Ultra-wideband monopole patch antenna for partial discharge detection

A technology of partial discharge detection and patch antenna, which is applied in the direction of resonant antenna, antenna grounding device, antenna grounding switch structure connection, etc., can solve the problems of difficult impedance matching, complex process, large volume, etc., and achieve easy impedance matching and simple process , small size effect

Inactive Publication Date: 2019-09-24
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] In order to solve the shortcomings of traditional partial discharge antennas, such as the difficulty of impedance matching, the need to add additional impedance converters, complex proces

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  • Ultra-wideband monopole patch antenna for partial discharge detection
  • Ultra-wideband monopole patch antenna for partial discharge detection
  • Ultra-wideband monopole patch antenna for partial discharge detection

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[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] The specific structure of an ultra-wideband monopole patch antenna for partial discharge detection of the present invention is as follows:

[0023] like figure 1 As shown, a single-stage sub-patch 1 is arranged in the middle of the front of the square FR4 substrate 2, and one side of the single-stage sub-patch 1 is connected to the rectangular feeder 3; the other side of the feeder 3 extends to the edge of the FR4 substrate 2, and is connected to the edge of the FR4 substrate 2 SMA interface 5.

[0024] like figure 2 As shown, a rectangular metal floor 4 is provided on the side of the back of the FR4 substrate 2 close to the SMA interface 5 .

[0025] like image 3 As shown, the inner core 51 of the SMA interface 5 is connected to the monopole patch 1 , and the ground electrode 52 is connected to the floor 4 .

[0026] Pref...

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Abstract

The invention discloses an ultra-wideband monopole patch antenna for partial discharge detection, and the specific structure is that a monopole patch is arranged at the middle of the front surface of a square FR4 substrate, wherein one side of the monopole patch is connected with a rectangular feeder line, and the other side of the feeder line extends to the edge of the FR4 substrate and is connected with an SMA interface arranged at the edge of the FR4 substrate; a rectangular metal floor is arranged at one side, close to the SMA interface, of the back surface of the FR4 substrate; an inner core of the SMA interface is connected with the monopole patch, and a grounding electrode is connected with the floor. The antenna has the advantages that impedance matching is easy to realize, the process is simple, processing and production are easy, the antenna is easy to connect with mobile detection equipment by using an SMA interface for feeding, and the antenna can be more widely applied to actual production; the antenna can achieve the bandwidth of 0.5 GHz-1.57 GHz; more importantly, compared with other antennas with the same working bandwidth, the antenna is much smaller, thereby facilitating the practical application.

Description

technical field [0001] The invention belongs to the field of electrical equipment detection, and in particular relates to an ultra-wideband monopole patch antenna for partial discharge detection. Background technique [0002] Partial discharge is the main cause of insulation deterioration in electrical equipment, and it is also an important symptom. Detecting partial discharge of electrical equipment helps to judge the current insulation state of the equipment, and can be used for fault diagnosis and status evaluation of electrical equipment. When partial discharge occurs inside electrical equipment, it will be accompanied by the generation of ultra-high frequency (UHF) electromagnetic wave signals with a frequency of 0.3GHz-3GHz. The frequency band where the energy of the ultra-high frequency electromagnetic wave signal generated by partial discharge is concentrated is 0.5GHz-1.5GHz. The electromagnetic wave signal will propagate to the external space through the non-meta...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q1/48H01Q1/50H01Q9/40G01R31/12
CPCG01R31/1227H01Q1/38H01Q1/48H01Q1/50H01Q9/40
Inventor 吴广宁邢东方杨雁杨刚曹保江
Owner SOUTHWEST JIAOTONG UNIV
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