Design and Realization of airborne four-fed stacked antenna based on the third generation of Beidou

• Published in: International Conference on Measuring Technology and Mechatronics Automation (Print) pp. 475 - 478
• Main Authors: Zhang, Yiming, Wang, Xinwei, Zhang, Hexin
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01.01.2022
• Subjects: Antenna feeds; Antenna measurements; Bandwidth; Beidou third generation; four-point feed; microstrip antenna; Microstrip antennas; Navigation; Satellite antennas; satellite navigation; Software; zero phase center
• ISSN: 2157-1481
• DOI: 10.1109/ICMTMA54903.2022.00100

Based on the third-generation Beidou satellite navigation system, this paper proposes and design a quad-fed dual circularly polarized stacked microstrip antenna which operating frequency include B1I(1561.098±2.046MHz),B1C(1575.42±16.368MHz),B2a(1176.45±10.23MHz),B2b(1207.14z±10.23MHz),S(2491.75±8.1 6MHz),L(1614.26±4.08MHz,1615.68±4.08MHz,1618.34±4.0 8MHz,1624.524±1.6376MHz).The antenna adopts four-point central symmetrical feeding combined with a feed network designed by a 3dB bridge and a microstrip phase shifter to achieve dual circular polarization and zero-phase center characteristics. The size of the antenna structure is obtained by simulation software and processed and tested. The results show that the gain of the antenna RNSS part above 75° elevation angle does not exceed 4dBic, and the gain below 5° elevation angle is not less than -7.5dBic. The average polarization gain of the RDSS part at 10° elevation angle is not less than -9 dBic, the out-of-roundness of the polarization gain at 10° elevation angle is not more than 4 dB, and the axial ratio in all operating frequency bands is not more than 3 dB. Meet the requirements of airborne navigation antennas.