Transmitter-receiver for use in broadband wireless access commun

Details Transmitter-receiver for use in broadband wireless access commun Transmitter-receiver for use in broadband wireless access commun

1999-04-02

2000-09-05

Tsang, Fan

Telecommunications

Transmitter and receiver at same station

455 86, 455 78, 455 84, 455 85, 455 75, 455 83, 455550, 455575, 455403, 455503, 455120, 455121, H04Q 732

Patent

active

061155845

ABSTRACT:
A transmitter-receiver includes a transmitting circuit for providing an output by converting the frequency of a transmission signal input thereto, a receiving circuit for providing an output by converting the frequency of a received signal input thereto, and a local oscillator which generates an oscillation signal having a local oscillating frequency based on a reference signal. A local oscillator signal splitter is connected to the local oscillator and splits the oscillation signal into substantially similar transmit and receive oscillation signals each at the local oscillating frequency. The local oscillator signal splitter supplies the transmit oscillation signal to the transmitting circuit and supplies the receive oscillation signal to the receiving circuit. The transmitting circuit converts the frequency of the transmission signal in accordance with said transmit oscillation signal, and the receiving circuit converts the frequency of the received signal in accordance with the receive oscillation signal.

REFERENCES:
patent: 3681697 (1972-08-01), Moroney
patent: 5689819 (1997-11-01), Nishimura et al.
patent: 5838730 (1998-11-01), Cripps
patent: 5966666 (1999-11-01), Yamaguchi et al.
patent: 6002920 (1999-12-01), Consolazio et al.

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