Three-layer metal plate based broadband transmission array antenna
A metal plate and broadband transmission technology, which is applied in the direction of antenna, antenna array, radiation element structure, etc., can solve the problems of narrow working bandwidth, small gain bandwidth, and difficult antenna processing, so as to reduce processing difficulty, expand gain bandwidth and The effect of operating bandwidth
Active Publication Date: 2016-10-26
NAT SPACE SCI CENT CAS
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Problems solved by technology
[0004] The purpose of the present invention is to solve the defects that the existing broadband transmission array antenna is difficult to process, the 1dB gain bandwidth is less than 10%, and the working bandwidth is relatively narrow. The present invention provides a broadband transmission array based on a three-layer metal plate The antenna includes three layers of metal plates, the layers of the metal plates are in a parallel relationship, the metal plates of each layer are etched with a plurality of finger-shaped slot units, and the plurality of finger-shaped The slot units are arranged at equal intervals on each layer of the metal plate, wherein the finger-shaped slot units sequentially include: a first longitudinal slot, a second longitudinal slot, a third longitudinal slot, a fourth longitudinal slot, and the fifth longitudinal slit, the first longitudinal slit, the second longitudinal slit, the third longitudinal slit, the fourth longitudinal slit and the fifth longitudinal slit are parallel to each other, and about the first The three longitudinal slots are distributed symmetrically; the finger-shaped slot unit also includes a first transverse slot, the first transverse slot is vertical and passes through the first longitudinal slot, the second longitudinal slot, and the third longitudinal slot slots, the fourth longitudinal slot and the fifth longitudinal slot
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[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings.
[0021] As shown in Fig. 1 (a), 1 (b), 2 and 6, the present invention provides a kind of broadband transmission array antenna based on three-layer metal plate, comprises three-layer metal plate, the layer and layer of described metal plate The metal plates of each layer are etched with a plurality of finger-shaped gap units with a unit size of 12mm×12mm, and the plurality of finger-shaped gap units are arranged at equal intervals on the metal plate. On each layer of the flat plate, wherein, the finger-shaped slit unit includes from left to right: a first longitudinal slit, a second longitudinal slit, a third longitudinal slit, a fourth longitudinal slit and a fifth longitudinal slit, the first A longitudinal slit, the second longitudinal slit, the third longitudinal slit, the fourth longitudinal slit and the fifth longitudinal slit are parallel to each other a...
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The present invention provides a three-layer metal plate based broadband transmission array antenna comprising a three-layer metal plate; the layers of the plate are in parallel to each other; each layer is etched with a plurality of finger type slot units that are arranged at equal intervals on each layer of the metal plate. Each finger-type slot unit sequentially comprises a first longitudinal slot, a second longitudinal slot, a third longitudinal slot, a fourth longitudinal slot, and a fifth longitudinal slot; the first longitudinal slot, the second longitudinal slot, the third longitudinal slot, the fourth longitudinal slot, and the fifth longitudinal slot are parallel to each other. Of the five slots, divided equally by the third longitudinal slot, the left two longitudinal slots are symmetrical with the right two longitudinal slots. The finger-type slot unit further comprises a first transverse slot that is perpendicular to and across the first longitudinal slot, the second longitudinal slot, the third longitudinal slot, the fourth longitudinal slot, and the fifth longitudinal slot.
Description
technical field [0001] The invention relates to the technical field of antennas, in particular to a broadband transmission array antenna based on a three-layer metal flat plate. Background technique [0002] Antennas are widely used in radio systems such as communications, broadcasting, television, radar, and navigation. They play the role of spreading radio waves and are an essential device for effectively radiating and receiving radio waves. Among them, the array antenna is a special antenna in which not less than two antenna elements are arranged regularly or randomly and are properly excited to obtain predetermined radiation characteristics. [0003] At present, the existing transmission array antenna generally includes two parts: the feed source and the transmission array. By designing the transmission phase of each unit in the transmission array and performing phase compensation on the spherical wave radiated by the feed source, the Spherical waves are converted to pl...
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IPC IPC(8): H01Q1/36H01Q21/00H01Q13/00
CPCH01Q1/36H01Q13/00H01Q21/00
Inventor 刘广王宏建易敏刘洋薛飞
Owner NAT SPACE SCI CENT CAS