Journal
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
Volume 10, Issue -, Pages 306-309Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LAWP.2011.2141973
Keywords
Dual circular polarizations; harmonics rejecting device; microstrip antenna; rectenna; rectifying circuit; RF-dc conversion efficiency
Funding
- Comite Mixte de Cooperation Universitaire (CMCU) [18521YK]
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A 2.45-GHz rectifying antenna (rectenna) using a compact dual circularly polarized (DCP) patch antenna with an RF-dc power conversion part is presented. The DCP antenna is coupled to a microstrip line by an aperture in the ground plane and includes a bandpass filter for harmonic rejections. It exhibits a measured bandwidth of 2100 MHz (10 dB return loss) and a 705-MHz CP bandwidth (3 dB axial ratio). The maximum efficiency and dc voltage are respectively equal to 63% and 2.82 V over a resistive load of 1600 Omega for a power density of 0.525 mW/cm(2)
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