Antenna diversity reception system for eliminating reception...

H - Electricity – 04 – B

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325/87, 325/95

H04B 7/02 (2006.01) H04B 7/08 (2006.01)

Patent

CA 1257339

23 ABSTRACT Antenna diversity system. An antenna diversity system for the mobile reception of frequency-modulated oscillations comprising a receiver, antennae and a diversity processor. An optimum system according to the invention comprises an FM tuner with intermediate frequency part (2) and at least two antennae, while the diversity processor (3) receives an intermediate frequency signal or high-frequency signal, which corresponds to a given linear combination derived from the antenna signals. The diversity processor (3) further comprises an FM demodulator (32) with a succeeding frequency sweep threshold detector (31) and means by which, in dependence upon the occurrence of an interference-dependent frequency sweep pulse exceeding the frequency sweep threshold of the frequency sweep threshold detector (31) in the intermediate frequency or high- frequency signal, another linear combination derived from the antenna signals is supplied to the input side of the tuner with intermediate frequency part (2).

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