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Coaxial feed metal through hole stepped-impedance half slot antenna

A technology of step impedance and metal vias, 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 cross-polarization of antennas, 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

AI Technical Summary

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 in spectral efficiency and channel capacity
At the same time, the impedance of the slot is very large, which also makes the impedance matching of the slot antenna feeding transmission line more difficult.

Method used

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  • Coaxial feed metal through hole stepped-impedance half slot antenna

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with drawings and embodiments.

[0015] The embodiment adopted in the present invention is: the half-slot antenna of coaxial feeding metal via hole step impedance comprises a dielectric substrate 1, a metal ground 2 arranged on the dielectric substrate 1, a radiation slot 3, and a coaxial feeder 4; the dielectric substrate 1 One side is the metal ground 2, the outer conductor 5 of the coaxial feeder 4 is connected to the metal ground 2; there is a radiation slot 3 on the metal ground 2, the shape of the radiation slot 3 is rectangular, and the radiation slot 3 is located on the metal ground 2 one end of the radiation slot 3 is short-circuited, and the other end 6 is open; in the part of the radiation slot 3 close to the open end, there are two rows of metallized via holes 7 arrays on the two edges of the slot, so that the radiation slot 3 The characteristic impedance of the part near the open end becom...

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Abstract

The half-slot antenna with coaxial feeding metal via hole step impedance relates to a slot antenna, which includes a dielectric substrate (1), a metal ground (2) on the dielectric substrate (1), a radiation slot (3), and a coaxial feeder (4); there is a radiation slot (3) on the metal ground (2); one end of the radiation slot (3) is short-circuited, and the other end (6) is open; there are two rows of metal wires near the open end of the radiation slot (3). The low-resistance slot (8) is formed by the via hole (7) array; the rest of the radiation slot (3) is a high-resistance slot (9), and the outer conductor (5) of the coaxial feeder (4) is connected to the metal ground (2 ), the inner conductor (12) at the end of the coaxial feeder (4) straddles the high-resistance slot (9) at its edge (11), and connects with the metal ground (2). The antenna is multi-band operation which reduces antenna size, cross-polarization, shadowing and improves isolation.

Description

technical field [0001] The invention relates to a slot antenna, in particular to a half-slot antenna with step impedance of a coaxial feeding metal via hole. 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 imp...

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 赵洪新谢力殷晓星
Owner SOUTHEAST UNIV
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