An artificial magnetic conductor‐backed monopole antenna to obtain high gain, conformability, and lower specific absorption rate for WBAN applications

2020 ◽  
Vol 30 (12) ◽  
Author(s):  
Bidisha Hazarika ◽  
Banani Basu ◽  
Arnab Nandi
Keyword(s):  
Absorption Rate ◽  
Specific Absorption Rate ◽  
High Gain ◽  
Monopole Antenna ◽  
Magnetic Conductor ◽  
Specific Absorption ◽  
Artificial Magnetic Conductor

Novel monopole antenna on a single AMC cell for low SAR

2020 ◽  
Vol 12 (9) ◽  
pp. 825-830
Author(s):  
G. Bulla ◽  
A. A. de Salles ◽  
C. Fernández-Rodríguez
Keyword(s):  
Health Risks ◽  
Absorption Rate ◽  
Specific Absorption Rate ◽  
Mobile Terminal ◽  
Monopole Antenna ◽  
Radiation Efficiency ◽  
Magnetic Conductor ◽  
Specific Absorption ◽  
Artificial Magnetic Conductor

AbstractThe design, simulations, and optimized results for a novel low specific absorption rate (SAR) monopole antenna on a single artificial magnetic conductor (AMC) cell are described in this paper. Simulated results show a reduction close to 70% in the 1 g ps SAR for the developed monopole antenna with the AMC in comparison to the monopole antenna without AMC. This allows higher radiation efficiency, battery drain reduction as well as mobile terminal user health risks reduction.

scholarly journals Textile Diamond Dipole and Artificial Magnetic Conductor Performance under Bending, Wetness and Specific Absorption Rate Measurements

2015 ◽  
Vol 24 (3) ◽  
pp. 729-738 ◽  
Author(s):  
K. Kamardin ◽  
M. K. A. Rahim ◽  
P. S. Hall ◽  
N. A. Samsuri ◽  
M. E. Jalil ◽  
...  
Keyword(s):  
Absorption Rate ◽  
Specific Absorption Rate ◽  
Magnetic Conductor ◽  
Specific Absorption ◽  
Artificial Magnetic Conductor

A compact flexible textile artificial magnetic conductor-based wearable monopole antenna for low specific absorption rate wrist applications

2020 ◽  
pp. 1-7 ◽  
Author(s):  
Mohamed El Atrash ◽  
Mahmoud A. Abdalla ◽  
Hadia M. Elhennawy
Keyword(s):  
Absorption Rate ◽  
Specific Absorption Rate ◽  
Integrated Design ◽  
Monopole Antenna ◽  
Human Hand ◽  
Total Efficiency ◽  
Magnetic Conductor ◽  
Specific Absorption ◽  
Hand Model ◽  
Human Hand Model

Abstract A compact monopole antenna backed with a 1 × 2 textile-based artificial magnetic conductor (AMC) array is proposed. Textile was mainly selected for the AMC materials according to an investigation that took place between different AMC substrate materials, where it was settled that the textile one displayed the highest antenna gain and efficiency. The monopole antenna and the AMC, distanced apart by 5 mm, combined form the integrated design. It operates at 2.4 GHz, which was particularly selected as the resonant frequency for wirelessly sending the subject's symptoms data via Wi-Fi, with realized gain and total efficiency of 6.76 dBi and 88.4%, respectively, in free space. Separated by 3 mm from the specific anthropomorphic mannequin human hand model, it displays a realized gain and total efficiency of 4.06 dBi and 44.39%, respectively, in a flat condition. Furthermore, it exhibits a specific absorption rate (SAR) of 1.8 W/kg averaged over 10 g of tissue. When bent over the human hand model, it performs well and exhibits a maximum SAR of 0.521 and 0.406 W/kg, averaged over 1 and 10 g of tissues, respectively. As a result of such outcomes, the proposed integrated design can be nominated for wearable hand/wrist and Wi-Fi applications.

scholarly journals SAR Evaluation of Metallic Loop-like Accessory Effect of Broadband Wearable Planar Monopole Textile Antenna

2018 ◽  
Vol 7 (3) ◽  
pp. 17-22
Author(s):  
H. H. Zainal ◽  
H. A. Rahim ◽  
P. J. Soh ◽  
H. Lago ◽  
K. N. A. Rani ◽  
...  
Keyword(s):  
Numerical Analysis ◽  
Absorption Rate ◽  
Specific Absorption Rate ◽  
Monopole Antenna ◽  
Specific Absorption ◽  
Textile Antenna ◽  
The Common ◽  
Cst Microwave Studio

This paper presents the investigation influence of the common metallic loop like accessory on Specific Absorption Rate (SAR) averaged over 10g and 1 g tissue.The simulations were made by means CST Microwave Studio software at frequencies 2.45GHz and 2.6GHz. Numerical analysis conducted using broadband textile monopole antenna (TM) with variations of orientation and distance showed that the SAR value increased when the antenna horizontally polarized.This is up to 80% more than vertically polarized TM placed closest item to 2mm.

A wideband, compact, high gain, low-profile, monopole antenna using wideband artificial magnetic conductor for off-body communications

2021 ◽  
pp. 1-10
Author(s):  
Bidisha Hazarika ◽  
Banani Basu ◽  
Arnab Nandi
Keyword(s):  
High Gain ◽  
Monopole Antenna ◽  
Impedance Bandwidth ◽  
Magnetic Conductor ◽  
Artificial Magnetic Conductor ◽  
Reflection Phase ◽  
Low Profile ◽  
Independent Behavior ◽  
Integrated Antenna ◽  
Body Loading

Abstract A wideband staircase pattern defected ground monopole antenna integrated with an artificial magnetic conductor (AMC) reflector has been proposed for C-band (4–8 GHz) and ITU band (8.01–8.5 GHz) applications. The integrated antenna consists of a staircase antenna at top, a 2 × 2 AMC reflector at the bottom and an air substrate as gap between them. The AMC offers 18.5% ± 90° reflection phase bandwidth from 6.10 to 7.32 GHz. The AMC layer has achieved mu-negative properties in the designated band. The AMC proffers polarization independent behavior in the respective frequency band depicting robustness in AMC reflection phase characteristics. The integrated antenna has offered a wide impedance bandwidth of 2.78 GHz (42.8% at 6.5 GHz and 34.1% at 8.15 GHz) due to the defected ground monopole. The integration of wideband AMC beneath the staircase monopole antenna alters the out of phase radiation to in-phase planer pattern which enhances the peak gain up to 9.7 dB. It reduces the 1-g averaged specific absorption rate to 0.223 and 0.324 W/kg at the two designated bands. The structure maintains almost similar bandwidth and gain due to artificial human body loading.

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