Title :
Antenna efficiency improvement of a miniaturized meander line antenna by loading a high ϵr material
Author :
Yamada, Yoshihide ; Michishita, Naobumi
Author_Institution :
Nat. Defense Acad., Yokosuka, Japan
Abstract :
In this paper, an overview of structural conditions and electric performances of meander line antennas is given. In order to examine the usefulness of high εr materials, a very small meander line antenna is designed. It is shown that a meander structure becomes very simple by loading a high εr material. So, the ohmic resistance of an antenna conductor can be reduced sufficiently. As a result, the antenna efficiency can be improved. Antenna electrical characteristics such as antenna impedances, current distribution and radiation patterns are also shown.
Keywords :
UHF antennas; antenna radiation patterns; dielectric-loaded antennas; dipole antennas; 700 MHz; antenna conductor ohmic resistance reduction; antenna efficiency improvement; antenna impedances; current distribution; dielectric loaded meander line antenna; high ϵr material loaded antenna; miniaturized meander line antenna; radiation patterns; short dipole antenna; Communication industry; Conducting materials; Conductive films; Defense industry; Electric variables; Employment; Erbium; Frequency; Loaded antennas; Structural engineering;
Conference_Titel :
Antenna Technology: Small Antennas and Novel Metamaterials, 2005. IWAT 2005. IEEE International Workshop on
Print_ISBN :
0-7803-8842-9
DOI :
10.1109/IWAT.2005.1461034
