Ultra-wideband planar focusing lens antenna and design and imaging method thereof

A technology of focusing lens and design method, which is applied to antennas, devices that make antennas work in different bands at the same time, electrical components, etc., can solve problems such as complex data processing, poor plane integration, and narrow antenna frequency bands, and achieve high imaging resolution. efficiency, avoiding high loss, and good focal spot size consistency

Pending Publication Date: 2022-04-26
XIDIAN UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In the field of ultra-wideband microwave imaging, in order to overcome the problems of narrow frequency band of the focusing array antenna, complex data processing, large volume and poor plane integration caused by the focal surface of the spherical Lunberg lens antenna, the present invention proposes an ultra-wideband planar Focusing lens antenna and its imaging method, through the quasi-conformal

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
  • Ultra-wideband planar focusing lens antenna and design and imaging method thereof
  • Ultra-wideband planar focusing lens antenna and design and imaging method thereof
  • Ultra-wideband planar focusing lens antenna and design and imaging method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

[0036] The quasi-conformal transformation refers to the quasi-conformal transformation of the standard Lunberg lens. The core idea is coordinate transformation, which changes the size of the transformation space at the cost of changing the electromagnetic parameters of the transformation space. Quasi-conformal transformation combines the advantages of optical transformation and conformal transformation. Star...

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 an ultra-wideband planar focusing lens antenna and a design and imaging method thereof, and belongs to the field of lens antennas and optical imaging. The method comprises the following steps: performing quasi-conformal transformation on a ball luneberg lens, performing reasonable discretization on a transformed non-uniform dielectric constant, analyzing the influence of different discretization conditions on a focal spot and an angular resolution in a broadband, determining the optimal discretization of the dielectric constant, and realizing high-resolution imaging on a focal plane in the broadband. The system has high imaging resolution of real-time imaging in a wide-angle range, when plane waves in different directions are incident in an imaging range of +/-30 degrees, the size consistency of 3dB focal spots imaged on a focal plane is good, and a real-time imaging structure is simple.

Description

technical field [0001] The invention belongs to the field of lens antenna and optical imaging, in particular to a lens antenna with ultra-broadband and planar focus and its ultra-broadband high-resolution imaging method. The focal spot characteristics and angular resolution of the lens antenna when incoming waves from different directions are incident. The results show that the lens antenna has a focal spot of 36.8 mm to 4.6 mm and an angular resolution of 20 degrees to 2.5 degrees in the ultra-wideband. Background technique [0002] The near-field focusing antenna is the main component of the microwave imaging system. High-quality passive imaging requires the focusing antenna to have narrow beam, high gain, high efficiency and low sidelobe characteristics. At the same time, it is required that the beams can be densely arranged and maintain good beam uniformity. . In the imaging system, focal spot and angular resolution are two important index parameters: when a plane wave ...

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): H01Q19/06H01Q15/08H01Q5/25
CPCH01Q19/06H01Q5/25H01Q15/08
Inventor 雷娟张宏伟黄磊孔玉陈士举
Owner XIDIAN 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