Hollow rod-wall waveguide slot array antenna based on 3D printing and metal coating

A metal coating and 3D printing technology, which is applied to slot antennas, antenna arrays that are energized separately, antennas, etc., can solve the problems of difficult surface plating of devices, affecting device performance, etc., to avoid dielectric loss, frequency bandwidth, and easy processing. Effect

CN109346851BActive Publication Date: 2021-01-19XIAMEN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2021-01-19

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Abstract

The invention provides a 3D printing- and metal plating layer-base hollow pole wall waveguide slot array antenna, and relates to a waveguide slot array antenna. A hollow plating layer hollow pole walllayer and a metal plating layer hollow pole wall waveguide feeding network layer are sequentially arranged from top to bottom, a resonant cavity is formed in the hollow plating layer hollow pole walllayer, the metal plating layer hollow pole wall waveguide feeding network layer is integrated with a feeding network, the feeding network comprises a T-shaped power allocator and an H-shaped power allocator which are cascaded, an input of the 3D printing- and metal plating layer-base hollow pole wall waveguide slot array antenna and the feeding network are connected by a main feeding part of the3D printing- and metal plating layer-base hollow pole wall waveguide slot array antenna, the feeding network and the resonant cavity are connected by a coupling gap, and the resonant cavity and a freespace are connected by a radiation gap. The characteristic of an antenna structure and the advantage of a processing technology brought by the structure are developed, the high-performance antenna which is easy to process and is low in loss, wide in frequency band and high in gain is achieved, and thus, the 3D printing- and metal plating layer-base hollow pole wall waveguide slot array antenna has wide application value.
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Description

technical field

[0001] The invention relates to a waveguide slot array antenna, in particular to a hollow rod-wall waveguide slot array antenna based on 3D printing and metal coating. Background technique

[0002] The waveguide slot array antenna has the characteristics of low dielectric loss and radiation loss, so it has high efficiency, compact structure, high power capacity, etc. It is easy to achieve wide frequency band, high gain, and low sidelobe performance, and is widely used in aerospace and radar communication systems Wait. It is a kind of aperture antenna formed by opening slender cracks on the waveguide wall according to certain rules, cutting off the current path on the waveguide wall, exciting the gap, and radiating electromagnetic waves transmitted in the waveguide to free space through the gap.

[0003] Common slots include inclined slots on the narrow side of the waveguide, transverse slots and longitudinal slots on the wide side of the waveguide, and incli...

Examples

Embodiment Construction

[0028]The following embodiments will further illustrate the present invention in conjunction with the accompanying drawings.

[0029] This embodiment is a hollow rod-wall waveguide slot array antenna based on 3D printing and metal coating. A 16×16 array element structure is selected, and a 2×2 array element structure is selected for the radiation sub-array. The array adopts a central back-fed feed with a center frequency of 61.5 GHz, and uses a fully parallel feed network to feed.

[0030] see figure 1 and 2 , the 16×16 antenna is composed of a metal-coated hollow rod-wall waveguide feeding network layer 2 and a metal-coated hollow rod-wall layer 3 containing a resonant cavity 4; the metal-coated hollow rod-wall waveguide feeding network layer 2 is integrated by a cascaded The feeding network composed of T and H-type power dividers, the input end 1 of the hollow rod-wall waveguide slot array antenna based on 3D printing and metal coating and the feeding network pass through...