Open AccessHigher mode‐based wideband antenna design using an engineered cylindrical dielectric resonator
Author(s) -
Gupta Poulomi,
Guha Debatosh,
Kumar Chandrakanta
Publication year - 2020
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.2019.0605
Subject(s) - dielectric resonator antenna , wideband , dielectric resonator , resonator , bandwidth (computing) , mode (computer interface) , modal , dielectric , engineering , electronic engineering , aperture (computer memory) , antenna (radio) , acoustics , optics , electrical engineering , materials science , physics , computer science , telecommunications , polymer chemistry , operating system
A new design mechanism has been explored to realise a single higher mode driven wideband dielectric resonator antenna (DRA). It targets an aperture coupled cylindrical DRA to operate in HEM 11Δ mode, which indeed is a first‐order repetitive form of HEM 11 δ mode. Innovative engineering has been realised on the DRA body as a mode‐filtering technique to maintain the modal purity and hence, the radiation uniformity. A C‐band prototype has been experimentally verified indicating as much as 24% impedance bandwidth with 8.5 dBi maximum gain. This design appears commercially viable and superior to the earlier, higher mode based developments, especially in terms of gain, but without involving any additional cost, weight, or design complexity.