Double-layer butterfly antenna

A butterfly antenna, double-layer technology, applied in the field of partial discharge UHF detection, can solve the problems of small area of ​​butterfly antenna, limited electromagnetic wave signal, poor sensitivity, etc., achieve good signal reception ability, expand low frequency bandwidth, and expand antenna bandwidth. Effect

Pending Publication Date: 2019-06-21
SOUTHWEST JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a double-layer butterfly antenna to solve the problem that the existing butterfly antenna has a small area, limited electromagnetic wave signals received, narrow bandwidth in the UHF frequency band, and poor sensitivity

Method used

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Embodiment

[0025] See Figure 1 to Figure 2 , The present invention includes a dielectric substrate, a first butterfly patch 2 provided on the upper surface of the dielectric substrate, and a second butterfly patch 3 provided on the lower surface of the dielectric substrate, the first butterfly patch 2 and the second butterfly patch Sheet 3 is symmetrical in the center. The material used for the dielectric substrate is an epoxy resin dielectric plate, and the relative permittivity of the dielectric substrate is 4.4, the length of the dielectric substrate is 74 mm, the width of the dielectric substrate is 34 mm, and the thickness of the dielectric substrate is 1.6 mm. The material of the first butterfly patch 2 is copper, and the material of the second butterfly patch 3 is also copper. In the present invention, the first butterfly patch 2 and the first microstrip line 4 are connected and then etched on the upper surface of the dielectric substrate, and the second butterfly patch 3 is conn...

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Abstract

The invention discloses a double-layer butterfly antenna and belongs to the field of local discharge UHF detection technologies. The double-layer butterfly antenna comprises a dielectric substrate, afirst butterfly patch arranged on the upper surface of the dielectric substrate and a second butterfly patch arranged on the lower surface of the dielectric substrate, wherein a first microstrip lineconnected with the first butterfly patch is arranged in the middle of the upper surface of the dielectric substrate, a second microstrip line is arranged in the middle of the lower surface of the dielectric substrate, the two ends of the second microstrip line are connected with the second butterfly patch and the first microstrip line respectively, the first microstrip line and the second microstrip line are etched on the upper surface of the dielectric substrate and the lower surface of the dielectric substrate respectively, the two ends of the first butterfly patch are provided with notchesrespectively, and the two ends of the second butterfly patch are provided with notches respectively. Through the double-layer butterfly antenna, on the premise of guaranteeing antenna miniaturization,more electromagnetic wave signals can be received, and the detection sensitivity and anti-interference capability of a UHF detection system are improved.

Description

Technical field [0001] The invention relates to the technical field of partial discharge UHF detection, in particular to a double-layer butterfly antenna. Background technique [0002] Partial discharge is the cause of the insulation deterioration of power equipment and a sign of its further deterioration. Therefore, the occurrence and location of partial discharge can be detected in time, and it is particularly important to avoid accidents. As one of the partial discharge detection methods, the ultra-high frequency method detects the ultra-high frequency electromagnetic wave signal radiated by the partial discharge. It has the advantages of strong anti-interference, high sensitivity, and can identify the type of fault and locate the fault. Widely used. [0003] The UHF antenna sensor is the core part of the UHF detection system, and its performance directly determines the quality of the detection effect. The butterfly antenna can be considered as a planarized deformation of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/36H01Q1/48H01Q1/50
Inventor 张健穹王婵李相强胡与朋陈俊峰万家辉李昊宇
Owner SOUTHWEST JIAOTONG UNIV
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