scholarly journals Design, Simulation and Analysis of Wearable 2.4 GHz U Shape Slotted Microstrip Patch Antenna for Wireless Body Area Network

2021 ◽  
Vol 11 (3) ◽  
pp. 1
Author(s):  
Umme Afruz ◽  
Md. Ahasan Kabir
Author(s):  
Syahirah Shawalil ◽  
Khairul Najmy Abdul Rani ◽  
Hasliza A. Rahim

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.


2021 ◽  
Author(s):  
Sesha Vidhya S ◽  
Rukmani Devi S. ◽  
Shanthi K. G.

Abstract Wireless Body Area Network (WBAN) is the booming field incorporating the recent wireless sensor networks and miniaturized wearable devices. There are growing appeals for WBANs in medical and non-medical applications due to its flexibility and portability. This paper proposes an Ultra Wide Band (UWB)Microstrip patch antenna loaded with modified Split Ring Resonator (SRR) and Defective Ground Structure (DGS) for WBAN applications. The proposed antenna has a modified SRR structure and DGS at the ground and a patch scratched over the surface of the Arlon substrate with 1.6mm thickness. The structure is partially grounded and also loaded with meta-material to reduce the back-body radiations. The performance metrics of the proposed antenna are analysed and compared with different antenna configurations. The proposed UWB Microstrip patch antenna operating at 5.2GHz yielded a return loss of -21.12dB, VSWR of 1.19, higher efficiency and less Specific Absorption Rate (SAR) making it the best choice for biomedical applications.


2017 ◽  
Vol 59 (4) ◽  
pp. 761-766 ◽  
Author(s):  
Guo-Ping Gao ◽  
Bin Hu ◽  
Xiao-Long Tian ◽  
Qing-Lin Zhao ◽  
Bing-Tao Zhang

2018 ◽  
Vol 7 (4.7) ◽  
pp. 167
Author(s):  
S Krishna Veni ◽  
G S K Gayatridevi

The Body Area Network (BAN) is a wireless technology in combination with wearables. It is a monitoring system which is mainly used in health care, children tracking, in car-assistance and sports science etc.  For wireless monitoring and continuous data transfer, an antenna needs to be integrated with the Body Area Network. This paper explains the different designs of microstrip patch antennas which operates at 2.4GHz and are more suitable for BAN. The simulation results in terms of return loss, gain and radiation pattern are presented.  


Author(s):  
Shahid M Ali ◽  
Varun Jeoti ◽  
Tale Saeidi ◽  
Wong Peng Wen

This paper introduces the design of compact microstrip patch antenna for wireless body area network (WBAN) applications at ISM 2.4 GHz. The design consists of a radiating patch on one side of the substrate and a ground plane is located on the other side of the substrate. The antenna is fed through an inset transmission line and then loaded by two triangles, and shorting pins on both sides of the radiating patch to lengthen the path for current, as result it reduced the overall size. The dimensions of radiating patch antenna are 62 mm<em>× </em>43 mm <em>× </em>1.67 mm. By locating the proposed antenna On and Off body communication, it can maintain compact and stable far field radiation characteristics and negligible specific absorption rate (SAR). Furthermore, high efficiencies of about 53 % and 46% are obtained during off and on body, which is higher than recent similar works in the literature. The simulated results showed a good agreement with the measured results. Owing to the acceptable results, the proposed design can be a reliable candidate for WBAN applications at ISM band.


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