ArticleSensors (Basel, Switzerland)2021
Multiband Ambient RF Energy Harvester with High Gain Wideband Circularly Polarized Antenna toward Self-Powered Wireless Sensors.
Article in Sensors (Basel, Switzerland), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed, 21 citations in OpenAlex.
- RF energy harvesters for wireless sensors, state of the art, future prospects and challenges: a review.Physical and engineering sciences in medicine · 2024Review
- A Compact Circular Rectenna for RF-Energy Harvesting at ISM Band.Micromachines · 2023Article
- A High Gain Embedded Helix and Dielectric Rod Antenna with Low Side Lobe Levels for IoT Applications.Sensors (Basel, Switzerland) · 2022Article
- Tri-Band Rectenna Dedicated to UHF RFID, GSM-1800 and UMTS-2100 Frequency Bands.Sensors (Basel, Switzerland) · 2022Article
- A New RF Energy Harvesting System Based on Two Architectures to Enhance the DC Output Voltage for WSN Feeding.Sensors (Basel, Switzerland) · 2022Article
- A Wideband Circularly Polarized Magnetoelectric Dipole Antenna for 5G Millimeter-Wave Communications.Sensors (Basel, Switzerland) · 2022Article
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Authors and funding
2 authors at 1 institution in 1 country.
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Abstract
In this work toward a sustainable operation of a self-powered wireless sensor, we investigated a multiband Wi-Fi/3G/4G/5G energy harvester based on a novel wideband circularly polarized antenna, a quadplexer, and rectifiers at four corresponding bands. This proposed antenna consisted of four sequentially rotated dual-dipoles, fed by a hybrid feeding network with equal amplitude and an incremental 90° phase delay. The feeding network was composed of three Wilkinson power dividers and Schiffman phase shifters. Based on the sequential rotation method, the antenna obtained a -10 dB reflection coefficient bandwidth of 71.2% from 1.4 GHz to 2.95 GHz and a 3 dB axial ratio (AR) bandwidth of 63.6%, from 1.5 GHz to 2.9 GHz. In addition, this antenna gain was higher than 6 dBi in a wide bandwidth from 1.65 GHz to 2.8 GHz, whereas the peak gain was 9.9 dBi. The quad-band rectifier yielded the maximum AC-DC conversion efficiency of 1.8 GHz and was 60% at -1 dBm input power, 2.1 GHz was 55% at 0 dBm, 2.45 GHz was 55% at -1 dBm, and 2.6 GHz was 54% at 0.5 dBm, respectively. The maximum RF-DC conversion efficiency using the wideband circularly polarized antenna was 27%, 26%, 25.5%, and 27.5% at -6 dBm of input power, respectively.
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