scholarly journals Miniaturized implantable power transmission system for biomedical wireless applications

2020 ◽  
Vol 7 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Shuoliang Ding ◽  
Stavros Koulouridis ◽  
Lionel Pichon
Keyword(s):  
Reflection Coefficient ◽  
Radiation Pattern ◽  
Absorption Rate ◽  
Specific Absorption Rate ◽  
Power Transmission ◽  
Antenna Design ◽  
Wireless Power ◽  
Specific Absorption ◽  
Wireless Applications ◽  
Power Needs

AbstractIn this paper, a complete wireless power transmission scenario is presented, including an external transmission antenna, an in-body embedded antenna, a rectifying circuit, and a powered sensor. This system operates at the Industrial, Scientific, and Medical bands (902.8–928 MHz). For the antenna design, important parameters including reflection coefficient, radiation pattern, and specific absorption rate are presented. As for the rectifying circuit, a precise model is created utilizing off-the-shelf components. Several circuit models and components are examined in order to obtain optimum results. Finally, this work is evaluated against various sensors' power needs found in literature.

scholarly journals Design and Specific Absorption Rate of 2.6 GHz Rectangular-Shaped Planar Inverted-F Antenna

2018 ◽  
Vol 10 (2) ◽  
pp. 741
Author(s):  
Nurul Inshirah Mohd Razali ◽  
Norhudah Seman ◽  
Nur Ilham Aliyaa Ishak
Keyword(s):  
Reflection Coefficient ◽  
Parametric Study ◽  
Absorption Rate ◽  
Specific Absorption Rate ◽  
Ground Plane ◽  
Excitation Power ◽  
Antenna Gain ◽  
Specific Absorption ◽  
Patch Length ◽  
Cst Microwave Studio

<span lang="EN-US">This article presents the investigation of specific absorption rate (SAR) of a rectangular-shaped planar inverted-F antenna (PIFA) at frequency of 2.6 GHz. Initially, the design antenna is presented with parametric study concerning the dimensions of antenna patch length, shorting plate, ground plane and substrate. The proposed PIFA antenna has -20.46 dB reflection coefficient and 2.383 dB gain. The PIFA’s SAR is correlated with the antenna gain and excitation power. The analysis shows that higher gain contributes to a lower SAR value. While, the higher excitation power causes a higher SAR value. All the design and analysis are performed using the CST Microwave Studio</span>

ESTIMATION OF SPECIFIC ABSORPTION RATE IN THE HUMAN LEG AND TESTICLE DUE TO A METALLIC RING

2015 ◽  
Vol 77 (10) ◽  
Author(s):  
Nazirah Othman ◽  
Noor Asmawati Samsuri ◽  
Mohamad Kamal A Rahim
Keyword(s):  
Radiation Pattern ◽  
Human Body ◽  
Absorption Rate ◽  
Specific Absorption Rate ◽  
Dipole Antenna ◽  
Antenna Radiation ◽  
Specific Absorption ◽  
Antenna Radiation Pattern ◽  
Half Wave ◽  
Metallic Ring

This research evaluates the effect of human body and metallic ring in the vicinity of dipole antenna on antenna radiation pattern and Specific Absorption Rate (SAR). Homogeneous and realistic body models have been considered in the paper. Half wave dipole antenna is used as the excitation source operating at 0.9 GHz and 1.8 GHz. The metallic ring is modelled as conducting objects. The results have shown that the presence of human body near to the antenna significantly distorted the antenna radiation pattern. The antenna gain is decresed approximately 10 dB at 0.9 GH and 25 dB at 1.8 GHz in the direction of body. Nevertheless, the presence of metallic ring do not have any profound effect on antenna radiation pattern due to their size which is relatively small compared to the size of the human body. Additional metallic ring close to the human leg could alter the SAR and the effect varies depending on the size of the rings. The presence of metallic ring significantly increases the averaged 10g SAR inside the testicle by more than 20% at 1.8 GHz.

scholarly journals Design and Analysis of Textile Antenna using EBG Structure

2019 ◽  
Vol 8 (9) ◽  
pp. 2137-2142
Keyword(s):  
Reflection Coefficient ◽  
Band Gap ◽  
Absorption Rate ◽  
Specific Absorption Rate ◽  
Substrate Material ◽  
Impedance Bandwidth ◽  
Electromagnetic Band Gap ◽  
Specific Absorption ◽  
Phantom Model ◽  
Textile Antenna

In this article, the rectangular textile antenna is embedded with E-shape Electromagnetic Band Gap (EBG) Structure for reduction of SAR. It is positioned on human phantom model. The E-shape EBG array is positioned between ground and patch of rectangular textile antenna. It is resonant at 2. 4GHz.The substrate material for the rectangular Textile antenna is jeans cloth. The Specific Absorption Rate (SAR), Reflection coefficient and Impedance Bandwidth are obtained with and without EBG structure using HFSS software and also measured.

Sign in / Sign up

Export Citation Format

Share Document