TUNER FOR RECEIVING TELEVISION SIGNAL

申请公布号：

KR20000035706(A)

申请号：

KR19990052869

申请日期：

1999.11.26

申请公布日期：

2000.06.26

申请人：

ALPS ELECTRIC CO., LTD.

发明人：

NISHIMURA TAKASHI;YAMAMOTO MASAYOSHI

分类号：

H03J5/00;H03D7/12;H04B1/10;H04B1/26;H04N5/44;H04N5/50;(IPC1-7):H04N5/50

主分类号：

H03J5/00

摘要：

PURPOSE: A television signal receiving tuner is provided to increase an image quality of a television receiver by increasing an attenuation amount of an adjacent band separated from an intermediate frequency band of the television signal. CONSTITUTION: A television signal receiving tuner comprises an intermediate frequency amplifying circuit(3), an SAW filter(4) and an integration circuit(6). The integration circuit(6) comprises a mixer circuit(1) and an intermediate frequency circuit(5). The mixer circuit(1) receives a received television signal(RF) through an input terminal(1), and converts the television signal(RF) into an intermediate frequency signal(IF). The intermediate frequency amplifying circuit(3) amplifies the intermediate frequency signal(IF) provided through a terminal(8) of the integration circuit(6). The intermediate frequency signal(IF) is provided to an intermediate frequency circuit(5) of the circuit(6) through the SAW filter(4).