSK modulation; passive polyphase filter; single-conversion Image-reject; single-conversion standard IF; small the size; Circuits; Filters; Frequency shift keying; Narrowband; Radio frequency; Synthesizers; Transceivers; Transmitters; Voltage; Voltage-controlled oscillators;

fLanguage

English

Publisher

ieee

Conference_Titel

Radio Frequency Integrated Circuits (RFIC) Symposium, 2002 IEEE

Conference_Location

Seattle, WA, USA

ISSN

1529-2517

Print_ISBN

0-7803-7246-8

Type

conf

DOI

10.1109/RFIC.2002.1011935

Filename

1011935