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    Variable frequency oscillator
    13.
    发明公开
    Variable frequency oscillator 失效
    Oszillator mitveränderbarerFrequenz。

    公开(公告)号：EP0516908A2

    公开(公告)日：1992-12-09

    申请号：EP91312111.7

    申请日：1991-12-31

    Applicant: MITSUBISHI DENKI KABUSHIKI KAISHA

    Inventor： Katoh, Takayuki, c/o Mitsub. Denki K. K., Optel.

    IPC: H03K3/354 ,  H03B5/24 ,  H03B5/18

    CPC classification number: H03B5/1852 ,  H01L2224/05554 ,  H01L2224/48137 ,  H01L2924/01019 ,  H01L2924/1305 ,  H01L2924/14 ,  H01L2924/1423 ,  H01L2924/19041 ,  H01L2924/3011 ,  H03B2200/0026 ,  H03B2200/0028 ,  H03B2200/004 ,  H03B2200/0062 ,  H03B2200/0092 ,  H03B2201/0208 ,  H03B2201/0225 ,  H01L2924/00

    Abstract: A variable frequency oscillator comprises a voltage controlled oscillator (1) including a variable capacitance diode (D), a control voltage (Vcont') applied to the diode (D), by which the output frequency of the voltage controlled oscillator (1) is controlled, a control voltage power supply (5) generating the control voltage (Vcont), and an impedance conversion means (1-5) for decreasing the output impedance of the control voltage power supply (5), provided between the voltage controlled oscillator (1) and the control voltage power supply (5). Therefore, a current having high current driving ability is applied to the voltage controlled oscillator (1), whereby the self-detecting voltage can be suppressed while the oscillation output of the circuit is increased. As a result, a variable frequency oscillator having an improved linearity of oscillation frequency can be obtained.

    Abstract translation: 可变频率振荡器包括压控振荡器，其包括可变电容二极管，施加到二极管的控制电压，通过该控制电压控制压控振荡器的输出频率，产生控制电压的控制电压电源和阻抗转换 用于降低压控振荡器和控制电压电源之间提供的控制电压电源的输出阻抗的装置。 因此，具有高电流驱动能力的电流被施加到压控振荡器，由此可以在电路的振荡输出增加的同时抑制自检测电压。 结果，可以获得具有改善的振荡频率线性度的可变频率振荡器。

    Controlled loop gain YIG tuned oscillator circuit
    14.
    发明授权
    Controlled loop gain YIG tuned oscillator circuit 失效
    控制环路增益YIG调谐振荡电路

    公开(公告)号：US5894248A

    公开(公告)日：1999-04-13

    申请号：US872743

    申请日：1997-06-11

    Applicant: Alden Bedard

    Inventor： Alden Bedard

    IPC: H03B1/00 ,  H03B5/18

    CPC classification number: H03B5/1888 ,  H03B2200/0062 ,  H03B2200/0066 ,  H03B2200/0094 ,  H03B2201/0216 ,  H03B2201/0225

    Abstract: A YIG oscillator circuit including a closed loop control system which maximizes loop gain during start-up and minimizes loop gain after start-up to minimize gain compression. In one embodiment the closed loop control circuit includes a PIN diode coupled between the collector and base of a BJT, and comparison circuitry for comparing the YIG oscillator output voltage level with a reference voltage and providing a resulting feedback current to the PIN diode at the collector of the BJT. In operation, during start-up when the output voltage of the YIG oscillator is less than the reference voltage, the feedback current will be minimal and the PIN diode will reverse bias to maximize loop gain. When the output voltage approaches the reference voltage level, the feedback current will increase to forward bias the PIN diode to reduce loop gain and minimize gain compression. In a second embodiment, the PIN diode is not included, and the closed loop control circuit output signal is coupled to the emitter of the BJT. In operation with the second embodiment, during start-up current provided to the emitter of the BJT will be at a maximum and the BJT reflection coefficient will be unaffected to maximize loop gain. When operation approaches steady-state, feedback current will decrease current to the emitter of the BJT to reduce the reflection coefficient of the BJT and thus reduce overall loop gain.

    Abstract translation: YIG振荡器电路包括一个闭环控制系统，可使启动期间的环路增益最大化，并使启动后的环路增益最小化，以最小化增益压缩。 在一个实施例中，闭环控制电路包括耦合在BJT的集电极和基极之间的PIN二极管和用于将YIG振荡器输出电压电平与参考电压进行比较并将所得到的反馈电流提供给集电极上的PIN二极管的比较电路 的BJT。 在运行中，当YIG振荡器的输出电压小于参考电压时，在启动期间，反馈电流将最小，并且PIN二极管将反向偏置以使环路增益最大化。 当输出电压接近参考电压电平时，反馈电流将增加以使PIN二极管正向偏置，以减少环路增益并最小化增益压缩。 在第二实施例中，不包括PIN二极管，并且闭环控制电路输出信号耦合到BJT的发射极。 在第二实施例的操作中，在启动期间，提供给BJT的发射极的电流将处于最大值，并且BJT反射系数将不受影响以使环路增益最大化。 当操作接近稳态时，反馈电流将减小BJT发射极的电流，以降低BJT的反射系数，从而降低总体环路增益。

    High frequency circuit device with stripline having an adjustable attachment position for varactor diode terminal
    15.
    发明授权
    High frequency circuit device with stripline having an adjustable attachment position for varactor diode terminal 失效
    带状线的高频电路器件具有用于变容二极管端子的可调连接位置

    公开(公告)号：US5708397A

    公开(公告)日：1998-01-13

    申请号：US669837

    申请日：1996-06-26

    Applicant: Nagahisa Furutani ,  Tsuneyuki Tanaka

    Inventor： Nagahisa Furutani ,  Tsuneyuki Tanaka

    IPC: H03B5/12 ,  H01P1/185 ,  H03B1/00 ,  H03B5/18

    CPC classification number: H03B5/1852 ,  H01P1/185 ,  H01L2224/48091 ,  H01L2224/48227 ,  H01L2924/19041 ,  H01L2924/3011 ,  H03B2201/0208 ,  H03B2201/0225

    Abstract: A high-frequency circuit device includes a varactor diode having a first terminal and a second terminal, a first strip line connected to the first terminal of the varactor diode, a voltage being applied to the varactor diode via the first terminal, a second strip line having a first end connected to the second terminal of the varactor diode, and a second open end. The second strip line has a length so as to obtain an equivalent strip line length taking into capacitances of the varactor diode and the second strip line. The equivalent strip line length determines a characteristic of the high-frequency circuit device.

    Abstract translation: 高频电路装置包括具有第一端子和第二端子的变容二极管，连接到变容二极管的第一端子的第一带状线，经由第一端子施加到变容二极管的电压，第二带状线 具有连接到变容二极管的第二端子的第一端和第二开口端。 第二带状线具有长度，以获得占据变容二极管和第二带状线的电容的等效带状线长度。 等效带线长度决定了高频电路装置的特性。

    Microwave mixing circuit and a VHF-UHF tuner having the mixing circuit
    16.
    发明授权
    Microwave mixing circuit and a VHF-UHF tuner having the mixing circuit 失效
    微波混合电路和具有混合电路的VHF-UHF调谐器

    公开(公告)号：US4340975A

    公开(公告)日：1982-07-20

    申请号：US195314

    申请日：1980-10-08

    Applicant: Hiroshi Onishi ,  Sadahiko Yamashita

    Inventor： Hiroshi Onishi ,  Sadahiko Yamashita

    IPC: H03B1/00 ,  H03B5/18 ,  H03D7/14 ,  H03D7/16 ,  H03D9/06 ,  H03D7/02 ,  H04B1/26 ,  H04N5/44

    CPC classification number: H03D7/161 ,  H03D9/0633 ,  H03B2201/0208 ,  H03B2201/0225 ,  H03B5/1823 ,  H03D2200/0017 ,  H03D2200/0027 ,  H03D7/1408

    Abstract: In a double superheterodyne tuner for receiving TV channel signals, a frequency in a range defined between 2520 and 2700 MHz is selected as the first intermediate frequency, while the first intermediate frequency is obtained by subtracting a desired channel frequency from a first local oscillator frequency. The tuner comprises first and second mixing circuits respectively used for effecting frequency conversion, where each of these mixing circuits has parallel coupled lines so that each mixing circuit operates as a balance-to-unbalance transformer. The second mixing circuit further comprises a short-circuit line placed between the parallel coupled lines. The tuner also comprises a band pass filter having a band width less than 5 MHz, which selectively transmits the first intermediate frequency signal from the first mixing circuit.

    Abstract translation: 在用于接收TV信道信号的双重超外差调谐器中，选择在2520和2700MHz之间的范围内的频率作为第一中频，而通过从第一本机振荡器频率减去所需信道频率获得第一中频。 调谐器包括分别用于实现频率转换的第一和第二混频电路，其中这些混频电路中的每一个具有并联耦合线，使得每个混频电路作为平衡不平衡变压器工作。 第二混合电路还包括放置在并联耦合线之间的短路线。 调谐器还包括带宽小于5MHz的带通滤波器，其选择性地传输来自第一混频电路的第一中频信号。

    Microwave oscillator having at least one adjustment pin
    17.
    发明授权
    Microwave oscillator having at least one adjustment pin 失效
    微波振荡器具有至少一个调整引脚

    公开(公告)号：US6005450A

    公开(公告)日：1999-12-21

    申请号：US29093

    申请日：1998-02-18

    Applicant: Ewald Schmidt ,  Bernhard Lucas

    Inventor： Ewald Schmidt ,  Bernhard Lucas

    IPC: H03B1/00 ,  H03B9/14 ,  H03B7/14

    CPC classification number: H03B9/14 ,  H03B2201/0225

    Abstract: A microwave oscillator includes a waveguide that is short-circuited on one side and a diode arranged therein, which receives its supply voltage by way of a coupling pin passed through a waveguide wall. At least one adjustment pin, extends into the waveguide and is adjustable in its penetration depth, for tuning the oscillator frequency. Because the adjustment pin is aligned at an acute angle to the coupling pin, the oscillator frequency can be tuned very precisely.

    Abstract translation: PCT No.PCT / DE97 / 00036 Sec。 371日期1998年2月18日 102（e）1998年2月18日PCT 1997年1月13日PCT PCT。 公开号WO98 / 00904 日期1998年1月8日微波振荡器包括在一侧短路并布置在其中的二极管的波导，其通过穿过波导壁的耦合引脚接收其电源电压。 至少一个调节销延伸到波导中，并且可调节其穿透深度，用于调谐振荡器频率。 由于调节引脚与耦合引脚成锐角对准，所以可以非常精确地调节振荡器频率。

    High-frequency voltage controlled oscillator
    19.
    发明授权
    High-frequency voltage controlled oscillator 失效
    高频压控振荡器

    公开(公告)号：US5982244A

    公开(公告)日：1999-11-09

    申请号：US176287

    申请日：1993-12-30

    Applicant: Hirotaka Fujisaki

    Inventor： Hirotaka Fujisaki

    IPC: H01P7/08 ,  H03B1/00 ,  H03B5/18

    CPC classification number: H01P7/082 ,  H03B5/1847 ,  H03B2200/004 ,  H03B2201/014 ,  H03B2201/0208 ,  H03B2201/0225

    Abstract: A voltage controlled oscillator provides a trimming stub (3) for adjusting a free-running frequency in parallel to a microstrip line resonator (4). This arrangement makes it possible to easily perform fine adjustment of a free-running frequency used in the voltage controlled oscillator capable of supplying 2 GHz or higher oscillating frequency.

    Abstract translation: 压控振荡器提供用于调节与微带线谐振器（4）并联的自由运行频率的微调短截线（3）。 这种布置使得可以容易地执行能够提供2GHz或更高的振荡频率的压控振荡器中使用的自由运行频率的微调。

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