Metal through hole stepped-impedance half-slot antenna

A step impedance, half-slot antenna technology, applied to antennas, slot antennas, and devices that enable antennas to work in different bands at the same time, can solve the problems of large slot impedance, poor antenna cross-polarization, spectral efficiency and channel capacity Reduce the problem, achieve the effect of miniaturization, suppression of cross polarization, and reduction of electrical size

Inactive Publication Date: 2016-08-10
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

A larger metal ground will make the slot antenna unsuitable for multiple-input multiple-output (MIMO) applications, resulting in poor cross-polarization of the antenna, which will lead to a decrease...

Method used

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  • Metal through hole stepped-impedance half-slot antenna

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with drawings and embodiments.

[0016] The embodiment that the present invention adopts is: the half-slot antenna of metal via hole step impedance comprises dielectric substrate 1, the metal ground 2 that is arranged on dielectric substrate 1 and radiation slot 3, microstrip feeder 4; One side of dielectric substrate 1 is metal Ground 2, the other side of the dielectric substrate 1 is the conduction band 5 of the microstrip feeder 4; there is a radiation slot 3 on the metal ground 2, the shape of the radiation slot 3 is a rectangle, and the radiation slot 3 is located at the center of the metal ground 2; One end of the slot 3 is short-circuited, and the other end 6 is open-circuited; at the part of the radiation slot 3 close to the open-circuit end, there are two rows of metallized via hole 7 arrays on the two edges of the slot, so that the characteristics of the part of the radiation slot 3 close to t...

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PUM

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Abstract

The invention discloses a metal through hole stepped-impedance half-slot antenna which comprises a medium substrate (1), a metal ground (2) and a radiation slot seam (3) on the medium substrate (1), and a microstrip feed line (4). The radiation slot seam (3) is arranged on the metal ground (2). One end of the radiation slot seam (3) is designed as a short circuit while the other end (6) an open circuit. A low impedance slot seam (8) is formed by two rows of metal through hole (7) arrays near the end of the radiation slot seam with the open circuit. The rest part of the radiation slot seam (3) is a high impedance slot seam (9). One end of the microstrip feed line (4) is an antenna port (10) and the open circuit at the other end of the microstrip feed line (4) crosses the high impedance slot seam (9) and extends a certain amount of lengths. The antenna of the invention can work with multiple bands. With reduced size, the antenna achieves cross polarization. Well blocked, an improved isolation effect can be achieved as well.

Description

technical field [0001] The invention relates to a slot antenna, in particular to a half-slot antenna with metal via hole step impedance. Background technique [0002] The slot antenna is the dual antenna of the dipole antenna and has a wide range of applications. However, the ordinary slot antenna not only needs half the wavelength of the radiation slot itself, but also needs a large metal ground area around the radiation slot, usually the length of the metal ground is 1 / 2 larger than the length of the slot One wavelength, the width of the metal ground is one-half wavelength larger than the width of the slot. A larger metal ground will make the slot antenna unsuitable for multiple-input multiple-output (MIMO) applications, resulting in poor cross-polarization of the antenna, which will lead to a decrease in spectral efficiency and channel capacity. At the same time, the impedance of the slot is very large, which also makes it difficult to match the impedance of the slot an...

Claims

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Application Information

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IPC IPC(8): H01Q13/10H01Q1/38H01Q5/10H01Q5/335H01Q5/328
CPCH01Q13/10H01Q1/38H01Q5/10H01Q5/328H01Q5/335
Inventor 殷晓星谢力赵洪新
Owner SOUTHEAST UNIV
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