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Low-Profile Wideband Spiral Antenna With a Circular HIS Reflector Composed of Homogenous Fan-Shaped Patch Elements.
- Source :
-
IEEE Transactions on Antennas & Propagation . Oct2020, Vol. 68 Issue 10, p7219-7222. 4p. - Publication Year :
- 2020
-
Abstract
- A low-profile spiral antenna backed by a circular high-impedance surface (HIS) reflector composed of homogeneous (CirHISRhomo) fan-shaped patch elements is investigated. The total antenna height from the bottom of the CirHISRhomo to the spiral antenna is very small: 0.09 wavelength at a lowest design frequency of 3 GHz. It is revealed that the CirHISRhomo contributes to a constant input impedance and a small axial ratio (AR) across the design frequency range of 3–10 GHz (the fractional bandwidth is approximately 108%). For comparison, the AR for the spiral antenna backed by a conventional perfect electric conducting reflector is also presented. The analysis results are verified by the measured results of the fabricated antenna. [ABSTRACT FROM AUTHOR]
- Subjects :
- *SPIRAL antennas
*REFLECTOR antennas
*BROADBAND antennas
*ANTENNAS (Electronics)
Subjects
Details
- Language :
- English
- ISSN :
- 0018926X
- Volume :
- 68
- Issue :
- 10
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Antennas & Propagation
- Publication Type :
- Academic Journal
- Accession number :
- 146359334
- Full Text :
- https://doi.org/10.1109/TAP.2020.2980365