ANTENNA FEED HORN WITH NEAR-CONSTANT PHASE CENTER WITH SUBREFLECTOR TRACKING IN THE Z-AXIS

    公开(公告)号:US20240047869A1

    公开(公告)日:2024-02-08

    申请号:US18272544

    申请日:2023-03-23

    Inventor: David WEBB

    CPC classification number: H01Q3/16 H01Q13/0208 H01Q19/132 H01Q19/19

    Abstract: A dual reflector earth station antenna (ESA) system for transmitting uplink in a first frequency band and receiving downlink in a second frequency band, the ESA system comprises a reflector; a reflector tracking assembly coupled to the reflector and configured to control the direction of the reflector; a feed horn coupled to the reflector and optimized for a near-constant phase center for both the first frequency band and the second frequency band; a subreflector tracking assembly including a subreflector, configured for tracking in the X, Y and Z-axes and supported proximate a focal point of the reflector; and a control system in communication with the subreflector tracking assembly and comprising at least one processor. The processor is configured to adjust the subreflector of the subreflector tracking assembly along X, Y and Z axes of the reflector until a signal gain of the reflector antenna is maximized for the second frequency band; and wherein a signal gain of the reflector antenna is also simultaneously maximized for the first frequency band due to the optimization of the feed horn for a near-constant phase center for both the first frequency band and the second frequency band.

    Dual-band antenna
    4.
    发明授权

    公开(公告)号:US11652294B2

    公开(公告)日:2023-05-16

    申请号:US17101826

    申请日:2020-11-23

    CPC classification number: H01Q5/55 H01Q5/47 H01Q13/06 H01Q19/10 H01Q19/19

    Abstract: The present disclosure relates to coaxial dual-band antennas. One example antenna includes a waveguide tube, a ring groove, and a high frequency feed. The waveguide tube has a tubular structure and is configured to transmit a first electromagnetic wave. The ring groove whose opening direction is the same as an output direction of the first electromagnetic wave is on a wall of the waveguide tube. A frequency of the first electromagnetic wave is lower than a frequency of an electromagnetic wave transmitted by the high frequency feed. The high frequency feed is located in the waveguide tube and has a same axis with the waveguide tube.

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