Dual-polarization printed slot antenna with compact structure

A compact and slot antenna technology, which is applied in the field of dual-polarization slot antennas and dual-polarization printed slot antennas, can solve the problems of large antenna size and complex structure

Inactive Publication Date: 2018-07-06
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Most of the above-mentioned related dual-polarized antennas use narrow gaps to completely separate the ports to achieve good port isolation. The antennas are large in size and complex in structure.

Method used

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  • Dual-polarization printed slot antenna with compact structure
  • Dual-polarization printed slot antenna with compact structure
  • Dual-polarization printed slot antenna with compact structure

Examples

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Embodiment 1

[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0023] see figure 1 , the embodiment of the present invention includes a dielectric substrate 1, the upper surface of the dielectric substrate 1 is coated with a metal good conductor layer; on the upper surface of the metal layer, one side of the long side of the dielectric substrate 1 is provided with a horizontal rectangular slit arm 2, a first vertical rectangular slit The arm 3 and the second vertical rectangular slit arm 4 are provided with a first elongated slit 5 and a second elongated slit 6 on the other side of the long side of the medium substrate 1; the center line of the narrow side of the horizontal rectangular slit arm 2 Coincident with the midline of the long side of the dielectric substrate 1; the first vertical rectangular slit arm 3 is connected to the first elongated slit 5, and the second vertical rectangular slit arm 4 is ...

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Abstract

The invention discloses a dual-polarization printed slot antenna with a compact structure, which belongs to the technical field of antennas. The dual-polarization printed slot antenna with a compact structure is composed of a rectangular dielectric substrate and a metal good conductor layer applied to the upper surface, wherein a horizontal rectangular slot arm, a first vertical rectangular slot arm, a second vertical rectangular slot arm, a first long strip-shaped slot and a second long strip-shaped slot are etched on the upper surface of the metal good conductor layer, and the etching depthis equal to the thickness of the metal good conductor layer; the median of the narrow side of the horizontal rectangular slot arm is coincident with that of the long side of the rectangular dielectricsubstrate, and one narrow side of the horizontal rectangular slot arm is coincident with the long side of the rectangular dielectric substrate. Two ports of the antenna have high isolation characteristics, and in a working band, the port isolation is greater than 27dB; the radiation field of the antenna with two ports also has high polarization purity and can reach 34 dB; and the antenna is suitable for small base station MIMO systems such as a narrow block or a tunnel.

Description

technical field [0001] The invention belongs to the technical field of antennas, in particular to a dual-polarization slot antenna used in a MIMO system, in particular to a compact dual-polarization printed slot antenna. Background technique [0002] Due to its low profile, planar dual-polarized antennas are widely used in polarization diversity and multiple-input multiple-output (MIMO) systems, which require two-port antennas with high polarization purity and port Isolation [Svantesson T, Jensen M A, Wallace J W. Analysis of electromagnetic field polarizations in multiantenna systems [J]. IEEE Transactions on Wireless Communications, 2004, 3(2): 641-646.]. Commonly used dual-polarized planar antennas include microstrip patch antennas and microstrip slot antennas. Microstrip patch antennas have unidirectional radiation characteristics, while microstrip slot antennas have bidirectional radiation characteristics. [0003] Microstrip slot antennas are mostly processed by micro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/24H01Q1/38H01Q1/50H01Q1/52
CPCH01Q1/38H01Q1/50H01Q1/52H01Q15/24
Inventor 李德辉王宝续郑伟高强朱建斌李伟文
Owner JILIN UNIV
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