A compact OAM antenna for generating CP radiation patterns of three modes by using half‐mode SIWs. Issue 2 (10th September 2020)

• Record Type: Journal Article
• Authors: Hu, Jun; Qiu, Tong‐Tong; Wu, Wen; Zhao, Run‐Zhe; Qian, Song‐Song
• Is Part Of: Microwave and optical technology letters. Volume 63:Issue 2(2021)
• Page Start: 612
• Page End: 619
• Publication Date: 2020-09-10
• Subjects: circularly polarized pattern -- compact antenna -- dark region -- half‐mode substrate integrated waveguide -- OAM wave -- three modes; Microwaves -- Periodicals; Optics -- Periodicals; 621
• DOI: 10.1002/mop.32635
• Languages: English
• ISSNs: 0895-2477

Abstract

Abstract: Based on a uniformly sequential rotational array, this study proposes a compact orbital angular momentum (OAM) antenna, for generating circularly polarized radiation patterns of three modes. The antenna consists of four half‐mode substrate integrated waveguides and has a diameter of one wavelength in free space. Both the simulation and the measurement results show that the proposed antenna can generate ±1 OAM modes with circularly polarized radiation patterns with a gain of 9.2 dBi. The antenna can also generate 0 OAM mode with a conic radiation pattern with a gain of 7.0 dBi. The compact OAM antenna with three modes can be applied in multiplex systems with strict requirements on aperture dimensions.