Title :
Experimental study on sensors in a car engine compartment driven by microwave power transfer
Author :
Shinohara, Naoki ; Goto, Hiroaki ; Mitani, Tomohiko ; Dosho, Hiroyuki ; Mizuno, Mitsuhiko
Author_Institution :
RISH, Kyoto Univ., Uji, Japan
Abstract :
In this study, we examined the microwave power transfer to sensors in a car engine compartment. First, we calculated the transmission efficiency in free space. We changed the transmission distance, and confirmed a theoretical limit value of the transmission efficiency in free space. Second, we simulated the transmission efficiency using the engine compartment model. We changed the direction of the antennas, and obtained 2.8% as the highest transmission efficiency in the required antenna position. Third, we conducted a microwave power transfer experiment in the engine compartment. Then, we changed the direction of the antennas and obtained 1.2% as the highest transmission efficiency. Finally, we changed the position of the antennas to improve the transmission efficiency and simulated the transmission efficiency. As a result, we obtained 8.4% as the highest transmission efficiency.
Keywords :
antennas; microwave power transmission; antenna position; car engine compartment; free space; microwave power transfer; transmission distance; transmission efficiency; Antenna measurements; Dipole antennas; Directive antennas; Engines; Microwave antennas; Microwave communication; Transmitting antennas; In-Vehicle Sensor; Microwave Power Transfer; Microwave Propagation;
Conference_Titel :
Antennas and Propagation (EuCAP), 2015 9th European Conference on
Conference_Location :
Lisbon
