An Ultra-Wideband Quaternary Array Antenna Device for Through-Wall Imaging Radar

Abstract

The invention discloses an ultra wide band quaternary array antenna apparatus used for a through-wall imaging radar. The antenna apparatus comprises a medium unit, an antenna unit, a parallel double-line feed unit, a reflection cavity and a connector. The antenna unit is printed on the bottom surface of the medium unit. The antenna unit is composed of a plurality of water-drop-shaped antenna arms. The parallel double-line feed unit comprises a first parallel double-line and a second parallel double-line which are X-shaped and which are respectively arranged on the upper surface and the lower surface of the medium unit. Terminals, approaching the antenna arms, of the parallel double-line separate according to index gradual changes, and are respectively connected with the corresponding antenna arms. A central point of the two parallel double-lines are connected with the connector through upper and lower end bonding pads. The reflection cavity is fixed with the edge of the medium unit and covers the antenna unit. One end of the connector is connected with the parallel double-line feed unit. The other end penetrates outside the refection cavity via a through hole in the middle of the reflection cavity and is fixed on the reflection cavity. The antenna apparatus of the present invention can be directly connected with a transmit-receive module through the connector, and the antenna apparatus has relatively good orientated radiation capability and broadband characteristics.

Description

technical field

[0001] The present invention relates to an antenna arrangement for a through-wall imaging radar system. Background technique

[0002] Through-wall imaging technology is a fast imaging method that does not need to destroy the wall, has good resolution and penetration depth, and can perform non-invasive detection and imaging of targets hidden behind walls. In recent years, through-wall imaging detection technology has received more and more attention, especially in the fields of anti-terrorism, technical investigation, military, search and rescue, etc., which has great application value.

[0003] my country's research on through-wall imaging technology started relatively late. At present, some domestic universities and scientific research institutions have carried out some useful explorations in this field and are basically in the stage of laboratory prototypes.

[0004] At present, the through-wall imaging radar systems that are widely used in China are basic...

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