公开(公告)号：US5332983A

公开(公告)日：1994-07-26

申请号：US10073

申请日：1993-01-26

Applicant: Robert C. Peach

Inventor： Robert C. Peach

IPC: H03H9/02 ,  H03H9/64

CPC classification number: H03H9/6426 ,  H03H9/02818

Abstract: A filterbank using surface acoustic wave technology and having a plurality of filters. Each filter has an input transducer and an output transducer. The input transducers are connected in parallel to a single matching circuit. The output transducers each have a separate matching circuit. The transducers are formed by a thin film of aluminum pattern on a piezoelectric substrate. The input transducers all have the same structure and the output transducers all have the same structure, though that structure is different from the input transducers. The only difference between the transducers of each filter is the location of electrode breaks for each electrode. A weighting function of the transducers is scaled and biased to provide a constant impedance across the bandwidth of the filterbank and to equalize the output amplitudes and capacitances of the output transducers. This produces a continuous level response across the bandwidth of the filterbank. Previously, while a continuous level response was theoretically achievable, it cannot be achieved in practice.

Abstract translation: 一种使用声表面波技术并具有多个滤波器的滤波器组。 每个滤波器都有一个输入传感器和一个输出传感器。 输入传感器并联连接到单个匹配电路。 输出传感器各自具有单独的匹配电路。 换能器由压电基板上的铝图案薄膜形成。 输入传感器都具有相同的结构，输出传感器都具有相同的结构，尽管该结构与输入传感器不同。 每个滤波器的换能器之间的唯一区别是每个电极的电极断裂位置。 换能器的加权函数被缩放和偏置以在滤波器组的带宽上提供恒定的阻抗并且均衡输出变换器的输出幅度和电容。 这在滤波器组的带宽上产生连续的电平响应。 以前，虽然理论上可以实现持续的层次反应，但在实践中是不可能实现的。

公开(公告)号：US5200721A

公开(公告)日：1993-04-06

申请号：US794044

申请日：1991-11-19

Applicant: Raafat R. Mansour

Inventor： Raafat R. Mansour

IPC: H01P1/208 ,  H01P7/10

CPC classification number: H01P7/105 ,  H01P1/2086

Abstract: A dual-mode filter has a dielectric resonator in each cavity, with each resonator containing one or more apertures. The aperture or apertures are located to shift a resonance frequency of a spurious mode to a higher frequency range distance from a principal mode. The principal mode can be an HEH.sub.11 mode and the spurious mode can be an HEE.sub.11 mode or vice-versa. The dielectric resonators can be a solid block or two or more discs that are laminated to one another. Previous dual-mode filters cannot attain the results required for current satellite systems.

Abstract translation: 双模式滤波器在每个空腔中具有介质谐振器，每个谐振器包含一个或多个孔。 孔或孔被定位成将寄生模式的共振频率移动到与主模式更高的频率范围距离。 主模式可以是HEH11模式，寄生模式可以是HEE11模式，反之亦然。 介质谐振器可以是彼此层压的固体块或两个或更多个盘。 以前的双模式滤波器无法达到当前卫星系统所需的结果。

公开(公告)号：US5063364A

公开(公告)日：1991-11-05

申请号：US517686

申请日：1990-05-02

Applicant: Paul Y. Tsoi

Inventor： Paul Y. Tsoi

IPC: H01P1/12

CPC classification number: H01P1/125 ,  H01H51/2263

Abstract: A microwave C-, T- or S-switch has an actuator of circular shape that is rotated by a suitable motor. Each conductor path of the switch contains a connector having two positions, one position connecting the conductor path and a second position interrupting the conductor path. The conductor paths and connectors are enclosed within a housing and a pin is mounted on each connector and extends outside of the housing through a suitable opening. Each pin is spring-mounted so that the conductor path is connected when the pin is depressed and interrupted when the pin is released. The actuator is shaped and mounted to override the pins, the actuator containing one or more ridges and one or more indentations. When a ridge overrides a pin, the pin is depressed and the conductor path is connected. When an indentation overrides a pin, the pin is released and the conductor path is interrupted. By properly arranging the size and location of ridges and indentations on the actuator, the conductor paths can be connected or interrupted simply by rotating the actuator through two or more positions. The switch achieves mass and volume savings over previous switches. Also, the switch is simple and relatively inexpensive to manufacture.

公开(公告)号：US4818956A

公开(公告)日：1989-04-04

申请号：US83567

申请日：1987-08-03

Applicant: Antun Stajcer

Inventor： Antun Stajcer

IPC: H03B1/00 ,  H03B1/04 ,  H03B5/18 ,  H03B5/38

CPC classification number: H03B5/1876 ,  H03B2201/017 ,  H03B2202/02 ,  H03B5/1852

Abstract: A dielectrically stabilized planar GaAs FET oscillator has a single gate transistor with a gate terminal and a drain terminal. A cylindrically shaped dielectric resonator is mounted on a ceramic support. The dielectric resonator resonates in a TE.sub.01 mode and is located on the gate line of the transistor a predeterminated distance from the gate terminal. The transistor is biased so that the dielectric resonator alone can stabilize the power produced by the transistor. Stabilized output power is obtained from both the drain terminal and the gate terminal. With previous oscillators having a single gate transistor, output power could only be obtained from one terminal.

Abstract translation: 介质稳定的平面GaAs FET振荡器具有单栅极晶体管，其具有栅极端子和漏极端子。 圆柱形介质谐振器安装在陶瓷支架上。 介质谐振器以TE01模式谐振，并且位于与栅极端子预定距离的晶体管的栅极线上。 晶体管被偏压，使得介质谐振器单独可以稳定由晶体管产生的功率。 从漏极端子和栅极端子都获得稳定的输出功率。 对于具有单个栅极晶体管的先前振荡器，只能从一个端子获得输出功率。

公开(公告)号：US4815075A

公开(公告)日：1989-03-21

申请号：US21908

申请日：1987-03-04

Applicant: Richard J. Cameron

Inventor： Richard J. Cameron

IPC: H01P1/213 ,  H04J1/00 ,  H04J1/12 ,  H04J1/08

CPC classification number: H04J1/12

Abstract: This invention relates to a modular contiguous channel multiplexer having one or more modules that produce an asymmetric filter function that is combined with responses from other modules to produce an overall symmetrical response. The multiplexer can have channels arranged in any order of relative frequencies and one or more channels can be added or removed from the multiplexer without disturbing the operation of the existing or remaining channels. A method of constructing a multiplexer involves choosing the most downstream channel first, then choosing sequentially the channel immediately upstream from the channel last chosen and choosing filters of each channel to meet certain criteria. The filters of each channel are identical to one another but are not necessarily identical to filters in adjacent channels.

Abstract translation: 本发明涉及具有一个或多个模块的模块化连续信道多路复用器，其产生非对称滤波器功能，其与来自其它模块的响应相结合以产生整体对称响应。 多路复用器可以具有以相对频率的任何顺序布置的通道，并且可以从多路复用器添加或移除一个或多个通道，而不会干扰现有或剩余通道的操作。 构建多路复用器的方法包括首先选择最下游信道，然后从上一次选择的信道的上游依次选择信道，并选择每个信道的滤波器以满足某些标准。 每个通道的滤波器彼此相同，但不一定与相邻通道中的滤波器相同。

公开(公告)号：US4675630A

公开(公告)日：1987-06-23

申请号：US804078

申请日：1985-12-03

Applicant: Wai-Cheung Tang ,  David Siu ,  Bruce C. Beggs ,  Joseph Sferrazza

Inventor： Wai-Cheung Tang ,  David Siu ,  Bruce C. Beggs ,  Joseph Sferrazza

IPC: H01P1/208 ,  H01P7/06 ,  H01P7/10

CPC classification number: H01P1/2086

Abstract: A triple mode dielectric loaded bandpass filter has at least one cavity resonating in three independent orthogonal modes. A triple mode cavity can be mounted adjacent to either single, dual or triple mode cavities. Inter-cavity coupling is achieved through the iris having two separate apertures that together form a T-shape. The cavities can be planar mounted. The filter is designed for use in the satellite communication industry and results in substantial savings in weight and size when compared to previous filters.

Abstract translation: 三模介质负载带通滤波器具有至少一个在三个独立正交模式中共振的腔。 可以在单模，双模或三模腔附近安装三重模腔。 通过具有一起形成T形的两个分开的孔的虹膜实现腔间耦合。 空腔可以是平面安装的。 过滤器设计用于卫星通信行业，与以前的过滤器相比，可以大大节省重量和尺寸。

公开(公告)号：US4652843A

公开(公告)日：1987-03-24

申请号：US667823

申请日：1984-11-02

Applicant: Wai-Cheung Tang ,  David Siu ,  Bruce C. Beggs ,  Joseph Sferrazza

Inventor： Wai-Cheung Tang ,  David Siu ,  Bruce C. Beggs ,  Joseph Sferrazza

IPC: H01P1/208 ,  H01P1/209

CPC classification number: H01P1/2086

Abstract: A bandpass filter has a plurality of cascade cavities that operate in a dual-mode and are mounted in a planar relationship to one another. Each cavity contains a dielectric resonator and resonates at its resonant frequency in two HE.sub.11.delta. modes. An iris is located between adjacent cavities and contains an aperture that can independently control inter-cavity coupling. The dielectric resonator is cylindrical in shape and an adjustable metallic plunger is located in a wall of each cavity so that the cavity can be tuned over a relatively broad range. The filter has good mechanical and thermal stability as well as being extremely flexible in the arrangement of cavities.

Abstract translation: 带通滤波器具有多个级联空腔，其以双模式操作并且彼此以平面关系安装。 每个空腔包含一个介质谐振器，并以两个HE11增量模式谐振频率谐振。 虹膜位于相邻的空腔之间，并且包含可以独立地控制腔间耦合的孔。 介质谐振器的形状为圆柱形，并且可调节的金属柱塞位于每个空腔的壁中，使得空腔可以在相对宽的范围内调谐。 过滤器具有良好的机械和热稳定性，并且在空腔布置方面具有极其灵活性。

公开(公告)号：US4630009A

公开(公告)日：1986-12-16

申请号：US573462

申请日：1984-01-24

Applicant: Wai-Cheung Tang

Inventor： Wai-Cheung Tang

IPC: H01P1/208 ,  H04B3/14

CPC classification number: H01P1/2082

Abstract: A bandpass filter has a plurality of cascade wave-guide cavities each resonating in three independent orthogonal modes. The cavities can be cylindrical or have a square cross-section. Where the cavities are circular, each cavity resonates in TE.sub.111 or TE.sub.010 modes simultaneously. Where the cavities have a square cross-section, each cavity resonates in TE.sub.011 and TM.sub.110 modes simultaneously. Between each triple-mode cavity, there is located an iris having an aperture with four separate radial slots that are offset from a center of the iris. The filter is capable of producing an elliptic function response. In a variation of the invention, an allpass filter has an output that is short circuited and, when used in conjunction with a circulator, it functions as a group delay equalizer. Previous triple-mode filters are not capable of producing an acceptable result relative to dual-mode filters.

Abstract translation: 带通滤波器具有多个级联波导腔，每个在三个独立的正交模式中谐振。 空腔可以是圆柱形的或具有正方形的横截面。 在腔是圆形的情况下，每个腔同时以TE111或TE010模式谐振。 在空腔具有正方形横截面的情况下，每个腔同时在TE011和TM110模式下谐振。 在每个三模腔之间，设有具有孔的光圈，其具有与虹膜中心偏移的四个分开的径向槽。 滤波器能够产生椭圆函数响应。 在本发明的变型中，全通滤波器具有短路的输出，并且当与循环器结合使用时，其作为组延迟均衡器。 以前的三模式滤波器不能相对于双模式滤波器产生可接受的结果。

公开(公告)号：US4622523A

公开(公告)日：1986-11-11

申请号：US710156

申请日：1985-05-03

Applicant: Wai-Cheung Tang

Inventor： Wai-Cheung Tang

IPC: H01P1/208 ,  H04B3/14

CPC classification number: H01P1/2082

Abstract: A bandpass filter has a plurality of cascade waveguide cavities each resonating in three independent orthogonal modes. The cavities can be cylindrical or have a square cross-section. Where the cavities are circular, each cavity resonates in TE.sub.111 or TE.sub.010 modes simultaneously. Where the cavities have a square cross-section, each cavity resonates in TE.sub.011 and TM.sub.110 modes simultaneously. Between each triple-mode cavity, there is located an iris having an aperture with four separate radial slots that are offset from a center of the iris. The filter is capable of producing an elliptic function response. In a variation of the invention, an allpass filter has an output that is short circuited and, when used in conjunction with a circulator, it functions as a group delay equalizer. Previous triple-mode filters are not capable of producing an acceptable result relative to dual-mode filters.

Abstract translation: 带通滤波器具有多个级联波导腔，它们以三个独立的正交模式共振。 空腔可以是圆柱形的或具有正方形的横截面。 在腔是圆形的情况下，每个腔同时以TE111或TE010模式谐振。 在空腔具有正方形横截面的情况下，每个腔同时在TE011和TM110模式下谐振。 在每个三模腔之间，设有具有孔的光圈，其具有与虹膜中心偏移的四个分开的径向槽。 滤波器能够产生椭圆函数响应。 在本发明的变型中，全通滤波器具有短路的输出，并且当与循环器结合使用时，其作为组延迟均衡器。 以前的三模式滤波器不能相对于双模式滤波器产生可接受的结果。

公开(公告)号：US20220109219A1

公开(公告)日：2022-04-07

申请号：US17062171

申请日：2020-10-02

Applicant: COM DEV Ltd.

Inventor： Rousslan Goulouev ,  Colin McLaren

IPC: H01P1/205

Abstract: Various embodiments for a coaxial low-pass filter are described herein. Generally, the coaxial low-pass filter is operable to generate a stopband by a controlled generation of transmission zeroes within a stopband frequency range. The coaxial filter includes a plurality of cavity junctions, each of the plurality of cavity junctions operable to generate at least one corresponding cavity-specific transmission zero through a dual-mode coupling of a transverse electromagnetic and a transverse magnetic resonant mode, the at least one cavity-specific transmission zero being generated at at least one corresponding frequency located within the stopband frequency range, wherein for each cavity junction, the location of the cavity-specific frequency is adjusted by adjusting at least one property of the cavity junction, wherein a scattering of the locations of each of the cavity-specific transmission zeroes, generated by each of the plurality of cavity junctions, generates the stopband at the desired frequency range.