Transmitting-receiving common-aperture wide-angular-domain scanning satellite communication antenna array and aircraft with same

Abstract

The invention provides a transmitting-receiving common-aperture wide-angular-domain scanning satellite communication antenna array and an aircraft with the same. The antenna array comprises a metal bottom plate, a plurality of antenna units, and a plurality of metal columns, wherein an arbitrary antenna unit comprises five microwave dielectric plates, a transmitting radiation patch, a receiving radiation patch, a coupling feed patch, a feed network, a metal probe and a feed connector which are sequentially arranged from top to bottom, the feed network is a 3dB bridge feed network, and the feed network is arranged on the lower surface of the fourth microwave dielectric plate; the fourth microwave dielectric plate has a plurality of first metalized via holes, the fifth microwave dielectric plate has a plurality of second metalized via holes, and the plurality of first metalized via holes and the plurality of second metalized via holes are located around the feed network; and a plurality of metal columns are arranged on the outer sides of the plurality of antenna units. By applying the transmitting-receiving common-aperture wide-angular-domain scanning satellite communication antenna array and the aircraft of the invention, the technical problems that the satellite communication small-frequency-ratio transceiving common-caliber design cannot be realized and the gain is slowly reduced during large-angle scanning in the prior art are solved.

Description

technical field [0001] The invention relates to the technical field of communication antennas, in particular to a transmitting and receiving common-aperture wide-angle scanning satellite communication antenna array and an aircraft having the same. Background technique [0002] Most of the aircraft are equipped with various antennas such as measurement and control communication, satellite communication, and satellite navigation. Generally speaking, the satellite communication antenna is usually installed on the top of the aircraft in the form of a microstrip antenna. It needs to have the beam coverage capability of the upper half space for transmitting and receiving satellite communication signals. Generally speaking, the maneuvering of the aircraft will bring about changes in the direction of the antenna. , Therefore, in some satellite communication systems, the antenna is required to have high-gain characteristics in a large angular range. [0003] The phased array antenna...

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Problems solved by technology

[0005] The present invention provides a satellite communication antenna array with a common aperture for transmitting and receiving wide-angle scanning and an aircraft with it, which can solve the problem that the design of common aperture for transmitting and receiving with a small frequency ratio of satellite communication and the slow decrease in gain during large-angle scanning cannot be realized in the prior art question

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