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Coplanar waveguide feed capacitor loading slot antenna

A waveguide feeding and capacitive loading technology, applied in slot antennas, antennas, and devices that make antennas work in different frequency bands at the same time, can solve the problem of large slot impedance, antenna cross-polarization deterioration, spectral efficiency and channel capacity decline. and other problems, to 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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  • Coplanar waveguide feed capacitor loading slot antenna

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Embodiment Construction

[0010] The present invention will be further described below in conjunction with drawings and embodiments.

[0011] The embodiment adopted in the present invention is: the coplanar waveguide feeding capacitively loaded slot antenna includes a dielectric substrate 1, a metal ground 2 and a radiation slot 3 arranged on the dielectric substrate 1, and a coplanar waveguide feeder 4; the dielectric substrate 1 One side is the metal ground 2 and the coplanar waveguide feeder 4, the ground plane 5 of the coplanar waveguide feeder 4 is the metal ground 2; 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 Located in the center of the metal ground 2; the two ends 6 of the radiation slot 3 are short-circuited; several capacitors 7 are connected in parallel across the two edges of the radiation slot 3, so that the characteristic impedance of the radiation slot 3 becomes lower; the coplanar waveguide feeder 4 One e...

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PUM

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Abstract

A slot antenna loaded with a coplanar waveguide feeding capacitance 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 coplanar waveguide feeder (4); radiation slots (3) are arranged on the metal ground (2); the two ends (6) of the radiation slots (3) are short-circuited; on the two edges of the radiation slots (3), there are several capacitors (7) The parallel connection is connected at its edge; one end of the coplanar waveguide feeder (4) is the port (8) of the antenna, and the conductor (9) at the other end of the coplanar waveguide feeder (4) crosses the radiation slot (3), and in the radiation slot The edge (10) of the seam (3) is connected with the metal ground (2). The antenna can reduce antenna size, cross polarization.

Description

technical field [0001] The invention relates to a slot antenna, in particular to a slot antenna loaded with a coplanar waveguide feeding capacitance. 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 o...

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 赵洪新杨亮殷晓星
Owner SOUTHEAST UNIV