Title :
Low-frequency inverted-F antenna on hemispherical ground plane
Author :
Saita, Yusuke ; Ito, Takao ; Michishita, Naobumi ; Morishita, Hisashi
Author_Institution :
Dept. of Electr. & Electron. Eng., Nat. Defense Acad., Yokosuka, Japan
Abstract :
Helmet antennas have been widely developed as wearable antennas for military and disaster prevention uses. To reduce the operational frequency band and overcome the gain reduction in proximity to human head, this paper presents the inverted-F antenna on the hemispherical metal ground plane. The arrangement of the antenna element and the feeding directions are examined in detail through electromagnetic simulation. As a result, the gain of -3.0 dBi is achieved in proximity to the human head.
Keywords :
antenna feeds; wearable antennas; antenna feeding; disaster prevention; electromagnetic simulation; helmet antenna; hemispherical metal ground plane; low-frequency inverted-F antenna; military application; proximity gain reduction; wearable antenna; Antenna radiation patterns; Bandwidth; Broadband antennas; Dipole antennas; Directive antennas; Load modeling; Helmet antennas; Hemispherical ground plane; Human head; Inverted-F antennas;
Conference_Titel :
Antennas and Propagation (ISAP), 2014 International Symposium on
Conference_Location :
Kaohsiung
DOI :
10.1109/ISANP.2014.7026591
