Open AccessMiniaturization of an Ultra‐Wideband Antenna with Two Spiral Elements
Author(s) -
Hong Seokjin,
Choi Jaehoon
Publication year - 2009
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.09.0208.0294
Subject(s) - omnidirectional antenna , spiral antenna , radiation pattern , ground plane , optics , miniaturization , dipole antenna , wideband , acoustics , coaxial antenna , ultra wideband , physics , antenna (radio) , electronic engineering , engineering , electrical engineering
In this letter, novel antennas with two spiral elements are presented for ultra‐wideband application. The original antenna consists of a T‐shaped microstrip feed line, two spiral radiating elements, and a ground plane with two circular slots. It measures 30 mm × 40 mm × 1.6 mm. Spiral elements are used to increase the lower bandwidth limit. To further reduce the size of the antenna, the original antenna is cut in half by using the symmetry of the surface current distributions. The proposed antennas feature omnidirectional radiation patterns and good gain flatness.