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Miniaturized low profile ultra-wideband logarithmic periodic monopole array antenna

A technology of logarithmic periodical and array antennas, applied in logarithmic periodical antennas, antennas, antenna arrays, etc., can solve problems such as the influence of airborne antenna radiation performance

Active Publication Date: 2018-10-19
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The complex electromagnetic environment on the airborne platform and the physical structure of the airframe itself will affect the radiation performance of the airborne antenna. An isolated antenna with good radiation performance will often deteriorate to varying degrees on the airborne platform.

Method used

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  • Miniaturized low profile ultra-wideband logarithmic periodic monopole array antenna
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  • Miniaturized low profile ultra-wideband logarithmic periodic monopole array antenna

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Embodiment Construction

[0021] specific implementation plan

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiment is only one embodiment of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0023] First determine the working frequency band of the antenna, and select the appropriate frequency band division according to the logarithmic periodic monopole theory, such as figure 1 As shown, this figure is a three-dimensional structure diagram of a miniaturized low-profile ultra-wideband logarithmic periodic monopole array antenna provided by an embodiment of the present invention. The antenna works at 1-10.7GHz, and the...

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Abstract

The invention discloses a miniaturized low profile ultra-wideband logarithmic periodic monopole array antenna, which is characterized by using 22 monopoles operating at different frequencies to realize ultra-wideband characteristics. A radiation directional pattern is directed to the end-fire direction of an array. Part of the monopoles introduce a capacitor to reduce the profile of the overall cell by loading a plate capacitor to the top end; and a substrate with a higher dielectric constant is used to miniaturize a feeding line and the overall structure. The invention can satisfy the standing wave ratio VSWR (2.5, the height of the profile is 0.053 Lambda <l>, and the width is 0.061 Lambda <l> in the bandwidth range of 10.7:1, wherein the Lambda <l> is the wavelength corresponding to thelowest frequency point in the free space. The invention has the advantages that the vertical polarization end-fire directional pattern can be stably realized in the ultra-wideband range, and has thecharacteristics of low profile, compact structure, easy conformality and simple design. The design method and the result can provide theoretical guidance and performance evaluation methods for an airborne platform antenna unit and array, and can provide a new idea for solving conformal antennas on metal body platforms.

Description

technical field [0001] The invention belongs to the technical field of antenna engineering, and relates to a miniaturized low-profile ultra-wideband logarithmic periodic monopole array antenna, specifically an array composed of multiple monopoles loaded in different forms to realize ultra-wideband Vertically polarized end-fire performance antenna featuring low profile and miniaturization. It can be used in the fields of radar detection and wireless communication, is easy to install on the surface of a metal platform to achieve conformality, and can be flexibly used in wireless communication systems with different forms of signal coverage requirements. Background technique [0002] With the continuous development of information technology and modern military technology, end-fire antennas, as an important part of radar and communication systems, are increasingly used in different occasions. Air supremacy has a very important role and significance. [0003] For array antennas...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q1/50H01Q11/10H01Q21/00
CPCH01Q1/38H01Q1/50H01Q11/10H01Q21/00H01Q21/0075
Inventor 陈益凯何欢杨仕文黎皓天刘国高尚伟
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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