A Circularly Polarized Electromagnetic Dipole Array Antenna
An electromagnetic dipole and array antenna technology, which is applied in linear waveguide feed arrays, antenna arrays powered separately, antennas, etc., can solve problems such as unsuitable excitation antennas, small converter impedance, narrow bandwidth, etc., and achieve overall The effects of structure miniaturization, feed capacity improvement, and axial ratio bandwidth expansion
Active Publication Date: 2021-10-22
东莞市南斗星科技有限公司
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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
Method used
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[0033] Such as Figure 1-9 As shown, a circularly polarized electromagnetic dipole array antenna, in order to deal with air absorption, uses a 4 by 4 16-element antenna array to obtain a gain higher than that of a single antenna, specifically including 4 sub-arrays arranged on a dielectric board And the sequence phase feeding network, each sub-array all comprises 4 antenna units, and the whole array antenna comprises 16 antenna units; each sub-array is fed by a one-to-four power divider 6; in each sub-array, the one The power splitter 6 is composed of five substrate-integrated waveguide-to-coaxial converters. One of the substrate-integrated waveguides is used as an input, and the energy output from the coaxial line is distributed to the remaining four substrate-integrated waveguides through the converter. It passes through the converter to the coaxial line, and finally supplies power to the four antenna elements of each sub-array.
[0034] Such as Figure 6 The main structur...
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The invention provides a circularly polarized electromagnetic dipole array antenna, which includes 4 sub-arrays arranged on a dielectric plate and a sequence phase feed network, each sub-array includes 4 antenna units, and the entire array antenna includes 16 antennas unit; each sub-array is fed through a quarter-divider; in each sub-array, the quarter-divider consists of five substrate-integrated waveguide-to-coaxial converters, one of which is integrated The waveguide is used as an input, and the energy output from the coaxial line is distributed to the remaining four substrate integrated waveguides through the converter, and then transmitted to the coaxial line through the converter, and finally supplies power to the four antenna elements of the sub-array. The feeding structure of the invention is simple, and the substrate integrated waveguide with higher impedance is used as input, which simplifies the design of the sequence phase feeding network and realizes the miniaturization of the overall structure.
Description
[technical field] [0001] The invention relates to the technical field of antennas, in particular to a circularly polarized electromagnetic dipole array antenna. [Background technique] [0002] 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 substrate integ...
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IPC IPC(8): H01Q21/00H01Q21/06H01Q1/50
CPCH01Q1/50H01Q21/0037H01Q21/0068H01Q21/062
Inventor 冯波涛赖杰鑫
Owner 东莞市南斗星科技有限公司