Title :
An experimental and theoretical characterization of a broadband arbitrarily-polarized rectenna array
Author :
Hagerty, J.A. ; Popovic, Z.
Author_Institution :
Dept. of Electr. & Comput. Eng., Colorado Univ., Boulder, CO, USA
Abstract :
Planar rectenna arrays for rectification of broadband electromagnetic waves of arbitrary polarization are designed and characterized. The performance of the arrays is accurately predicted using a combination of full-wave analysis for the passive part of the rectenna and harmonic balance simulations for the nonlinear rectification process. The arrays used in this paper to demonstrate the principles of operation consist of self-similar right-hand and left-hand polarized spirals which are simulated and measured over a 2.5:1 band (6-15 GHz). Two arrays with different diodes exhibit conversion efficiencies from 5 to 45% under monochromatic linearly polarized illumination with power densities from 1-1.6 mW/cm/sup 2/.
Keywords :
active antenna arrays; electromagnetic wave polarisation; microwave power transmission; planar antenna arrays; rectification; 5 to 45 percent; 6 to 15 GHz; arbitrarily-polarized rectenna array; broadband electromagnetic waves; broadband rectenna array; full-wave analysis; harmonic balance simulations; left-hand polarized spirals; nonlinear rectification process; planar rectenna arrays; rectenna characterization; right-hand polarized spirals; Analytical models; Diodes; Electromagnetic scattering; Electromagnetic wave polarization; Harmonic analysis; Lighting; Performance analysis; Predictive models; Rectennas; Spirals;
Conference_Titel :
Microwave Symposium Digest, 2001 IEEE MTT-S International
Conference_Location :
Phoenix, AZ, USA
Print_ISBN :
0-7803-6538-0
DOI :
10.1109/MWSYM.2001.967269
