Coaxial crack omnidirectional antenna

Abstract

The invention relates to a coaxial crack omnidirectional antenna comprising a choke flow unit, a radiation unit and an impedance transformation unit, wherein the radiation unit is located between thechoke flow unit and the impedance transformation unit, the choke flow unit is fixedly connected with the radiation unit through a first segment of inner conductor, and the radiation unit is fixedly connected with the impedance transformation unit through a third segment of inner conductor; a radiant port is provided between the choke flow unit and the radiation unit, a radiant port II is providedbetween the radiation unit and the impedance transformation unit, and a feed port is formed in one end part of the choke flow unit away from the radiation unit; a section of the first segment of innerconductor penetrates through the choke flow unit, and the other section of the first segment of inner conductor is located in the radiation unit and is fixedly connected with the radiation unit; andone section of the third segment of inner conductor penetrates through the impedance transformation unit, and the other section of the third segment of inner conductor is located in the radiation unitand is fixedly connected with the radiation unit. The amplitude and phase of each radiation port of the antenna provided by the invention are the same, so that the antenna gain can reach a higher value, and the working performance of the antenna is improved.

Description

technical field [0001] The invention belongs to the field of communication system design, and in particular relates to a coaxial slot omnidirectional antenna. Background technique [0002] As an electronic device for transmitting and receiving electromagnetic waves, the antenna is an important part of the radar antenna feeder system. In some communication system fields, in order to achieve omnidirectional coverage of signals, omnidirectional antennas are required. [0003] Most of the traditional omnidirectional antennas use monopole or dipole antennas and their deformation forms. Most of the omnidirectional antennas of the coaxial feeder type are CTS (Coaxial Transverse Stub) antennas, but the feeding method of CTS antennas is generally serial This will cause the radiated power on each unit to show a decreasing trend, making it difficult to achieve high gain. Contents of the invention [0004] According to the problems existing in the prior art, the present invention pr...

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Problems solved by technology

[0003] Most of the traditional omnidirectional antennas use monopole or dipole antennas and their deformed forms. Most of the omnidirectional antennas of the coaxial feeder type are CTS (Coaxial Transverse Stub) antennas, but the feeding method of CTS antennas is generally serial Feed, this will cause the radiated power on each unit to show a decreasing trend, making it difficult to achieve a high gain

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