Capacitor loaded semi-groove antenna

A half-slot antenna and capacitive loading technology, which is applied in the direction of antenna, slot antenna, antenna grounding device, etc., can solve the problems of large slot impedance, poor cross-polarization of antenna, decrease of spectral efficiency and channel capacity, etc., and achieve small The effects of polarization, suppression of cross polarization, and reduction in electrical size

Inactive Publication Date: 2016-07-27
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

Method used

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  • Capacitor loaded semi-groove antenna

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Embodiment Construction

[0011] The present invention will be further described below in conjunction with drawings and embodiments.

[0012] The embodiment adopted in the present invention is: the capacitively loaded half-slot antenna includes a dielectric substrate 1, a metal ground 2, a radiation slot 3, and a microstrip feeder 4 arranged on the dielectric substrate 1; one side of the dielectric substrate 1 is a 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 rectangular, and the radiation slot 3 is located in the center of the metal ground 2; the radiation slot One end of the slot 3 is short-circuited, and the other end 6 is open; in the radiation slot 3, the part 8 intersecting with the microstrip feeder 4 is removed, and several capacitors 7 are connected in parallel across the two edges of the radiation slot 3, so that the radiation slot 3 The ...

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PUM

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Abstract

The capacitively loaded half-slot antenna relates to a slot antenna, which includes a dielectric substrate (1), a metal ground (2) on the dielectric substrate (1), a radiation slot (3), a microstrip feeder line (4); the metal ground (2) There is a radiation slot (3); one end of the radiation slot (3) is short-circuited, and the other end (6) is open; remove the part (8) intersecting with the microstrip feeder line (4) at the radiation slot (3) ), there are several capacitors (7) connected in parallel across its edge; one end of the microstrip feeder (4) is the antenna port (10), and the other end of the microstrip feeder (4) is open and crosses the radiation slot (3) and stretch for a length. The antenna reduces antenna size, cross polarization, shadowing and improves isolation.

Description

technical field [0001] The invention relates to a slot antenna, in particular to a capacitance-loaded half-slot antenna. 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 antenna feeding tr...

Claims

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Application Information

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IPC IPC(8): H01Q13/10H01Q1/48H01Q5/10H01Q5/314
CPCH01Q13/106H01Q1/48H01Q5/10H01Q5/321
Inventor 殷晓星史俊赵洪新
Owner SOUTHEAST UNIV
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