Antenna subsystem

By designing a sputtered plate cap-type feed parabolic antenna, a circular waveguide rotary joint, and an orthogonal mode sensor assembly, combined with an antenna servo control system, the problems of high signal loss, insufficient polarization matching accuracy, and lag in attitude tracking response in Ku-band satellite communication were solved, achieving efficient signal transmission and stable satellite alignment, and improving communication quality.

CN224472700UActive Publication Date: 2026-07-07THE SINO SATELLITE COMM CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
THE SINO SATELLITE COMM CO LTD
Filing Date
2025-09-10
Publication Date
2026-07-07

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Abstract

The utility model discloses a kind of antenna subsystem, it is related to satellite communication technical field, the system includes: including antenna feed system and antenna servo control system: antenna feed system includes splash board cap type feed parabolic antenna, circular waveguide rotary joint and quadrature mode sensor assembly;Splash board cap type feed parabolic antenna is used to receive Ku frequency band signal sent by satellite and is transmitted through waveguide tube, and radiate to satellite to be emitted signal;Circular waveguide rotary joint is used to adjust polarization angle to match the polarization direction of satellite signal;Quadrature mode sensor assembly has two independent ports, respectively for connecting receiving link and transmitting link, to realize the physical isolation of transceiving signal;Antenna servo control system includes for controlling driving component according to satellite position information to drive splash board cap type feed parabolic antenna to adjust attitude, help to solve the problem that prior art cannot realize antenna subsystem high-efficiency transceiving signal.
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