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High gain microstrip antenna based on air gap

A technology of microstrip antenna and air gap, which is applied in the direction of antenna coupling, antenna grounding device, antenna grounding switch structure connection, etc., can solve the problems of microstrip antenna, such as large volume, high cost, and low radiation efficiency, and achieve easy array formation, Good directivity and high radiation efficiency

Inactive Publication Date: 2017-01-04
SUN YAT SEN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, due to the defects of large volume, high cost, and low radiation efficiency of the traditional microstrip antenna, it is limited in many applications.

Method used

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  • High gain microstrip antenna based on air gap
  • High gain microstrip antenna based on air gap
  • High gain microstrip antenna based on air gap

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Such as figure 1 , 2 As shown, the high-gain microstrip antenna based on the air gap 6 includes a floor 1, a radiating plate 2, a pillar 4 and a coaxially fed SMA head 5, wherein the floor 1 and the radiating plate 2 are arranged in parallel, and the distance between the floor 1 and the radiating plate 2 is There is a gap as an air gap 6 between them, and the floor 1 is connected to the radiation board 2 through the pillar 4; the probe 3 of the coaxially fed SMA head passes through the floor 1 and connects to the radiation board 2.

[0031] Wherein, the transverse section of the floor 1 is square, its length is 18.5 mm, its width is 18.5 mm, and the thickness of the floor 1 is 0.8 mm; the transverse section of the radiation plate 2 is circular, its radius is 5.9 mm, and Plate 2 has a thickness of 0.25 mm. The center of the floor 1 is aligned with the center of the radiation plate 2; the microstrip receiving antenna includes four pillars 4, such as figure 1 As shown, ...

Embodiment 2

[0036] This embodiment has carried out concrete experiment to the microstrip antenna that embodiment 1 provides, and its experimental result is as follows image 3 , 4 , 5 shown.

[0037] Such as image 3 As shown, the microstrip antenna provided by Embodiment 1 has an optimal reflection coefficient S near the resonant frequency 5.8GHz 11 =-24.5dB.

[0038] Such as Figure 4 As shown, the gain of the microstrip antenna provided by Embodiment 1 near the resonant frequency of 5.8 GHz is Gain=8.4 dB. The frequency band from 5.6GHz to 5.9GHz is the common ISM frequency band of MPT technology. In this frequency band, the gain of the microstrip antenna is about 7.8dB to 8.4dB.

[0039] Such as Figure 5 as shown, Figure 5 It is the radiation efficiency curve of the microstrip antenna in different frequency bands. The frequency band from 5.6 GHz to 5.9 GHz is a common frequency band for MPT technology. In this frequency band, the radiation efficiency of the microstrip antenn...

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PUM

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Abstract

The invention relates to a high gain microstrip antenna based on an air gap. The high gain microstrip antenna comprises a floor, a radiation board, a supporting column and a coaxial feed SMA head, wherein the floor and the radiation board are parallelly arranged, a space reserved between the floor and the radiation board is taken as the air gap, the floor is connected with the radiation board through the insulation supporting column, and a probe of the coaxial feed SMA head penetrates through the floor and is connected with the radiation board.

Description

technical field [0001] The present invention relates to the field of wireless energy transmission, and more specifically, to an air gap-based high-gain microstrip antenna. Background technique [0002] Microwave Power Transmission (MPT, Microwave Power Transmission) is a transmission technology that uses microwaves as carriers for energy transmission in vacuum or free space. Since Nikola Tesla conducted wireless power transmission experiments in 1890, and W.C.Brown of Raytheon Company engaged in a large number of researches on wireless power transmission in the 1960s, MPT technology has received more and more attention and has been gradually applied to energy harvesting, radio frequency Identification and wireless sensing and other fields. [0003] Antenna is a conversion device or transducer device between guided waves and free space waves. Antenna is an essential component of any wireless system, and as one of the core parts of MPT system, microstrip antenna has always b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/36H01Q1/38H01Q1/52H01Q1/48H01Q1/50
CPCH01Q1/36H01Q1/38H01Q1/48H01Q1/50H01Q1/52
Inventor 谭洪舟付超区俊辉吴宙真
Owner SUN YAT SEN UNIV
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