Method and apparatus for predictably switching diversity...

Details Method and apparatus for predictably switching diversity... Method and apparatus for predictably switching diversity...

2005-03-22

2005-03-22

Trinh, Sonny (Department: 2685)

Telecommunications

Receiver or analog modulated signal frequency converter

With wave collector

C455S272000, C455S269000

Reexamination Certificate

active

06871054

ABSTRACT:
A low-cost diversity antenna switching system and method is realized by controlling bias voltages on PIN diodes. By increasing the reverse bias voltage impressed upon a PIN diode, an RF signal impressed upon the diode is increasingly attenuated. As the PIN diode is forward biased to conduct in the forward direction, RF attenuation decreases. Two or more PIN diodes are used to increasingly attenuate signals from one antenna as attenuation of signals from another antenna is gradually decreased. The progression of the bias voltages is accomplished using a microprocessor that monitors a received signal strength indicator (RSSI) signal from a radio receiver. The RSSI is used to control which of two antennas are coupled into the receiver by predicting a signal fade.

REFERENCES:
patent: 5263180 (1993-11-01), Hirayama et al.
patent: 5697075 (1997-12-01), Kim
patent: 5697083 (1997-12-01), Sano
patent: 5710995 (1998-01-01), Akaiwa et al.
patent: 5940452 (1999-08-01), Rich
patent: 6018651 (2000-01-01), Bruckert et al.
patent: 6023615 (2000-02-01), Bruckert et al.
patent: 6115591 (2000-09-01), Hwang
patent: 6296565 (2001-10-01), Kenkel et al.

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