Title :
Mutual coupling characteristics of two unbalanced fed ultra low profile inverted L antennas closely faced each other
Author :
Taguchi, Mitsuo ; Hirata, Takuro
Author_Institution :
Grad. Sch. of Eng., Nagasaki Univ., Nagasaki, Japan
Abstract :
The WPT system composed of the unbalanced fed, ultra low profile inverted L antenna on a rectangular conducting plane is proposed and analyzed numerically. The input impedances of transmitting and receiving antennas are matched to 50 ohms by adjusting the length of horizontal element and the feed point position. The size of conducting plane is 550 mm by 1,283 mm. The antenna height h is 70 mm (wavelength/43). In the case of the distance between transmitting and receiving antennas is 140 mm, the power transfer efficiency becomes 92.2% at the design frequency of 100 MHz.
Keywords :
VHF antennas; couplings; power transmission; receiving antennas; transmitting antennas; WPT system; distance 140 mm; distance 70 mm; feed point position; frequency 100 MHz; mutual coupling characteristics; power transfer efficiency; receiving antennas; rectangular conducting plane; transmitting antennas; two unbalanced fed ultra low profile inverted L antennas; Electric fields; Feeds; Magnetic fields; Receiving antennas; Transmitting antennas; Wireless communication; Inverted L antenna; near-field coupled system; ultra low profile antenna; wireless power transmission;
Conference_Titel :
Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies, Systems, and Applications (IMWS), 2012 IEEE MTT-S International
Conference_Location :
Kyoto
Print_ISBN :
978-1-4673-1777-1
DOI :
10.1109/IMWS.2012.6215791
