Circular polarization electromagnetic dipole array antenna

Abstract

The invention provides a circular polarization electromagnetic dipole array antenna, which comprises four sub-arrays arranged on a dielectric plate and a sequence phase feed network, wherein each sub-array includes four antenna units, and the whole array antenna includes 16 antenna units; each sub-array is fed by a one-to-four power divider; in each sub-array, the one-to-four power divider is composed of a five integrated waveguide-to-coaxial line converter, one of the substrate integrated waveguides serves as the input, and energy is outputted by a coaxial line through the converter and allocated to the remaining four substrate integrated waveguides, is then transmitted to the coaxial line through the converter and finally supplies power to the four antenna units of the sub-array. The circular polarization electromagnetic dipole array antenna is simple in feed structure, uses the substrate integrated waveguide with high impedance as the input, simplifies the design of the sequence phase feed network and realizes the miniaturization of the overall structure.

Description

[0001] [technical field] [0002] The invention relates to the technical field of antennas, in particular to a circularly polarized electromagnetic dipole array antenna. [0003] [Background technique] [0004] With the further development of wireless communication technology, low-frequency bands are increasingly unable to meet the growing demand for bandwidth. Circularly polarized antenna communication systems have better communication quality than linear polarization, and there is no problem caused by polarization mismatch. Communication failure, because millimeter waves are not good at diffraction, circularly polarized millimeter wave antennas have positive significance for improving the capabilities of communication systems. Millimeter-wave microstrip lines generally use substrates with a thickness of 0.127mm or 0.254mm. The types of antennas that can use these two substrates are relatively limited, so the feed network design of millimeter-wave antennas is usually based on ...

AI Technical Summary

Problems solved by technology

The common substrate-integrated waveguide-to-coaxial rotator uses a basic integrated waveguide with a small impedance. Although it can be made into a converter with a wider bandwidth, the size is huge

In addition, due to the low impedance of traditional converters, they are not suitable for exciting antennas

On the other hand, converters made using substrate-integrated waveguides with higher impedances have narrower bandwidths

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