Radio wave reception device, radio wave clock

申请公布号：

US7835714(B2)

申请号：

US20090538581

申请日期：

2009.08.10

申请公布日期：

2010.11.16

申请人：

CASIO COMPUTER CO., LTD.

发明人：

SOMEYA KAORU

分类号：

G04G5/00;H04B1/26;H03G3/30;H04B1/10

主分类号：

G04G5/00

摘要：

A received low-frequency standard radio wave, which is an amplitude modulation signal, is converted to an intermediate frequency signal Sa, and is output to a detection circuit and an AGC circuit. The detection circuit and AGC circuit generates an RF control signal Sf1 and IF control signal Sf2 from the input intermediate frequency signal Sa, and controls an RF control circuit and IF control circuit by outputting the generated RF control signal Sf1 and IF control signal Sf2 to the RF control circuit and IF control circuit. By this a radio wave reception device can speed up AGC operation.