Spannungsgesteuerter Oszillator mit Leitungsresonator
    1.
    发明公开
    Spannungsgesteuerter Oszillator mit Leitungsresonator 失效
    Spannungsgesteuerter Oszillator mit Leitungsresonator。

    公开(公告)号:EP0330983A2

    公开(公告)日:1989-09-06

    申请号:EP89103057.9

    申请日:1989-02-22

    IPC分类号: H03C3/22 H03B5/18 H03C3/09

    摘要: Bei einem als Frequenz- und/oder Phasenmodulator wirkenden spannungsgesteuerten Oszillator mit Leitungsresonator und variierbaren Beschaltungskapazitäten wird der Modulations­zweig der Beschaltungskapazitäten zwischen den Resonator­enden an den Leitungsresonator angekoppelt, wobei die Lage des Ankoppelpunktes so gewählt ist, daß der Frequenzhub der Modulation über einen größeren Trägerfrequenzbereich im wesentlichem konstant ist.

    摘要翻译: 在作为频率和/或相位调制器的压控振荡器中,利用线谐振器和可变连接的电容器,连接的电容器的调制支路耦合到谐振器端之间的线谐振器,选择输入耦合点的位置 使得调制的频率偏差在相对宽的载波频率范围内基本上是恒定的。

    SSB modulator
    4.
    发明公开
    SSB modulator 失效
    Einseitenbandmodulator。

    公开(公告)号:EP0288035A2

    公开(公告)日:1988-10-26

    申请号:EP88106322.6

    申请日:1988-04-20

    IPC分类号: H03C1/60 H03C7/02 G01S13/02

    摘要: The SSB modulator according to the present invention is comprised of a driving voltage generator (5), a diode (3), a bias supply circuit (4), an impedance transformation circuit (2) and an input/output terminal (1). It is so arranged in the SSB modulator that the impedance of the diode (3) is changed by changing the driving voltage impressed to the diode (3), resulting in the mismatching of the impedance, which leads to generation of the reflected wave. Therefore, by changing the amplitude and the phase of the above-obtained reflected wave, SSB modulation is effected. Accordingly, the SSB modulator of the present invention requiring no particular side band filter is compact in size, light and weight and low in manufacturing cost, with a simple structure of the circuit.

    摘要翻译: 根据本发明的SSB调制器包括驱动电压发生器(5),二极管(3),偏置电源电路(4),阻抗变换电路(2)和输入/输出端子(1)。 在SSB调制器中,通过改变施加到二极管(3)的驱动电压来改变二极管(3)的阻抗,导致阻抗失配,导致反射波的产生。 因此,通过改变上述反射波的振幅和相位,实现SSB调制。 因此,采用简单的电路结构,本发明的SSB调制器的尺寸,重量轻,制造成本低,不需要特别的边带滤波器。

    Frequency modulator utilizing frequency synthesizer
    6.
    发明公开
    Frequency modulator utilizing frequency synthesizer 失效
    Einen Synthesierer verwendender频率调制器。

    公开(公告)号:EP0357996A1

    公开(公告)日:1990-03-14

    申请号:EP89114902.3

    申请日:1989-08-11

    申请人: NEC CORPORATION

    IPC分类号: H03C3/09

    摘要: The frequency modulator utilizing a frequency synthesizer comprises a voltage controlled oscillator (VCO-2), a programable frequency divider (4), a reference oscillator (8), a phase comparator and a phase locked loop. The VCO (2) comprises a first variable capacitor (24) receiving the control voltage from the phase comparator (6) and a second variable capacitor (26) receiving an input modulation signal. A bias circuit controls a bias to be supplied to the second variable capacitor (26) in accordance with the control voltage delivered from the phase comparator (6). An undesirable change of the modulation sensitivity due to difference of the oscillation frequency is compensated by controlling the reverse bias to be applied to the second variable capacitor (26) receiving the input modulation signal depending on the frequency control voltage for the VCO (2).

    摘要翻译: 利用频率合成器的频率调制器包括压控振荡器(VCO-2),可编程分频器(4),参考振荡器(8),相位比较器和锁相环。 VCO(2)包括从相位比较器(6)接收控制电压的第一可变电容器(24)和接收输入调制信号的第二可变电容器(26)。 偏置电路根据从相位比较器(6)发送的控制电压控制要提供给第二可变电容器(26)的偏置。 通过根据VCO(2)的频率控制电压控制接收输入调制信号的第二可变电容器(26)的反向偏置来补偿由于振荡频率的差异引起的调制灵敏度的不期望的改变。

    SSB modulator
    7.
    发明公开
    SSB modulator 失效
    SSB调制器

    公开(公告)号:EP0288035A3

    公开(公告)日:1990-02-07

    申请号:EP88106322.6

    申请日:1988-04-20

    IPC分类号: H03C1/60 H03C7/02 G01S13/02

    摘要: The SSB modulator according to the present invention is comprised of a driving voltage generator (5), a diode (3), a bias supply circuit (4), an impedance transformation circuit (2) and an input/output terminal (1). It is so arranged in the SSB modulator that the impedance of the diode (3) is changed by changing the driving voltage impressed to the diode (3), resulting in the mismatching of the impedance, which leads to generation of the reflected wave. Therefore, by changing the amplitude and the phase of the above-obtained reflected wave, SSB modulation is effected. Accordingly, the SSB modulator of the present invention requiring no particular side band filter is compact in size, light and weight and low in manufacturing cost, with a simple structure of the circuit.