Dual polarization transmit-receive waveguide array antenna

Abstract

The invention relates to the field of communication and measurement control and especially relates to a dual polarization transmit-receive waveguide array antenna. The polarization transmit-receive waveguide array antenna includes N broadband dual polarization antenna sub arrays and a polarization adjusting device. Each broadband dual polarization antenna sub array includes a dual polarization opening waveguide array radiation layer and a network feed layer, wherein the dual polarization opening waveguide array radiation layer is arranged above the network feed layer and the polarization adjusting device is arranged below the network feed layer. By adopting the waveguide grid structure for feeding a plate satellite antenna, the working bandwidth of the plate satellite antenna is enlarged,share of transmit-receive of antenna opening and face is realized, radiation grating lobe is reduced and an interface is provided for automatic adjustment of electromagnetic wave polarization direction.

Description

technical field [0001] The invention relates to a dual-polarization transceiver shared waveguide array antenna in the field of communication and measurement and control, which is suitable for low-profile flat-panel satellite communication antennas and dual-polarization array antennas in wireless measurement and control systems, and is especially suitable for vehicle-mounted (or other mobile carrier) satellite communications Antennas, array antennas with adjustable polarization. Background technique [0002] Satellite communication has the advantages of wide coverage and less interference. Combining low-orbit satellite groups with cellular communication technology to realize global personal communication is the development trend of satellite communication in the future; Communication has become an urgent need for both military and civilian emergency communications and real-time communications. The vehicle-mounted (ship-borne or airborne) satellite mobile communication system...

AI Technical Summary

Problems solved by technology

In the patent PCT / EP2013 / 001939, QEST company further announced the method of comprehensively using suspended microstrip line and waveguide network for feeding, which has a complex structure and a large overall thickness

[0007] The U.S. Raysat company has announced a flat-panel satellite antenna in patents PCT / BG2004 / 000011, US 7307586 B2 and US 2006 / 0152414A1. The antenna forms a radiation channel by stacking multi-layer open metal plates, and then uses two layers of micro The strip line is used for dual-polarization feeding, and the primary amplifier and LNB are directly integrated on the rear of the antenna panel. The structure is compact, but the dielectric loss of the microstrip line feeding is large, and the antenna radiation efficiency is also low.

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