Transceiving switch antenna array module for active millimeter wave imaging system

Abstract

The invention provides a transceiving switch antenna array module for an active millimeter wave imaging system. The transceiving switch antenna array module comprises a transmitting antenna array, a receiving antenna array, an isolation strip, a transmitting switch array and a receiving switch array; the transmitting antenna array, the receiving antenna array and the isolating strip are structurally integrated into a whole module, and comprise a 24-path transmitting antenna unit and a 24-path receiving antenna unit; the shape of the transmitting switch array and the structure of the receivingswitch array are consistent, wherein each of the transmitting switch array and the receiving switch array is provided with a 24-path transmitting channel and a 24-path receiving channel separately; the transmitting antenna array, the receiving antenna array, the transmitting switch array and the receiving switch array are fixedly assembled to form a radio frequency transceiving front-end basic function module; a power amplifier PA is arranged at the front stage of a single-pole three-throw switch SP3T in the transmitting switch array, and the saturation output power is 20 dBm; and a low-noiseamplifier LNA is arranged between a single-pole eight-throw switch SP8T and the single-pole three-throw switch SP3T in the receiving switch array.

Description

technical field [0001] The invention belongs to the technical field of array antennas, in particular to a transceiver switch antenna array module for an active millimeter wave imaging system. Background technique [0002] In recent years, the international and domestic security situation has become increasingly severe, and terrorist attacks against public places have occurred from time to time. In order to ensure the public safety of special places, it is an extremely effective way to conduct security checks on personnel through advanced equipment. Metal detection gates can quickly detect metal objects carried by the human body, but they are helpless for non-metallic objects such as ceramic knives, plastic pistols, liquid explosives, etc., and there are great potential safety hazards; X-ray security detectors have ionizing radiation and are not suitable Security inspection of the human body; body search is inefficient, requires multiple well-trained hand inspectors, and vio...

AI Technical Summary

Problems solved by technology

[0004] At present, the commonly designed active millimeter-wave imaging system generally adopts a continuous wave system with separate transceivers, with nearly 400 transmitting channels and receiving channels, and a large-scale array.

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