Double-frequency high-gain microstrip slot antenna loaded with bowknot type parasitic structure

Abstract

A double-frequency high-gain microstrip slot antenna loaded with a bowknot type parasitic structure comprises a first dielectric substrate and a second dielectric substrate, two triangular parasitic structures are etched on the upper surface of the first dielectric substrate and are in rotational symmetry, and a rectangular metal patch is etched on the upper surface of the second dielectric substrate. A rectangular gap and a non-metal circular structure are etched on the lower surface of the second dielectric substrate, a feed via hole is formed in the rectangular metal patch, and the radius of the non-metal circular structure is larger than that of the feed via hole and coincides with the circle center of the feed via hole. Except for the rectangular gap and the non-metal circular structure, the lower surface of the second dielectric substrate is completely covered with metal to form an antenna grounding plate. According to the invention, the working frequency point of the antenna isexpanded by using a simple parasitic structure, the far-field radiation gain of the antenna is improved, and the characteristics of the microstrip slot antenna are greatly improved.

Description

technical field [0001] The invention belongs to the field of wireless communication, and relates to a dual-frequency high-gain microstrip slot antenna loaded with a bowknot parasitic structure. Background technique [0002] The antenna is one of the essential key components of the wireless mobile communication system, and the performance of the antenna has a crucial impact on the performance of the entire wireless communication system. After decades of exploration by researchers and engineers, there are already many types of antennas. There are parabolic antennas, planar antennas, horn antennas, monopole antennas, and more. Each antenna has its own advantages and disadvantages. In comparison, planar structure antennas have been widely used in wireless mobile communication systems due to their low-profile characteristics. At the same time, the antenna device has many properties, such as; far-field radiation pattern, far-field radiation gain, radiation efficiency, port para...

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a dual-frequency high-gain microstrip slot antenna with a bow-tie parasitic structure for the low-range radiation gain of the planar low-profile antenna and the single communication task. The metal parasitic patch radiation greatly improves the remote radiation gain of the antenna and expands the working frequency of the antenna

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