Telecommunications – Receiver or analog modulated signal frequency converter – With wave collector
Patent
1986-05-08
1988-06-21
Masinick, Michael A.
Telecommunications
Receiver or analog modulated signal frequency converter
With wave collector
455133, 455278, H04B 110
Patent
active
047529687
ABSTRACT:
An antenna diversity system for the mobile reception of frequency-modulated oscillations having a receiver, antennae and a diversity processor. An optimum system according to the invention includes 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 includes an FM demodulator (32) with a succeeding frequency sweep threshold detector (31) and a device 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 of 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).
REFERENCES:
patent: 3840875 (1974-10-01), Neal
patent: 4584712 (1986-04-01), Isobe et al.
Flachenecker Gerhard
Lindenmeier Heinz
Manner Ernst
Briody Thomas A.
Gadson Gregory P.
Masinick Michael A.
Streeter William J.
U.S. Philips Corporation
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