Design of a novel high gain dual-band common-aperture array antenna

• Main Authors: Qiao Xuguang, Jiang Zhaoneng, Zhao Xiaoyan, Shui Mingyue, Lu Xiaochi, Zhang Bangbang
• Format: Article
• Language: zho
• Published: National Computer System Engineering Research Institute of China 2019-02-01
• Series: Dianzi Jishu Yingyong
• Subjects: ultra-wideband(UWB); high gain; high polarization isolation; common-aperture antenna
• Online Access: http://www.chinaaet.com/article/3000097402

This paper presents a new ultra-wideband(UWB) high-gain dual-band common-aperture array antenna. The antenna consists of four T-shaped dual-polarized antennas, a 6×6 waveguide slot array antenna, and a circular metal substrate. The dual-polarized antenna operates from 2.33 to 12 GHz and uses a large metal Vivaldi antenna array that sits above the metal plate. The waveguide slot antenna array operates in the X-band with 9.8～10.3 GHz and is located below the metal plate. The dual-polarization antenna array and the waveguide slot antenna array are located in the same plane and separated by a circular metal plate, which can improve the space utilization and can effectively reduce the mutual coupling between the antennas and solve the problem of poor isolation effect of common-aperture antenna. This article uses HFSS software simulating, the simulation results show that the common- aperture antenna array has the advantages of high polarization isolation, ultra-wideband, high gain, high aperture efficiency, and is suitable for modern communication systems and electronic countermeasures.