Open AccessBroadbanding of a Planar Antenna with Three Frequency Bands and Its Application
Author(s) -
Matsui Hiroyasu,
Wakabayashi Toshio
Publication year - 2007
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.07.0107.0170
Subject(s) - planar , antenna (radio) , acoustics , coaxial antenna , return loss , patch antenna , antenna measurement , electronic engineering , radiation pattern , engineering , electrical engineering , computer science , physics , computer graphics (images)
This paper describes a line element planar antenna with three frequency bands. To obtain broadband characteristics, a modified planar antenna that has semielliptical elements based on the characteristics of a line element planar antenna is proposed and analyzed by the finite difference time domain method. Return loss characteristics are discussed as functions of the eccentricity values of semi‐ellipse at each element. The broadbanding of the modified planar antenna is implemented based on the results. The planar antenna with three systems (an 800 MHz band cellular phone, a third‐generation cellular phone, and a 2.4 GHz band wireless LAN system) is considered as an application example.