A directly radiated media lens and its application in the micro-wave near field detection

A dielectric lens, microwave detection technology, applied in electromagnetic field characteristics, antennas, electrical components and other directions, can solve problems such as small delay, short signal propagation time, and undetectable
CN1996664AInactive Publication Date: 2007-07-11EAST CHINA NORMAL UNIV
0 Cites 6 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
EAST CHINA NORMAL UNIV
Publication Date
2007-07-11
Estimated Expiration
Not applicable Β· inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

This invention relates to one direct medium lens and its application in microwave detection, whose radio medium lens is composed of several dielectric parameters with equal difference change films for one to n between antenna and test objects. This invention method comprises the following steps: setting two different structure medium lens C and C'between antenna radiation surface A and test object with each lens composed of n pieces of medium slices C1-Cn and C'1-C'n with equal dielectric difference.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a microwave near-field detection technology, in particular to a direct-ray dielectric lens and its application in microwave detection. technical background

[0002] In the application of near-field imaging, as well as point-to-point, point-to-multipoint wireless communication and other high-end application technologies, the system usually requires higher antenna gain. However, the gain of an antenna formed by a single antenna element is hardly higher than 20dBi. In order to improve the antenna gain, the main beam can be focused according to the principle of optical refraction: when the light passes through the optical lens, the light will converge or diverge; this principle is applied to the propagation of electromagnetic waves, and the concept of the dielectric lens is obtained: when the electromagnetic wave passes through the dielectric lens When , the main beam will be effectively focused to increase antenna gain.

[0003] ...

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