发明名称 Automatic gain control apparatus.
摘要 <p>An automatic gain control apparatus comprises a variable gain amplifier 5 amplifying a signal with an amplification factor and a gain controller 6 controlling the amplification factor of the variable gain amplifier 5. A gain limiter 7 is provided for restricting the magnitude of said amplification factor within a predetermined range. The amplification factor therefore does not vary largely, even immediately after the input signal level is suddenly changed due to switching of transmitter antenna or carrier frequency. Thus, it becomes possible to quickly respond to the change of input signal without requiring a large dynamic range in the circuit following the automatic gain control apparatus. <IMAGE></p>
申请公布号 EP0630106(A1) 申请公布日期 1994.12.21
申请号 EP19940303968 申请日期 1994.06.02
申请人 MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. 发明人 KINOSHITA, NORIHITO
分类号 H04B7/005;H03G3/20;H04B1/713;H04J13/00;(IPC1-7):H03G3/20 主分类号 H04B7/005
代理机构 代理人
主权项
地址