A WIDEBAND ANTENNA ARRAY FOR RF ENERGY HARVESTING

2021 ◽  
pp. 39-45
Author(s):  
Thuy
Keyword(s):  
Energy Harvesting ◽  
Antenna Array ◽  
Wide Bandwidth ◽  
Rf Energy Harvesting ◽  
Wideband Antenna ◽  
Rf Energy

In this paper, we introduce a wideband antenna array for RF energy harvesting from 3G/4G and Wi-Fi. The array consists of four parallelly linked wideband antenna elements and a metallic reflector to enhance gain and suppress back lobe radiation. In measurement, the antenna array possesses a wide bandwidth spanning from 1.6 GHz to 2.5 GHz, fully cover the three harvested bands, and the high gains between 13.5 dBi and 14 dBi. The antenna is employed in a multiband rectenna for energy harvesting and placed in the ambience. The rectenna was able to collect up to 0.27 mW power.

scholarly journals Silver Sandwiched ITO Based Transparent Antenna Array for RF Energy Harvesting in 5G Mid-Range of Frequencies

IEEE Access ◽  
2021 ◽  
pp. 1-1
Author(s):  
Nermeen A. Eltresy ◽  
Abd Elhamid M. Abd Elhamid ◽  
Dalia N. Elsheakh ◽  
Hadia M. Elhennawy ◽  
Esmat A. Abdallah
Keyword(s):  
Energy Harvesting ◽  
Antenna Array ◽  
Rf Energy Harvesting ◽  
Rf Energy

scholarly journals A 2.77 μW Ambient RF Energy Harvesting Using DTMOS Cross-Coupled Rectifier on 65 nm SOTB and Wide Bandwidth System Design

Electronics ◽  
2019 ◽  
Vol 8 (10) ◽  
pp. 1173
Author(s):  
Thuy-Linh Nguyen ◽  
Yasuo Sato ◽  
Koichiro Ishibashi
Keyword(s):  
Energy Harvesting ◽  
Orthogonal Frequency Division Multiplexing ◽  
Input Power ◽  
Potential Candidate ◽  
Wide Bandwidth ◽  
Rf Energy Harvesting ◽  
Ambient Environment ◽  
Rf Energy ◽  
Rf Signal ◽  
To Receive

This paper proposes a structure of the μ W RF energy harvesting (RFEH) system that is used for scavenging RF power from an ambient environment. A cross-coupled rectifier (CCR) with floating sub-circuit structures was utilized in the application of dynamic threshold MOSFET (DTMOS) on Silicon on Thin Buried Oxide (SOTB) to obtain high drain conductance of the MOSFET. A wide bandwidth matching between antenna and rectifier was designed to receive energy from the orthogonal frequency division multiplexing (OFDM) RF signal with a bandwidth of 15 MHz at 950 MHz band. Realistic measurements with a 950 MHz LTE mobile phone signal from the ambient environment indicate that an average DC output power of 2.77 μ W is harvested with the proposed RFEH system at a level of −19.4 dBm input power. The proposed RFEH system exhibits the best performance when compared to that of other realistic RFEH systems and is a potential candidate for battery-less Internet of Things (IoT) applications.

scholarly journals Flexible milimeter-wave microstrip patch antenna array for wearable RF energy harvesting applications

2021 ◽  
Vol 11 (3) ◽  
pp. 1976
Author(s):  
Mohd Saiful Riza Bashri ◽  
Noor Amalina Ramli
Keyword(s):  
Energy Harvesting ◽  
Antenna Array ◽  
Patch Antenna ◽  
Impedance Matching ◽  
Microstrip Patch Antenna ◽  
Structural Deformation ◽  
Body Parts ◽  
Rf Energy Harvesting ◽  
Microstrip Patch ◽  
Rf Energy

In this paper, a series-fed milimeter-wave microstrip patch antenna array operating at 28 GHz is presented for wearable radio-frequency (RF) energy harvesting applications. The antenna array is made of 4×4 rectangular microstrip elements on a polyethylene terephthalate (PET) substrate to provide conformability when directly attached on human body parts. A 4-way Wilkinson power divider is connected to the array for RF power combining. The overall size of the antenna is 47×28×0.25 mm. The half-power beamwidth (HPBW) of the antenna array can be increased up to 151.9⁰ via structural deformation making it suitable for energy harvesting applications. The performance of the antenna array is investigated in terms of impedance matching, gain and radiation pattern. The average simulated specific absorption rate (SAR) of the antenna is 0.52 W/kg which is well below the safety limit of 1.6 W/kg averaged over 1 g of tissue for 100 mW of input power.

scholarly journals Patch Antenna Array for RF Energy Harvesting Systems in 2.4 GHz WLAN Frequency Band

2020 ◽  
Vol V9 (05) ◽  
Author(s):  
Akash Kumar Gupta ◽  
V Praveen ◽  
V Swetha Sri ◽  
CH. Nagavinay Kumar, B. Kishore ◽  
Keyword(s):  
Energy Harvesting ◽  
Antenna Array ◽  
Frequency Band ◽  
Patch Antenna ◽  
Rf Energy Harvesting ◽  
Harvesting Systems ◽  
Rf Energy

scholarly journals Design and Implementation of Wearable Microstrip Fabric Antenna for RF Energy Harvesting

2021 ◽  
Author(s):  
T. Rubesh kumar ◽  
Moorthi Madhavan
Keyword(s):  
Energy Harvesting ◽  
Base Station ◽  
Radiation Efficiency ◽  
Antenna Design ◽  
Wave Band ◽  
Wide Bandwidth ◽  
Rf Energy Harvesting ◽  
Dielectric Characterization ◽  
Rf Energy ◽  
Promising Source

Abstract In 5G network, the key parts are millimeter wave band (mmWave band) involving 26 GHz & 28 GHz which aims to solve issues related to traffic using its wide bandwidth. Features of 5G such as transmitters with high directivity, wide bandwidth and base station with high density project it as a promising source of RF energy harvesting. In order to harvest RF power from the full spectrum in an efficient way, broadband antenna design is demanded. This paper focuses on designing wearable microstrip fabric antenna operating in 5G spectrum at 26 GHz & 28 GHz for RF energy harvesting. Impedance bandwidth of the antenna is about 20 GHz to 30 GHz exhibiting omnidirectional pattern of radiation with on-body gain with a peak value of 7 dB making it suitable for harvesting RF energy. On body radiation efficiency & off body radiation efficiency are obtained as 40% and 60% when operating in the frequency range of 24 GHz & 30 GHz. In mmWave band, dielectric characterization of a two line fabric substrate microstrip antenna is obtained. Fabrication of the antenna is done using polyimide copper laminates etched with ultra thin size 150 µm on a woven polyester substrate of 310 µm thickness. Improved gain and stable bandwidth are achieved from the proposed antenna design when demonstrated in human proximity providing high robustness.

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