TY - JOUR
T1 - Compact and Broadband RF Rectifier with 1.5 Octave Bandwidth Based on a Simple Pair of L-Section Matching Network
AU - Mansour, Mohamed M.
AU - Kanaya, Haruichi
N1 - Funding Information:
Manuscript received October 20, 2017; revised January 26, 2018; accepted February 9, 2018. Date of publication March 12, 2018; date of current version April 6, 2018. This work was supported in part by the Grand-in-Aid for KAKENHI and CREST from Japan Society for the Promotion of Science, Japan, in part by VDEC, The University of Tokyo, in collaboration with Keysight Technologies, and in part by the Ministry of Higher Education, Egypt. (Corresponding author: Mohamed M. Mansour.) M. M. Mansour is with the Graduate School of Information Science and Electrical Engineering, Kyushu University, Fukuoka 819-0395, Japan, and also with the Electronics Research Institute, Microelectronics Department, Egypt (e-mail: m.mansour01@ieee.org).
PY - 2018/4
Y1 - 2018/4
N2 - This letter proposes a novel wideband rectifier circuit for RF energy harvesting. The proposed circuit can collect signals efficiently over broad bandwidth spanning from 0.87 to 2.7 GHz which includes UHF ISM 900 MHz, GSM 900 and 1800 MHz, wireless communication, PCS, and ISM 2.4 GHz. In order to obtain sufficiently large rectifier bandwidth, a matching circuit based on high-pass type L-section for lower band impedance matching and inductive L-section for higher band impedance matching is proposed. The rectifier circuit is constructed using voltage doubler configuration with Schottky diode SMS7630-005LF. The circuit is optimized and refabricated to compensate the undesired parasitic and obtain the required rectifier performance. Two prototypes were simulated, fabricated, and characterized. The rectifier has a measured conversion efficiency exceeding 30% from 870 MHz to 2.5 GHz at 0 dBm input power and a load terminal of 2 kΩ and a dc output voltage equal to 1 V. The circuit sensitivity may reach up to -20 dBm with dc output voltage 40 mV and 8% conversion efficiency. The maximum measured efficiency is 63% from 1.1 to 1.35 GHz.
AB - This letter proposes a novel wideband rectifier circuit for RF energy harvesting. The proposed circuit can collect signals efficiently over broad bandwidth spanning from 0.87 to 2.7 GHz which includes UHF ISM 900 MHz, GSM 900 and 1800 MHz, wireless communication, PCS, and ISM 2.4 GHz. In order to obtain sufficiently large rectifier bandwidth, a matching circuit based on high-pass type L-section for lower band impedance matching and inductive L-section for higher band impedance matching is proposed. The rectifier circuit is constructed using voltage doubler configuration with Schottky diode SMS7630-005LF. The circuit is optimized and refabricated to compensate the undesired parasitic and obtain the required rectifier performance. Two prototypes were simulated, fabricated, and characterized. The rectifier has a measured conversion efficiency exceeding 30% from 870 MHz to 2.5 GHz at 0 dBm input power and a load terminal of 2 kΩ and a dc output voltage equal to 1 V. The circuit sensitivity may reach up to -20 dBm with dc output voltage 40 mV and 8% conversion efficiency. The maximum measured efficiency is 63% from 1.1 to 1.35 GHz.
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U2 - 10.1109/LMWC.2018.2808419
DO - 10.1109/LMWC.2018.2808419
M3 - Article
AN - SCOPUS:85043470099
VL - 28
SP - 335
EP - 337
JO - IEEE Microwave and Wireless Components Letters
JF - IEEE Microwave and Wireless Components Letters
SN - 1531-1309
IS - 4
ER -