Sima Noghanian

Dr. Sima Noghanian

Ruckus Networks, CommScope (United States), Hickory, North Carolina, USA
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Research Focus & Metrics

Academic Career Length

29Years (1998-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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28 March 2013 in IEEE Communications Surveys & Tutorials
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Journal Article
Closed access
AFArghavan Emami Forooshani
Arghavan Emami Forooshani
SBShahzad Bashir
Shahzad Bashir
DMDavid G. Michelson
David G. Michelson
Sima NoghanianSima Noghanian
Sima Noghanian
Mining and mineral exploration play important roles in the global economy. In mining operations, communication systems play vital roles in ensuring personnel safety, enhancing operational efficiency and process optimization. Over the period 1920-2012, this article surveys the evolution of wireless communications in underground mines, the developments of the underlying technology, and progress in understanding and modeling the underground wireless propagation channel. Current and future trends in technology, applications and propagation modeling are also identified. About ninety relevant references have been reviewed that consider: 1) the emergence of technology and applications, 2) analytical, numerical and measurement-based propagation modeling techniques, and 3) implications of the physical environment, antenna placement and radiation characteristics on wireless communication system design. Affected systems include narrowband, wideband/ultra-wideband (UWB) and multiple-antenna systems. The paper concludes by identifying open areas of research.

20 November 2009 in IEEE Transactions on Biomedical Engineering
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Journal Article
Closed access
CGColin Gilmore
Colin Gilmore
PMPuyan Mojabi
Puyan Mojabi
Amer ZakariaAmer Zakaria
Amer Zakaria
MOMajid Ostadrahimi
Majid Ostadrahimi
CKCameron Kaye
Cameron Kaye
JLJoe LoVetri
Joe LoVetri
In this paper, we describe a 2-D wideband microwave imaging system intended for biomedical imaging. The system is capable of collecting data from 3 to 6 GHz, with 24 coresident antenna elements connected to a vector network analyzer via a 2 × 24 port matrix switch. As one of the major sources of error in the data collection process is a result of the strongly coupling 24 coresident antennas, we provide a novel method to avoid the frequencies where the coupling is large enough to prevent successful imaging. Through the use of two different nonlinear reconstruction schemes, which are an enhanced version of the distorted born iterative method and the multiplicative regularized contrast source inversion method, we show imaging results from dielectric phantoms in free space. The early inversion results show that with the frequency selection procedure applied, the system is capable of quantitatively reconstructing dielectric objects, and show that the use of the wideband data improves the inversion results over single-frequency data.

4 March 2019 in IEEE Transactions on Antennas and Propagation
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Journal Article
Closed access
AAAla Alemaryeen
Ala Alemaryeen
Sima NoghanianSima Noghanian
Sima Noghanian

24 February 2025 in Sensors
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Journal Article
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SAShahid Muhammad Ali
Shahid Muhammad Ali
Sima NoghanianSima Noghanian
Sima Noghanian
ZKZia Ullah Khan
Zia Ullah Khan
SASaeed Alzahrani
Saeed Alzahrani
SASaad Alharbi
Saad Alharbi
RARuwaybih Alsulami
Ruwaybih Alsulami
The development of wearable sensor devices brings significant benefits to patients by offering real-time healthcare via wireless body area networks (WBANs). These wearable devices have gained significant traction due to advantageous features, including their lightweight nature, comfortable feel, stretchability, flexibility, low power consumption, and cost-effectiveness. Wearable devices play a pivotal role in healthcare, defence, sports, health monitoring, disease detection, and subject tracking. However, the irregular nature of the human body poses a significant challenge in the design of such wearable systems. This manuscript provides a comprehensive review of recent advancements in wearable and flexible smart sensor devices that can support the next generation of such sensor devices. Further, the development of direct ink writing (DIW) and direct writing (DW) methods has revolutionised new high-resolution integrated smart structures, enabling the design of next-generation soft, flexible, and stretchable wearable sensor devices. Recognising the importance of keeping academia and industry informed about cutting-edge technology and time-efficient fabrication tools, this manuscript also provides a thorough overview of the latest progress in various fabrication methods for wearable sensor devices utilised in WBAN and their evaluation using body phantoms. An overview of emerging challenges and future research directions is also discussed in the conclusion.

1 September 2011 in IEEE Antennas and Wireless Propagation Letters
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Journal Article
Closed access
MOMajid Ostadrahimi
Majid Ostadrahimi
PMPuyan Mojabi
Puyan Mojabi
CGColin Gilmore
Colin Gilmore
Amer ZakariaAmer Zakaria
Amer Zakaria
Sima NoghanianSima Noghanian
Sima Noghanian
JLJoe LoVetri
Joe LoVetri
Imaging with microwave tomography systems requires both the incident field within the imaging domain as well as calibration factors that convert the collected data to corresponding data in the numerical model used for inversion. The numerical model makes various simplifying assumptions, e.g., 2-D versus 3-D wave propagation, which the calibration coefficients are meant to take into account. For an air-based microwave tomography system, we study two types of calibration techniques-incident and scattered field calibration-combined with two different incident field models: a 2-D line-source and an incident field from full-wave 3-D simulation of the tomography system. Although the 2-D line-source approximation does not accurately model incident field in our system, the use of scattered field calibration with the 2-D line-source provides similar or better images to incident and scattered field calibration with an accurate incident field. Thus, if scattered field calibration is used, a simple (but inaccurate) incident field is acceptable for our microwave tomography system. While not strictly generalizable, we expect our methodology to be applicable to most other microwave tomography systems.

1 July 2015
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Conference Paper
Closed access
MMMilad Mirzaee
Milad Mirzaee
Sima NoghanianSima Noghanian
Sima Noghanian
LWLindsey Wiest
Lindsey Wiest
ICIsaac Chang
Isaac Chang
This paper presents the feasibility of conductive acrylonitrile butadiene styrene (ABS) materials in the fabrication of flexible three-dimensional (3D) antennas using additive manufacturing method. To demonstrate this application a bowtie antenna with coplanar waveguide (CPW) feed structure has been designed and measured. The prototype of the antenna has been fabricated using Makerbot® dual 3D printer and flexible polylactic acid (PLA) and ABS filaments for dielectric and conductive parts of the antenna, respectively. To our knowledge, this is the first reported antenna fabricated with conductive ABS material. The dielectric properties of the PLA and ABS filaments have been measured using Agilent performance probe. The fabricated antenna possesses compact size, light-weight and mechanically flexible structure. In addition it achieves wide bandwidth of 24.18 % at the center frequency of 7.81 GHz.