Title :
Current reduction on the ground plane using quarter-wavelength element
Author :
Ito, Takao ; Oki, Takashi ; Morishita, Hisashi
Author_Institution :
Dept. of Electr. & Electron. Eng., Nat. Defense Acad., Yokosuka, Japan
Abstract :
This study presents a way to reduce the current on the ground plane of small terminal using a quarter-wavelength additional element in the vicinity of antenna element, which does not required a balun, specific antenna form or trimming of the ground plane. We analyze the basic antenna characteristics and confirm the effect of the additional element employing nearby object, such as human hand or infinite PEC ground plane. In this paper, it is confirmed that the current on the ground plane is reduced and the radiation efficiency and gain improve by loading the additional element.
Keywords :
UHF antennas; antenna radiation patterns; antenna characteristics; antenna element vicinity; current reduction; gain improve; infinite PEC ground plane; quarter-wavelength additional element; radiation efficiency; small terminal ground plane; Antenna radiation patterns; Current distribution; Dipole antennas; Impedance matching; Load modeling; Loading; Current reduction; Inverted-F antenna; Quarter-wavelength element;
Conference_Titel :
Antennas and Propagation (ISAP), 2014 International Symposium on
Conference_Location :
Kaohsiung
DOI :
10.1109/ISANP.2014.7026726
