Title :
A novel rectifier circuit operating at dual-frequencies of 1.8 GHz and 2.4 GHz
Author :
Long Shen ; Xuexia Yang
Author_Institution :
Sch. of Commun. & Inf. Eng., Shanghai Univ., Shanghai, China
Abstract :
A dual-frequency microstrip rectifier working at 1.8GHz and 2.4GHz (GSM and ISM bands) is proposed for the rectenna of a wireless power transmission (WPT) system. The diode has different complex impendences at the two operation frequencies under the same input power and load conditions, so a cross-shaped match stub is designed to match the two impedances. The DC-pass filter (DPF), which is composed of three cascade fan shaped stubs, effectively blocks the fundamental frequency and the higher order harmonics generated from the diode. When the input power is 10mW, the simulated RF-DC conversion efficiencies on the 800 Ω load are 77.5% and 75.1% for 1.8GHz and 2.4 GHz operation frequencies, respectively.
Keywords :
band-pass filters; biomedical electronics; cellular radio; electric impedance; rectifiers; telemedicine; DC-pass filter; GSM bands; ISM bands; cross-shaped match stub; diode; dual-frequency microstrip rectifier circuit; frequency 1.8 GHz; frequency 2.4 GHz; higher order harmonics generation; impedances; power 10 mW; rectenna; resistance 800 ohm; simulated RF-DC conversion efficiencies; wireless power transmission system; Impedance; Microstrip; Rectennas; Rectifiers; Wireless communication; Wireless sensor networks; dual-frequency; match; rectifier; wireless power transmission;
Conference_Titel :
Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO), 2013 IEEE MTT-S International
Conference_Location :
Singapore
DOI :
10.1109/IMWS-BIO.2013.6756161
