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12 条记录 (耗时 0.01 秒)

    Frequency conversion circuits
    2.
    发明授权
    Frequency conversion circuits 失效
    变频电路

    公开(公告)号：US4709410A

    公开(公告)日：1987-11-24

    申请号：US723377

    申请日：1985-04-15

    申请人： Yusuke Tajima ,  Robert A. Pucel

    发明人： Yusuke Tajima ,  Robert A. Pucel

    IPC分类号： H03D7/12 ,  H03D9/06 ,  H04B1/28

    CPC分类号： H03D9/0675 ,  H03D2200/0076 ,  H03D7/125

    摘要： A radio frequency circuit having at least one output terminal includes a plurality of non-linear elements, each having an output electrode. Means are provided for feeding at least one input signal to each one of the non-linear elements. The feeding means includes an electrical pathlength including at least one two port phase shifting element fed by at least the input signal, for providing a plurality of signal portions, each one fed to a corresponding one of the plurality of non-linear elements. These signal portions have a successively increasing phase shift related to the electrical pathlength of the two port phase shifting elements. The output electrodes of each non-linear element are interconnected by an input coupling means including at least one, different, two port phase shifting element, for successively electrically interconnecting the output electrode of each non-linear element. With such an arrangement, by providing two port phase shift elements in the input and output coupling means, proper phasing characteristics may be provided to such circuits without the necessity of using couplers or baluns which are generally difficult to fabricate, particularly, as broadband monolithic microwave integrated circuits.

    摘要翻译： 具有至少一个输出端子的射频电路包括多个非线性元件，每个都具有输出电极。 提供了用于将至少一个输入信号馈送到每个非线性元件的装置。 馈送装置包括电通路长度，其包括由至少一个输入信号馈送的至少一个两端口移相元件，用于提供多个信号部分，每个信号部分被馈送到多个非线性元件中对应的一个。 这些信号部分具有与两个端口相移元件的电通路长度相关的相继增加的相移。 每个非线性元件的输出电极通过包括至少一个不同的两个端口移相元件的输入耦合装置相互连接，用于连续地互连每个非线性元件的输出电极。 通过这样的布置，通过在输入和输出耦合装置中提供两个端口相移元件，可以向这种电路提供适当的相位特性，而不需要使用通常难以制造的耦合器或平衡 - 不平衡变换器，特别是作为宽带单片微波 集成电路。

    Microwave mixing circuit and a down converter comprising it
    4.
    发明授权
    Microwave mixing circuit and a down converter comprising it 失效
    微波混合电路和包括它的降压转换器

    公开(公告)号：US5754951A

    公开(公告)日：1998-05-19

    申请号：US520487

    申请日：1995-08-29

    申请人： Yukiro Kashima ,  Akira Kinoshita

    发明人： Yukiro Kashima ,  Akira Kinoshita

    IPC分类号： H03D9/06 ,  H04B1/26

    CPC分类号： H03D9/0608 ,  H03D2200/0005 ,  H03D2200/0076

    摘要： A microwave mixing circuit of a small size for selecting a signal to be received out of plural microwave signal inputs, and converting it to an intermediate frequency signal, and a down converter comprising it are provided. A microwave input signal within a band of 12 GHz applied to one microwave signal input unit is guided through a bias terminal from a comparator into a mixer diode to which a bias current is supplied, and is converted in frequency by the mixer diode. A microwave input signal applied to other microwave signal input unit is guided through the bias terminal from the comparator into a mixer diode to which bias current is not supplied, and is hence not converted in frequency by the mixer diode. As a result, only an intermediate frequency signal of 1 GHz band corresponding to the former microwave signal appears at the intermediate frequency signal output terminal.

    摘要翻译： 提供一种小尺寸的微波混合电路，用于选择从多个微波信号输入中接收的信号，并将其转换为中频信号，以及包括该微波混合电路的降频转换器。 施加到一个微波信号输入单元的12GHz频带内的微波输入信号通过偏置端从比较器引导到供给偏置电流的混频二极管中，并通过混频二极管转换频率。 施加到其他微波信号输入单元的微波输入信号通过偏置端子从比较器引导到未被供给偏置电流的混频二极管，因此不被混频二极管转换。 结果，只有与前一个微波信号对应的1GHz频带的中频信号出现在中频信号输出端。

    Monolithic distributed mixer
    5.
    发明授权
    Monolithic distributed mixer 失效
    单片分布式混频器

    公开(公告)号：US4751744A

    公开(公告)日：1988-06-14

    申请号：US737770

    申请日：1985-05-28

    申请人： Anthony M. Pavio, Jr.

    发明人： Anthony M. Pavio, Jr.

    IPC分类号： H03D7/00 ,  H03D7/12 ,  H03D9/06 ,  H04B1/28 ,  H04B1/26

    CPC分类号： H03D9/0675 ,  H03D2200/0007 ,  H03D2200/0076 ,  H03D7/125

    摘要： A monolithic distributed mixer includes a plurality of dual gate field effect transistors (FETs) and first and second corresponding pluralities of T shaped constant K-filters connected respectively to first and second gates of the dual gate FETs for delaying in time the LO and RF voltages applied thereto whereby the phase shift is the same at each filter and the phase difference between the LO and RF at each FET is equal. Thus, the IF energy developed at each drain is in phase. The plurality of dual gate FETs have their drains commonly connected for summing the IF outputs thereof to provide a flat response throughout the bandwidth which is limited only by the cutoff voltages of the FETs or first and second pluralities of K-filters which act as low pass filters.

    摘要翻译： 单片分布式混频器包括多个双栅极场效应晶体管（FET）以及分别连接到双栅极FET的第一和第二栅极的第一和第二对应多个T形常数K滤波器，用于在时间上延迟LO和RF电压 每个滤波器上的相移相同，并且每个FET处的LO和RF之间的相位差相等。 因此，在每个漏极处产生的IF能量是同相的。 多个双栅极FET通常连接其漏极，用于对其IF输出求和，以提供整个带宽中的平坦响应，该带宽仅受限于FET或第一和第二多个K滤波器的截止电压的限制，这些K滤波器作为低通 过滤器。

    Monolithic double balanced mixer with high third order intercept point employing an active distributed balun
    7.
    发明授权
    Monolithic double balanced mixer with high third order intercept point employing an active distributed balun 失效
    采用主动分布式平衡 - 不平衡转换器的高三阶截点的单片双平衡混频器

    公开(公告)号：US5060298A

    公开(公告)日：1991-10-22

    申请号：US282542

    申请日：1988-12-09

    申请人： Raymond M. Waugh ,  Mahesh Kumar

    发明人： Raymond M. Waugh ,  Mahesh Kumar

    IPC分类号： H03D7/12 ,  H03D7/14 ,  H03F3/60 ,  H04B1/26

    CPC分类号： H04B1/26 ,  H03D7/1408 ,  H03D7/1441 ,  H03D7/1458 ,  H03D7/1466 ,  H03F3/607 ,  H03D2200/0023 ,  H03D2200/0076 ,  H03D2200/0088 ,  H03D2200/009 ,  H03D7/125 ,  H03D7/14

    摘要： A monolithic double balanced mixer with a high third order intercept point employs a local oscillator signal which is applied to the input port of a first active distributed element balun. The balun has two outputs which are applied via amplifiers to respective inputs of a double balanced resistive FET quad mixer. The double balanced resistive FET quad mixer employs four MESFETs arranged in a ring configuration. Two additional inputs to the quad mixer are obtained from a second balun which is also of an active distributed element configuration and receives at the input the RF signal. The quad mixer operates to produce mixing of the LO and RF signals at the outputs thereof. The outputs of the quad mixer are applied to a combiner which operates to combine the outputs of the quad mixer to produce at the combiner output an IF signal. The combiner can be a common gate combiner configuration with active loads or a distributed configuration employing FET devices in a distributed transmission line type of circuit.

    摘要翻译： 具有高三阶截取点的单片双平衡混频器采用施加到第一有源分布元件平衡 - 不平衡变换器的输入端口的本地振荡器信号。 平衡 - 不平衡转换器有两个输出，通过放大器施加到双平衡电阻FET四通道混频器的相应输入。 双平衡电阻FET四通道混频器采用四个环形配置的MESFET。 从第二平衡 - 不平衡变换器获得四个混频器的两个附加输入，该平衡不平衡变换器也是有源分布元件配置，并在输入端接收RF信号。 四通道混频器的作用是在其输出端产生LO和RF信号的混频。 四通道混频器的输出被施加到组合器，该组合器操作以组合四通道混频器的输出，以在组合器输出端产生IF信号。 组合器可以是具有有源负载的公共栅极组合器配置或在分布式传输线路类型中使用FET器件的分布式配置。

    Active balun
    8.
    发明授权
    Active balun 失效
    主动平衡 - 不平衡变压器

    公开(公告)号：US4994755A

    公开(公告)日：1991-02-19

    申请号：US355739

    申请日：1989-05-22

    申请人： Ward S. Titus ,  Manfred J. Schindler

    发明人： Ward S. Titus ,  Manfred J. Schindler

    IPC分类号： H03D7/12 ,  H03D7/14 ,  H03D9/06 ,  H03F3/60 ,  H03H11/32

    CPC分类号： H03D9/0675 ,  H03F3/607 ,  H03H11/32 ,  H03D2200/0023 ,  H03D2200/0076 ,  H03D7/125 ,  H03D7/14 ,  H03F2200/198

    摘要： A double balun circuit is provided by connecting two pairs of circut types. The first circuit, a distributed divider circuit, includes first and second pluralities of field effect transistors, a common input transmission line, and a first and second output transmission lines. The common input transmission line is disposed to successively couple the input electrodes of each transistor of both the first and second pluralities of transistors. The output lines are disposed to successively couple the output electrodes of the respective ones of the plurities of transistors. Each output transmission line is coupled to one of the pair of output terminals of the circuit. A pair of inverter circuits comprised of an input transmission line, a plurality of field effect transistors, and an output transmission line having input and output electrodes successively coupled by respective input and output transmission line networks are coupled between the output electrodes of each one of a pair of divider circuits, such that an input electrode at the input side of the inverter circuit is coupled to one of the outputs of the divider circuit, whereas an input terminal coupled to the output side of the inverter is coupled to the output of the second one of the divider circuits. This particular arrangement provides an active double balun which may be used in a double baluns mixer.

    摘要翻译： 通过连接两对环路类型提供双平衡 - 不平衡转换电路。 第一电路，分布式分配电路，包括第一和第二多个场效应晶体管，公共输入传输线，以及第一和第二输出传输线。 公共输入传输线被设置为连续地耦合第一和第二多个晶体管的每个晶体管的输入电极。 输出线被设置成连续地耦合晶体管的各个杂质的输出电极。 每个输出传输线耦合到电路的一对输出端中的一个。 由输入传输线，多个场效应晶体管和具有通过相应的输入和输出传输线网络连续耦合的输入和输出电极的输出传输线组成的一对逆变器电路耦合在一个 一对分压器电路，使得反相器电路的输入侧的输入电极耦合到除法器电路的输出之一，而耦合到反相器的输出侧的输入端耦合到第二 一个分频电路。 这种特殊的布置提供了可以用于双重巴伦混合器中的主动双重平衡 - 不平衡变压器。

    High frequency system including a superconductive device and temperature controlling apparatus
    9.
    发明授权
    High frequency system including a superconductive device and temperature controlling apparatus 失效
    高频系统包括超导装置和温度控制装置

    公开(公告)号：US5757243A

    公开(公告)日：1998-05-26

    申请号：US649884

    申请日：1996-05-13

    申请人： Koichi Mizuno ,  Akira Enokihara ,  Hidetaka Higashino ,  Kentaro Setsune

    发明人： Koichi Mizuno ,  Akira Enokihara ,  Hidetaka Higashino ,  Kentaro Setsune

    IPC分类号： H03B15/00 ,  H03D9/06 ,  H04B3/18

    CPC分类号： H03B15/003 ,  H03D9/06 ,  H03B2200/0016 ,  H03B2200/0076 ,  H03D2200/0076 ,  H03D2200/0084

    摘要： An effective high frequency oscillator is made of a plurality of Josephson devices. A high frequency converter as a high frequency circuit is made of the high frequency oscillator, nonlinear superconductor devices, and transmission line. Josephson devices are connected in parallel to make a superconductor module. Then superconductive modules are connected in series for high frequency via a phase locking circuit such as a thin film type capacitor to make the high frequency oscillator. Consequently, the high frequency oscillator is used as a local oscillator for a frequency converter. The high frequency system comprises a high frequency package housing a high frequency circuit, a cooling unit including a low temperature stage in thermal contact with the high frequency package, and a shielding case for housing the high frequency circuit and the low temperature stage. The high frequency system of the present invention provides a small-sized and power-saving high frequency circuit having operational stability.

    摘要翻译： 有效的高频振荡器由多个Josephson器件制成。 作为高频电路的高频变频器由高频振荡器，非线性超导体器件和传输线构成。 约瑟夫森装置并联连接以制造超导体模块。 然后超导模块通过诸如薄膜型电容器之类的锁相电路串联连接成高频振荡器。 因此，高频振荡器用作变频器的本地振荡器。 高频系统包括容纳高频电路的高频封装，包括与高频封装热接触的低温级的冷却单元和用于容纳高频电路和低温级的屏蔽壳。 本发明的高频系统提供了具有操作稳定性的小型和省电的高频电路。