Title :
A direct-conversion transceiver chip set for 900 MHz (ISM band) spread-spectrum digital cordless telephone
Author :
Tham, Joo Leong ; Hull, Chris ; Ali, Akbar ; Carr, Frank ; Chu, Robert ; Walley, John ; Koullias, Ico
Author_Institution :
Rockwell Int. Corp., Newport Beach, CA, USA
Abstract :
A three chip direct-conversion transceiver designed for use in the 900 MHz Industrial, Scientific and Medical (ISM) band is presented. The first chip provides the receive functions, the second the transmit functions and the third the synthesized local oscillator functions. The receiver has a maximum gain of 105 dB with greater than 80 dB of gain control range. The transmit chip includes a modulator and has selectable 0 dBm, +10 dBm and +20 dBm output power levels. The synthesizer has 41 programmable channels and includes a fully integrated VCO. The chip set is designed to operate over a 2.7 V to 5.0 V supply voltage range
Keywords :
UHF integrated circuits; bipolar integrated circuits; cordless telephone systems; digital radio; frequency synthesizers; gain control; land mobile radio; mixed analogue-digital integrated circuits; phase shift keying; spread spectrum communication; transceivers; 105 dB; 2.7 to 5 V; 902 to 928 MHz; ISM band; UHF IC; direct-conversion transceiver chip set; fully integrated VCO; gain control range; modulator; programmable channels; receive functions; spread-spectrum digital cordless telephone; synthesized local oscillator functions; transmit functions; Baseband; Filters; Gain control; Image converters; Local oscillators; Radio frequency; Spread spectrum communication; Telephony; Transceivers; Voltage;
Conference_Titel :
Circuits and Systems, 1996. ISCAS '96., Connecting the World., 1996 IEEE International Symposium on
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-3073-0
DOI :
10.1109/ISCAS.1996.541906
