High-gain wide-frequency band omni antenna

Abstract

The invention provides a high-gain wide-frequency band omni antenna. The omni antenna mainly comprises a main feed cable (14), a double-cone shaped reflector, two slot antennas (10, 15), a feed network (9) and a support structure, wherein the main feed cable (14) enters into a lower reflector (6) through a lower fixed base (2) and is directly connected with the feed network (9), and the feed network (9) feeds the first slot antenna (10) and the second slot antenna (15) respectively through a first feed cable (11) and a second feed cable (12). The omni antenna is characterized by high gain, wide bandwidth, high radiation efficiency and ability of realizing no-blind-zone coverage, and can be extensively applied in cellular coverage and mobile communication.

Description

technical field [0001] The invention relates to an omnidirectional antenna. Specifically, it is a high-gain broadband omnidirectional antenna for transmitting and receiving radio signals in all communication networks in the field of mobile communication. Background technique [0002] Since radio communication equipment and electronic information equipment are developing toward multi-functionality, miniaturization, ultra-wideband, and friendly coordination with the surrounding environment, this makes broadband, miniaturization, and high gain one of the hot research topics at home and abroad. It involves the broadband impedance matching technology of the antenna, the loading technology of the antenna, the reactance compensation technology of the antenna, the optimized design of the small antenna shape and other advanced technologies and processes. At the same time, solve some shortcomings of the existing antenna: (1) At present, the gain of the antenna is required to be relat...

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Problems solved by technology

At the same time, solve some shortcomings of the existing antenna: (1) At present, the gain of the antenna is required to be relatively high, for example, a gain of 6-9dBi is required, and most of the existing antennas are dipole antennas and monopole antenna arrays, and the direction diagram is up and down. Equal, so a part of the electric wave is consumed, so once a ratio is lower

The current antennas cannot meet the current communication needs, especially the dual-band broadband high-gain antennas cannot meet the requirements

(4) Most of the current cell coverage and beautification antennas use monopole antennas and dipole antennas, and it is difficult to control the frequency band. At the same time, in order to make full use of existing resources and adapt to the needs of different environments, the antenna design is required to be flexible. Can meet the needs of different occasions

Moreover, the products developed are all directional antenna products. Although there are a few broadband omnidirectional antenna products, they are complex in structure, cumbersome in design, poor in versatility, high in processing cost, and have certain defects in performance, so they are not suitable for promotion. Cell coverage has caused certain difficulties, so the development of multi-band, miniaturized, simple structure, flexible design, and low-cost broadband omnidirectional antenna is the top priority of today's research

[0003] The master's thesis (University of Electronic Science and Technology of China, 2007) entitled "Design and Research of Horizontally Polarized Omnidirectional (High Gain) Communication Antenna" mainly involves the analysis and research of array antennas such as coaxial and waveguide slot antennas to achieve high gain The design of the antenna, the bandwidth of the antenna used is relatively narrow, which cannot meet the needs of broadband communication; the master's thesis titled "Design of Two Types of Broadband Omnidirectional Antennas" (Xidian University, 2008) mainly involves two The analysis of this kind of antenna, the main design is an improved biconical antenna; the Chinese patent application numbers are 200720044568.9, 200520079193, 200420078206.8, 200810156045 and other patent documents mainly designed in the form of sleeve antenna and array antenna

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