Hybrid Power Combining Rectenna Array for Wide Incident Angle Coverage in RF Energy Transfer

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This paper discusses a new design approach that uses hybrid power combining rectenna array in radio frequency (RF) energy transfer systems to receive more energy in a wide incident angle range. A beam-forming matrix and a dc power management network (PMN) are introduced to the hybrid power combining. The normalized dc output power of the proposed hybrid power combining array is compared to the conventional power combining methods with regard to the incident wave angle, and the average received dc power is also calculated and compared. To experimentally verify the proposed hybrid combining array performance, four suspended patch antennas are attached to RF energy receiving architecture. A 4 x 4 Butler matrix and quadrature hybrids are used for the beam-forming matrix in a hybrid power combining rectenna array. A reconfigurable voltage doubler rectifier with a dc PMN is used to convert RF energy to dc energy and delivers proper voltage to the load. The measured results of each component are presented. Moreover, an experimental verification using fabricated components for RF energy transfer is presented and the measured received dc output power of conventional and proposed structures is presented and compared.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2017-09
Language
English
Article Type
Article
Keywords

ANTENNA-ARRAY; TRANSMISSION; DESIGN

Citation

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, v.65, no.9, pp.3409 - 3418

ISSN
0018-9480
DOI
10.1109/TMTT.2017.2678498
URI
http://hdl.handle.net/10203/226296
Appears in Collection
EE-Journal Papers(저널논문)
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