利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

21 条记录 (耗时 0.014 秒)

    Mixer circuit
    11.
    发明公开
    Mixer circuit 失效
    Mischschaltung。

    公开(公告)号：EP0190902A2

    公开(公告)日：1986-08-13

    申请号：EP86300694.6

    申请日：1986-02-03

    申请人： NEC CORPORATION

    发明人： Shizume, Yasumichi c/o NEC Corporation

    IPC分类号： H03D9/06

    CPC分类号： H03D9/0633 ,  H03D7/18 ,  H03D2200/0037 ,  H03D2200/009

    摘要： In order to be able to use a selected one of two local oscillation signals with respective input terminals (2, 3), a microwave mixer has a radio frequency input terminal connected by way of a transmission line section (5) to one terminal of a mixer diode (6). The other diode terminal is connected to a quarter wavelength line section (7) and to an intermediate frequency output terminal (4) by way of a line section incorporating a low pass filter (10). Transmission line sections connected to the local oscillation terminals (2,3) are coupled to the quarter wavelength section (7) by respective distribution coupling type bandpass filters (8,9) tuned to the two different local oscillation frequencies.

    摘要翻译： 为了能够使用两个本地振荡信号中的选择的一个与各个输入端子（2,3），微波混频器具有通过传输线路部分（5）连接到一个终端的射频输入端子 混频二极管（6）。 另一个二极管端子通过包含低通滤波器（10）的线路部分连接到四分之一波长线部分（7）和中频输出端子（4）。 连接到本地振荡端子（2,3）的传输线路段通过调谐到两个不同的本地振荡频率的分配耦合型带通滤波器（8,9）耦合到四分之一波长部分（7）。

    Microwave integrated circuit mixer
    12.
    发明公开
    Microwave integrated circuit mixer 失效
    微波集成电路混频器

    公开(公告)号：EP0068870A3

    公开(公告)日：1983-11-02

    申请号：EP82303372

    申请日：1982-06-28

    申请人： Matsushita Electric Industrial Co., Ltd.

    发明人： Saka, Hiroshi ,  Tanaka, Toshihide

    IPC分类号： H03D09/06

    CPC分类号： H03D9/0633 ,  H03D2200/0037

    摘要： In a mixer using a planar circuit such as a strip line or a microstrip line etc., an IF signal interruption circuit (9, 27) which passes an RF signal but exhibits an open-circuit impedance against an IF signal is provided in shunt with a main line (2,21) on which the RF signal propagates toward a mixer diode (3, 22), and a low-pass filter (10, 11, 28) is connected in the vicinity of the IF signal interruption circuit in order to short-circuit a mount point of the diode for the IF signal by high frequency short-circuiting technique wherein an open-ended quarter wavelength transmission line or a short-circuited half-wavelength transmission line is used, whereby low noise performance can be obtained over a wide frequency band even under such an operating condition that the IF signal is in the GHz band.

    FREQUENCY CONVERTER CIRCUIT
    16.
    发明授权
    FREQUENCY CONVERTER CIRCUIT 失效
    FREQUENZUMWANDLUNGSSCHALTUNG

    公开(公告)号：EP0317642B1

    公开(公告)日：1997-03-12

    申请号：EP88904661.1

    申请日：1988-06-01

    申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

    发明人： SHIOMI, Yasufumi

    IPC分类号： H03D7/02 ,  H03D9/06 ,  H04J11/00

    CPC分类号： H03D7/02 ,  H03D9/0633 ,  H03D2200/0037 ,  H03D2200/0043

    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.

    FREQUENCY CONVERTER CIRCUIT.
    19.
    发明公开
    FREQUENCY CONVERTER CIRCUIT. 失效
    FREQUENZUMWANDLUNGSSCHALTUNG。

    公开(公告)号：EP0317642A4

    公开(公告)日：1989-10-17

    申请号：EP88904661

    申请日：1988-06-01

    申请人： MATSUSHITA ELECTRIC IND CO LTD

    发明人： SHIOMI YASUFUMI

    IPC分类号： H03D7/02 ,  H03D9/06

    CPC分类号： H03D7/02 ,  H03D9/0633 ,  H03D2200/0037 ,  H03D2200/0043

    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.

    摘要翻译： 一种用于卫星广播接收机的变频器电路。 本地振荡信号从单个本地振荡电路（8）提供给两个或更多系统的电信号处理电路（4,5）的混频器电路（11a，11b），并且混频器二极管（27） 电路（11a，11b）被直流偏置。 即使是不工作的系统的信号处理电路的混频器二极管（27）也始终以直流偏置，在运行稳定，体积小，重量轻和成本低方面具有优势。