公开(公告)号：US5608363A

公开(公告)日：1997-03-04

申请号：US221947

申请日：1994-04-01

Applicant: Richard J. Cameron ,  Wai-Cheung Tang ,  Van Dokas

Inventor： Richard J. Cameron ,  Wai-Cheung Tang ,  Van Dokas

IPC: H01P1/208 ,  H01P1/201

CPC classification number: H01P1/2084

Abstract: The invention relates to a single mode multi-cavity microwave filter that includes a housing formed with a plurality of walls which define at least two rows of side-by-side dielectric loaded cavities, wherein sequential cavities are coupled to one another via slots formed in the walls therebetween and at least one pair of non-sequential adjacent cavities are coupled via a probe. The coupling via the slots is defined mathematically as positive coupling. The probe is selectively configurable to provide positive or negative coupling relative to the sign of the slot coupling. Further, at least one non-adjacent, non-sequential pair of cavities is coupled via a second probe that may be configured to provide either positive or negative coupling relative to the sign of the slot coupling. The filter housing supports a plurality of adjustable fins which extend into the slots, one fin to each slot, to selectively adjust the size of the slot.

Abstract translation: 本发明涉及单模多腔微波过滤器，其包括形成有多个壁的壳体，所述多个壁限定至少两排并排的电介质负载腔，其中顺序腔通过形成在其中的槽 其间的壁和至少一对非顺序相邻的空腔经由探头耦合。 通过槽的耦合在数学上定义为正耦合。 探针可选择性地配置为提供相对于槽耦合的符号的正或负耦合。 此外，至少一个不相邻的非顺序的空腔对经由第二探针耦合，第二探针可以被配置为相对于狭槽耦合的符号提供正或负耦合。 过滤器壳体支撑多个可调节的翅片，其延伸到槽中，一个翅片延伸到每个槽，以选择性地调节槽的尺寸。

公开(公告)号：US5498771A

公开(公告)日：1996-03-12

申请号：US161256

申请日：1993-12-03

Applicant: Raafat R. Mansour ,  Van Dokas

Inventor： Raafat R. Mansour ,  Van Dokas

IPC: H01P1/208 ,  H01P7/10 ,  H01B12/06 ,  H01P1/20

CPC classification number: H01P1/2084 ,  Y10S505/70 ,  Y10S505/866

Abstract: Microwave bandpass filters contain dielectric resonators mounted in dielectric blocks, which are in turn mounted in cavities. There can be more than one dielectric resonator per cavity. Significant size reduction has been achieved over prior art filters. The filters can be operated at cryogenic temperatures and since the results attainable at cryogenic temperatures are repeatable, the filters can be tuned at cryogenic temperatures and returned to room temperature before being returned to cryogenic temperatures for operating purposes. When operated at cryogenic temperatures, the filters contain shorting plates having high temperature superconducting material thereon. The filters can be constructed with various configurations and can be operated in either a single mode or a dual-mode. Previous single mode or dual-mode dielectric resonator filters are larger in size and mass than the filters of the present application.

Abstract translation: 微波带通滤波器包含安装在介质块中的介质谐振器，它们依次安装在空腔中。 每个腔可以有多个介质谐振器。 与现有技术的过滤器相比，已经实现了显着的尺寸减小。 过滤器可以在低温下运行，并且由于可以在低温下实现的结果是可重复的，因此过滤器可在低温下进行调节并返回到室温，然后返回到低温温度进行操作。 当在低温运行时，过滤器包含其上具有高温超导材料的短路板。 滤波器可以用各种配置构造，并且可以在单模或双模操作。 以前的单模或双模介质谐振器滤波器的尺寸和质量比本申请的滤波器大。

公开(公告)号：US5025235A

公开(公告)日：1991-06-18

申请号：US343801

申请日：1989-04-27

Applicant: Protap Pramanick

Inventor： Protap Pramanick

IPC: H01P1/203

CPC classification number: H01P1/20336

Abstract: A microstripline interdigital planar filter has a number of microstripline coupled resonators in an inhomogeneous medium consisting a soft dielectric substrate, and a high dielectric constant, high Q ceramic superstrate. The resonators are printed on the soft substrate as thick copper strips. The rectangular shaped, silver-coated aluminum housing dimensions are chosen so as to give the highest available unloaded Q factor of the resonators. The high dielectric constant of the superstrate is chosen so as to give a very small resonator length resulting in a very small filter size. The input and the output ports are located at right tapping points on the two outermost resonators. The tapping points are chosen so as to match the loaded Q factor of the filter. Previous filters are physically larger and cannot achieve the same high level of performance characteristics as filters of the present invention.

Abstract translation: 微阵列叉指平面滤波器在由非电介质基底和高介电常数高Q陶瓷覆层组成的非均匀介质中具有许多微带线耦合谐振器。 谐振器作为厚铜带印在软基板上。 选择矩形银镀银铝外壳尺寸，以便提供谐振器的最高可用卸载Q系数。 选择上覆层的高介电常数以使得非常小的谐振器长度导致非常小的滤波器尺寸。 输入和输出端口位于两个最外面的谐振器上的右边点。 选择点击点以匹配滤波器的加载Q因子。 以前的过滤器在物理上更大，并且不能实现与本发明的过滤器相同的高水平的性能特征。

公开(公告)号：US4868574A

公开(公告)日：1989-09-19

申请号：US119716

申请日：1987-11-12

Applicant: Anthony R. Raab

Inventor： Anthony R. Raab

IPC: G01S13/66 ,  H01Q3/22

CPC classification number: H01Q3/22 ,  G01S13/66

Abstract: An electronically scanned radar system has a serpentine antenna, with at least two ports. The antenna is physically rotated. Each port has a mixer, transmitter and local oscillator feeding signals to it, the signals of the transmitter and oscillator being synchronized with one another to take advantage of the physical rotation of the antenna. The radar system can be operated in various ways to produce two independent beams simultaneously in a surveillance mode and/or tracking mode at each port. Furthermore, with the use of coupling means, the system can be operated to produce four independent beams at two different frequencies simultaneously. The system can also be operated to produce one or more beams in a surveillance mode and/or one or more beams in a tracking mode at each port. Further, the system can be operated to compensate for the physical rotation of the antenna and can avoid jammers by hopping to another frequency.

Abstract translation: 电子扫描雷达系统具有蛇形天线，至少有两个端口。 天线物理旋转。 每个端口都有一个混频器，发送器和本地振荡器向其发送信号，发射器和振荡器的信号彼此同步，以利用天线的物理旋转。 雷达系统可以以各种方式操作，以在每个端口的监视模式和/或跟踪模式下同时产生两个独立的波束。 此外，通过使用耦合装置，可以操作该系统以同时在两个不同频率处产生四个独立的波束。 该系统还可以被操作以在监视模式下产生一个或多个光束和/或在每个端口处以跟踪模式的一个或多个光束。 此外，该系统可以被操作以补偿天线的物理旋转，并且可以通过跳到另一个频率来避免干扰。

公开(公告)号：US4851801A

公开(公告)日：1989-07-25

申请号：US269053

申请日：1988-11-09

Applicant: Klaus G. Engel

Inventor： Klaus G. Engel

IPC: H01P1/12 ,  H01H51/22

CPC classification number: H01H51/2209

Abstract: A microwave switch that is an S-switch or a C-switch or the like has an electromagnetic actuator and a plurality of armatures. The armatures moves simultaneously in a linear path in response to the electromagnetic actuator. The actuator has one permanent magnet for each aperture and the switch has at least one coil winding. When an electric current is passed through the winding, the armatures move into a closed or open position, as desired. The only moving parts in the switch are the armatures themselves. The switch does not contain any complex mechanical arrangement or return springs that have been found in previous switches. The mass and volume of the switch as well as the number of moving parts is greatly reduced when compared to previous switches. This is very important when the switch is used in satellites.

公开(公告)号：US4814775A

公开(公告)日：1989-03-21

申请号：US25271

申请日：1987-03-12

Applicant: Anthony R. Raab ,  Henry Downs

Inventor： Anthony R. Raab ,  Henry Downs

IPC: H01Q3/40 ,  H01Q25/00 ,  H01Q3/22 ,  H01Q3/24 ,  H01Q3/26

CPC classification number: H01Q25/007 ,  H01Q25/00 ,  H01Q3/40

Abstract: A reconfigurable beam-forming network for use with a transmitter has a waveguide R-switch that is interconnected with a Magic T. The R-switch contains phasing elements and is connected to a dual-mode power-dividing network, which in turn is connected to first, second and third region power-dividing networks, each having their own feed horn array. The R-switch can be moved to three different positions so that in a first position power is divided between two input ports of the dual-mode network on substantially a fifty-fifty basis with the power on the two input ports being out of phase on a positive basis. In a second position of the R-switch, power is also divided on substantially a fifty-fifty basis between the two input ports but the power is out of phase between the two ports on a negative basis. In a third position of the R-switch, substantially all of the power entering the R-switch is passed into the first input port of the dual-mode network. The power being fed to the feed horns of any one of the regions has the same phase. In a variation of the invention, the R-switch and Magic T are replaced by a variable phase shifter and Magic T.

Abstract translation: 与发射机一起使用的可重构波束形成网络具有与Magic T互连的波导R开关.R开关包含相控元件，并连接到双模功率分配网络，该双模功率分配网络又连接 到第一，第二和第三区域功率分配网络，每个具有自己的馈电喇叭阵列。 R开关可以移动到三个不同的位置，使得在第一位置上，两个输入端口上的电源相位不同，功率在基本上是五十五个基础上被划分在双模式网络的两个输入端口之间 积极的基础。 在R开关的第二位置，功率也在两个输入端口之间基本上基于五十五个基准分压，但两个端口之间的功率在负的基础上不同相。 在R开关的第三位置，进入R开关的基本上所有的功率都被传递到双模网络的第一输入端口。 供给到任何一个区域的进料角的功率具有相同的相位。 在本发明的变型中，R开关和魔术T由可变移相器和魔术T代替。

公开(公告)号：US4673903A

公开(公告)日：1987-06-16

申请号：US667824

申请日：1984-11-02

Applicant: Abdelmegid K. Saad

Inventor： Abdelmegid K. Saad

IPC: H01P1/211

CPC classification number: H01P1/211

Abstract: A waveguide lowpass filter has successive groups of three separate ridges spaced longitudinally in said filter. A center ridge of each filter has a larger cross-sectional area than two side ridges which are the same size. All ridges are parallel to one another in a longitudinal direction. The groups are associated with shunt capacitances and the spaces between adjacent groups are associated with series inductances in an evanescent mode. In operation, the filter is capable of supporting a TE.sub.10 mode in the passband and three modes, TE.sub.10, TE.sub.20 and TE.sub.30 in the stopband. The filter has a relatively high power handling capability as compared to previous evanescent mode lowpass harmonic filters.

Abstract translation: 波导低通滤波器具有在所述滤波器中纵向间隔开的三个独立脊的连续组。 每个过滤器的中心脊具有比两个相同尺寸的两个侧脊更大的横截面面积。 所有的脊在纵向上彼此平行。 这些组与分流电容相关联，并且相邻组之间的空间与ev逝模式中的串联电感相关联。 在工作中，滤波器能够支持通带中的TE10模式，阻带中的TE10，TE20和TE30三种模式。 与先前的渐逝模式低通谐波滤波器相比，滤波器具有相对较高的功率处理能力。

公开(公告)号：US20230093006A1

公开(公告)日：2023-03-23

申请号：US17478627

申请日：2021-09-17

Applicant: COM DEV Ltd.

Inventor： Alan Scott ,  Hugh Podmore

IPC: H04B10/25 ,  H04B10/50 ,  H04B10/294 ,  H04J14/02

Abstract: Various embodiments are disclosed herein with generally relate to an optical communication system using a photonic lantern. In at least one embodiment, the optical system comprises: an optical transmitter coupled to a signal transmitting path; an optical receiver coupled to a signal receiving path; a photonic lantern, the photonic lantern extending between a first open end and a second open end, the first end comprising an opening to a single multi-mode fiber, and the second end comprising a plurality of single mode fibers that are adiabatically coupled to the multi-mode fiber, the plurality of single-mode fibers includes a single-mode fiber adapted to carry a fundamental optical mode and the remaining single-mode fibers adapted to carry higher-order optical modes, wherein, the single-mode fiber is coupled to the optical transmitting path, the remaining single-mode fibers are coupled to the optical receiving path.

公开(公告)号：US11567264B2

公开(公告)日：2023-01-31

申请号：US17243359

申请日：2021-04-28

Applicant: COM DEV LTD.

Inventor： Thomas Ducellier

IPC: G02B6/293 ,  H04B10/40 ,  H04B10/118 ,  H04B10/112

Abstract: An optical communication system that includes terminals that operate with different, widely separated wavelengths in which a terminal in the system may be configured to function in both a first operational mode and in a second operational mode. For example, a terminal according to the techniques of this disclosure may communicate with full duplex communication by transmitting a first optical wavelength and receiving a second optical wavelength while in the first operational mode. The same terminal may be reconfigured to transmit the second optical wavelength and receive the first optical wavelength while in the second operational mode. In some examples, the terminal may be located in a spacecraft, such as an orbiting satellite or other vehicle, and may communicate with other terminals such as airborne terminals, terminals located at ground station on the Earth's surface, or with terminals located in other spacecraft.

公开(公告)号：US20210263293A1

公开(公告)日：2021-08-26

申请号：US16881338

申请日：2020-05-22

Applicant: COM DEV Ltd.

Inventor： Thomas Ducellier ,  Alexander Beaton ,  Sheng Hai Zheng

IPC: G02B19/00 ,  H04B10/50

Abstract: An optical system includes a plurality of internal apertures, a plurality of external optical assemblies and a telescope assembly positioned between the plurality of internal apertures and the plurality of external optical assemblies. Each internal aperture is operable to receive a corresponding aperture-specific optical signal. Each external optical assembly corresponds to one of the internal apertures, and each external optical assembly is operable to direct the aperture-specific optical signal of the corresponding internal aperture in a corresponding external direction. The external direction for each external optical assembly is independently controllable and the telescope assembly defines a shared optical train arranged to direct the aperture-specific optical signals between each internal aperture and the corresponding external optical assembly.