Array antenna structure and multilayer via-hole structure

Abstract

The invention discloses an array antenna structure, which comprises a radiation unit and a feed network. The radiation unit adopts a plane patch form; the feed network adopts a substrate integrated waveguide form; the overall structure is realized through multilayer printed circuit board technology; and the feed network is characterized by providing a transverse seam in the broad side of the bentsubstrate integrated waveguide, and carrying out feeding on a top metal patch through seam coupling. The invention also discloses a multilayer via-hole structure, which is characterized by closing oneport of the substrate integrated waveguide on some layer of dielectric substrate, and using one plated through hole to transmit radio-frequency signals. Such array antenna structure adopts the bent substrate integrated waveguide transverse seam structure, increases the bandwidth of the array antenna under the condition of realizing a thin dielectric substrate through matching design of the feed network, and realizes that a millimeter wave antenna and a radio frequency front end are on different layers of a multilayer printed circuit board to meet design of a millimeter-wave system having higher requirements for size and width.

Description

technical field [0001] The invention belongs to the field of electronics, and in particular relates to an array antenna structure and a multilayer through-hole transfer structure. Background technique [0002] With the progress of society and the development of technology, the demand for high performance and miniaturization of electronic systems is becoming increasingly urgent. Array antennas are widely used in electronic systems in many fields such as communication, navigation, radar, and detection, and can achieve high performance. The miniaturized array antenna structure will inevitably bring good economic and social benefits. [0003] The microstrip patch antenna is a planar array antenna structure that has developed rapidly in recent decades. It is widely used in various radio application scenarios due to its compact structure, light weight, low cost, and easy integration. When forming an array with a patch antenna, especially when the array is formed to a certain scal...

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Problems solved by technology

[0008] Therefore, the current array antennas with related structures still have problems such as uncompact structure, high profile, narrow bandwidth, etc., and the RF front-end is connected to the antenna in the millimeter-wave RF system using a multi-layer printed circuit board.

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