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Double-frequency and double-circularly-polarized antenna with substrate integration coaxial line feeding

A substrate-integrated, dual-circular polarization technology, which is applied in antenna unit combinations with different polarization directions, antenna coupling, etc., can solve the problem of high tail lobe of the antenna, and achieve the effect of small size, simple structure, and low design cost

Active Publication Date: 2014-07-16
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The energy leakage of the feed network will cause the tail lobe of the antenna to be high

Method used

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  • Double-frequency and double-circularly-polarized antenna with substrate integration coaxial line feeding
  • Double-frequency and double-circularly-polarized antenna with substrate integration coaxial line feeding
  • Double-frequency and double-circularly-polarized antenna with substrate integration coaxial line feeding

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Embodiment Construction

[0026] Below in conjunction with specific embodiment, further illustrate the present invention, should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various equivalent forms of the present invention All modifications fall within the scope defined by the appended claims of the present application.

[0027] The dual-frequency antenna includes a feed network layer composed of SICL transmission lines, a microstrip planar L-shaped probe, and a circular patch radiation unit. The feeding network of the antenna is processed by a printed circuit board (Printed Circuit Board, PCB) process.

[0028] figure 1 It is a schematic diagram of the circuit model of the stub line coupler in the feed network. If port1 in the figure is port 1 as the input port, then port3 or port 3 is the isolation port, and p...

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Abstract

The invention discloses a double-frequency and double-circularly-polarized antenna with substrate integration coaxial line feeding. The antenna mainly comprises a feeding network, a plane L-shaped probe and a radiation paster. The double-frequency and double-circularly-polarized antenna has the advantages of being low in feeding network loss, return loss and axial ratio, high in gain and polarization discrimination and the like in the frequency point where the double-frequency and double-circularly-polarized antenna works. The antenna can work at two needed frequency points by changing the feeding network and the size of the radiation paster.

Description

technical field [0001] The invention relates to a dual-frequency dual circularly polarized antenna fed by a substrate integrated coaxial line (Substrate Integrated Coaxial Line, SICL) with wide application prospects, belonging to the technical field of antennas. Background technique [0002] Antennas are an important part of wireless communication systems. With the rapid development of wireless communication, there is an urgent need for antennas with small size, low cost, high gain and easy integration. Microstrip antennas have the advantages of easy conformality, easy integration, easy access to circular polarization and dual-band multifunctional work. There are two feeding methods for circularly polarized antennas, namely single-feed method and double-feed method. Although the single-feed circularly polarized antenna has a simple structure, it is difficult to apply to broadband wireless communication due to its disadvantages such as narrow bandwidth. The double-fed circ...

Claims

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Application Information

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IPC IPC(8): H01Q21/24H01Q1/52
Inventor 王海明无奇余晨洪伟
Owner SOUTHEAST UNIV