High-efficiency broadband omnidirectional whip antenna

Abstract

The invention belongs to the technical field of mobile communication, and discloses a high-efficiency broadband omnidirectional whip antenna. The whip antenna comprises a dielectric substrate which islocated at the position of an interlayer of the antenna; an upper radiation oscillator which is disposed at the upper part of the front surface of the dielectric substrate in a manner of printing etching; a broadband adjustment branch node which is disposed at the center of the upper radiation oscillator in a manner of printing etching; a lower radiation oscillator which is disposed at the lowerpart of the front surface of the dielectric substrate in a manner of printing etching; feed transmission lines which are disposed on the front and back surfaces of the dielectric substrate in a mannerof printing etching, and are located at the center of the lower radiation oscillator, wherein the lower ends of the feed transmission lines extend to a feed connector, and the upper ends of the feedtransmission lines extend to the broadband adjustment branch node; the feed connector which is located at the lowermost part of the antenna, and is connected with the feed transmission lines. The upper radiation oscillator, the broadband adjustment branch node, the lower radiation oscillator and the feed transmission lines are disposed on the front and back surfaces of the dielectric substrate inan etched manner through the printing circuit technology. The whip antenna achieves the wide band and high efficiency, is simple in structure, is convenient to process, and is suitable for ultrashort-wave omnidirectional communication application.

Description

technical field [0001] The invention belongs to the technical field of mobile communication, in particular to a high-efficiency broadband omnidirectional whip antenna. Background technique [0002] Omnidirectional communication is the most widely used communication method at present, and it is used to realize wireless communication of moving targets within a certain coverage range. In order to realize the transmission and reception of omnidirectional electromagnetic waves, omnidirectional antennas are usually used as the transmitting antenna and receiving antenna. The omnidirectional antenna is vertically polarized relative to the reference ground, and its E-plane pattern is similar to an inverted "8" shape. The H-plane pattern is ideally a uniform circle, and the H-plane corresponds to the azimuth plane during communication. , Therefore, the gain in the H plane and the uniformity of the pattern determine the omnidirectional radiation characteristics of the omnidirectional ...

AI Technical Summary

Problems solved by technology

[0003] To sum up, the problems existing in the prior art are: the existing whip antenna has a long working wavelength, which causes the antenna diameter to be too large; the radiation efficiency of the antenna is obviously reduced

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