Title :
Degradation factors of short-distance wireless power transmission and allowable variation of receiving circuit parameters
Author :
Iigusa, Kyoichi ; Harada, Hiroshi
Author_Institution :
Smart Wireless Lab., NICT, Yokosuka, Japan
Abstract :
Wireless transmission efficiency is deteriorated by radiation and ohmic loss even when the receiving circuit is optimally controlled and the transmitting circuit is controlled to match the input impedance of the transmitting antenna. The dependences of these degradation factors on transmission distance, antenna type, size, and arrangement are investigated. Because variation of the receiving circuit parameters deteriorates transmission efficiency, the variation width allowing receiving efficiency degradation (in which degradation by impedance mismatch of a transmitting antenna is excepted) of 10% is also evaluated.
Keywords :
impedance matching; power transmission; transmitting antennas; antenna arrangement; antenna size; antenna type; degradation factors; impedance mismatch; ohmic loss; receiving circuit parameters; short-distance wireless power transmission; transmission distance; transmission efficiency; transmitting antenna; transmitting circuit; variation width; Dipole antennas; Impedance; Propagation losses; Receiving antennas; Transmitting antennas; Wireless communication; dipole; efficiency; loop; loss; radiation; receipt; transmission;
Conference_Titel :
Antennas and Propagation (EuCAP), 2014 8th European Conference on
Conference_Location :
The Hague
DOI :
10.1109/EuCAP.2014.6902195
