Broadband automotive radar microstrip patch antenna

• Main Authors: SHAN ZHIYONG, CHENG YUNPENG, LU SIWEI
• Format: Patent
• Language: Chinese; English
• Published: 03.05.2019
• Subjects: ANTENNAS, i.e. RADIO AERIALS; BASIC ELECTRIC ELEMENTS; ELECTRICITY

The invention provides a broadband automotive radar microstrip patch antenna. The broadband automotive radar microstrip patch antenna is formed by sequentially connecting a top radiation metal patch layer, an intermediate dielectric substrate and a bottom grounding plate metal patch layer. The top radiation metal patch layer is integrally square. Firstly, a square slot is dug out of an external square patch, and then two or more than two groups of nested patterns with round patches dug out are added into the square slot. Finally, a hexagonal patch with an equilateral triangle dug out is addedinto the center of the nested patterns. The bottom grounding plate metal patch layer is a combination of rectangular patches with different sizes. The frequency band range of the antenna is 22-60 GHz.The relative working bandwidth of the antenna is close to 100%, and the working bandwidth of the antenna completely covers a ka wave band and a U wave band. The working requirement in the radar frequency band range of automob