公开(公告)号：US12047049B2

公开(公告)日：2024-07-23

申请号：US18116047

申请日：2023-03-01

Applicant: DYNASPOT CORP.

Inventor： Marvin L. Sassler ,  Alan T. Sassler

IPC: H03H17/02 ,  H03D3/26 ,  H03H7/06 ,  H04B1/16

CPC classification number: H03H17/0254 ,  H03D3/26 ,  H03H7/06 ,  H03H17/0219 ,  H03H17/0267 ,  H04B1/1638 ,  H03D2200/0054

Abstract: Trans-filter/Detectors are extremely sensitive circuits that recover exponentially modulated signals buried in noise. They can be used wherever Matched Filter/Coherent Detectors are used and operate at negative input signal-to-noise ratios to recover RADAR, SONAR, communications, or data signals, as well as reduce phase noise of precision oscillators. Input signal and noise is split into two paths where complementary derivatives are extracted. Outputs of the two paths are equal in amplitude and 180 degrees relative to each other at the band center frequency. The outputs are summed, causing stationary in-band noise to be reduced by cancellation while exponentially modulated signals are undiminished. Trans-filters are Linear Time Invariant circuits, have no noise x noise threshold and can be cascaded, increasing output signal-to-noise ratio prior to detection. Trans-filters are most sensitive to all types of digital modulation, producing easily detected polarized pulses synchronous with data transitions. Trans-filters do not require coherent conversion oscillators and complex synchronizing circuits.

公开(公告)号：US11743083B2

公开(公告)日：2023-08-29

申请号：US16929916

申请日：2020-07-15

Applicant: RAYTHEON COMPANY

Inventor： Gary M. Graceffo ,  Andrew Kowalevicz ,  Benjamin P. Dolgin

IPC: H04L27/22 ,  H03H7/00 ,  H01P7/06 ,  H03D3/00 ,  H03D3/26 ,  H04L27/233

CPC classification number: H04L27/22 ,  H01P7/06 ,  H03D3/00 ,  H03D3/006 ,  H03D3/26 ,  H03H7/00 ,  H04L27/2334

Abstract: Disclosed is a microwave cavity resonator used as a phase change (phase modulation) to intensity change (intensity or amplitude modulation) converter. Certain aspects and embodiments include resonant circuits, such as a resistor, inductor and capacitor (RLC) circuit. Certain aspects and embodiments convert changes in phase to changes in output voltage to perform analog demodulation of a phase modulated microwave carrier. Certain aspects and embodiments use resonance when the reactive components of the circuit (capacitive and inductive components) are equal in magnitude and 180 degrees out of phase with one another, thereby cancelling out the reactance component of the circuit's impedance.

公开(公告)号：US11621701B2

公开(公告)日：2023-04-04

申请号：US17333931

申请日：2021-05-28

Applicant: DYNASPOT CORP.

Inventor： Marvin L. Sassler ,  Alan T. Sassler

IPC: H03H17/02 ,  H03H7/06 ,  H03D3/26 ,  H04B1/16

Abstract: Trans-filter/Detectors are extremely sensitive circuits that recover exponentially modulated signals buried in noise. They can be used wherever Matched Filter/Coherent Detectors are used and operate at negative input signal-to-noise ratios to recover RADAR, SONAR, communications, or data signals, as well as reduce phase noise of precision oscillators. Input signal and noise is split into two paths where complementary derivatives are extracted. Outputs of the two paths are equal in amplitude and 180 degrees relative to each other at the band center frequency. The outputs are summed, causing stationary in-band noise to be reduced by cancellation while exponentially modulated signals are undiminished. Trans-filters are Linear Time Invariant circuits, have no noise x noise threshold and can be cascaded, increasing output signal-to-noise ratio prior to detection. Trans-filters are most sensitive to all types of digital modulation, producing easily detected polarized pulses synchronous with data transitions. Trans-filters do not require coherent conversion oscillators and complex synchronizing circuits.

公开(公告)号：US5847620A

公开(公告)日：1998-12-08

申请号：US789815

申请日：1997-01-28

Applicant: Thomas T. Y. Wong ,  Thomas D. Nagode ,  Sabah Khesbak

Inventor： Thomas T. Y. Wong ,  Thomas D. Nagode ,  Sabah Khesbak

IPC: H03D1/10 ,  H03D3/26 ,  H03D9/04 ,  H03L7/02

CPC classification number: H03D9/04 ,  H03D1/10 ,  H03D2200/0003 ,  H03D3/26

Abstract: A dielectric resonator frequency discriminator comprising a microstrip, a single mode dielectric resonator coupled to the microstrip, at least one detector for detecting an RF signal coupled to the microstrip and an RF input for introducing an RF signal coupled to the microstrip.

Abstract translation: 介质谐振器频率鉴别器包括微带，耦合到微带的单模介质谐振器，用于检测耦合到微带的RF信号的至少一个检测器和用于引入耦合到微带的RF信号的RF输入。

公开(公告)号：US4814718A

公开(公告)日：1989-03-21

申请号：US82616

申请日：1987-08-07

Applicant: Lazare Argintaru ,  Denis Hebrard

Inventor： Lazare Argintaru ,  Denis Hebrard

IPC: H03D3/26 ,  H01P7/10 ,  H03D9/04 ,  H03D3/00

CPC classification number: H03D9/04 ,  H01P7/10

Abstract: A microwave frequency discriminator, i.e. an electronic device for directly transforming frequency modulation on a microwave carrier into a demodulated lower frequency signal. The discriminator is similar to a Travis discriminator and includes an inlet microstrip line, two resonant circuits (R.sub.1, R.sub.2) constituted by dielectric resonators and coupled to said inlet microstrip line to receive the modulated microwave signal, two outlet microstrip lines coupling each resonator to a respective microwave detector circuit, said detector circuits including loads (r.sub.1, r.sub.2) in series-opposition in the manner of a Travis discriminator. The microwave frequency discriminator can be used in a demodulator and/or receiver for frequency modulated microwaves.

Abstract translation: 一种微波鉴频器，即用于将微波载波上的频率调制直接变换为解调的较低频率信号的电子设备。 鉴别器与Travis识别器相似，包括一个入口微带线，由介质谐振器构成的两个谐振电路（R1，R2），耦合到所述入口微带线以接收经调制的微波信号，两个出口微带线将每个谐振器耦合到 相应的微波检测器电路，所述检测器电路包括以Travis鉴别器的方式串联对置的负载（r1，r2）。 微波鉴频器可用于用于调频微波的解调器和/或接收器。

公开(公告)号：US4342000A

公开(公告)日：1982-07-27

申请号：US135149

申请日：1980-03-28

Applicant: Minoru Ogita

Inventor： Minoru Ogita

IPC: H03D3/10 ,  H03D3/22 ,  H03D3/14 ,  H03D3/26

CPC classification number: H03D3/22 ,  H03D3/10 ,  H03D2200/0009 ,  H03D2200/0049 ,  H03D2200/0082 ,  H03D2200/0088

Abstract: In an FM detecting circuit of either the ratio detecting circuit type or the quadrature detecting circuit type arranged to have an LC resonance circuit and to detect the amount of deviation of an FM input signal relative to the resonance frequency by utilizing the resonance characteristic of the LC resonance circuit in the vicinity of the resonance frequency to thereby perform FM detection, a semiconductor element is connected to the LC resonance circuit to expand the rectilinear region of the resonance characteristic and to reduce detecting distortions.

Abstract translation: 在布置成具有LC谐振电路的比率检测电路类型或正交检测电路类型的FM检测电路中，并且通过利用LC的谐振特性来检测FM输入信号相对于谐振频率的偏差量 在谐振频率附近的谐振电路，从而进行FM检测，半导体元件连接到LC谐振电路，以扩大谐振特性的直线区域，并减少检测失真。

公开(公告)号：US4150338A

公开(公告)日：1979-04-17

申请号：US897033

申请日：1978-04-17

Applicant: Merle V. Hoover

Inventor： Merle V. Hoover

IPC: H03D3/08 ,  H03D3/26

CPC classification number: H03D3/08 ,  H03D3/26

Abstract: An input signal comprising a carrier wave whose frequency may vary is applied to two complementary conductivity type transistors. Two resonant circuits, one tuned to a frequency slightly higher than and the other tuned to a frequency slightly lower than that of the nominal center frequency of the carrier wave are coupled between the respective drain electrodes of these transistors and a circuit node. The voltages developed across these resonant circuits are detected and the detection components subtracted from one another to obtain the circuit output signal.

Abstract translation: 包括其频率可能变化的载波的输入信号被施加到两个互补导电型晶体管。 两个谐振电路被调谐到稍高于另一个被调谐到比载波的标称中心频率稍低的频率的频率上，耦合在这些晶体管的相应漏电极和电路节点之间。 检测在这些谐振电路之间产生的电压，并且将检测部件相互减去以获得电路输出信号。

公开(公告)号：US4079330A

公开(公告)日：1978-03-14

申请号：US746336

申请日：1976-12-01

Applicant: Yukinobu Ishigaki ,  Kohei Sasamura ,  Yasuo Itoh ,  Teruo Muraoka

Inventor： Yukinobu Ishigaki ,  Kohei Sasamura ,  Yasuo Itoh ,  Teruo Muraoka

IPC: G11B3/00 ,  H03D3/00 ,  H03D3/02 ,  H03D3/06 ,  H03D3/24 ,  H03D3/26 ,  H04H20/89 ,  H04S3/00 ,  H03D3/22

CPC classification number: H04H20/88 ,  H03D3/005 ,  H03D3/02 ,  H03D3/06 ,  H03D3/24 ,  H03D3/26 ,  H04H20/89

Abstract: The inventive system demodulates angle-modulated signals. A tracking band-pass filter responds to an input angle-modulated wave signal. The tracking filter has a pass band with a center frequency controlled by a control signal. A first amplitude limiter limits the amplitude of the input angle-modulated wave signal. A differentiation circuit establishes a 90.degree. phase difference between a signal passing through the tracking band-pass filter and a signal passing through the amplitude limiter. A phase comparator responds to an input with the two signals with a 90.degree. phase difference therebetween and produces an output error signal in accordance with this phase difference. This output error signal is supplied as the control signal to the tracking band-pass filter. This output error signal is also passed through a low pass filter to produce the demodulated signal.

Abstract translation: 本发明的系统解调角度调制信号。 跟踪带通滤波器响应输入角度调制波信号。 跟踪滤波器具有通过控制信号控制的中心频率的通带。 第一幅度限制器限制输入角度调制波信号的幅度。 差分电路在通过跟踪带通滤波器的信号和通过幅度限制器的信号之间建立90°的相位差。 相位比较器响应输入，其中两个信号之间的相位差为90°，并根据该相位差产生输出误差信号。 该输出误差信号作为控制信号提供给跟踪带通滤波器。 该输出误差信号也通过低通滤波器以产生解调信号。

公开(公告)号：US3997797A

公开(公告)日：1976-12-14

申请号：US645873

申请日：1975-12-31

Applicant: Hiroshi Sahara ,  Yutaka Tanaka ,  Toshinobu Isobe

Inventor： Hiroshi Sahara ,  Yutaka Tanaka ,  Toshinobu Isobe

IPC: H03D3/08 ,  H03D3/10 ,  H04N9/64 ,  H04N11/18 ,  H03D3/26

CPC classification number: H03D3/08 ,  H04N11/186 ,  H04N5/44

Abstract: A frequency discriminating circuit having a double tuned circuit with a transformer, which has a first and second resonant circuits. The first resonant circuit is composed of a capacitor, a primary winding of the transformer and a first variable inductance element and the second resonant circuit is composed of a capacitor, a secondary winding of the transformer and second and third variable inductance elements, wherein the quality factor Q of the second resonant circuit is much larger than that Q of the first resonant circuit. The center frequency of the frequency-response characteristic (so-called S characteristic) of the discriminating circuit can be adjusted by adjusting the second and third variable inductance elements and the linearity of the frequency response characteristic of the discriminating circuit can be adjusted by adjusting the first variable inductance element.

Abstract translation: 一种具有带有变压器的双调谐电路的频率判别电路，其具有第一和第二谐振电路。 第一谐振电路由电容器，变压器的初级绕组和第一可变电感元件组成，第二谐振电路由电容器，变压器的次级绕组和第二和第三可变电感元件组成，其中质量 第二谐振电路的因子Q比第一谐振电路的Q大得多。 鉴别电路的频率响应特性（所谓的S特性）的中心频率可以通过调节第二和第三可变电感元件来调节，并且可以通过调节判别电路的频率响应特性的线性来调节 第一可变电感元件。

公开(公告)号：US3925733A

公开(公告)日：1975-12-09

申请号：US47304974

申请日：1974-05-24

Applicant: US NAVY

Inventor： MOORE WAYNE E

IPC: H03K5/1532 ,  H03K11/00 ,  H03K5/20 ,  H03D3/26

CPC classification number: H03K11/00 ,  H03K5/1532

Abstract: An improved electronic circuit and technique for providing a trigger pulse synchronized with the maximum pulse density in a random pulse train. A frequency modulated pulse train having uniform amplitude pulses is delivered to an RC circuit which provides an output waveform having maximum amplitude at the highest input frequency or maximum pulse density. The waveform is passed through a smoothing filter and amplifier to more particularly define the waveform peak, and then to a peak detector where the point of maximum amplitude is sensed using a transistor sensing circuit. A pulse output from the transistor sensing circuit is electronically modified to produce an impulse trigger spike that corresponds to the point of maximum pulse density over a wide range of input conditions.

Abstract translation: 一种用于在随机脉冲串中提供与最大脉冲密度同步的触发脉冲的改进的电子电路和技术。 具有均匀幅度脉冲的调频脉冲串被传送到RC电路，RC电路提供在最高输入频率或最大脉冲密度下具有最大振幅的输出波形。 波形通过平滑滤波器和放大器以更具体地定义波形峰值，然后通过晶体管感测电路检测最大幅度点。 从晶体管感测电路输出的脉冲被电子修改以产生在宽范围的输入条件下对应于最大脉冲密度点的脉冲触发尖峰。