Coplanar waveguide fed broadband ultra-surface antenna

A coplanar waveguide and metasurface technology, which is applied to antenna arrays, antennas, slot antennas and other directions that are energized separately. It can solve problems such as narrow impedance bandwidth and achieve the effect of improved impedance bandwidth, good side-fire characteristics, and low-profile design.

Inactive Publication Date: 2019-03-12
SOUTHWEST JIAOTONG UNIV
View PDF2 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for many practical applications, the impedance bandwidth of these designs is still relatively narrow, so it is necessary to further greatly increase the resonant bandwidth of metasurface antennas.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Coplanar waveguide fed broadband ultra-surface antenna
  • Coplanar waveguide fed broadband ultra-surface antenna
  • Coplanar waveguide fed broadband ultra-surface antenna

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] The technical solution of the present invention will be further described in detail below in conjunction with specific embodiments and accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0033] In a specific embodiment, a broadband metasurface antenna fed by a coplanar waveguide, the side view is as figure 1As shown, the improvement of the impedance bandwidth can be realized while ensuring a good radiation front-to-back ratio and low-profile performance (the relative bandwidth of the center is 51.2%), including the first dielectric substrate 1, the second dielectric substrate 2, the third dielectric substrate 3, The electromagnetic metasurface part, the excitation layer part and the short-circuit reflective floor part, the first dielectric substrate 1, the second dielectric substrate 2, and the third dielectric substrate 3 are arranged in sequence from top to bottom, and the electromagnetic metasurface p...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to the technical field of microwave antennas, in particular to a coplanar waveguide fed broadband ultra-surface antenna, which comprises a first dielectric substrate, a second dielectric substrate, a third dielectric substrate, an electromagnetic ultra-surface part, an excitation layer part and a short-circuit reflecting floor part. Antenna radiation is achieved by using thegap of the ultra-surface, and good broadside characteristic is achieved; a micro-strip loaded butterfly-shaped fed gap is used for coupling excitation of the ultra-surface, thereby successfully exciting three resonant modes in the ultra-surface; the relative midbandwidth reaches 51.2%; compared with the ultra-surface antenna before, the impedance bandwidth is greatly improved; the short-circuit reflecting floor structure is used in the invention so that not only backward radiation suppression of the antenna is realized but also a low-profile design is finished. The coplanar waveguide fed broadband ultra-surface antenna in the invention realizes the broadband radiation bandwidth performance and good radiation characteristic of the planar antenna and can effectively enhance the performance of the antenna in a radar, imaging, wireless communication and other systems.

Description

technical field [0001] The invention relates to the technical field of microwave antennas, in particular to a broadband metasurface antenna fed by a coplanar waveguide. Background technique [0002] In radar, imaging, and wireless communication systems, microstrip antennas play an important role due to their low cost, low profile, reliable performance, and ease of processing and integration. However, the application of the traditional microstrip antenna is often limited by its narrow impedance bandwidth, and the relative bandwidth of the general microstrip antenna is lower than 10%. In the past few decades, a large number of technologies have been proposed to broaden the impedance bandwidth of microstrip antennas. In summary, there are mainly capacitive probe feeding technology, L-shaped probe feeding technology, aperture coupling technology, U-shaped / E Shaped slot technology and stacked chip technology. These technologies can generally increase the relative bandwidth of t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H01Q1/38H01Q1/48H01Q1/50H01Q21/06H01Q15/00H01Q13/10
CPCH01Q1/38H01Q1/48H01Q1/50H01Q13/10H01Q15/0013H01Q21/065
Inventor 程友峰丁霄廖成
Owner SOUTHWEST JIAOTONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap