Open AccessWideband circularly polarised horn antenna with large aspect ratio for terahertz applications
Author(s) -
Yu Haiyang,
Yu Junsheng,
Yao Yuan,
Liu Xiaoming,
Chen Xiaodong
Publication year - 2020
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2019.3051
Subject(s) - optics , wideband , horn antenna , antenna efficiency , axial ratio , physics , terahertz radiation , coaxial antenna , antenna measurement , radiation pattern , circular polarization , antenna (radio) , slot antenna , telecommunications , computer science , microstrip
This Letter proposes a circularly polarised horn antenna with large side length ratio. In virtue of 45° deflection structure and rectangular aperture with large aspect ratio, the proposed antenna achieves wideband circular polarisation radiation in small dimension. The fabrication is made on the prototype of the proposed antenna operating in the range of 220–320 GHz. Both of the measured circular polarisation bandwidth and impedance bandwidth of the designed antenna are 37% (220–320 GHz). This compact wideband circularly polarised antenna can be widely used in terahertz applications.