Title :
A dual-frequency rectifier with adaptive power
Author :
Jia-Jun Lu;Xue-Xia Yang;Chong Tan
Author_Institution :
School of Communications and Information Engineering, Shanghai University, Shanghai 200072, China
Abstract :
A dual-frequency rectifier with adaptive power is proposed for the rectenna of a microwave power transmission system. It operates at 900MHz and 2.4GHz (GSM and ISM bands) on a wide and low input power condition. A FET works as an adaptive switch for changing the working modes of the rectifier according to the level of the input power. A cross-shaped match stub matches the two impedances of the diode to 50fl. A shunted capacitor works as a dc-pass filter to smooth the output DC power. The simulated maximum conversion efficiencies at two operation frequencies are 63.5% and 56.9%, respectively. The input power range in which the efficiency exceeds 40% is from -16dBm to 4dBm at 900MHz and is from -13dBm to 5dBm at 2.4GHz.
Keywords :
"Rectifiers","Decision support systems","Microwave filters","Adaptive systems","Rectennas","Microwave FETs","Power transmission"
Conference_Titel :
Microwave Conference (APMC), 2015 Asia-Pacific
Print_ISBN :
978-1-4799-8765-8
DOI :
10.1109/APMC.2015.7413023
