Title :
Effects of dielectric or magnetic materials to electrical characteristics of very small normal-mode helical antennas
Author :
Ochiyama, Keita ; Michishita, Naobumi ; Yamada, Yoshihide
Author_Institution :
Dept. of Electr. & Electron. Eng., Nat. Defense Acad., Yokosuka, Japan
Abstract :
Dielectric or magnetic materials are used frequently in very small normal-mode helical antennas. In this paper, changes of self-resonant structures and antenna efficiencies are clarified. It is shown that magnetic materials can reduce antenna diameters and increase antenna efficiencies. Moreover, modifications of self-resonant equations in using materials are studied.
Keywords :
dielectric materials; dielectric resonator antennas; helical antennas; magnetic materials; antenna diameters; antenna efficiency; dielectric material effect; electrical characteristics; magnetic materials effect; self-resonant equations; self-resonant structures; very small normal-mode helical antennas; Antennas; Dielectric materials; Dielectrics; Equations; Magnetic materials; Mathematical model;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2012 IEEE
Conference_Location :
Chicago, IL
Print_ISBN :
978-1-4673-0461-0
DOI :
10.1109/APS.2012.6349330
