Circular polarization crossed dipole antenna and manufacturing method thereof

Abstract

The invention discloses a circular polarization crossed dipole antenna and a manufacturing method of the circular polarization crossed dipole antenna. The circular polarization crossed dipole antenna comprises a metal reflection board, a medium substrate located above the metal reflection board, crossed dipole radiation units arranged on the upper surface and the lower surface of the medium substrate respectively, and a coaxial feed unit connected with the crossed dipole radiation units. The crossed dipole radiation units comprise an upper dipole and a lower dipole which are arranged on the upper surface and the lower surface of the medium substrate respectively. The coaxial feed unit comprises an inner conductor and an outer conductor. The inner conductor penetrates through the metal reflection board and the medium substrate to be connected with the upper dipole. The outer conductor penetrates through the metal reflection board to be connected with the lower dipole. The crossed dipole antenna is led to a micro-strip patch, so that the circular polarization crossed dipole antenna not only has the advantages that a micro-strip antenna is small in size, light in weight, conformal with an application platform easily and easy to integrate, but also has the advantages of the wide impedance bandwidth, the circular polarization bandwidth, high gains and low manufacturing cost.

Description

Technical field [0001] The invention relates to the technical field of microwave antennas, in particular to a circularly polarized cross dipole antenna and a preparation method thereof. Background technique [0002] The rapid development of wireless technology has led to the great development of antenna technology. In particular, circularly polarized antennas have been widely used in various fields of wireless communication, such as satellite communications, radio frequency devices (RFID), wireless local area networks (WLAN), The Global Positioning System (GPS) and the Beidou positioning system independently developed by my country all use circularly polarized antennas. The wider the application, the higher the requirements for antenna performance. In many applications, both the antenna impedance bandwidth and the circular polarization bandwidth (axial ratio bandwidth) are very wide. There are many ways to broaden the bandwidth of a circularly polarized antenna, such as attaching...

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Problems solved by technology

[0004] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a circularly polarized crossed dipole antenna a...

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