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Title	Dual-Facet Loaded Dual-Polarized Quad-Band Dielectric Resonator-Rectenna For Rf Energy Harvesting In Smart City Applications
ID_Doc	21166
Authors	Surender D.; Reddy Adama V.; Khan T.; Talukdar F.A.; Rama Krishna D.; Amarnath G.
Year	2023
Published	2nd International Conference on Wireless, Antenna and Microwave Symposium, WAMS 2023
DOI	http://dx.doi.org/10.1109/WAMS57261.2023.10242897
Abstract	The most widely used approach for replacing traditional batteries and extending battery life is radio frequency energy harvesting (RFEH). However, the power density in the immediate environment is low thus the antenna with multiband features is essential to gather a huge amount of RF power from the low-density atmosphere. This paper presented a multiband dual-polarized dielectric resonator antenna for smart city applications using RFEH technology. The proposed DR antenna covers the frequency bands of WLAN 5.2 GHz, Wi-Fi 5.8 GHz, and future 6 GHz Wi-Fi bands of 6.2 GHz and 6.6 GHz. A rectangular dielectric resonator (DR) is fabricated using a K10 material and it is designed on a low-cost epoxy FR4 substrate (having ϵr=4.4). A coaxial probe feeding approach is used for excitation purposes. The substrate and DR material dimensions are 66 mm×68.2 mm×1.6 mm and 13.6 mm×11.4 mm×6.35 mm respectively. A spiral metallic coil is stuck on two faces (front and bottom) of a DR material to operate the antenna in the desired band of frequencies. The proposed technique is used to bring down the axial ratio (AR) value below 3dB level in two resonant bands. The maximum gain of 6.72 dB is observed experimentally at 5.2 GHz frequency. © 2023 IEEE.
Author Keywords	circular polarization (CP); Radio frequency energy harvesting (RFEH); single-band antenna; smart city; spiral facet

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