Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Patent
1995-11-28
1998-05-26
Faile, Andrew I.
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
455266, 455340, 455307, 375284, H04B 106
Patent
active
057582963
ABSTRACT:
A mobile telephone receiver, utilized in a cellular communications system, is provided with a group of IF bandpass filters which are arranged in parallel and which respectively have different passbands with each other. The IF filter group allows an incoming IF signal to be filtered out using one of the IF bandpass filters. A signal contamination determiner is operatively coupled to the IF filter group and detemines a degree of signal contamination by examining a signal which has passed through the IF. bandpass filter selected for filtering the incoming IF signal. The selector changes the selection of the IF bandpass filters according to the degree of signal contamination.
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patent: 5287556 (1994-02-01), Cahill
patent: 5303413 (1994-04-01), Braegas
patent: 5339455 (1994-08-01), Vogt et al.
patent: 5499394 (1996-03-01), Kaatz et al.
patent: 5564093 (1996-10-01), Matsumoto
patent: 5584056 (1996-12-01), Kim
European Search Report, dated May 30, 1997.
Faile Andrew I.
Moe Aung S.
NEC Corporation
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