公开(公告)号：US4691376A

公开(公告)日：1987-09-01

申请号：US806863

申请日：1985-12-09

申请人： Hiroshi Watanabe ,  Takashi Johzuka ,  Masanobu Suzuki

发明人： Hiroshi Watanabe ,  Takashi Johzuka ,  Masanobu Suzuki

IPC分类号： H03B5/18 ,  H03D9/06 ,  H04B1/26

CPC分类号： H03D9/0633 ,  H03B5/1852 ,  H03B5/1876

摘要： A frequency converter for use in a 4 GHz-band comprising a printed circuit board and a shield case. The printed circuit board is provided in the shield case and composed of an input terminal, and successively, a circuit of low noise amplifier, a band pass filter, a mixer and a circuit of local oscillator connected to the mixer. The constitution of the frequency converter is simplified, and accordingly the mass productivity, yield of production and reliability of the fabricated converter are greatly improved.

摘要翻译： 一种用于4GHz频带的变频器，包括印刷电路板和屏蔽壳。 印刷电路板设置在屏蔽壳体中，由输入端子构成，依次连接到混频器的低噪声放大器，带通滤波器，混频器和本地振荡器的电路。 简化变频器的结构，大大提高了转换器的批量生产率，生产成本和可靠性。