scholarly journals A Wideband Microstrip Patch Antenna with Integrated Circular Slot for RF Energy Harvesting

2019 ◽  
Vol 8 (11) ◽  
pp. 778-781
Keyword(s):  
Energy Harvesting ◽  
Radio Frequency ◽  
Patch Antenna ◽  
Substrate Material ◽  
Microstrip Patch Antenna ◽  
Rf Energy Harvesting ◽  
Radio Frequency Energy ◽  
Microstrip Patch ◽  
Rf Energy ◽  
Coaxial Feed

This paper presents a wideband Microstrip patch antenna with integrated circular slot for radio frequency energy harvesting. The antenna consists of circular slot and stubs with a coaxial feed. The proposed antenna consists of four symmetric gap. It is designed on FR4 lossy epoxy substrate material for 2.65GHz frequency allocated for Wi-max application. Circular slot are integrated inside a square patch of proposed antenna which helpsto increase the bandwidth of antenna.

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 Design of Quad Band Microstrip Patch Antenna for Electromagnetic Energy Harvesting Applications

2019 ◽  
Vol 54 (5) ◽  
Author(s):  
Bilal S. Taha
Keyword(s):  
Energy Harvesting ◽  
Patch Antenna ◽  
Microstrip Patch Antenna ◽  
Rf Energy Harvesting ◽  
Microstrip Patch ◽  
Technical Developments ◽  
Receiving Antenna ◽  
Electromagnetic Energy Harvesting ◽  
Switching Action ◽  
Rf Energy

In this paper, a modified circular microstrip patch antenna is simulated and fabricated for RF energy harvesting applications. Energy harvesting technologies have risen in term of technical developments gradually recently because of the limitation of energy storage and wired power supply. This paper focuses on quad RF energy harvesting in the operating frequency ranges 2.1 GHz, 2.4 GHz, 2.6 GHz and 5.8 GHz emitting from wi-fi, Wimax, LTE, 3G and 4G. The receiving antenna picking up the radio signal in the aforementioned frequencies then converts it from a radiated electromagnetic wave into an alternating signal and, via rectifier, it is converted later into DC voltage. This voltage can be stored inside battery or the load may be fed directly. In this paper, SMD capacitors resistors and Schottky diode model SMS7630-005LF were chosen in the construction of the rectifier circuit due to their low forward voltage between between 0.15 to 0.45 V, fast switching action and small size.

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