基本信息:
- 专利标题： FREQUENCY CONVERTER CIRCUIT
- 专利标题（中）：FREQUENZUMWANDLUNGSSCHALTUNG
- 申请号：EP88904661.1 申请日：1988-06-01
- 公开(公告)号：EP0317642B1 公开(公告)日：1997-03-12
- 发明人： SHIOMI, Yasufumi
- 申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
- 申请人地址： 1006, Oaza Kadoma Kadoma-shi, Osaka-fu, 571 JP
- 专利权人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
- 当前专利权人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
- 当前专利权人地址： 1006, Oaza Kadoma Kadoma-shi, Osaka-fu, 571 JP
- 代理机构： Patentanwälte Leinweber & Zimmermann
- 优先权： JP138525/87 19870602
- 国际公布： WO8810024 19881215
- 主分类号： H03D7/02
- IPC分类号： H03D7/02 ; H03D9/06 ; H04J11/00
摘要：
A frequency converter circuit used for a receiver for satellite broadcast. Local oscillation signals are supplied from a single local oscillation circuit (8) to mixer circuits (11a, 11b) of electric signal processing circuits (4, 5) of two or more systems, and a mixer diode (27) of each of the mixer circuits (11a, 11b) is biased with a direct current. Even the mixer diode (27) of the signal processing circuit of the system that is not in operation is biased with the direct current at all times, presenting advantage in regard to stable operation, small size, light weight, and low cost.
公开/授权文献:
- EP0317642A1 FREQUENCY CONVERTER CIRCUIT 公开/授权日：1989-05-31
IPC结构图谱:
| H | 电学 |
| --H03 | 基本电子电路 |
| ----H03D | 由一个载频到另一载频对调制进行解调或变换 |
| ------H03D7/00 | 从一个载频到另一载频调制的变换，例如频率变换 |
| --------H03D7/02 | .采用二极管 |