scholarly journals An Optimized Feed Hexagonal Antenna with Defective Ground Plane for UWB Body Area Network Application

2021 ◽  
Vol 20 (5) ◽  
pp. 261-267
Author(s):  
Shaktijeet Mahapatra ◽  
Mihir Narayan Mohanty
Keyword(s):  
Ground Plane ◽  
Research Work ◽  
Ultra Wideband ◽  
Body Area Network ◽  
Area Network ◽  
Body Area ◽  
Antenna Structure ◽  
High Data ◽  
Network Application ◽  
Algorithm Search

Body area network has facilitated monitoring, authentication and security through sensors or microstrip antenna with specified frequency. The purpose of this research work is to propose a simplified way to search for an optimal length of the inset for edge feeding using the Evolutionary Algorithm search by minimizing the reflection coefficient using ANSYS HFSS. The optimal inset length resulted in an antenna with better radiation efficiency and wider bandwidth. The antenna structure is 70x70x1.6 mm3, with a modified ground. The purpose of this antenna is communication in Ultra-wideband and works in 5.4, 8.1, and 9.8 GHz bands respectively. The resonant bandwidth measured are 1.02, 0.28, 0.12 GHz, respectively. Simultaneously the achievable gains are 3.18, 7.81, and 19.95 dB, respectively in free space. As the antenna is of wearable type, the front-to-back ratio evaluated for each band is 2.31, 7.01, and 13.91 respectively. The results of the fabricated antenna agree with the simulated results. The specific absorption rates at resonant frequencies were observed to be 0.3, 0.56 and 0.24 W/kg respectively when antenna is placed on a human tissue model. The antenna is useful for on-body communication at ISM band, and high data rate off-body communication in body area networks.

scholarly journals Integrating Ultra-Wideband and Free Space Optical Communication for Realizing a Secure and High Throughput Body Area Network Architecture Based on Optical Code Division Multiple Access

2021 ◽  
Author(s):  
Jawad Mirza ◽  
Waqas Imtiaz ◽  
Salman Abdul Ghafoor
Keyword(s):  
Health Care ◽  
Care Center ◽  
Ultra Wideband ◽  
Body Area Network ◽  
Area Network ◽  
Body Area ◽  
Health Care Center ◽  
High Data ◽  
Data Rates ◽  
Code Division Multiple

Abstract Nodes in a body area network (BAN) are miniature wearable or implantable battery-powered wireless sensors which continuously transmit real time vital physiological data of a patient to remote health-care center while remaining in close proximity to the human body. Therefore, BAN nodes should have the features of high data rates and low transmit powers in order to protect the human body, environment and bio-medical equipment from harmful exposure of electromagnetic radiations and electromagnetic interference (EMI). Ultra-wideband (UWB) signals have low allowable transmission power and high data rates. Therefore, we propose a low cost, low powered and secure optical body area network (OBAN) composed of four UWB-BAN nodes each transmitting at a data rate of 30 Mbps. At the control node, UWB signals from UWB-BAN nodes are encoded using spectral amplitude coding-optical code division multiple access (SAC-OCDMA) scheme and the combined signal is transmitted over free space optics (FSO) channel towards remote health-care center. At the health-care center, the combined signal is decoded and UWB signal of each UWB-BAN node is photodetected for analysis of patient's data. Log-Normal channel model is considered between control node and the health-care center. The signal received from each UWB-BAN after propagation through the FSO channel is analyzed through Bit error rate (BER) results. It was observed that the proposed architecture requires the UWB-BAN nodes to have low receiver sensitivities with the added benefits of cost-efficiency and data security.

Characteristic of Ultra Wideband Body Area Network Channel

2015 ◽  
Vol 21 (10) ◽  
pp. 3194-3197
Author(s):  
Sanit Teawchim ◽  
Sathaporn Promwong
Keyword(s):  
Ultra Wideband ◽  
Body Area Network ◽  
Area Network ◽  
Body Area ◽  
Network Channel

Power controlled FM-UWB system with a wideband RF carrier for body area network applications

2014 ◽  
Vol 6 (5) ◽  
pp. 537-541 ◽  
Author(s):  
Heejong Lee ◽  
Seok-Jae Lee ◽  
Won-Sang Yoon ◽  
Sang-Min Han
Keyword(s):  
Data Transmission ◽  
Peak Power ◽  
Wireless Body Area Network ◽  
Ultra Wideband ◽  
Digital Data ◽  
Body Area Network ◽  
Area Network ◽  
Body Area ◽  
Network Applications ◽  
Transmission Capability

An FM-ultra-wideband (UWB) system with a wideband RF carrier (WRC) is proposed for wireless body area network applications. The proposed system can control the channel power by means of an adjustable carrier bandwidth (BW), while the conventional one with a CW carrier (CWC) makes use of peak power control. The implemented WRC system performances have been evaluated for the WRC generation and digital data transmission. In addition, transmission performances have been compared with that of a conventional CWC system by bit-error-rate (BER) tests. For random data of a 29−1 pattern at a data-rate of 64 kbps, in spite of the flexible carrier BW, the WRC system has presented excellent transmission capability compared with that of the CWC system.

scholarly journals Analysis of wave propagation for wireless implantable body area network application

2019 ◽  
Vol 15 (2) ◽  
pp. 936
Author(s):  
N. H. Ramli ◽  
Haryati Jaafar ◽  
Y. S. Lee ◽  
Hazila Othman
Keyword(s):  
Wave Propagation ◽  
Wireless Body Area Network ◽  
Human Hand ◽  
Body Area Network ◽  
Area Network ◽  
Body Area ◽  
Implantable Antennas ◽  
Voxel Model ◽  
Network Application ◽  
Enhancement Technologies

The enhancement technologies of wireless body area network improved the health monitoring system. Previous work have been designed the implantable chip printed antenna at 4.8 GHz. This paper is continuing the investigation where the antenna wave propagation in term of attenuation and polarization were studied. The antenna is implanted in human hand voxel model from CST Microwave Studio Software. The performances of the antenna are evaluated in term of return loss, gain and efficiency. Results show that the rate attenuation for the propagation is approximately 0.16 dB up to 0.42 dB. All the results will be guidelines in designing implantable antennas in futures.

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