A circular polarization multiplexing feed source network for ku-band transceiver common line

Abstract

The invention relates to a circular polarization multiplexing feed source network of Ku frequency band transceiver common line, which is composed of Ku frequency band transceiver four-port network and Ku frequency band line circular polarization switching network. Wavehead, four U-bend waveguides, two broadband waveguide Magic Ts, two waveguide loads, one +45° twist waveguide, one ‑45° twist waveguide, one phase compensating waveguide, four Z-bend waveguides, and two Transceiver frequency duplexer; Ku frequency band line circular polarization switching network includes four waveguide switches, four E-plane curved waveguides, two EH double-sided curved waveguides, receiving frequency band ±45° phase shifter, transmitting frequency band ±45° shifter phaser and two waveguide magic T. The invention adopts the waveguide switch as the linear circular polarization switching component, which not only switches quickly, but also has a high arrival rate, and ensures the airtightness of the feed source network. At the same time, the present invention has the characteristics of compact structure, free from debugging, and excellent electrical properties such as standing wave, axial ratio, and port isolation.

Description

technical field [0001] The invention relates to a circular polarization multiplexed feed source network of a Ku frequency band transceiver common line, in particular to two working states, which are respectively the Ku frequency band transceiver line polarization working state and the Ku frequency band transceiver circular polarization working state, belonging to reflective surface antennas Feed network field. Background technique [0002] In the satellite communication and measurement and control system, the reflector antenna is an indispensable and important part, and its performance directly determines the performance of the entire satellite communication and measurement and control system. As the core component of the reflector antenna, the feed network is used to realize the function of transmitting and receiving or polarization multiplexing of the reflector antenna. With the development of satellite communication and measurement and control technology, the system ofte...

AI Technical Summary

Problems solved by technology

The feed network with the above-mentioned structure is simple in principle and relatively mature in technology, but the narrow bandwidth of the waveguide sub-wave head directly affects the working bandwidth of the feed network, and the whole feed network has a large debugging workload, which is not suitable for mass production. Production

At the same time, due to the use of a DC motor to drive the waveguide phase shifter to switch between linear polarization and circular polarization, the mechanical structure is complex, the switching time is long, the switching rate is low, and the reliability is poor

The most important problem is that due to the impact of the circular waveguide rotary joint, it is difficult to achieve the airtightness of the entire feed source network. Airtightness throughout the life cycle, and maintenance work such as replacing oil seals is difficult

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