TY - JOUR
T1 - Ultra-Wideband Rectenna Using Complementary Resonant Structure for Microwave Power Transmission and Energy Harvesting
AU - Lu, Ping
AU - Song, Chaoyun
AU - Huang, Ka Ma
N1 - Funding Information:
Manuscript received September 26, 2020; revised December 17, 2020 and February 22, 2021; accepted March 12, 2021. Date of publication March 31, 2021; date of current version July 1, 2021. This work was supported in part by the National Natural Science Foundation of China under Grant 51907130 and Grant 61931009; in part by the Sichuan Science and Technology Program under Grant 2020YFH0091; in part by the Chengdu Science and Technology Program under Grant 2020-GH02-00036-HZ; and in part by the Fundamental Research Funds for the Central Universities under Grant 20504153015. (Corresponding authors: Ping Lu; Chaoyun Song.) Ping Lu and Ka Ma Huang are with the School of Electronics and Information Engineering, Sichuan University, Chengdu 610064, China (e-mail: pinglu90@scu.edu.cn; kmhuang@scu.edu.cn).
Publisher Copyright:
© 1963-2012 IEEE.
PY - 2021/7
Y1 - 2021/7
N2 - An ultra-wideband (UWB) rectenna (fractional bandwidth >100%) using a novel wideband complementary matching stub is proposed for microwave power transmission and energy harvesting. A simple resonant structure, i.e., LC series-parallel resonant circuit, is embedded to the L-shaped complementary matching stub. Due to the unique frequency response of the LC resonant circuit, the proposed matching stub can exhibit 'open' and 'short' circuits as a function of frequency, thereby acting as a complementary matching circuit covering a relatively wide frequency range. Having utilized the proposed matching stub, the nonlinear input impedance of the rectifier can be tuned to conjugately match the antenna impedance throughout the frequency band of interest. Simulated and measured results show that the proposed rectenna has good matching performance (S11 <-10 dB) and high RF-dc conversion efficiency (>50%) over a relatively wide frequency range from 0.9 to 3 GHz (for GSM, Wi-Fi, and WLAN bands). The maximum conversion efficiency of 73.4% is realized at 3-dBm input power. It is evident that the proposed resonant structure-based matching scheme is a promising and effective solution to facilitate the UWB rectenna design with stably high efficiency over a very wide frequency band.
AB - An ultra-wideband (UWB) rectenna (fractional bandwidth >100%) using a novel wideband complementary matching stub is proposed for microwave power transmission and energy harvesting. A simple resonant structure, i.e., LC series-parallel resonant circuit, is embedded to the L-shaped complementary matching stub. Due to the unique frequency response of the LC resonant circuit, the proposed matching stub can exhibit 'open' and 'short' circuits as a function of frequency, thereby acting as a complementary matching circuit covering a relatively wide frequency range. Having utilized the proposed matching stub, the nonlinear input impedance of the rectifier can be tuned to conjugately match the antenna impedance throughout the frequency band of interest. Simulated and measured results show that the proposed rectenna has good matching performance (S11 <-10 dB) and high RF-dc conversion efficiency (>50%) over a relatively wide frequency range from 0.9 to 3 GHz (for GSM, Wi-Fi, and WLAN bands). The maximum conversion efficiency of 73.4% is realized at 3-dBm input power. It is evident that the proposed resonant structure-based matching scheme is a promising and effective solution to facilitate the UWB rectenna design with stably high efficiency over a very wide frequency band.
KW - Broadband rectenna
KW - complementary matching stub
KW - microwave power transmission
KW - resonant structure
KW - ultra-wideband (UWB).
UR - http://www.scopus.com/inward/record.url?scp=85103762407&partnerID=8YFLogxK
U2 - 10.1109/TMTT.2021.3067902
DO - 10.1109/TMTT.2021.3067902
M3 - Article
AN - SCOPUS:85103762407
SN - 0018-9480
VL - 69
SP - 3452
EP - 3462
JO - IEEE Transactions on Microwave Theory and Techniques
JF - IEEE Transactions on Microwave Theory and Techniques
IS - 7
ER -