A Common Aperture Full Space Coverage Antenna

Abstract

The invention discloses a common-aperture full-airspace coverage antenna, which comprises a printed circuit board, on which a feed network is formed, on which a vertically polarized antenna unit and four circularly polarized antenna units are arranged. and four periodic decoupling structures, four circularly polarized antenna units are arranged around the center of the vertically polarized antenna unit, and a periodic decoupling structure is provided between each circularly polarized antenna unit and the vertically polarized antenna unit, Both the vertically polarized antenna unit and the circularly polarized antenna unit are connected to the feeding network, and the vertically polarized antenna unit, the circularly polarized antenna unit and the periodic decoupling structure have a common aperture. The invention can realize the coverage of the antenna pattern in the whole airspace, greatly reduce the size and weight of the antenna, and improve the utilization rate of the antenna aperture.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a common-aperture full-space coverage antenna. Background technique [0002] With the rapid development of information and electronic technology, more and more communication systems have put forward the demand for full airspace communication, which requires antenna directivity to achieve full airspace coverage. Traditional communication antenna applications do not have the ability to cover the entire airspace, such as traditional ground-to-air communication or air-to-air communication, generally using vertically polarized antennas for communication, but vertically polarized antennas cannot achieve headspace coverage, resulting in communication failure when overhead , and for circularly polarized antennas, although headspace coverage can be achieved, for low-elevation angle airspace, the performance deteriorates seriously, resulting in the inability to communicate at long-distanc...

AI Technical Summary

Problems solved by technology

Traditional communication antenna applications do not have the ability to cover the entire airspace, such as traditional ground-to-air communication or air-to-air communication, generally using vertically polarized antennas for communication, but vertically polarized antennas cannot achieve headspace coverage, resulting in communication failure when overhead , and for circularly polarized antennas, although headspace coverage can be achieved, the performance deteriorates seriously for low-elevation airspace, resulting in the inability to communicate at long-distance low-elevation angles

Simply arranging the two antennas side by side will inevitably result in waste of space and increased weight, and will affect the antenna directivity due to the mutual coupling of the antennas, which is unacceptable for some platforms.

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