Open AccessStudy of a single-frequency retrodirective system with a beam pilot signal using dual-mode dielectric resonator antenna elements
Author(s) -
Takayuki Matsumuro,
Yoshihiro Ishikawa,
Tomohiko Mitani,
Naoki Shinohara,
Masashi Yanagase,
Masato Matsunaga
Publication year - 2017
Publication title -
wireless power transfer
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.275
H-Index - 11
ISSN - 2052-8418
DOI - 10.1017/wpt.2017.4
Subject(s) - dielectric resonator antenna , dielectric resonator , antenna (radio) , resonator , optics , antenna array , signal (programming language) , acoustics , materials science , electrical engineering , physics , engineering , computer science , programming language
A terrestrial microwave power transmission system is considered as an effective method for collecting natural energy. In this system, frequency dependence of the refractive index and multipath propagation due to the ground surface poses problems. In the study, a single-frequency retrodirective system was proposed with a beam pilot signal using dual-mode dielectric resonator antenna elements. The results confirmed that the beam pilot signal radiated from the entire surface of the receiving antenna and accurately used the same propagation space as that of microwave power by beam propagation method simulation. A dual-mode dielectric resonator antenna was proposed as a common array antenna element for the beam pilot signal and microwave power. This involves a cross-shaped hemispherical dielectric resonator structure, and an isolation level exceeding 60 dB was experimentally measured between the orthogonal ports of the fabricated antenna. The dual-mode dielectric resonator antenna with an isolation exceeding 60 dB was successfully developed as an enabling device to realize a single-frequency retrodirective system with a beam pilot signal.