Open AccessDevelopment of inductive‐loaded ultra‐wideband monopole antennas from stepped‐impedance resonators
Author(s) -
Asokan Hefilia,
Gopalakrishnan Srivatsun
Publication year - 2020
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2019.0802
Subject(s) - monopole antenna , antenna (radio) , resonator , electrical impedance , acoustics , strips , electrical length , transmission line , impedance matching , electrical engineering , magnetic monopole , materials science , physics , dipole antenna , optoelectronics , engineering , slot antenna , quantum mechanics , composite material
An ultra‐wideband (UWB) printed monopole antenna is designed from stepped‐impedance resonator (SIR) geometry. An inductor which is loaded in series between the radiating strips combines the multiple resonance bands of a two‐strip stepped‐impedance printed monopole antenna into a single ultra‐wide resonance band. The two‐strip inductive‐loaded stepped‐impedance printed monopole antenna is theoretically analysed for its resonant frequencies with the proposed modified transmission line analysis of inductive‐loaded SIR model. The proposed analysis is validated by comparing the resonances with the electromagnetic simulation results and real‐time measured results from the fabricated prototype of the antenna. The prototype of the two‐strip inductive‐loaded stepped‐impedance printed monopole antenna fabricated on the low‐cost FR4 substrate, resonated for the ultra‐wide frequency range from 2.58 to 10 GHz.