Patent ID: 6115591
Filing Date: 2000-09-05
Classification: H04B

Abstract:
A space diversity receiver for use in a radio transmission system, comprising:first and second antennas for receiving a radio frequency signal;a phase detector for detecting a phase difference between the signal received from said first antenna and the signal received from said second antenna, to generate a phase transition control signal;a phase changing apparatus for changing a phase of the signal received from said first antenna in response to said phase transition control signal generated from said phase detector;a signal-to-noise comparator for comparing a signal-to-noise ratio of the signal received from said first antenna with a signal-to-noise ratio of the signal received from said second antenna, to respectively generate first and second comparison signals;a first signal attenuator and amplifier for attenuating or amplifying a signal output from said phase changing apparatus in response to said first comparison signal;a second signal attenuator and amplifier for attenuating or amplifying the signal received from said second antenna in response to said second comparison signal; anda signal combiner for outputting a composite signal by combining a signal output from said first signal attenuator and amplifier with a signal output from said second signal attenuator and amplifier.