Wide Bandwidth Beam Rectangular Monopole Antenna

A monopole antenna, wide-bandwidth technology, applied in the direction of antenna and radiating element structure suitable for movable objects, can solve problems such as unfavorable active circuit integration, increase in size, etc., to improve circuit integration, reduce Radiation loss, easy processing effect

Inactive Publication Date: 2017-04-05
JINLIN MEDICAL COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A circular flat plate is used as the planar monopole antenna of the radiating part of the antenna perpendicular to the ground, and the coaxial line is used below to feed the antenna. The bottom of this type of antenna needs a conductor ground plate perpendicular to the antenna radiating plane, which increases the size. Not conducive to integration with active circuits

Method used

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  • Wide Bandwidth Beam Rectangular Monopole Antenna
  • Wide Bandwidth Beam Rectangular Monopole Antenna
  • Wide Bandwidth Beam Rectangular Monopole Antenna

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Embodiment Construction

[0011] The specific embodiment of the present invention is: as figure 1 As shown, the wide-beam broadband monopole rectangular antenna is composed of a rectangular conductor patch (1) printed on a dielectric substrate, a coplanar waveguide (2), an edge gradient structure floor (3) and an external coaxial connector (4 )composition. The lower end of the rectangular conductor patch (1) is smoothed and the bottom is slotted, and the coplanar waveguide (2) conduction strip is used as a feed source to excite the gap, and the lower end of the coplanar waveguide is connected to the inner conductor of the coaxial joint (4) , in order to externally connect the coaxial line, the gap between the ground plane at the lower end of the dielectric substrate and the coplanar waveguide is g=0.3mm, the edge gradient structure floor is printed on the lower end of the dielectric substrate, the edge is an exponential gradient structure, and the gradient form is y=e ax +b, where a is the gradient co...

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Abstract

The invention discloses a broadband wide-beam rectangular monopole antenna and relates to an onboard antenna with broadband wide-beam features. The monopole antenna comprises a rectangular pasting piece printed on a dielectric substrate, a coplanar waveguide and an edge gradual-change structure floor. Feeding is carried out in a coplanar waveguide mode. Radiation loss is lowered. The lower end of the rectangular conductor pasting piece is subjected to smoothing processing. Impedance matching is optimized. A groove is formed in the bottom of the pasting piece. The edge gradual-change structure floor is designed, and an antenna beam can be effectively widened. The antenna has the advantages of being small in size, simple in structure, convenient to machine, wide in beam, easy to integrate and the like, in a broadband, the width of the 1.5 dB beam of the antenna in a vertical face reaches 120 degrees, all-direction scanning is carried out in a horizontal plane, impedance bandwidth is 7.1 GHz-12.8 GHz, the maximum gain can reach 3.8 dB, the radiation features are stable, the requirement for the performance index of the onboard antenna is met, and the monopole antenna is suitable for being used as a conformal unit of the onboard antenna.

Description

technical field [0001] The present invention relates to an airborne antenna with wide-bandwidth beam characteristics, in particular to a coplanar waveguide-fed wide-bandwidth beam rectangular planar monopole antenna. In the wide-frequency band, the 1.5dB beam width of the antenna in the vertical plane reaches 120°. Omni-directional scanning in the horizontal plane, stable radiation characteristics, suitable for use as a conformal unit of an airborne antenna. Background technique [0002] With the rapid development of radar and communication systems, higher requirements are placed on the range of combat capabilities of airborne antennas. In addition to requiring broadband characteristics, wide-beam scanning must also be achieved, that is, omnidirectional radiation in the azimuth plane. It has a certain beam scanning range, stable directivity and antenna gain in the working frequency band, and sufficiently small return loss in the working frequency band. Biconical antennas, d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/28H01Q1/38
Inventor 欧仁侠王舒然陈洪斌霍旭阳祝颖鲍捷吴洁王艳玲齐秋菊李洪亮张光雷
Owner JINLIN MEDICAL COLLEGE
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