A substrate-integrated waveguide planar end-fire circularly polarized antenna

Abstract

The invention discloses a planar end-fire circular polarization antenna employing a substrate integrated waveguide. The planar end-fire circular polarization antenna comprises a dielectric substrate, the substrate integrated waveguide, a dipole array and a feed waveguide connected to the dielectric substrate, wherein the substrate integrated waveguide comprises two rows of metalized via holes; each of the two rows of metalized via holes comprises a straight section and an open section; the straight sections are parallel to one another, one end of each straight section is connected to the feed waveguide and the open sections gradually expand towards two sides along the corresponding straight sections; the substrate integrated waveguide comprises the two rows of metalized via holes; the dipole array comprises a plurality of array elements; the array elements are connected with an upper metal surface and a lower metal surface of the substrate integrated waveguide; and the spaces between the array elements and between the calibers of the open sections are different, so that the planar end-fire circular polarization antenna is low in requirements on a feed network, high in gain, simple in structure and easy to integrate, and the end-fire beam direction and the plane of the antenna are coplanar.

Description

technical field

[0001] The invention relates to the field of antennas, in particular to a substrate-integrated waveguide planar end-fire circularly polarized antenna, which can be used for both receiving and transmitting radio waves. Background technique

[0002] As an important transceiver device, the performance of the antenna has a great impact on the entire communication system, and the radiation form of the antenna has increasingly become an important factor in the selection of the antenna type in the wireless communication system. In many modern wireless application systems, purely linearly polarized antennas are difficult to meet the needs, and circularly polarized waves must be used for normal work. The circularly polarized antenna can receive incoming waves of any polarization, and its radiated waves can also be received by any polarized antenna, so the circularly polarized antenna can make the relative position between the transmitting antenna and the receiving ant...

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