scholarly journals HYPERTHERMIA FOR BREAST CANCER TREATMENT USING A SLOTTED MICROSTRIP PATCH ANTENNA ARRAY

2021 ◽  
Vol 16 (61) ◽  
pp. 1135-1155
Author(s):  
Rana Shehata ◽  
Mohamed Badawi ◽  
Nour Eldin Ismail
Keyword(s):  
Breast Cancer ◽  
Cancer Treatment ◽  
Antenna Array ◽  
Patch Antenna ◽  
Breast Cancer Treatment ◽  
Microstrip Patch Antenna ◽  
Microstrip Patch

scholarly journals Microwave Wireless Power Transfer System Based on a Frequency Reconfigurable Microstrip Patch Antenna Array

Energies ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 415
Author(s):  
Haiyue Wang ◽  
Lianwen Deng ◽  
Heng Luo ◽  
Junsa Du ◽  
Daohan Zhou ◽  
...  
Keyword(s):  
Resonant Frequency ◽  
Antenna Array ◽  
Patch Antenna ◽  
Wireless Power Transfer ◽  
Microstrip Patch Antenna ◽  
Market Demand ◽  
Power Transfer ◽  
Wireless Power ◽  
Microstrip Patch ◽  
Wide Range

The microwave wireless power transfer (MWPT) technology has found a variety of applications in consumer electronics, medical implants and sensor networks. Here, instead of a magnetic resonant coupling wireless power transfer (MRCWPT) system, a novel MWPT system based on a frequency reconfigurable (covering the S-band and C-band) microstrip patch antenna array is proposed for the first time. By switching the bias voltage-dependent capacitance value of the varactor diode between the larger main microstrip patch and the smaller side microstrip patch, the working frequency band of the MWPT system can be switched between the S-band and the C-band. Specifically, the operated frequencies of the antenna array vary continuously within a wide range from 3.41 to 3.96 GHz and 5.7 to 6.3 GHz. For the adjustable range of frequencies, the return loss of the antenna array is less than −15 dB at the resonant frequency. The gain of the frequency reconfigurable antenna array is above 6 dBi at different working frequencies. Simulation results verified by experimental results have shown that power transfer efficiency (PTE) of the MWPT system stays above 20% at different frequencies. Also, when the antenna array works at the resonant frequency of 3.64 GHz, the PTE of the MWPT system is 25%, 20.5%, and 10.3% at the distances of 20 mm, 40 mm, and 80 mm, respectively. The MWPT system can be used to power the receiver at different frequencies, which has great application prospects and market demand opportunities.

scholarly journals 2.45 GHz wearable rectenna array design for microwave energy harvesting

2019 ◽  
Vol 14 (2) ◽  
pp. 677 ◽  
Author(s):  
Syahirah Shawalil ◽  
Khairul Najmy Abdul Rani ◽  
Hasliza A. Rahim
Keyword(s):  
Antenna Array ◽  
Patch Antenna ◽  
Wireless Body Area Network ◽  
Microstrip Patch Antenna ◽  
Circuit Board ◽  
Design System ◽  
Area Network ◽  
Dc Voltage ◽  
Rectifier Circuit ◽  
Microstrip Patch

This paper presents a design of a wearable textile microstrip patch rectifying antenna (rectenna) array operating for wireless body area network (WBAN) at the center frequency, <em>f<sub>c</sub></em> of 2.45 GHz.  Precisely, jeans or denim with the relative permittivity, <sub> </sub>= 1.70 and thickness of 1.00 mm is chosen as a substrate attached to SheildIt Super as a conductive material with the thickness, <em>h</em> of 0.17 mm and conductivity of 6.67  10<sup>5</sup> S/m, respectively. In the first stage, a microstrip patch antenna array layout with the inset fed technique is designed and simulated by using the Keysight Advanced Design System (ADS) software.  In the second stage, a wearable textile microstrip patch antenna array is fabricated, integrated, and hidden inside the jeans fabric.  In the third stage, the rectifier circuit layout on the flame retardant-4    (FR-4) printed circuit board (PCB) with the dielectric constant,  = 4.7, thickness, <em>h</em> = 1.6 mm, and loss tangent, <em>δ</em> = 0.018 that can generate radio frequency-direct current (RF-DC) conversion is designed and simulated using the ADS software  Each simulation result and fabrication measurement shows that the designed antenna array characteristics are suitable for an industrial, scientific, and medical radio (ISM) band by having the reflection coefficient, <em>S</em><sub>11</sub> less than -10 decibel (dB) at the respective resonant frequency, <em>f<sub>r</sub>.</em>  Moreover, through simulation, the output DC voltage for the bridge rectifier circuit is from 132 mV to 5.01 V with the corresponding power conversion efficiency (PCE) between 3.48% and 50.20% whereas for the voltage doubler rectifier, the output DC voltage is from 417 mV to 2.91 V with the corresponding PCE between 34.78% and 53.56%, respectively.

scholarly journals Design of Microstrip Patch Antenna Array for 5G Resonate at 3.6GHz

2020 ◽  
pp. 164-170
Author(s):  
Kalsouabe Zoukalne ◽  
Abdoulaye Chaibo ◽  
Mahamoud Youssouf Khayal
Keyword(s):  
Dielectric Constant ◽  
Antenna Array ◽  
Patch Antenna ◽  
Access Point ◽  
Power Line ◽  
Microstrip Patch Antenna ◽  
Microstrip Patch

The paper presents design of microstrip patch antenna array with two elements radiating for 5G C-band access point application resonating at 3.6GHz. Proposed antenna is designed on Rogers RO4350(tm) substrate with 3.54mm thickness and dielectric constant =3.66. The designed antenna has three slots, two placed on each radiating elements and one on the power line. Simulated by using HFSS17.02, the gain of the designed antenna is 9dBi and his bandwidth is 200MHz.Microstrip patch antenna

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