Receiver including a multipath transmission detector

Details Receiver including a multipath transmission detector Receiver including a multipath transmission detector

H - Electricity

04

B

325/87

H04B 7/02 (2006.01) H04B 1/10 (2006.01) H04B 7/08 (2006.01)

Patent

CA 1259102

ABSTRACT Receivers including a multipath transmission detector for detecting multipath distortion in angle-modulated input signals originating from inter alia a first antenna, are often erroneously triggered, more specifically in the case of weak signals, which in diversity systems having a plurality of antennas results in unnecessary switching action. By providing the receiver with a frequency window circuit which inhibits the detection of multipath distortion as long as the instantaneous frequency of the input signal is located outside the frequency window, erroneously recognizing distortion as multipath distortion due to a limited bandwidth of the receiver is reduced. The frequency window circuit can, for example, be in the form of a bandpass filter or a level detector connected to a demodulator.

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