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High-efficiency substrate-integrated waveguide leaky-wave slot array antenna for near-field two-dimensional focusing

A substrate-integrated waveguide and leaky-wave antenna technology, which is applied in directions such as antenna arrays, antennas, and antenna arrays that are energized separately, can solve the problems of large polarization loss, complex feeding, and low radiation efficiency, and achieve high-efficiency two-dimensional Focusing, overcoming the complexity of feeding, avoiding the effect of near-field stray radiation

Active Publication Date: 2020-11-27
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problems of complex feeding, large polarization loss, and low radiation efficiency existing in the above-mentioned existing near-field two-dimensional focusing antenna technical solutions

Method used

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  • High-efficiency substrate-integrated waveguide leaky-wave slot array antenna for near-field two-dimensional focusing
  • High-efficiency substrate-integrated waveguide leaky-wave slot array antenna for near-field two-dimensional focusing
  • High-efficiency substrate-integrated waveguide leaky-wave slot array antenna for near-field two-dimensional focusing

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Embodiment Construction

[0035] Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail:

[0036] In this embodiment, a high-efficiency substrate-integrated waveguide leaky-wave slot array antenna for near-field two-dimensional focusing is firstly provided.

[0037] figure 1 and figure 2 A schematic diagram of the structure of the high-efficiency substrate-integrated waveguide leaky-wave slot array antenna for near-field two-dimensional focusing is given. image 3A schematic diagram of the antenna structure of the single-substrate integrated waveguide leaky wave slot array (with different widths on the left and right sides) in the antenna array is given.

[0038] The antenna includes an antenna array composed of several single substrate integrated waveguide leaky-wave slot array antennas arranged in parallel, the first leaky-wave antenna 11 feeding external energy is located at the transverse center of the antenna array, and the first leaky...

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Abstract

The invention provides a high-efficiency substrate integrated waveguide leaky-wave slot array antenna for near-field two-dimensional focusing, which is an antenna array composed of several single leaky-wave antennas arranged in parallel; the left and right sides of a single leaky-wave antenna have different widths. Etc., each leaky-wave antenna is provided with a slot parallel to the transverse centerline of the antenna array, and the spacing between adjacent slots of each antenna is different; Connection; The array topology structure of the opposite direction feeding of adjacent single leaky-wave antennas proposed by the present invention realizes the natural symmetry of the near-field two-dimensional focusing antenna, and at the same time makes the width of the single leaky-wave antennas have complementary characteristics, and adjusts the left and right sides The width of the gap is relatively uniform, and the high-efficiency two-dimensional focusing under the simple series feed structure is realized through the first connection of the adjacent leaky-wave antennas fed in the opposite direction, which overcomes the existing near-field two-dimensional focusing antenna technical scheme. There are problems such as complex feeding, large polarization loss, and low radiation efficiency.

Description

technical field [0001] The invention belongs to the field of near-field focusing antennas, and in particular relates to a high-efficiency substrate integrated waveguide leaky-wave slot array antenna for near-field two-dimensional focusing of millimeter waves. Background technique [0002] With the wide application of near-field focusing antennas in the fields of microwave and millimeter wave imaging, wireless power transmission, access control and radio frequency identification, the requirements for antenna efficiency and two-dimensional focusing capabilities are getting higher and higher. Different from the far-field antenna array, the near-field focused antenna array has higher requirements on the phase and amplitude control capabilities of the transmission structure, and needs to produce a square-law-changing aperture phase distribution and a balanced radiation energy distribution, which puts forward higher requirements for antenna design. . [0003] As a commonly used a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q21/06H01Q21/00
CPCH01Q21/0006H01Q21/064
Inventor 程钰间吴亚飞黄子轩樊勇宋开军林先其张波
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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