24GHz automobile radar array antenna

• Main Authors: CHEN HUIBIN, YANG GUANGSONG, HUANG CHANGBIN, XING HAITAO, MA ZHONGHUA, ZHENG JIACHUN
• Format: Patent
• Language: Chinese; English
• Published: 02.02.2018
• Subjects: ANTENNAS, i.e. RADIO AERIALS; BASIC ELECTRIC ELEMENTS; ELECTRICITY

The invention discloses a 24GHz automobile radar array antenna. The automobile radar array antenna comprises a conductive pattern layer on the upper layer, a dielectric layer in the middle layer and conductor ground on the bottom layer; the conductive pattern layer comprises a feed network and four SIR unit linear arrays, wherein the feed network consists of three one-into-two power distributors and three pairs of microstrip line impedance conversion networks; each single SIR linear array comprises four pairs of symmetrical step impedance microstrip lines; and four multi-stage step impedance microstrip line array units form the antenna array. The automobile radar array antenna can be applied to the current automobile anti-collision radar driving system, so that automobile driving safety performance is improved, and traffic accidents are reduced; and the array antenna adopts the multi-stage step impedance microstrip line structure, and is high in gain, narrow in wave beam, simple in structure and low in cost.