Low-coupling double-frequency double-radiation pattern antenna

Abstract

The invention discloses a low-coupling dual-frequency dual-radiation pattern antenna, the antenna comprises a first dielectric plate, a second dielectric plate and a metal grounding plate, the first dielectric plate is composed of a first substrate, an octagonal patch and a parasitic patch, the octagonal patch and the parasitic patch are placed on the upper surface of the first substrate, and the octagonal patch is provided with a gap; the second dielectric plate is composed of a second substrate and a circular patch, the circular patch is placed on the upper surface of the second substrate, and an annular gap is formed in the circular patch. The metal grounding plate is connected with the first dielectric plate through the first probe and is connected with the second dielectric plate through the second probe. The antenna with the circular polarization normal radiation characteristic and the antenna with the linear polarization conical radiation performance are integrated under the same aperture, the space occupied by the antenna is greatly reduced, and the dual-band, dual-polarization and dual-radiation directional diagram characteristics of the antenna are achieved.

Description

technical field [0001] The invention relates to a low-coupling dual-frequency dual-radiation pattern antenna, which belongs to the technical field of wireless communication. Background technique [0002] In recent years, with the rapid development of the electronics industry and communication technology, UAV technology has also appeared more widely in the civilian field, such as earthquake relief, intelligent cruise, urban aerial photography, etc.; but the earliest UAV was used in the military field. For reconnaissance of the enemy, transmission of intelligence, etc., due to the large size of UAVs, it is not really popular in the public eye. [0003] The positioning and cruising of the UAV and the real-time communication with the ground are completely dependent on the navigation antenna and the communication antenna. The antenna used for traditional UAV navigation uses a helical antenna, because the antenna can generate circularly polarized waves, the circularly polarized a...

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiencies in the prior art, to provide a low-coupling dual-frequency dual-radiation pattern antenna, to solve the problem that the size of the traditional unmanned aerial vehicle airborne antenna is too large and the axial ratio bandwidth of the antenna used for navigation is relatively narrow. Make the designed antenna have different polarization modes and patterns in different frequency bands (low frequency: circular polarization normal radiation, high frequency: linear polarization cone radiation); at the same time, integrate the two polarization antennas together , to reduce the space occupied by traditional UAV airborne antennas

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