A dual-frequency ebg structure and a microstrip antenna based on the dual-frequency ebg structure

A microstrip patch antenna and antenna radiation technology, which is applied in the direction of antenna grounding switch structure connection, antenna, antenna grounding device, etc., can solve the problems of low radiation efficiency, narrow bandwidth of microstrip antenna, large back radiation, etc., and achieve improvement Radiation ratio before and after, improvement of working bandwidth, and effect of suppressing surface waves

Active Publication Date: 2020-12-11
EAST CHINA JIAOTONG UNIVERSITY
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  • Claims
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Problems solved by technology

[0005] Therefore, in order to solve the above problems, the present invention provides a dual-frequency EBG structure and a microstrip antenna based on the dual-frequency EBG structure, which solves the problems of traditional microstrip antennas with narrow bandwidth, low radiation efficiency, and large back radiation

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  • A dual-frequency ebg structure and a microstrip antenna based on the dual-frequency ebg structure
  • A dual-frequency ebg structure and a microstrip antenna based on the dual-frequency ebg structure
  • A dual-frequency ebg structure and a microstrip antenna based on the dual-frequency ebg structure

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Embodiment Construction

[0023] In order to deepen the understanding of the present invention, the present invention will be further described below in conjunction with the embodiments and accompanying drawings. The embodiments are only used to explain the present invention and do not constitute a limitation to the protection scope of the present invention.

[0024] like figure 1 and image 3 As shown, a microstrip antenna based on a dual-frequency EBG structure, including a microstrip patch antenna and a 3-layer dual-frequency EBG structure loaded around the microstrip patch antenna (belonging to a high-impedance surface, the most basic structure is a Mushroom type , the top is a metal patch, the bottom is a metal ground plate, and a metal via is punched on the dielectric substrate, and the metal via connects the top metal patch and the bottom ground plate.)

[0025] The dual-frequency EBG structure provided by the present invention is slotted on the metal patch of the Mushroom structure, that is, f...

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Abstract

The invention discloses a dual-frequency EBG structure, which comprises a metal grounding plate, a dielectric substrate, a plurality of EBG metal patches arranged periodically and conductive via holes, and the EBG metal patches and metal grounding plates are respectively located on the upper and lower surfaces of the dielectric substrate , the conductive via hole is set in the center of the EBG metal patch to connect the EBG metal patch and the metal grounding plate, and the four surrounding edges of the EBG metal patch are etched with four rectangular slots symmetrically distributed about the center of the EBG metal patch and four four One-third circular groove. A microstrip antenna based on a dual-frequency EBG structure, including a microstrip patch antenna and a dual-frequency EBG structure with the above structure loaded around it, the microstrip patch antenna is located on the upper surface of a dielectric substrate and the antenna radiation patch it uses Two symmetrical rectangular slots and C-shaped bent branch slots are etched on the chip. By loading the EBG structure around the microstrip antenna, the surface wave of the antenna is suppressed, the working bandwidth of the antenna is improved, the gain of the antenna is increased, and the back radiation of the antenna is reduced.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, in particular to a dual-frequency EBG structure and a microstrip antenna based on the dual-frequency EBG structure. Background technique [0002] Wireless communication technology (Wireless Communication Technology, WCT) is a communication method that uses the characteristics that electromagnetic wave signals can propagate in free space for information exchange. The wireless communication realized in moving is also called mobile communication, and people collectively refer to the two as wireless mobile communication. Wireless communications include microwave communications and satellite communications. Microwave is a kind of radio wave, and its transmission distance is generally only tens of kilometers, but the frequency band of microwave is very wide, and the communication capacity is large. Microwave communication needs to establish a microwave relay station every tens of kilome...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/36H01Q1/48H01Q1/50H01Q5/314
CPCH01Q1/36H01Q1/48H01Q1/50H01Q5/314
Inventor 张晓燕马海涛展爱云刘志伟喻易强
Owner EAST CHINA JIAOTONG UNIVERSITY
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