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- Title
Simple design of broadband circularly polarized two‐arm Archimedean spiral antenna.
- Authors
Tran, Huy Hung; Nguyen‐Trong, Nghia
- Abstract
This article presents a broadband circularly polarized two‐arm Archimedean spiral antenna with a novel simple feeding method. Contrary to the conventional spiral antenna excited by a vertically or horizontally balun, the presented design is directly fed by a coxial cable with a planar feeding section optimized to provide a broadband input impedance matching. An antenna prototype has been fabricated and measured to validate the concept. Measured results of reflection coefficient and axial ratio show a good performance over a frequency range from 1.0 to 3.5 GHz, equivalent to ~111.1%. Within this band, the antenna prototype exhibits bidirectional radiation with broadside gain values of better than 3.6 dBic.
- Subjects
SPIRAL antennas; BROADBAND antennas; IMPEDANCE matching; REFLECTANCE; ANTENNAS (Electronics)
- Publication
International Journal of RF & Microwave Computer-Aided Engineering, 2019, Vol 29, Issue 9, pN.PAG
- ISSN
1096-4290
- Publication type
Article
- DOI
10.1002/mmce.21813