公开(公告)号：US4792771A

公开(公告)日：1988-12-20

申请号：US15061

申请日：1987-02-17

Applicant: David Siu

Inventor： David Siu

IPC: H01P1/208 ,  H01P1/207

CPC classification number: H01P1/2082

Abstract: A quadruple mode bandpass filter has at least one cavity resonating in four independent orthogonal modes simultaneously. Preferably, the filter has two cavities, one cavity being a quadruple mode cavity and the remaining cavity being either a single mode, dual mode, triple mode or quadruple mode cavity. By introducing a resonant feedback coupling into filters of the present invention, the number of transmission zeros produced by the filter is equal to the order of the filter. Previous filters have cavities resonating in either a single, dual or triple mode and the maximum number of transmission zeros is equal to the order of the filter minus two.

Abstract translation: 四模式带通滤波器具有至少一个谐振在四个独立正交模式中的谐振腔。 优选地，过滤器具有两个空腔，一个空腔是四重模式空腔，其余空腔是单模式，双模式，三重模式或四重模式腔。 通过将谐振反馈耦合引入到本发明的滤波器中，由滤波器产生的传输零数量等于滤波器的次数。 以前的滤波器具有以单模式，双模式或三模式谐振的空腔，并且最大数量的传输零点等于滤波器的次数减去两倍。

公开(公告)号：US4733201A

公开(公告)日：1988-03-22

申请号：US840689

申请日：1986-03-18

Applicant: Joseph Helszajn ,  William Thorpe

Inventor： Joseph Helszajn ,  William Thorpe

IPC: H01P1/365

CPC classification number: H01P1/365

Abstract: A fin-line resonance isolator has layers of hexagonal ferrite material that are stacked relative to one another so that the overall length of the isolator remains substantially constant as the number of layers of ferrite material increases. The isolator has substrate materials that are arranged so that the plane of circular polarization is shifted to a center of the isolator. Isolators of the present invention are capable of producing improved responses over prior art isolators while reducing insertion loss and achieving a weight and volume saving.

Abstract translation: 翅片线共振隔离器具有彼此堆叠的六边形铁氧体材料层，使得隔离层的总长度随着铁素体材料层数的增加而保持基本恒定。 隔离器具有被布置成使得圆偏振平面移动到隔离器的中心的衬底材料。 本发明的隔离器能够产生比现有技术的隔离器更好的响应，同时减少插入损耗并实现重量和体积节省。

公开(公告)号：US4614920A

公开(公告)日：1986-09-30

申请号：US690741

申请日：1985-01-11

Applicant: Robert S. K. Tong

Inventor： Robert S. K. Tong

IPC: H01P1/208 ,  H01P1/209 ,  H01P5/12

CPC classification number: H01P1/209 ,  H01P1/2082

Abstract: A multiplexer has a plurality of bandpass filters coupled through E-plane or H-plane T-junctions to a waveguide manifold. Where the multiplexer has four channels and each filter is a six-pole filter, two triple mode cavities make up each filter. Where each filter is a five-pole filter, one triple cavity and one dual mode cavity makes up each filter. Two band edge channel filters are operated to produce an asymmetrical filter function response, thereby causing extra transmission zeros to be created and improving the selectivity of the filter out of the passband. The multiplexer is designed for use in satellite communication systems and can have a reduced volume and weight when compared to previous multiplexers without any sacrifice in electrical performance.

Abstract translation: 多路复用器具有通过E平面或H平面T结耦合到波导歧管的多个带通滤波器。 在多路复用器具有四个通道并且每个滤波器是六极滤波器的情况下，两个三模腔构成每个滤波器。 在每个滤波器是五极滤波器的地方，一个三腔和一个双模腔构成每个滤波器。 操作两个带边沿通道滤波器以产生不对称的滤波器功能响应，从而产生额外的传输零点，并提高滤波器的通带的选择性。 多路复用器设计用于卫星通信系统，与以前的多路复用器相比可以减小体积和重量，而不牺牲电气性能。

公开(公告)号：US4513264A

公开(公告)日：1985-04-23

申请号：US448969

申请日：1982-12-13

Applicant: James B. Dorey ,  Wai-Cheung Tang

Inventor： James B. Dorey ,  Wai-Cheung Tang

IPC: H01P1/208 ,  H01P1/16

CPC classification number: H01P1/2082

Abstract: A bandpass filter 8 has a plurality of cascaded wave-guide cavities 11, 12 1N and inter-cavity coupling means 36, 37. One or more of the cavities 12, 1N is rotated relative to an input reference mode 52. The rotation causes quasi-orthogonal coupling structures to be introduced into said cavities 11, 12 1N. The rotation of one or more cavities enables symmetric or asymmetric amplitude and phase responses to be produced as desired.The filter can be used in channel multiplexers for satellite communication systems.

Abstract translation: 带通滤波器8具有多个级联的波导腔11,12N和腔间耦合装置36,37。空腔12,1N中的一个或多个相对于输入参考模式52旋转。旋转引起准 - 引入到所述空腔11,12N中的正交耦合结构。 一个或多个空腔的旋转使得能够根据需要产生对称或不对称的振幅和相位响应。 该滤波器可用于卫星通信系统的信道多路复用器。

公开(公告)号：US2447456A

公开(公告)日：1948-08-17

申请号：US57346245

申请日：1945-01-18

Applicant: GEN ANILINE & FILM CORP

Inventor： ANISH ALFRED W ,  CLARK CHARLES A

IPC: C07D277/64 ,  C07D293/12

CPC classification number: C07D293/12 ,  C07D277/64

公开(公告)号：US20220350083A1

公开(公告)日：2022-11-03

申请号：US17243359

申请日：2021-04-28

Applicant: COM DEV LTD.

Inventor： Thomas Ducellier

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

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：US20220140902A1

公开(公告)日：2022-05-05

申请号：US17085107

申请日：2020-10-30

Applicant: COM DEV LTD.

Inventor： Graham Martin ARBERY

IPC: H04B10/112 ,  H04B1/38 ,  H01Q15/14 ,  H04B10/118

Abstract: Disclosed are systems for transmitting and receiving a radio frequency (RF) signal and an optical signal. One system may include a communication terminal comprising a primary concave reflector providing a first focal length to a focal point, and a secondary concave reflector providing a second focal length to the focal point. The communication terminal may further comprise an optical transceiver facing the secondary concave reflector, and one or more RF transceivers facing the primary concave reflector. The optical transceiver may be configured to transmit and receive the optical signal via the primary and secondary concave reflectors through the focal point, and the one or more RF transceivers may be configured to transmit and receive the RF signal via the primary concave reflector. The one or more RF transceivers may be positioned adjacent to the focal point and offset from a path of the optical signal.

公开(公告)号：US10323923B2

公开(公告)日：2019-06-18

申请号：US15384832

申请日：2016-12-20

Applicant: COM DEV Ltd.

Inventor： Antonio Romano

IPC: G01B7/00 ,  H04Q9/00 ,  H04Q1/24 ,  G01R27/02

Abstract: A telemetry system with a matrixed telemetry switch unit array and a method for determining the switch position of a telemetry switch unit. The switch units include steering diodes and parallel signal paths each with unique resistance values. The signal paths correspond to switch positions and are closed when the switch unit is in the corresponding switch position. A signal source is electrically connected to an input current path and output current path of the array with a corresponding telemetry switch unit coupled into the signal path. A plurality of sensing signals are applied through the array and the resultant signals are measured. The switch position is determined from the resultant signals indicating the resistance value of the switch signal path currently coupled into the array signal path while accounting for the voltage drop of the steering diodes.

公开(公告)号：US10122251B2

公开(公告)日：2018-11-06

申请号：US14725686

申请日：2015-05-29

Applicant: COM DEV Ltd.

Inventor： Brian Keats ,  Klaus Engel

IPC: H02K37/10 ,  H01P1/12 ,  H02K37/02 ,  H02K1/14 ,  H02K19/06

Abstract: A sequential actuator for a radio frequency switch includes a rotor designed to be rotated in a designated rotational direction of the actuator and a stator defining with the rotor when the stator is energized an active torque curve of the rotor having asymmetric positive and negative torque curve portions. Magnetic elements are distributed between the rotor and the stator and define a detent torque curve of the rotor. In some examples, when the stator is energized, the rotor undergoes a first rotation from a position of partial angular overlap of a first rotor magnetic element with a first stator electromagnet to a position of angular alignment of the first rotor magnetic element with the first stator electromagnet. Upon reaching this angular position, a second rotor magnetic element has a partial angular overlap with a second stator electromagnet and the rotor further undergoes a second rotation to another position of angular alignment of the second rotor magnetic element with the second stator electromagnet.

公开(公告)号：US07135947B2

公开(公告)日：2006-11-14

申请号：US10765944

申请日：2004-01-29

Applicant: Klaus Gunter Engel

Inventor： Klaus Gunter Engel

IPC: H01H67/02

CPC classification number: H01P1/122 ,  H01P1/12

Abstract: A hybrid switch actuator having six positions that are stable in the absence of current and in which displacement occurs between an initial position and a target position under the action of a current. The actuator includes a stator and a rotationally moveable rotor package. The stator has six pole shoes. Each pair of opposed pole shoes is equipped with a common exciting coil. The rotor package has two pairs of rotor poles magnetized transversely in alternate directions and a permanent magnet ring and two end caps adapted to be engaged around said permanent magnet ring. Each end cap is associated with two rotor poles having maximum radius regions that correspond to the area of each of the stator pole shoes and reduced radius regions positioned adjacent the maximum radius regions such that each rotor pole can be precisely aligned with each stator pole shoe.

Abstract translation: 具有六个位置的混合开关致动器，其在没有电流的情况下是稳定的，并且在电流作用下在初始位置和目标位置之间发生位移。 致动器包括定子和可转动的转子组件。 定子有六个极靴。 每对相对的极靴配备有共同的励磁线圈。 转子组件具有两对在交替方向上横向磁化的转子极，永磁体环和两个端盖适于围绕所述永磁体环接合。 每个端盖与两个转子极相关联，两个转子极具有对应于每个定子极靴的面积的最大半径区域和与最大半径区域相邻的减小的半径区域，使得每个转子极可以精确地对准每个定子极靴。