Title :
Theoretical and experimental investigation of a rectenna element for microwave power transmission
Author :
McSpadden, James O. ; Yoo, Taewhan ; Chang, Kai
Author_Institution :
Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA
fDate :
12/1/1992 12:00:00 AM
Abstract :
A method has been devised to experimentally characterize a packaged GaAs Schottky barrier diode by inserting it into a microstrip test mount. The nonlinear equivalent circuit parameters of the diode are determined by a small-signal test method. A large-signal measurement using the same test mount has also been configured to determine the power conversion efficiency from microwave to DC as well as determining the de-embedded network impedance of the diode. A nonlinear circuit simulation program using a multireflection algorithm is used to verify the experimental results for the 2.45-GHz diode. A Ka-band mixer diode is simulated for a 35-GHz rectenna. Based on the simulation results, a patch-type 35-GHz rectenna is designed and tested in a waveguide simulator. The efficiency is 29% with 120-mW input power. Because the diode could generate undesirable harmonic radiation, a frequency-selective surface is designed to reduce the second harmonic radiation for a 2.45-GHz rectenna. Theoretical results agree fairly well with experiments for all these studies
Keywords :
antenna testing; circuit analysis computing; digital simulation; equivalent circuits; microstrip antennas; microwave antenna arrays; microwave measurement; microwave power transmission; nonlinear network analysis; receiving antennas; rectification; solid-state microwave devices; solid-state rectifiers; 120 mW; 2.45 GHz; 29 percent; 35 GHz; GaAs; Ka-band mixer diode; Schottky barrier diode; de-embedded network impedance; frequency-selective surface; large-signal measurement; microstrip test mount; microwave power transmission; multireflection algorithm; nonlinear circuit simulation program; nonlinear equivalent circuit parameters; patch-type; power conversion efficiency; rectenna element; second harmonic radiation; small-signal test method; waveguide simulator; Circuit simulation; Circuit testing; Equivalent circuits; Gallium arsenide; Impedance measurement; Microstrip; Packaging; Rectennas; Schottky barriers; Schottky diodes;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
