公开(公告)号：US4742569A

公开(公告)日：1988-05-03

申请号：US893641

申请日：1986-08-06

申请人： Hajime Yokoyama ,  Noboru Takada ,  Yusuke Okamoto ,  Makoto Torakawa ,  Takashi Ikegame

发明人： Hajime Yokoyama ,  Noboru Takada ,  Yusuke Okamoto ,  Makoto Torakawa ,  Takashi Ikegame

IPC分类号： H03J3/18 ,  H04B1/10

CPC分类号： H03J3/185

摘要： In a tuning circuit for AM receiver, tuning coils, oscillation coils and capacitance elements of an antenna tuning circuit, a radio frequency amplifier circuit, and a local oscillator circuit are accommodated in discrete shield casings for high frequency coils; and the discrete shield casings are disposed in a row and united with each other in the form of blocks, thereby eliminating the necessity to effect tracking adjustment.

摘要翻译： 在用于AM接收机的调谐电路中，天线调谐电路的调谐线圈，振荡线圈和电容元件，射频放大器电路和本地振荡电路容纳在用于高频线圈的离散屏蔽壳体中; 并且离散的屏蔽壳体被排列成一排并且以块的形式彼此结合，从而消除了进行跟踪调整的必要性。