RESEARCH

The WAMI Center typically supports 40-45 graduate student research assistants each year, along with approximately 10 undergraduate student researchers. The Center's annual research productivity includes approximately 60 journal and conference publications, and 10-15 MS/PhD graduates.

Current/Recent Projects




Collaborative Research: A Systems-Centric Foundation for Electrical and Computer Engineering Education

Principal Investigator: S. Thomas, Co-P.I. T. Weller,

Granting Agency: The National Science Foundation.

Development of systems-centric, hands-on learning modules for the introductory circuits course. This is a joint project with U. Hawaii, U. Minnesota, U. Vermont and Northern Arizona U.


GOALI Collaborative Research: 3D RF Microsystems using Direct Digital Manufacturing Technology,

Principal Investigator: T. Weller, Co-P.I. C. Lusk (Mechanical Engineering) and K. Church (Sciperio),

Granting Agency: The National Science Foundation.

Investigate new 3D microwave systems using digital manufacturing techniques. This is a collaborative project with Georgia Tech (J. Papapolymerou).

 

Integrated Antenna System Design for High Clutter and High Bandwidth Channels Using Advanced Propagation Models,

Principal Investigator: T. Weller,

Granting Agency: National Science Foundation.

The objective is to investigate adaptive antenna systems for modeling for high clutter environments in machine-to-machine applications.

 

Rapid Design of Optimal Digitally-Manufactured 3D Electrically-Small Antennas,

Principal Investigator: T. Weller,

Granting Agency: Central Intelligence Agency.

Investigate design and optimization tools for digitally manufactured small antennas.

 

3D Formable RF Materials,

Principal Investigator: T. Weller,

Granting Agency: Army Research Office.

Microwave characterization of materials used in 3D printed RF electronics.

 

80-100 GHz Communications System,

 Principal Investigator: T. Weller,

Sponsor: Harris.

The purpose of this project is to design and demonstrate a 80-100 GHz wideband communications system.

 

3D Fabricated Low Cost Phased Array Technology,

Principal Investigator: T. Weller,

Granting Agency: Office of Naval Research.

Develop a 2-18 GHz current sheet array unit cell using 3D direct digital manufacturing.

 

Three-Dimensional (3D) Structural Radio Frequency (RF) Electronics,

Principal Investigator: T. Weller,

Granting Agency: Air Force Research Lab.

Investigate a 2.45 GHz phased array module using direct print additive manufacturing techniques.

 

Improving the Communications Performance and Reliability of In Vivo Wireless Medical Devices

Principal Investigator: Gitlin. Initially funded by the NSF and with continued funding from Innovatia Medical Systems, this project has the goal of advancing novel wireless communications technologies that enable high performance, reliable communications, and the ability to overcome link and/or power failures among networked in vivo medical devices. A prototypical MARVEL robotic camera is being designed with high-definition video and OFDM digital communications to replace the earlier VGA video and analog communications device.

 

Channel Modeling and Optimized Radio Access Design for In Vivo Wireless Communication

 

Principal Investigator: ---Arslan and Gitlin. Funded by QNRF. This project is directed towards developing reliable signal processing and wireless communications technologies and methodologies to address the major challenges of the in vivo communication channel that will be faced by emerging wireless body area networks. Channel models have been derived to describe the in vivo channel and reported on in many publications including a recently accepted survey paper in an IEEE publication and an invited book chapter is being finalized.

 

Holistically Application-Aware Multi-dimensional Cognitive Radio (HAMCR)

Principal Investigator: ---Arslan and Gitlin [and Haas (Cornell). Funded by NSF. HAMCR is an application-aware cognitive radio with new technology that enables substantial growth in the capacity of wireless networks, with support for diverse applications, without additional spectrum. HAMCR maximizes spectrum utilization by trading off the spectral resource allocations of connections for the application-level QoS, while still maintaining acceptable levels of QoS for the users of the underlying applications, thus satisfying an increased number of users in times of shortage of spectral resources. This work led to several papers and conference presentations and was the subject of Chao He’s PhD dissertation.

 

Vectorcardiogram (VCG) system.

 Funded by Jabil Circuit and Florida High Tech Corridor. The Vectorcardiogram presents a three dimensional (3D) view of the depolarization (depolarization cycle) of the heart by calculating the magnitude and direction of the electrical signals emanated from the heart and provides the same information as the “gold standard” Electrocardiogram (ECG). From the 3-lead VCG the 12-lead ECG may be created via a 3x12 matrix transformation. The principal advantage of the VCG is that it provides the same information as the 12-lead ECG but with a smaller number of leads. The project goal is to enable real-time 24x7 diagnostic-quality monitoring of the heart’s electrical with a small form factor VCG that can be worn on the body of the patient. This breakthrough capability can revolutionize the field of cardiac rhythm management. Progress has been made in dramatically reducing the size of the research model, introduction of “dry” electrodes (replacing the wet electrodes), and compensation for rotational and translational offsets in repositioning of the VCG device. Work has begun on deep machine learning with the goal of predicting cardiac events.

 

Application of Photosynthetic Proteins in a Field-Effect Transistor for Low Light Intensity Detection,

Principal Investigator: A. Takshi, Co-P.I. J. Wang,

Granting Agency: National Science Foundation.

The goal is to employ proteins from photosynthetic cells to develop a field effect phototransistor. Due to the unique properties of photon absorption and charge separation in photosynthetic proteins, theoretically the proteins are more sensitive to photons than conventional semiconductors.

 

Acoustic Emission Technology on a Chip,

Principal Investigator: J. Wang, Co-PI R. Guldiken,

WavesinSolids, LLC through National Science Foundation (NSF) SBIR Phase I and Phase IB Program.

The goal of this work is to thoroughly investigate the folded-beam MEMS resonator with interdigitated capacitive transducers to address the current limitations of MEMS acoustic emission sensors such as low sensitivity.

 

Development and evaluation at the laboratory level of biosensors for the diagnosis of all dengue virus serotypes based on the Non-Structural protein- 1 (NS-1),

Principal Investigator: J. Wang,

Granting Agency: the Administrative Department of Science, Technology and Innovation–COLCIENCIAS, Colombia.

The aim of this work is to develop lab-on-a-chip devices that can be used as immunoassays for all dengue virus serotypes based on the Non-Structural protein-1 (NS-1) for accurate and early diagnosis of dengue infection.

 

Research and Training Internship for Enhanced Microwave and Millimeter-Wave Circuit Design, Characterization and Modeling,

Principal Investigator: J. Wang,

Granting Agency:  Modelithics, Inc. and Florida High Tech Corridor. 

Research and training grant for development and verification of improved models as well as modeling and characterization techniques for high frequency transistors.


Pathways to Market of Piezoelectric Elastomer Composites for Additive Manufacturing of Flexible 3D Conformal Acoustic Emission and Ultrasonic Transducer Arrays, 

Principal Investigator: J. Wang,

Grant Agency: National Science Foundation.

This program will conduct a thorough market analysis and assessment of piezoelectric-nanocomposite elastomer materials that enable customized design, injection molding or additive manufacturing and ease of deployment of a new class of flexible and 3D conformal ultrasonic transducer arrays. Due to the use of lightweight, low-cost, and piezoelectric composites, enhanced piezoelectric coupling efficiency, improved signal to noise ratio, and tailored frequency responses can be readily achieved for non-destructive structural health monitoring, wearable and point-of-care health diagnosis, and so on. 

 

RF Nanomaterials and Transducers Fund,

Principal Investigator: J. Wang,

Granting Agency:  USF Research Foundation, Inc.

The objective is to support research in RF functional nanomaterials and transducers technologies with initial focus towards development of novel soft magnetic nanomaterials for radio frequency and microwave devices such as near field communication (NFC), near-field and far-field wireless power transfer..


CAREER: Microfluidically Loaded Highly Reconfigurable Compact RF Devices,

Principal Investigator: G. Mumcu,

Granting Agency: National Science Foundation (NSF).

This CAREER effort investigates the novel interdisciplinary concept of microfluidically loaded reconfigurability within the context of RF antennas, filters, and imaging systems. The project proposes unique RF device and imaging array implementations that provide unprecedented reconfigurability, high power handling capability, lower circuit complexity and cost-reductions as compared to the existing technologies.

 

EAGER: Reconfigurable Textile Antennas and RF Electronics Using Microfluidic Techniques,

Principal Investigator: G. Mumcu,

Granting Agency: National Science Foundation (NSF).

This project focuses on a novel direction for efficient spectrum utilization of body worn RF front-ends by integration of highly functional textile antennas with microfluidics for reconfiguration.

 

Remote Environmental Monitoring and Diagnostics in the Perishable Supply Chain

Principal Investigator: C. Nunes, Co-P.I. I. Uysal,

Granting Agency: US Army Natick Soldier RD&E Center.

Using RFID sensor technology to monitor freshness of army rations and develop smart distribution systems. This is a joint project with University of Florida.

 

Testing and Calibration of RF Temperature Sensors

Principal Investigator: I. Uysal,

Granting Agency: RFID Innovative Solutions LLC. Testing and calibration of ISO18000-7

Temperature Sensors developed by RFID IS LLC.

 

Reducing Strawberry Waste and Losses in the Postharvest Supply Chain via Intelligent Distribution Management

Principal Investigator: I. Uysal, Co-P.I. C. Nunes,

Granting Agency: Walmart Foundation.

Temperature mapping of the cold chain with wireless sensors to enable smart distribution practices

 

Increasing Consumption of Specialty Crops by Enhancing their Quality and Safety

Principal Investigator: C. Nunes, Co-P.I. I. Uysal,

Granting Agency: US Department of Agriculture.

Algorithmic modeling of the effects of environmental variables like temperature and humidity on specialty crops.

 

Calibration and Validation of DeltaTrak’s Product Emulation Model

Principal Investigator: I. Uysal,

Granting Agency: DeltaTrak Inc.

Testing a product temperature emulation model developed by DeltaTrak to predict product temperatures by measuring ambient temperatures.  This is a joint project with University of Florida.

 

Time-temperature Indicator Characterization

Principal Investigator: I. Uysal,

Granting Agency: DeltaTrak Inc.

Characterizing environmental behavior of TTI labels to construct a temperature-stage curve for response analysis and time prediction.

 

Algoithmic prediction and recognition of human activity and falls from wireless accelerometer data

Principal Investigator: I. Uysal,

Granting Agency: RFID Innovative Solutions LLC. 

To develop a machine learning algorithm which would automatically recognize falls and other human activity based on measured RFID accelerometer data.

 

Algorithmic estimation of product temperatures using wireless sensors

Principal Investigator I. Uysal,

Granting Agency: Deltatrack Inc.

To develop and assess an algorithm to correlate ambient air temperatures with the product temperature for more accurate wireless monitoring.

 

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Collaborative Project: MUSE – An Undergraduate Learning Model for Complex-Engineered Systems
Principal Investigator: T. Weller along with J. Frolik (U. Vermont), P. Flikkema (N. Arizona U.) and W. Shiroma (U. Hawaii)
Granting Agency: The National Science Foundation

The objective of this project is the development of a new undergraduate EE curriculum focused on complex engineering systems. A course jointly-developed by the participating universities will focus on multiple facets of wireless sensor networks. A follow-on course provides students the opportunity to conduct senior design projects on this topic using a team-based approach.


Functional Magnetic Polymer Nanocomposite Films for Tunable RF Device Applications
Principal Investigator: T. Weller
Co-Principal Investigator: H. Srikanth and J. Wang
Granting Agency: The National Science Foundation

The objective of this project is to develop nanocomposite polymer substrates for microwave applications.


Non-Linear Device Applications of Nano-Patterned Barium Strontium Titanate Thin Films
Principal Investigator: T. Weller
Co-Principal Investigator: A. Kumar and M. Smith (Raytheon)
Granting Agency: The National Science Foundation (ECS 0601536)

The purpose of this project is basic research on the fabrication and characterization of miniaturized non-linear BST microwave devices.


Low Cost Omni Antenna
Principal Investigator: T. Weller
Granting Agency: Raytheon

Design of a 4-6 GHz low cost steerable omni-directional antenna.


Compact Reconfigurable Channel Emulator
Principal Investigator: T. Weller
Granting Agency: Goodrich

Development of a laboratory-scale instrument for characterization of wireless sensor networks.


Radiometric Sensors as Non-invasive Approach to Health Monitoring
Principal Investigator: T. Weller
Granting Agency: Raytheon

Analysis and modeling of the dielectric properties of human tissue.


NIRT: Nanocrystalline Thin Film Diamond for MEMS and Biomedical Applications
Principal Investigator: A. Kumar
Co-Principal Investigator: T. Weller
Granting Agency: The National Science Foundation

Diamond thin films will be developed for use in high-power, high-reliability RF MEMS phase shifters.


Communication System and Network Design for Unmanned Systems: A Feasibility Study for Autonomous Underwater Vehicles
Principal Investigator: K. Valavanis and H. Arslan

Research and feasibility student for developing AUV and communication of the AUV with each other using underwater acoustic.


Interference Cancellation and Avoidance for OFDM based Future Generation Wireless Cellular Communications Systems
Principal Investigator: H. Arslan

Understanding and handling various interference sources in 4-G cellular systems.


Introducing Advanced Signal Analysis tools to Spectrum Analyzers
Principal Investigator: H. Arslan

Enhancing the spectrum analyzer functionality significantly by introducing advanced time-frequency analysis.


Managing and Handling Co-channel Interference in Multi-carrier Signaling Based Broadband Wireless Communication Systems
Principal Investigator: H. Arslan

Introducing cognitive networks and adaptive techniques to manage interference in cellular networks.


Research and Development of Software Defined Radio Test-bed and Mobile WiMAX OFDMA Transceivers
Principal Investigator: H. Arslan

Research and development of software defined radio test-bed and using this platform for developing enhanced mobile WiMAX transceivers.


Ultra-wideband Channel Modeling for Disaster and Emergency Rescue
Principal Investigator: H. Arslan

Modeling ultra wideband communication channel in disaster environments.


Prediction of Phase Noise in Amplifiers and Frequency Multipliers
Principal Investigator: L. Dunleavy
Granting Agency: TRAK Microwave Corporation and Florida High Tech Corridor

Development of a link between modeling of flicker noise and prediction of phase noise through design and measurement of amplifiers and frequency multipliers.


Nonlinear Modeling for Improved Power Amplifier Design
Principal Investigator: J. Wang
Granting Agency: Modelithics, Inc. and Florida High Tech Corridor

Research and training grant for development of active electrothermal modeling and characterization techniques for nonlinear transistors, as well as modeling and characterization techniques for passive components.


Solar-Cell-Microarray-Powered Ultra-High-Q Ultra-High-Frequency (UHF) Nanoprecision Resonator with SWNT as a Platform for Multi-Agent Sensing
Principal Investigator: J. Wang

Development of a solar-powered microarray of ultra-high-sensitive resonant mass sensors with distinctive binding sites for targeted species as a portable platform for identification of biological/chemical molecular assays.