ORCID Profile
0000-0002-6351-8136
Current Organisations
University of Queensland
,
LicenSys Pty Ltd
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Publisher: IEEE
Date: 09-2015
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2021
Publisher: Public Library of Science (PLoS)
Date: 13-04-2016
Publisher: IEEE
Date: 05-2010
Publisher: Science Alert
Date: 02-2010
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2014
Publisher: AIP Publishing
Date: 19-06-2017
DOI: 10.1063/1.4986788
Abstract: We report an unexplored reconfigurable antenna development technique utilizing the concept of temperature variable electromagnetic properties of water. By applying this physical phenomena, we present highly efficient water-substrate based antennas whose operating frequencies can be continuously tuned. While taking the advantage of cost-effectiveness of liquid water, this dynamic tuning technique also alleviates the roadblocks to widespread use of reconfigurable liquid-based antennas for VHF and UHF bands. The dynamic reconfigurability is controlled merely via external thermal stimulus and does not require any physical change of the resonating structure. We demonstrate dynamic control of omnidirectional and directional antennas covering more than 14 and 12% fractional bandwidths accordingly, with more than 85% radiation efficiency. Our temperature control approach paves the intriguing way of exploring dynamic reconfigurability of water-based compact electromagnetic devices for non-static, in-motion and low-cost real-world applications.
Publisher: Institution of Engineering and Technology (IET)
Date: 07-2013
DOI: 10.1049/EL.2013.1476
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 06-2020
Publisher: IEEE
Date: 07-2015
Publisher: IEEE
Date: 12-2013
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 12-2021
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2014
Publisher: IEEE
Date: 12-2015
Publisher: Institution of Engineering and Technology (IET)
Date: 2010
DOI: 10.1049/EL.2010.0409
Publisher: Institute of Electronics, Information and Communications Engineers (IEICE)
Date: 2010
DOI: 10.1587/ELEX.7.1629
Publisher: Springer Science and Business Media LLC
Date: 04-02-2016
DOI: 10.1038/SREP20459
Abstract: Intracranial hemorrhage is a medical emergency that requires rapid detection and medication to restrict any brain damage to minimal. Here, an effective wideband microwave head imaging system for on-the-spot detection of intracranial hemorrhage is presented. The operation of the system relies on the dielectric contrast between healthy brain tissues and a hemorrhage that causes a strong microwave scattering. The system uses a compact sensing antenna, which has an ultra-wideband operation with directional radiation and a portable, compact microwave transceiver for signal transmission and data acquisition. The collected data is processed to create a clear image of the brain using an improved back projection algorithm, which is based on a novel effective head permittivity model. The system is verified in realistic simulation and experimental environments using anatomically and electrically realistic human head phantoms. Quantitative and qualitative comparisons between the images from the proposed and existing algorithms demonstrate significant improvements in detection and localization accuracy. The radiation and thermal safety of the system are examined and verified. Initial human tests are conducted on healthy subjects with different head sizes. The reconstructed images are statistically analyzed and absence of false positive results indicate the efficacy of the proposed system in future preclinical trials.
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 04-2015
Publisher: IEEE
Date: 07-2011
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 02-2019
Publisher: InTech
Date: 05-06-2013
DOI: 10.5772/53283
Publisher: IEEE
Date: 03-2014
Publisher: Institution of Engineering and Technology (IET)
Date: 02-2014
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2014
Publisher: Springer Science and Business Media LLC
Date: 19-10-2010
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 09-2014
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2012
Publisher: IEEE
Date: 09-2013
Publisher: Institution of Engineering and Technology (IET)
Date: 06-2014
DOI: 10.1049/EL.2014.0616
Publisher: Institution of Engineering and Technology (IET)
Date: 12-2015
DOI: 10.1049/EL.2015.2763
Publisher: IEEE
Date: 12-2011
Publisher: IEEE
Date: 06-2014
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 07-2015
Publisher: IEEE
Date: 12-2013
Publisher: IEEE
Date: 11-2014
Publisher: Institution of Engineering and Technology (IET)
Date: 02-2014
DOI: 10.1049/EL.2013.3909
Publisher: IEEE
Date: 07-2014
Publisher: Institute of Electronics, Information and Communications Engineers (IEICE)
Date: 2010
Publisher: InTech
Date: 20-07-2011
DOI: 10.5772/16913
Publisher: Science Alert
Date: 09-2011
Publisher: The Electromagnetics Academy
Date: 2012
DOI: 10.2528/PIER12032604
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 02-2023
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2010
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2016
Publisher: Wiley
Date: 22-04-2011
DOI: 10.1002/MOP.26044
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2019
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 07-2016
Publisher: IEEE
Date: 07-2013
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2016
Publisher: Bentham Science Publishers Ltd.
Date: 11-2010
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2013
Publisher: IEEE
Date: 10-2009
Publisher: IEEE
Date: 08-2009
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 09-2020
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2016
Publisher: Walter de Gruyter GmbH
Date: 08-2013
Abstract: The design of a printed compact planar antenna of asymmetrical structure with ultra wide bandwidth is described and investigated in this paper. The antenna provides more than 114% impedance bandwidth below VSWR 2 (from 3.3 to more than 12 GHz) with a center frequency of 7.65 GHz thus it covers the bandwidth requirement for portable UWB wireless device applications. The structure of the asymmetric proposed antenna is very simple and composed of a small hexagonal shaped patch with two asymmetrical coplanar ground planes. It occupies an area of only 20 × 24.5 mm2 when printed on one side of an FR4 substrate with a thickness of 1.6 mm.
Publisher: MDPI AG
Date: 15-02-2019
DOI: 10.3390/S19040800
Abstract: Current glucose monitoring methods for the ever-increasing number of diabetic people around the world are invasive, painful, time-consuming, and a constant burden for the household budget. The non-invasive glucose monitoring technology overcomes these limitations, for which this topic is significantly being researched and represents an exciting and highly sought after market for many companies. This review aims to offer an up-to-date report on the leading technologies for non-invasive (NI) and minimally-invasive (MI) glucose monitoring sensors, devices currently available in the market, regulatory framework for accuracy assessment, new approaches currently under study by representative groups and developers, and algorithm types for signal enhancement and value prediction. The review also discusses the future trend of glucose detection by analyzing the usage of the different bands in the electromagnetic spectrum. The review concludes that the adoption and use of new technologies for glucose detection is unavoidable and closer to become a reality.
Publisher: Science Alert
Date: 09-2011
Publisher: Informa UK Limited
Date: 11-09-2012
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2020
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 09-2020
Location: Bangladesh
No related grants have been discovered for Ahmed Toaha Mobashsher.