Title :
Wireless power transmission using CRLH coupled-line coupler at 30 MHz
Author :
Kim, Gunyoung ; Lee, Bomson
Author_Institution :
Dept. of Electron. & Radio Eng., Kyung Hee Univ., Yongin, South Korea
Abstract :
This paper presents a microstrip coupled line coupler structure for wireless power transmission (WPT) at 30 MHz. It uses a coupled line coupler made of CRLH (Composite Right-Left Handed) line and RH (Right Handed) line placed vertically. The WPT efficiency (or coupling coefficient) of a CRLH coupler with 3 unit cells is about 22.43% for a vertical spacing of 10mm. The coupling coefficient of CRLH coupler has been analyzed by changes in vertical spacing and horizontal offset between the lines. Besides, we have designed a case of multiple loads with three couplers. These three couplers may be three moving objects receiving electric powers from a main line.
Keywords :
electric connectors; inductive power transmission; CRLH coupled-line coupler; WPT efficiency; composite right-left handed line; coupling coefficient; electric powers; frequency 30 MHz; right handed line; wireless power transmission; Couplers; Couplings; Microstrip; Power transmission lines; Scattering parameters; Wireless communication; composite right-left handed; coupled line coupler; efficiency; wireless power transmission;
Conference_Titel :
Microwave Conference Proceedings (APMC), 2011 Asia-Pacific
Conference_Location :
Melbourne, VIC
Print_ISBN :
978-1-4577-2034-5
