Three-dimensional meandering substrate integrated waveguide near-field focusing standing wave slot array antenna

Abstract

The invention discloses a three-dimensional meandering substrate integrated waveguide near-field focusing standing wave slot array antenna. The overall shape of the antenna is a circular arc surface; There are metallized through holes on the layer, two rows of horizontal metallized through holes are used to form the substrate integrated waveguide, the vertical metallized through holes close one end of the two rows of horizontal metallized through holes to form a short circuit surface, and the upper metal copper clad layer There are radiation slots vertically penetrating the upper metal copper clad layer, and the radiation slots are arranged alternately on the upper and lower sides of the antenna center line; the invention actively conforms the substrate integrated waveguide to the meandering shape to break through the traditional plane amplitude and phase regulation The idea simplifies the design difficulty of the device, and realizes the near-field focusing aperture phase that the planar standing wave slot array antenna cannot satisfy by adjusting the longitudinal dimension, and realizes the near-field focusing of the substrate integrated waveguide standing wave slot array antenna.

Description

technical field [0001] The invention belongs to the field of near-field focusing, and in particular relates to a millimeter-wave three-dimensional meandering substrate integrated waveguide near-field focusing standing wave slot array antenna. Background technique [0002] Generally speaking, the antenna works in its radiation far-field area, but for some occasions, the energy radiated by the antenna is required to be concentrated on a specific point in its near-field area, which requires a near-field focusing antenna. The near-field focusing antenna can form a high-energy focus in the near-field region, thereby improving the resolution and imaging capabilities of the detection system. Therefore, near-field focusing antennas have broad application prospects and research value in the fields of microwave and millimeter wave imaging systems, wireless energy transmission systems, access control systems, radio frequency identification systems, and microwave radio systems. Differe...

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the above-mentioned substrate integrated waveguide near-field focusing standing wave slot array antenna design, because the standing wave slot array does not have the ability to freely adjust the phase, and cannot meet the phase requirements of the square-law change on the aperture surface of the near-field focusing antenna. As a result, the standing wave slot array cannot be used to achieve near-field focusing and shaping. Based on the concept of a three-dimensional meandering substrate integrated waveguide, a three-dimensional meandering substrate integrated waveguide standing wave slot array antenna structure is proposed. By designing the antenna The meandering shape makes full use of the longitudinal dimension to achieve the aperture phase distribution required for near-field focusing, thus solving the problem that the traditional planar standing wave slot antenna array cannot achieve near-field focusing

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