5.8-GHz circularly polarized dual-rhombic-loop traveling-wave rectifying antenna for low power-density wireless power transmission applications
- 29 April 2003
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Microwave Theory and Techniques
- Vol. 51 (5), 1548-1553
- https://doi.org/10.1109/tmtt.2003.810137
Abstract
This paper reports a right-hand circularly polarized (RHCP) high-efficiency traveling-wave rectifying antenna (rectenna) designed in a coplanar stripline (CPS) circuit that is etched on a Rogers Duroid 5870 substrate with /spl epsiv//sub r/=2.2 and 20-mil thickness. A 4 /spl times/ 1 traveling-wave array of RHCP high-gain dual-rhombic-loop antennas (DRLAs) and a reflecting plane are used to provide highly efficient RF-to-DC conversion in the presence of lower power densities regardless of the rectenna's broadside orientation. The DRLA array has a circularly polarized antenna gain of 14.6 dB with a 2:1 voltage standing-wave ratio bandwidth of 17% and a better than 3 dB axial ratio fractional bandwidth of 7% centered about 5.8 GHz. The rectenna achieves 82% RF-to-DC conversion efficiency at 5.8 GHz and uses a low-profile CPS band-reject filter to suppress the re-radiated second harmonic by over 14 dB. The rectenna operating at low power density should have many applications when the transmitting power is low and/or the transmission distance is long.Keywords
This publication has 9 references indexed in Scilit:
- Experimental Thin-Film, Etched-Circuit RectennaPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2005
- A circularly polarized rectifying antenna array for wireless microwave power transmission with over 78% efficiencyPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- An experimental and theoretical characterization of a broadband arbitrarily-polarized rectenna arrayPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- 5.8-GHz circularly polarized rectifying antenna for wireless microwave power transmissionIEEE Transactions on Microwave Theory and Techniques, 2002
- Circularly polarised truncated-corner square patch microstrip rectenna for wireless power transmissionElectronics Letters, 2000
- Design and experiments of a high-conversion-efficiency 5.8-GHz rectennaIEEE Transactions on Microwave Theory and Techniques, 1998
- Coplanar stripline propagation characteristics and bandpass filterIEEE Microwave and Guided Wave Letters, 1997
- Circularly polarised rhombic hula hoop antennasElectronics Letters, 1996
- Theoretical and experimental development of 10 and 35 GHz rectennasIEEE Transactions on Microwave Theory and Techniques, 1992