2D large beam inclination angle multibeam array antenna without beamforming network. Issue 6 (18th August 2019)

• Record Type: Journal Article
• Authors: Dou, Haipeng; Ma, Runbo; Han, Liping; Han, Guorui; Yang, Rongcao; Zhang, Wenmei
• Is Part Of: Electromagnetics. Volume 39:Issue 6(2019)
• Page Start: 453
• Page End: 463
• Publication Date: 2019-08-18
• Subjects: Array antenna -- multibeam -- beam inclination angle; Electromagnetism -- Periodicals; 537
• DOI: 10.1080/02726343.2019.1641659
• Languages: English
• ISSNs: 0272-6343

Abstract

ABSTRACT: A 2D multibeam array antenna without beamforming network is proposed in this paper. The antenna can radiate nine beams pointing to different directions in 2D space. By etching nine U-shaped slots on the ground plane, −10-dB impedance bandwidth is improved and beam inclination angles are enlarged. The measured results show that the antenna has a −10-dB impedance bandwidth of 7.5% (from 8.16 to 8.8 GHz). The inclination angles of the scanning beams are about ±36° (in the planes of φ = 0°, 45°, and −45°) and ±30° (in the plane of φ = 90°).