Broad-axial-ratio-beam antenna loaded by single dielectric

Abstract

The invention discloses a broad-axial-ratio-beam antenna loaded by a single dielectric, comprising a loading dielectric and a circularly polarized patch antenna. The loading dielectric comprises a dielectric block and an air cavity formed by hollowing the bottom surface. The circularly polarized patch antenna comprises a circular patch, a first dielectric plate, a floor, a second dielectric plateand a single-frequency feed network arranged in turn from top to bottom. The single-frequency feed network comprises a single-frequency branch line coupler, a feed probe, a grounding short circuit pinand a matching resistor. Because a loading dielectric design of a special structure is adopted, the traditional circularly polarized patch antenna achieves a good axial ratio beam broadening effect.In addition, the antenna has the advantages of simple structure, stable gain and small size, and is very suitable for wide application and promotion.

Description

technical field [0001] The invention relates to the field of wide-axis ratio beam antennas, in particular to a wide-axis ratio beam antenna loaded by a single medium. Background technique [0002] With the steady improvement of the world's economic level, people's demand for the development of wireless communication systems is getting higher and higher. However, the propagation of electromagnetic signals in space is subject to more and more interference, which poses a great challenge to the stability of wireless communication systems. For example, in radio frequency identification systems, satellite navigation communication systems and wireless transmission systems, the handheld devices and airborne devices are often in constant movement. At this time, the base station antenna often needs to receive or send electromagnetic signals in a wide range to Achieve uninterrupted communication. As an important part of modern wireless communication systems, circularly polarized ante...

AI Technical Summary

Problems solved by technology

Although there are many research results on single-bandwidth axis-ratio beam circular polarization technology, none of the existing research has achieved ideal results. Often, the axis-ratio beam of the antenna is broadened, but the structure complexity, processing difficulty and application The cost is greatly increased, and the performance of many indicators is often not available at the same time, which limits its wide application in low-cost wireless communication systems

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