Telecommunications – Receiver or analog modulated signal frequency converter – Local control of receiver operation
Patent
1996-07-03
1999-11-02
Faile, Andrew I.
Telecommunications
Receiver or analog modulated signal frequency converter
Local control of receiver operation
4552501, H04B 106, H04B 700
Patent
active
059786655
ABSTRACT:
A receiver for use in a cellular communication system includes a first amplifying circuit for amplifying a received signal, an attenuating circuit for selectively attenuating the amplified signal in response to a control signal, a first converting circuit for converting the attenuated signal into an intermediate frequency signal, a second amplifying circuit for amplifying the intermediate frequency signal, a limiter for limiting the amplitude of the amplified intermediate frequency signal, a second converting circuit for converting the current of the amplified intermediate frequency signal or the amplitude-limited intermediate frequency signal into a first direct voltage, a determiner for outputting the control signal for attenuating a received signal strength indicator (RSSI) of the amplified signal by a predetermined strength if the first direct voltage is greater than a predetermined reference voltage and for adding a predetermined voltage with the first direct voltage and then for outputting the added voltage as a second direct voltage, and a detector for detecting the RSSI from the second direct voltage.
REFERENCES:
patent: 5008631 (1991-04-01), Scherer et al.
patent: 5369792 (1994-11-01), Matsumoto et al.
patent: 5507023 (1996-04-01), Sganuma et al.
patent: 5603114 (1997-02-01), Tomita
Faile Andrew I.
Onuaku Christopher
Samsung Electronics Co,. Ltd.
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