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Dielectric Grating Antenna for 2D Waveguides Interconnection
Yasuaki Monnai,Hiroyuki Shinoda 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
A novel microwave antenna device made of a dielectric grating is proposed to enlarge the communication area of the Two-Dimensional Communication by converting two-dimensionally guided waves into three-dimensionally radiated beams, and enabling directional wireless communication or 2D waveguides interconnection. In this paper, we review the experimental results for one-dimensional grating to show the validity of the proposed method, and then show simulation results for two-dimensional grating to verify the feasibility of the three-dimensional directivity control.
Safe Wireless Power Transmission Using Low Leakage 2D-Communication Sheet
Akihito Noda,Hiroyuki Shinoda 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
In this paper, we present a new type of coupler which is applicable to low leakage two-dimensional communication (2DC) sheets. Our 2DC system can transfer signals and powers simultaneously by using microwaves which travels in a two-dimensional medium. The goal of this paper is supplying 1 W/cm power through the sheet safely. In this paper, the safeness is evaluated in terms of localized specific absorption rate (SAR), according to the International Commission on Non-Ionizing Radiation Protection (ICNIRP) Safety Guidelines. First of all, a low leakage 2DC sheet that satisfies above criteria is designed. Next, it is clarified that the problem is the conventional 2DC power transmission coupler cannot extract enough power from the low leakage sheet. As an alternative to the conventional coupler, we propose a coupler which has a capacitive reactance layer on its surface. Finally we present a measurement result which indicates that proposed system can transfer 0.54 W/cm power safely.