MITIGATION OF POLARIZATION MISMATCH BETWEEN REFLECTOR AND FEED ANTENNAS BY FEED PREDISTORTION

    公开(公告)号:WO2020097000A1

    公开(公告)日:2020-05-14

    申请号:PCT/US2019/059747

    申请日:2019-11-05

    Abstract: An apparatus and method for mitigating polarization mismatch in reflector antenna systems. A feed unit is configured to determine a polarization mismatch between a first polarization associated with a first wave and a second polarization associated with a reflector unit. The feed unit pre-distorts the first wave to achieve a compensated polarization for reducing and/or eliminating a polarization mismatch. The pre-distorted first wave having the compensated polarization is used to illuminate the reflector unit. A re-radiated wave is reflected by the reflector unit. Furthermore, the level of the re-radiated wave is increased as a result of the pre-distortion.

    SATELLITE GROUND TERMINAL UTILIZING FREQUENCY-SELECTIVE SURFACE DIPLEXER
    2.
    发明申请
    SATELLITE GROUND TERMINAL UTILIZING FREQUENCY-SELECTIVE SURFACE DIPLEXER 审中-公开
    卫星接地终端使用频率选择表面DIPLEX

    公开(公告)号:WO2016205715A1

    公开(公告)日:2016-12-22

    申请号:PCT/US2016/038188

    申请日:2016-06-17

    Abstract: Systems and methods are provided for separating the uplink signal from the downlink signal in a satellite communication system. A communication terminal for satellite communications is provided, comprising a reflector having a prime focus; a first feed located at the prime focus of the reflector and in optical communication with the reflector; a frequency-selective surface module having a reflected focus and located at a point along a communication path between the main reflector and the first feed; and a second feed located at the reflected focus of the frequency- selective surface module and in optical communication with the frequency-selective surface module.

    Abstract translation: 系统和方法被提供用于在卫星通信系统中分离上行链路信号与下行链路信号。 提供了一种用于卫星通信的通信终端,包括具有主要焦点的反射器; 位于反射器的主要焦点处并与反射器光学连通的第一进给; 频率选择性表面模块,其具有反射焦点并且位于沿着主反射器和第一馈送之间的连接路径的点处; 以及位于频率选择性表面模块的反射焦点处并与频率选择性表面模块光学通信的第二馈电。

    METALLIZED PLASTIC HIGH RADIO FREQUENCY INTEGRATED WAVEGUIDE
    4.
    发明申请
    METALLIZED PLASTIC HIGH RADIO FREQUENCY INTEGRATED WAVEGUIDE 审中-公开
    金属化高频无线电频率集成波导

    公开(公告)号:WO2016061354A1

    公开(公告)日:2016-04-21

    申请号:PCT/US2015/055739

    申请日:2015-10-15

    CPC classification number: H01P3/121

    Abstract: An integrated waveguide for use in high radio frequency communication is provided. The integrated waveguide including: a first substrate including a first plastic layer having on a first inward-facing surface, a first portion of a waveguide feature formed on the first inward-facing surface, and a metal layer disposed on the first inward-facing surface; and a second substrate including a second plastic layer having a second inward-facing surface, a second portion of a waveguide feature formed on the second inward-facing surface, and a metal layer disposed on the second inward-facing surface, wherein the first substrate and the second substrate are assembled to define an integrated waveguide feature defined by an assembling of the first portion of the waveguide feature and the second portion of the waveguide feature.

    Abstract translation: 提供了一种用于高射频通信的集成波导。 所述集成波导包括:包括第一塑料层的第一基板,所述第一塑料层具有在第一向内的表面上,形成在所述第一向内的表面上的波导特征的第一部分和设置在所述第一内向表面上的金属层 ; 以及第二基板,包括具有第二向内表面的第二塑料层,形成在第二向内表面上的波导特征的第二部分和设置在第二向内表面上的金属层,其中第一基板 并且第二基板被组装以限定由波导特征的第一部分和波导特征的第二部分的组合限定的集成波导特征。

    A HYBRID SCANNING ANTENNA
    5.
    发明申请

    公开(公告)号:WO2022217198A1

    公开(公告)日:2022-10-13

    申请号:PCT/US2022/071473

    申请日:2022-03-31

    Abstract: A hybrid scanning antenna including: a reflector having a focal line; a first mechanical movement to move the reflector about a first axis; a second mechanical movement to move the reflector about a second axis; a linear array fixedly disposed along the focal line to electronically scan at a scan angle about a third axis; and a controller to control the first mechanical movement, the second mechanical movement and the scan angle of the linear array to orient the hybrid scanning antenna to a look angle of a remote transceiver.

    REDUCING REFLECTOR ANTENNA SPILLOVER LOBES AND BACK LOBES IN SATELLITE COMMUNICATION SYSTEMS

    公开(公告)号:WO2022099143A1

    公开(公告)日:2022-05-12

    申请号:PCT/US2021/058470

    申请日:2021-11-08

    Abstract: A system for reducing antenna spillover in a satellite communications system is disclosed. The system may include an apparatus comprising an antenna terminal, which in turn may include a sub-reflector and a main reflector. The main reflector may include at least one of an extension, a shroud, and a serrated edge. The extension may be a full rim extension or a partial extension. The shroud may be a full shroud or a partial shroud. The serrated edge may include a straight serration or a curved serration, the serrated edge also having various dimensions and profiles. In some examples, the sub-reflector and the main reflector of the antenna terminal may be provided and configured to reduce antenna spillover in accordance with antenna performance and interference restrictions set forth by one or more governing bodies.

    FREQUENCY SELECTIVE SURFACE ZONING TECHNIQUE

    公开(公告)号:WO2020142303A1

    公开(公告)日:2020-07-09

    申请号:PCT/US2019/068222

    申请日:2019-12-23

    Abstract: A method for providing frequency selective surface zoning includes selecting a location for positioning a frequency selective surface (FSS) panel along a support arm of a reflector antenna system, and positioning a second feed horn on the support arm on an opposite side of the FSS panel. A number of unit cells are used to populate the FSS panel, and metallic patterns are formed on each unit cell. Multiple zones are subsequently defined on the surface of the FSS panel. Each zone is optimized for a predetermined range of incident angles.

    TRACKING NON-GEO SYNCHRONOUS ORBIT SATELLITES ON ORBITING PLANES OF REGULAR MOTION PATTERNS

    公开(公告)号:WO2022087558A1

    公开(公告)日:2022-04-28

    申请号:PCT/US2021/071710

    申请日:2021-10-04

    Abstract: A system and method for tracking non-geo synchronous orbit satellites on orbiting planes of regular motion patterns. The method includes providing a first satellites moving in a direction descending in latitude in first orbital planes and a second satellites moving in a direction ascending in latitude in second orbital planes; steering an antenna to an antenna tilt φ from normal with a single axis mechanism lined up with a first axis; scanning, electronically, with a linear array at a scan angle ψ along a second axis; and locking to a signal from a handed-from satellite from the first satellites, where the first axis is angled from the second axis, the steering along the first axis and the scanning along the second axis jointly track the handed-from satellite. A handoff between the first satellites may use one of the second satellites as a steppingstone.

    PHASED ARRAY WITH INDEPENDENTLY STEERABLE BEAMS

    公开(公告)号:WO2020139822A1

    公开(公告)日:2020-07-02

    申请号:PCT/US2019/068302

    申请日:2019-12-23

    Abstract: Various antenna systems are presented that have independently steerable receive and transmit beams. The antenna system may include multiple antenna element systems. Each antenna element system may include multiple phase shifters that alter the phase of received signals and signals to be transmitted. Directions of a first transmit beam, a second transmit beam, a first receive beam, and a second receive beam may be steered independently using the phase shifters. Each antenna element system may include a polarization system.

    DIGITAL PHASE SHIFTER SWITCH AND TRANSMISSION LINE REDUCTION

    公开(公告)号:WO2019070768A1

    公开(公告)日:2019-04-11

    申请号:PCT/US2018/054041

    申请日:2018-10-02

    Abstract: A digital phase shifter is described where each bit of the phase shifter has a circuit block including one PIN diode in parallel with one transmission line. The phase shifter requires only one PIN diode and one transmission line per bit circuit block. Each PIN diode behaves like a simple switch for phase shifting. When the PIN diode is forward biased ("on" state), current flows through the PIN diode and the RF signal is not phase shifted. When the pin diode is not forward biased ("off" state), current flows through the transmission line parallel to the PIN diode and the RF signal is phase shifted by the transmission line. The digital phase shifter may have n circuit blocks in series, and adjacent PIN diodes may share a current when both are on. The phase shifter may be implemented in a phased array or reflect array antenna including multiple phase shifters.

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