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Device for generating radio frequency quasi-Airy beam through utilization of antenna array

An antenna array and radio frequency technology, applied in diversity/multi-antenna systems, space transmit diversity, radio transmission systems, etc.

Inactive Publication Date: 2019-04-12
UNIV OF ELECTRONICS SCI & TECH OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This approach is of theoretical interest only, and it is limited to the use of dipole element antennas

Method used

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  • Device for generating radio frequency quasi-Airy beam through utilization of antenna array
  • Device for generating radio frequency quasi-Airy beam through utilization of antenna array
  • Device for generating radio frequency quasi-Airy beam through utilization of antenna array

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Embodiment Construction

[0022] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0023] The device of the present invention can be realized by a microwave / millimeter wave antenna array system, and in order to generate a target beam, each unit needs to be fed accurately. The feeding information of the array can be obtained by discretizing the Airy beam field (located at the initial position in the propagation direction). Finally, use the feed coefficient as the excitation coefficient of the adaptive array or design the feed network of the independent antenna array.

[0024] Such as figure 1 As shown, a device that uses an antenna array to generate radio frequency quasi-Airy beams includes a feeding network and multiple antenna units connected to the feeding network.

[0025] Further, the excitation coefficient w of the antenna unit n Airy function for each sampling point Sampling is obtained; among them, x 0 is the ho...

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Abstract

The invention discloses a device for generating a radio frequency quasi-Airy beam through utilization of an antenna array. The device for generating the radio frequency quasi-Airy beam through utilization of the antenna array comprises a feed network and a plurality of antenna units connected with the feed network. According to the device for generating the radio frequency quasi-Airy beam throughutilization of the antenna array provided by the invention, an independent antenna array or an adaptive antenna array can be selected as a transmitting device, each conventional antenna unit is fed precisely through utilization of the feed network, the beam is generated through utilization of the antenna array, and the beam has a transverse autoacceleration characteristic and an approximate diffraction-free characteristic in a certain propagation range, so it is considered that the quasi-Airy beam is generated.

Description

technical field [0001] The invention designs a device for generating a radio frequency quasi-Airy beam by using an antenna array. Background technique [0002] Forty years ago, the concept of non-diffraction and transverse self-accelerating beams first appeared in the field of quantum mechanics. In 2007, in order to generate paraxial beams in free space, taking into account the equivalence of the Schrödinger equation and the Helmhertz equation, A method for generating non-diffracting Airy beams is presented. In addition, the ideal Airy beam has two important properties: non-diffraction property and transverse self-acceleration property. However, an ideal Airy beam has infinite energy, so its physical realization is impossible. On the other hand, exponentially cut-off Airy beams have finite energy and are therefore physically realizable, and have been shown to have near-diffraction-free and transverse self-acceleration properties over relatively long propagation distances. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/06H04B7/08
CPCH04B7/0617H04B7/086
Inventor 文光俊殷丹杨钊胡伟黄勇军黄昌正
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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