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    Low power dual sampler utilizing step recovery diodes (SRDS)
    1.
    发明授权
    Low power dual sampler utilizing step recovery diodes (SRDS) 失效
    低功率双采样器利用步进恢复二极管（SRDS）

    公开(公告)号：US5708377A

    公开(公告)日：1998-01-13

    申请号：US606380

    申请日：1996-02-23

    Applicant: Donald A. Bradley

    Inventor： Donald A. Bradley

    IPC: H03D3/28 ,  H03D9/06 ,  H03K3/33 ,  G11C27/02

    CPC classification number: H03K3/33 ,  H03D9/0608 ,  H03D3/28

    Abstract: A low power dual sampler including two sampler switches with a step recovery diode (SRD) in each sampler switch. A local oscillator (LO) signal is provided through a power amplifier and transformer to baluns in the sampler switches without utilizing a power splitter, providing limited power loss to each balun. Each balun is configured to provide the LO signal to terminals of the SRD in a sampler switch without providing a termination to SRD impulses. Each sampler switch further includes series diodes connected across the terminals of each SRD switch with a junction of the series diodes connected to receive an RF signal, and the terminals of each SRD connected for providing an IF signal. To limit phase shift between SRD impulses, a temperature compensation circuit provides a DC offset voltage to each SRD. In one embodiment, each temperature compensation circuit includes an operational amplifier having a noninverting terminal coupled to a terminal of an SRD, an inverting terminal connected by a first resistor to ground, and an output connected by a second resistor to the inverting terminal and by a third resistor to the non-inverting terminal. To provide isolation between the sampler switches, a capacitor providing a high impedance to the LO signal and a low impedance to RF signals is connected at the interconnection of the sampler switches.

    Abstract translation: 一个低功率双采样器，包括两个采样器开关，每个采样器开关带有一个阶跃恢复二极管（SRD）。 通过功率放大器和变压器将本地振荡器（LO）信号提供给采样器开关中的巴伦，而不使用功率分配器，为每个平衡 - 不平衡变压器提供有限的功率损耗。 每个平衡 - 不平衡转换器被配置为向采样器开关中的SRD的端子提供LO信号，而不向SRD脉冲提供终止。 每个采样器开关还包括连接在每个SRD开关的端子之间的串联二极管，其中串联二极管的接点连接以接收RF信号，并且每个SRD的端子用于提供IF信号。 为了限制SRD脉冲之间的相移，温度补偿电路为每个SRD提供DC偏移电压。 在一个实施例中，每个温度补偿电路包括运算放大器，其具有耦合到SRD的端子的非反相端子，由第一电阻器接地连接的反相端子以及由第二电阻器连接到反相端子的输出端以及由 第三个电阻到同相端子。 为了在采样器开关之间提供隔离，在采样器开关的互连处连接向LO信号提供高阻抗的电容器和RF信号的低阻抗。

    Frequency discriminator using no inductive components
    3.
    发明授权
    Frequency discriminator using no inductive components 失效
    频率分辨器使用无电感元件

    公开(公告)号：US3614640A

    公开(公告)日：1971-10-19

    申请号：US3614640D

    申请日：1970-01-27

    Applicant: US NAVY

    Inventor： WOLF FREDERICK H

    IPC: H03D3/06 ,  H03D3/28

    CPC classification number: H03D3/06 ,  H03D3/28

    Abstract: A frequency discriminator which is mechanized of active filters and operational amplifiers. The signal under test is simultaneously applied to a plus detector channel and a minus detector cannel these channels having active filters of band-pass configuration, one with a center frequency below the discriminator frequency and one above. The channels also have operational amplifier type detectors and the outputs of the two channels are combined, post detection filtering being accomplished by a summing amplifier by virtue of a RC feedback applied around this amplifier.

    Circuit arrangement and method for matching a demodulator
    5.
    发明授权
    Circuit arrangement and method for matching a demodulator 有权
    用于匹配解调器的电路布置和方法

    公开(公告)号：US07683705B2

    公开(公告)日：2010-03-23

    申请号：US11754743

    申请日：2007-05-29

    Applicant: Helmut Koroschetz

    Inventor： Helmut Koroschetz

    IPC: H03D1/06 ,  H03D3/28 ,  H03D99/00

    CPC classification number: H03D1/06 ,  H03D3/001 ,  H03D2200/0033 ,  H03D2200/0096

    Abstract: A circuit arrangement for matching a demodulator to operating conditions comprises a demodulator designed to demodulate an analog input signal to a demodulated signal. The demodulator is also designed to be driven by a control signal. The circuit arrangement further comprises a sensor which is designed to provide a sensor status signal, and a control unit to whose input side the sensor status signal is applied and which is designed to provide the control signal for the demodulator during operation.

    Abstract translation: 用于将解调器与操作条件相匹配的电路装置包括设计成将模拟输入信号解调为解调信号的解调器。 解调器也被设计成由控制信号驱动。 该电路装置还包括被设计成提供传感器状态信号的传感器，以及一个控制单元，其输入端应用传感器状态信号，并被设计成在操作期间为解调器提供控制信号。

    FM demodulation circuit
    7.
    发明授权
    FM demodulation circuit 失效
    FM解调电路

    公开(公告)号：US5408195A

    公开(公告)日：1995-04-18

    申请号：US10001

    申请日：1993-01-27

    Applicant: Shinichi Miyazaki

    Inventor： Shinichi Miyazaki

    IPC: H03D3/02 ,  H03D3/24 ,  H03D3/00 ,  H03D3/28 ,  H03L1/02 ,  H03L7/00

    CPC classification number: H03D3/241 ,  H03D2200/0047 ,  H03D2200/005 ,  H03D2200/0052

    Abstract: An FM demodulation circuit comprises, an oscillation circuit (3) whose oscillation frequency is varied by a control signal, a phase comparator means (2) for comparing phases of signals between an FM signal to be demodulated and the output signal of the oscillation circuit (3) and generating a comparison signal corresponding to the phase difference, an additional voltage determining circuit (7) for determining an additional voltage based upon the comparison signal, and an adder (5) for adding the comparison signal and the additional voltage, and supplying the added result as the control voltage. The additional voltage may be a value which makes the comparison signal level at a center level of the operable range of the phase comparator (2).

    Abstract translation: FM解调电路包括其振荡频率由控制信号变化的振荡电路（3），相位比较装置（2），用于比较待解调的FM信号与振荡电路的输出信号之间的信号相位 3）并产生对应于相位差的比较信号，用于基于比较信号确定附加电压的附加电压确定电路（7）和用于将比较信号和附加电压相加的加法器（5） 添加结果作为控制电压。 附加电压可以是使比较信号电平处于相位比较器（2）的可操作范围的中心电平的值。

    Phaselocked-fm detector apparatus
    8.
    发明授权
    Phaselocked-fm detector apparatus 失效
    PHASELOCKED-FM检测器设备

    公开(公告)号：US3778728A

    公开(公告)日：1973-12-11

    申请号：US3778728D

    申请日：1972-04-11

    Applicant: EDMAC ASS INC

    Inventor： NUPP R

    IPC: H03B5/04 ,  H03B5/12 ,  H03D3/02 ,  H03D3/24 ,  H03D3/28 ,  H03L7/08

    CPC classification number: H03D3/241 ,  H03B5/1203 ,  H03B5/1228 ,  H03B5/1243 ,  H03B5/1296

    Abstract: A phaselock loop FM detector for detecting an incoming FM signal includes a voltage controlled oscillator (VCO) which produces an output signal and two control circuits, the first of which includes a varactor and causes the oscillator output signal to be at the center frequency of the incoming signal, and the second control circuit includes a second varactor and causes the oscillator output signal to lock on the modulation of the input signal.

    Frequency modulation discriminator having first branch with resonator and second branch providing voltage and temperature compensation
    9.
    发明授权
    Frequency modulation discriminator having first branch with resonator and second branch providing voltage and temperature compensation 失效
    具有谐振器的第一分支的频率调制解调器和提供电压和温度补偿的第二分支

    公开(公告)号：US3585513A

    公开(公告)日：1971-06-15

    申请号：US3585513D

    申请日：1969-05-02

    Applicant: MOTOROLA INC

    Inventor： LUCAS ALFRED R

    IPC: H03D3/34 ,  H03D3/26 ,  H03D3/28

    CPC classification number: H03D3/34

    Abstract: A discriminator for a frequency modulated receiver, having slope detector and reference portions, with each portion developing a signal from the input signal. The slope detector portion signal varies in accordance with the frequency and amplitude of the input signal, and varies with temperature. The reference portion signal varies in accordance with the amplitude of the input signal and also varies in accordance with temperature. Signals from the two portions are combined at the output to produce a resultant signal which varies in amplitude according to the frequency of the input signal and is substantially unaffected by temperature variations and changes in supply voltage.

    Oscillator, and receiving device and electronic device using the oscillator
    10.
    发明授权
    Oscillator, and receiving device and electronic device using the oscillator 失效
    振荡器，以及使用振荡器的接收设备和电子设备

    公开(公告)号：US08183915B2

    公开(公告)日：2012-05-22

    申请号：US13151777

    申请日：2011-06-02

    Applicant: Yasunobu Tsukio ,  Akihiko Namba ,  Hiroaki Ozeki

    Inventor： Yasunobu Tsukio ,  Akihiko Namba ,  Hiroaki Ozeki

    IPC: H03D3/28

    CPC classification number: H03L7/183 ,  H03L1/022

    Abstract: An oscillator unit is configured such that a frequency adjustment unit of a synthesizer used by a controller is smaller than a frequency variation tracking capability of a demodulator connected to an output side of a frequency converter. This structure successfully combines the temperature compensation control of an oscillator unit and the receiving process of a high-frequency receiving device. Accordingly, an oscillator unit with large temperature coefficient is applicable to high-frequency receiving devices.

    Abstract translation: 振荡器单元被配置为使得控制器使用的合成器的频率调节单元小于连接到变频器的输出侧的解调器的频率变化跟踪能力。 该结构成功地组合了振荡器单元的温度补偿控制和高频接收装置的接收处理。 因此，具有高温度系数的振荡器单元适用于高频接收装置。

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