A Broadband Low-Profile Filter Antenna Based on Metasurface Structure

A filter antenna, metasurface technology, applied in antennas, resonant antennas, electrical short antennas, etc., can solve the problems of reduced antenna gain, high antenna profile, loss, etc.

Active Publication Date: 2020-09-22
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the filter antenna has developed a variety of effective design concepts, but most filter antenna designs often use the antenna as the last stage of the filter design or add a filter structure to the feeder to achieve filter performance, which will make the Higher antenna profile, larger antenna size, or the introduction of additional losses lead to reduced antenna gain

Method used

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  • A Broadband Low-Profile Filter Antenna Based on Metasurface Structure
  • A Broadband Low-Profile Filter Antenna Based on Metasurface Structure
  • A Broadband Low-Profile Filter Antenna Based on Metasurface Structure

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Embodiment

[0030] Such as Figure 1-Figure 2(a) As shown in FIG. 2(b), the present invention provides a broadband low-profile filter antenna based on a metasurface structure. The antenna is side-fed by a microstrip line, and then the energy is coupled to the upper metasurface structure through a metal floor slit. The filter antenna is composed of two layers of PCB boards stacked together without distance. The two layers of PCB boards are specifically an upper layer PCB board 8 and a lower layer PCB board 9. The upper surface of the upper layer PCB board is printed with a radiation patch structure, so The radiation patch structure is composed of several metasurface units 1, parasitic patches and grounding vias 4. The structure is center-symmetrical. The parasitic patches include H-plane parasitic patches 2 and E-plane parasitic patches 3. The metasurface unit is composed of a square metal patch embedded with multiple folded U-shaped gaps. In this embodiment, there are four groups of metas...

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Abstract

The invention discloses a broadband low profile filter antenna based on a super surface structure. The antenna comprises an upper PCB and a lower PCB. A radiation patch structure is printed on the upper surface of the upper PCB, the radiation patch structure is formed by a plurality of super surface units and parasitic patches, and the parasitic patches are symmetrically arranged around the supersurface units. The upper surface of the lower PCB is provided with a metal floor, the lower surface of the metal floor is provided with a feeder structure, the metal floor is etched with a narrow slitand an opening ring slit, and the split ring slit is centrally symmetrical about the narrow slit. The antenna has the advantages of simple structure and easy processing.

Description

technical field [0001] The invention relates to a filter antenna, in particular to a broadband low-profile filter antenna based on a metasurface structure. Background technique [0002] With the continuous development of microwave devices, miniaturized design has always been the goal pursued by researchers. Whether in the military or civilian fields, the rapid development of miniaturized design has greatly promoted the miniaturization and portable development of wireless communication systems. . For RF front-end devices, due to a series of reasons such as its working principle, miniaturization design is relatively difficult compared with active circuits, but for multi-functional devices such as filter power splitters, filter antennas, etc., it provides a great opportunity for the miniaturization of microwave devices. new ideas. By integrating a variety of microwave devices such as filters, power splitters, and antennas into an integrated design, the size of the device can ...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): H01Q9/04H01Q1/38H01Q1/48H01Q1/50
CPCH01Q1/38H01Q1/48H01Q1/50H01Q9/0414H01Q9/0457
Inventor杨琬琛陈思车文荃薛泉廖绍伟张迎琪
OwnerSOUTH CHINA UNIV OF TECH