Universal radio architecture for low-tier personal communication

Details Universal radio architecture for low-tier personal communication Universal radio architecture for low-tier personal communication

1994-11-30

1997-07-15

Chin, Stephen

Pulse or digital communications

Transceivers

375273, 375283, 375302, 375323, 455 84, 455575, 455102, 455118, 455142, 455323, 329316, 332119, 370280, 370281, H04B 138

Patent

active

056489854

ABSTRACT:
An integrated circuit chip set is provided for use in a radio communication system in which a modulated digital input signal is processed for transmission and a modulated signal received from an antenna is processed to provide an output signal, wherein the modulation of the signals is either QPSK or FSK and the signal transmission and reception is by either TDD or FDD. The chip set includes an IF integrated circuit chip for processing a digital input signal to convert the digital input signal into an analog input signal and to provide the input signal at an intermediate frequency and for processing a received signal at the intermediate frequency to down convert the frequency thereof and to provide an output signal from the down-converted received signal; and an RF integrated circuit chip for processing the input signal provided by the IF chip at the intermediate frequency to up convert the frequency thereof to a transmission frequency and for processing a received signal provided at the reception frequency to down convert the frequency thereof to the intermediate frequency. The IF chip includes switches and terminals for enabling the IF chip to be connected for processing by the IF chip of QPSK-modulated signals or to be connected for processing by the IF chip of FSK-modulated signals; and the RF chip includes terminals for enabling the RF chip to be connected for processing by the RF chip of TDD transmitted and received signals or to be connected for processing by the RF chip of FDD transmitted and received signals.

REFERENCES:
patent: 5233643 (1993-08-01), Naeini et al.
patent: 5377229 (1994-12-01), Wilson et al.
patent: 5465409 (1995-11-01), Borras et al.
patent: 5475677 (1995-12-01), Arnold et al.
"Radio Equipment and Systems (RES); Digital European Cordless Telecommunications (DECT) Common interface," European Telecommunications Standards Institute, 1992.
Cox, D., "Wireless Network Access for Personal Communications", IEEE Communications Magazine, vol. 30, pp. 96-115, No. 12, Dec. 1992.
Madsen, B. and Fague, D., "Radios for the Future: Designing for DECT", RF design, Apr. 1993. pp. 48-53.

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