Open AccessWideband frequency reconfigurable Koch snowflake fractal antenna
Author(s) -
Choukiker Yogesh Kumar,
Behera Santanu Kumar
Publication year - 2017
Publication title -
iet microwaves, antennas and propagation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.555
H-Index - 69
eISSN - 1751-8733
pISSN - 1751-8725
DOI - 10.1049/iet-map.2016.0238
Subject(s) - fractal antenna , wideband , reconfigurable antenna , antenna tuner , koch snowflake , radio spectrum , frequency band , ultra high frequency , antenna (radio) , antenna measurement , acoustics , electronic engineering , physics , dipole antenna , electrical engineering , coaxial antenna , antenna factor , engineering , telecommunications
In this study, a Koch snowflake frequency reconfigurable antenna for wideband applications is presented including experimental verification. The frequency reconfigurable approach is obtained for UHF band using RF PIN diodes, lumped capacitor and inductors. Proposed antenna is compact, therefore, it can be used as an array element. It has three measured frequency bands. These bands are: case I, 3.34– 4.52 GHz (30%); case II, 2.2–3.4 GHz (43%); and case III, 1.45–4.1 GHz (95.49%). In cases I and II, two different bands are obtained and case III covers almost the frequency band of case I and case II. Thus, the impedance bandwidth of the proposed antenna provides continuous wideband frequency coverage from 1.45 to 4.52 GHz (103%). In addition, the measurements are carried out to validate the performance of the antenna. The proposed antenna has good agreement between simulated and measured results with reasonably low cross polarisation.