Telecommunications – Receiver or analog modulated signal frequency converter – Local control of receiver operation
Reexamination Certificate
2005-08-23
2005-08-23
Bui, Bing Q. (Department: 2642)
Telecommunications
Receiver or analog modulated signal frequency converter
Local control of receiver operation
C455S230000, C455S245200
Reexamination Certificate
active
06934522
ABSTRACT:
In an automatic gain control amplifier, an RF automatic gain controller controls the gain of a radio frequency signal. A frequency converter frequency-converts the radio frequency signal into an intermediate frequency signal. An IF automatic gain controller controls the gain of the intermediate frequency. A level detector detects a signal level of the gain-controlled intermediate frequency signal, and generates a level signal. An automatic gain control signal generator separately controls, based the level signal, the RF automatic gain controller and the IF automatic gain controller.
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Azakami Hiroshi
Kato Hisaya
Konishi Takaaki
Ozeki Hiroaki
Tokunaga Naoya
Bui Bing Q.
Matsushita Electric - Industrial Co., Ltd.
Wenderoth , Lind & Ponack, L.L.P.
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