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Hao Xin is a professor of electrical and computer engineering and physics at the University of Arizona. He is also a fellow of IEEE.
His current teaching and research interests are high frequency technologies in ranges from microwave to terahertz, including passive and active circuits, antennas, properties and applications of new materials such as metamaterials and nanomaterials for wireless communication, sensing, biomedical applications, and energy harvesting.
Before joining the University of Arizona, Xin worked as a research scientist at Rockwell Scientific Co. and as the senior principal multidisciplinary engineer at Raytheon Missile Systems. He has published over 300 refereed papers and holds over 20 patents in related research areas. He served as the general co-chair of the 8th International Antenna Technology Workshop and the general secretary of the 39th International Infrared, Millimeter Wave and THz Conference. He was an associate editor for IEEE Antennas and Wireless Propagation Letters from 2012 to 2018.
Xin is an associate editor for IEEE Antennas and Wireless Propagation Magazine and the IEEE Journal of Radio Frequency Identification. He currently serves as the chair of the Young Professionals Committee of the IEEE Antennas and Propagation Society. He is also the Tucson joint chapter chair of the IEEE Microwave Theory and Techniques Society and IEEE Antennas and Propagation Society.
He has current and previous research support from the Air Force Office of Scientific Research, the Air Force Research Laboratory, the Army Research Office, the Defense Advanced Research Projects Agency, the National Science Foundation, the Office of Naval Research and industry – totaling more than $14 million overall and more than $8 million in individual expense – for his research on a broad range of topics related to microwave engineering.
Xin has graduated and mentored 11 postdoctoral researchers, 16 PhD students (including six visiting students), 10 MS students and more than 60 undergraduate students. Currently he supervises three postdocs, five PhD students, two MS students and two undergraduate students.Show Less
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Courses
- IEIntroductory Electromagnetics
- MEIIACDMicrowave Engineering II: Active Circuit Design
- MEIPCDMicrowave Engineering I: Passive Circuit Design
Grants
- Dynamic Spectrum Sharing 5G Applications Prototype Contract
Co-Investigator (COI)
2021
$1.0M
Active - IUCRC Phase I UArizona: Center to Stream Healthcare In Place (C2SHIP)
Co-Investigator (COI)
2021
$899.7K
Active - UofA Algorithms plus Antenna
Co-Investigator (COI)
2020
$334.4K
- UofA Algorithms plus Antenna
Principal Investigator (PI)
2020
$75.0K
- Planning IUCRC University of Arizona: Center of Stream Healthcare In Place (SHIP)
Co-Investigator (COI)
2018
$15.0K
- Collaborative Research: Metasurface Cloaks for Broadband Wireless Application with 3D Printed Technology
Principal Investigator (PI)
2018
$7.5K
- Elliptical Metasurface Cloaks in Printed Technology - Reduction of Mutual Coupling in Planar Antennas
Principal Investigator (PI)
2017
$7.5K
- Integrated Platform for Spectroscopic Thermoacoustic Imaging and Focused Microwave Therapy of the Breast
Principal Investigator (PI)
2016
$703.2K
- Direct Laser Writing Equipment for Fabrication of Novel Electromagnetic, Acoustic and Mechanical Meta-Structures
Principal Investigator (PI)
2016
$469.3K
- Support on 3D Printable Lenses
Principal Investigator (PI)
2016
$20.0K
News
- With $3M Grant, UArizona-Led Center to Advance At-Home Health Care Technology
2021
- Fiscal Year Closes With Continued Momentum for Tech Launch Arizona
2017
- Startup Licenses UA-Invented Radar System for Auto Industry
2017
- UA Engineers Twist Physics Laws to Boost Sonic Science
2016
- Engineering Discovery Brings Invisibility Closer to Reality
2015
- Printing the Future of Engineering
2015
- Grant to Fund Development of New Imaging Equipment
2011
Publications (164)
Recent
- Detection properties of photoconductive antennas fabricated on low-temperature-grown GaAs and ErAs: GaAs at subterahertz band
2020
- Real-time Volumetric Thermoacoustic Imaging and Thermometry using a 1.5D Ultrasound Array
2020
- Machine Learning Techniques for Optimizing Design of Double T-Shaped Monopole Antenna
2020
- A novel compact reconfigurable broadband antenna for cognitive radio applications
2020
- “A Novel Compact Reconfigurable Broadband Antenna for Cognitive Radio Applications
2020
- Optimizing Beam Quality for Focused Microwave Therapy (FMT) using a 32-Channel Phased Array
2020
- Real-time 3D thermoacoustic imaging and thermometry using a selfcalibration technique
2020
- Machine Learning Techniques’ Based Antenna Design Modeling and Optimization
2020
- Real-Time Thermoacoustic Imaging and Thermometry during Focused Microwave Heating in Multilayer Breast Phantom
2019
- Enhanced terahertz radiation of photoconductive antenna fabricated on GaAs-on-sapphire
2019
- Thermoacoustic Image-Guided Focused Microwave Therapy for Enhanced Breast Cancer Treatment
2019
- 3D Printed Micro Lenses for Depth of Focus Imaging
2019
- A W-band slotted waveguide array antenna based on 3D printing technology
2018
- 3-D printed parts for a multilayer phased array antenna system
2018
- Wideband elliptical metasurface cloaks in printed antenna technology
2018
- Towards study on thermoacoustic imaging guided focused microwave therapy for breast cancer treatment
2018
- A 300 THz tabletop radar range system with sub-micron distance accuracy
2018
- Guest editorial special cluster on three-dimensional printed antennas and electromagnetic structures
2018
- Rotman lens design and optimization for 5G applications
2018
- Reconfigurable reflectarray antenna for microwave detection and imaging
2017
- Additive Manufactured Millimeter Wave Luneburg Lens Antenna for Automotive Radar Application
2017
- Investigation of Novel Microwave Components Enabled by Additive Manufacturing
2017
- Passive and active matching of electrically-small helical antenna for HF-band communications
2017
- A novel compact reconfigurable UWB antenna for cognitive radio applications
2017
- Sparse linear regression for optimizing design parameters of double T-shaped monopole antennas
2017
- Non-foster circuit for wideband matching of high frequency helical antenna
2017
- Suspended individual SWCNT characterization via bottom gate FET configuration
2017
- 3-D-printed microwave and THz devices using polymer jetting techniques
2017
- The Role of Commercial Simulators and Multidisciplinary Training in Graduate-Level Electromagnetics Education [Education Corner]
2017
- 3D printed electronics with high performance, multi-layered electrical interconnect
2017
- Recent Applications of 3D Printing from Microwave to THz
2016
- Reconfigurable array based compressive sensing millimeter wave system
2016
- Design of volumetric sub-THz negative refractive index metamaterial with gain
2016
- Photoconductive Antenna Array Based THz Near Field Imaging System Incorporating Hadamard Multiplexing Method
2016
- Three-D Printable Material Development and Characterization for Electromagnetic Applications
2016
- 3-D Printing Implementation of an X-band Eaton Lens for Beam Deflection
2016
- 3D Printed Microwave and THz Devices using Polymer-Jetting Techniques
2016
- A W-band Waveguide Band-stop Filter using Electromagnetic Crystal (EMXT) Surface
2016
- A microwave direction of arrival estimation technique using a single antenna
2016
- Multi-layer archimedean spiral antenna fabricated using polymer extrusion 3D printing
2016
- A compact planar power combiner with complex impedance matching
2016
- Thermoacoustic and photoacoustic characterizations of few-layer graphene by pulsed excitations
2016
- Design of Double-Layer Transmitarray Antenna using 3D Printing Technology
2016
- Inkjet printed antennas
2016
- Fundamental Bandwidth Limit Study of Electrically Small Antennas
2016
- Microwave-induced Thermoacoustic Communications
2016
- The Role of Commercial Simulators and Multidisciplinary Training in Graduate-Level Electromagnetics Education
2016
- Wideband Subarray Design for 5G Antenna Arrays
2016
- Nonlinear Microwave Characterization of CVD Grown Graphene
2016
- Remote Thermoacoustic Imaging of Inert Explosives Embedded in Biological Tissue Samples
2016
- Reconfigurable Reflectarray Antenna Design for Millimeter Wave Imaging
2016
- Investigation of Several Novel Radio-Frequency Techniques-Biologically Inspired Direction Finding, 3D Printed RF Components and Systems, and Fundamental Aspects of Antenna Matching
2016
- DIRECTION OF ARRIVAL (DOA) ESTIMATION SYSTEM USING 3D PRINTED LUNEBURG LENS
2016
- Novel Electromagnetic Structures Enabled by 3D Printing Technology
2016
- Time-Domain THz Near-Field Imaging Incorporating Hadamard Multiplexing Method
2016
- Direction of arrival estimation system using 3D printed Luneburg lens
2016
- Application of Non-Contact Thermoacoustic Imaging for Embedded Explosive Detection
2016
- A Novel Reconfigurable Broadband Antenna for Cognitive Radio Systems
2016
- Guest Editorial: Special Cluster on Graphene and Two-Dimensional Materials for Antenna Applications
2016
- Microfluidic devices for terahertz spectroscopy of live cells toward lab-on-a-chip applications
2016
- Far Field and Near Field Performance Characterization of a THz Imaging System
2016
- 3D Printed Microwave and THz Components
2015
- Principal Component Analysis (PCA) based compressive sensing millimeter wave imaging system
2015
- Mechanical, Electromagnetic, and X-ray Shielding Characterization of a 3D Printable Tungsten-Polycarbonate Polymer Matrix Composite for Space-Based Applications
2015
- Broadband Spectroscopic Thermoacoustic Characterization of Single-Walled Carbon Nanotubes
2015
- Modeling of Non-contact Thermoacoustic Imaging
2015
- Computational Feasibility Study of Contrast-Enhanced Thermoacoustic Imaging for Breast Cancer Detection Using Realistic Numerical Breast Phantoms
2015
- A DUAL-BAND AMPLIFIER WITH FLEXIBLE FREQUENCY RATIOS
2015
- 3D Printed Multilayer Microstrip Line Structure with Vertical Transition toward Integrated Systems
2015
- Thermoacoustic Applications in Breast Cancer Imaging, Non-contact Explosive Detection and Communications
2015
- 3D Printable Multilayer Phased Array Design
2015
- Design of additive manufactured Luneburg Lens working at W-band
2015
- Active Metamaterials with Gain Compensation
2015
- Quality Improvement of Thermoacoustic Imaging Based on Compressive Sensing
2015
- THz Photoconductive Antenna Array Based Near Field Imaging
2015
- Design of Wideband Unit-Cell Element for 5G Antenna Arrays
2015
- Fabrication of a Realistic Breast Phantom Based on 3D Printing Technology for Thermoacoustic Imaging Application in Breast Cancer Detection
2015
- Linear and Nonlinear Microwave Characterization of CVD-Grown Graphene Using CPW Structure
2015
- Stability analysis and parasitic effects of negative impedance converter circuits
2015
- Terahertz Emission From Photoconductive Antenna Fabricated on GaAs/Sapphire Substrate
2015
- 3D printed antennas for wireless communication
2015
- Anisotropic Microwave Conductivity Dispersion of Horizontally Aligned Multi-Walled Carbon-Nanotube Thin Film on Flexible Substrate
2015
- A Review of Active Metamaterials Incorporating Gain Device / Medium
2015
- Antenna Radiation Pattern Control through 3D Printed Inhomogeneous Dielectrics
2015
- Broadband Microwave Characterization of Nanostructured Thin Film With Giant Dielectric Response
2015
- 3-D Printed Microwave Patch Antenna via Fused Deposition Method and Ultrasonic Wire Mesh Embedding Technique
2015
- Compressive Sensing Based Contrast-Enhanced Thermoacoustic Imaging for Breast Cancer Detection
2015
- Reconfigurable Array Design to Realize Principal Component Analysis (PCA)-Based Microwave Compressive Sensing Imaging System
2015
- Study of Power Efficiency of Non-Foster Impedance Matching for Electrically Small Antenna
2014
- Direction of Arrival Estimation Enhancement for Closely Spaced Electrically Small Antenna Array
2014
- Comparison of Photoconductive Antenna Performance on LT-GaAs and SI-GaAs Substrates
2014
- Fabrication of microwave patch antenna using additive manufacturing technique
2014
- “3D Rapid Prototyping of Terahertz Computer-Generated Volume Holograms”
2014
- Beam Scanning Array Based on Luneburg Lens
2014
- “Microwave Gain Medium with Negative Refractive Index”
2014
- Numerical analysis of terahertz generation characteristics of photoconductive antenna
2014
- Non-contact thermoacoustic imaging based on laser and microwave vibrometry
2014
- “Liquid Based Dielectric Resonator Antenna and Its Application for Measuring Liquid Real Permittivities”
2014
- A novel method for 3d printing high conductivity alloys for UHF applications
2014
- Experimental Validation of a Numerical Model for Thermoacoustic Imaging
2014
- Electromagnetic materials of artificially controlled properties for 3D printing applications
2014
- Comparison of Carbon Nanotubes and Air Bubbles as Contrast Agents for Thermoacoustic Imaging by Computational Studies
2014
- Experimental Validation of a Numerical Model for Thermoacoustic Imaging Applications
2014
- A Band-stop Filter Using Electromagnetic Crystal (EMXT) Surface
2014
- Microwave (1.7–2.6 GHz) Characterization of Hydroxylapatite and Oxalate Using Rectangular Waveguide
2014
- “Infrared (IR) Thermal Emission from a 2D Array of Plasmonic Spheres”
2014
- 3D Microwave Eaton Lens Fabricated by Polymer Jetting Rapid Prototyping
2014
- Reconfigurable array design to realize Principal Component Analysis (PCA) based microwave compressive sensing imaging system
2014
- “Active Metamaterial Incorporating Gain Device / Medium: A Review,”
2014
- “A 3-D Luneburg Lens Antenna Fabricated by Polymer Jetting Rapid Prototyping”
2014
- “Microwave to THz characterization of carbon based nano-materials”
2014
- Impact of Matching Networks on Direction Finding Performance Utilizing Two Closely Spaced Electrically Small Antennas
2014
- Direction of Arrival Estimation of Broadband Signal Using Single Antenna
2014
- Compressive Sensing Based Contrast Enhanced Thermoacoustic Imaging For 3-D Breast Cancer Detection
2014
- “Graphene conductivity characterization at microwave and THz frequency”
2014
- Characterization of Tungsten/Polycarbonate Polymer Matrix Composites for Mechanical, Electromagnetic, and Radiation Shielding Applications
2014
- Performance Improvement for Thermoacoustic Imaging Using Compressive Sensing
2014
- Radio-Frequency Direction Finding Inspired by Human Ears
2014
- “THz thermal emission control via electromagnetic band engineering”
2014
- Parameter optimization for a photoconductive antenna used as receiver in terahertz time-domain spectrometer
2014
- 3D Printed Dielectric Reflectarrays: Low-Cost High-Gain Antennas at Sub-Millimeter Waves”
2014
- Stability of Tunnel Diode based Negative Impedance Circuit
2014
- Microwave-Induced Thermoacoustic Imaging for Embedded Explosives Detection
2014
- “Design of an integrated lens for separating microwave and optical wave”
2013
- Computational Study of Contrast-Agent-Enhanced Thermoacoustic Imaging for Breast Cancer Detection Using Realistic Numerical Breast Phantoms
2013
- “Development of Terahertz Microfluidic Devices toward “Lab-on-a-Chip” Applications
2013
- IR Thermal Emission from an Array of Plasmonic Coated Spheres
2013
- Electromagnetic Crystal (EMXT) based Terahertz Horn Antenna”
2013
- “Terahertz Characterization of Carbon Nanotube and Graphene On-Substrate Thin Films”
2013
- Investigation of Nonlinear Modeling for Active Antenna Design
2013
- Impact of Microwave Pulses on Thermoacoustic Imaging Applications
2013
- Terahertz Metasurface for Potential Live Cell Sensing Application”
2013
- Broadband Electronically Beam Scanning Structure Using Luneburg Lens
2013
- High-Gain Dielectric Reflectarray Antennas for THz Applications
2013
- “Thermoacoustic Imaging and Spectroscopy for Breast Cancer Detection Applications”
2013
- “Using a portable terahertz spectrometer to measure the optical properties of in vivo human skin”
2013
- A Hybrid Microwave / Acoustic Communication Scheme - Thermoacoustic Communication
2013
- Characterization Of Anisotropic Conduction Of Horizontally Aligned Carbon Nanotube Thin Films
2013
- “Active Microwave Metamaterials”
2013
- Design, Fabrication, and Measurement of Dielectric Reflectarray Antennas at 100 GHz
2013
- Direction of Arrival Estimation Improvement for Closely Spaced Electrically Small Antenna Array
2013
- “GHz to THz Components and Microsystems Utilizing 3D Additive Manufacturing Technology”
2013
- Thermoacoustic Imaging and Spectroscopy for Enhanced Materials Differentiation
2012
- “Active Negative Refraction Index (NRI) Transmission Line with Gain”
2012
- Direction of Arrival Estimation Utilizing Incident Angle Dependent Spectra
2012
- “Investigation of Microwave Negative Refractive Index (NRI) Transmission Lines Incorporating Tunnel Diodes”
2012
- Direction of Arrival Estimation with Two Planar Inverted F Antennas and a Scatter
2012
- “A Wideband Circularly Polarized Patch Antenna for 60 GHz Wireless Communications”
2012
- Terahertz Horn Antenna Based on Hollow-Core Electromagnetic Crystal (EMXT) Structure
2012
- “Printed 3-D Electromagnetic Crystal (EMXT) Based THz Micro-Systems”
2012
- “Experimental Research on the Microwave Properties of Carbon Nanotube Array”
2012
- “Microwave-Induced Thermoacoustic Imaging Model for Potential Breast Cancer Detection”
2012
- Broadband Thermoacoustic Spectroscopy of Single Walled Carbon nanotubes
2012
- A Balanced Active Composite Right-/ Left-Handed (CRLH) Transmission Line with Gain
2012
- Direction of arrival estimation using Luneburg lens
2012
- “High Frequency Characterization of Carbon Nanotube and Graphene Materials”
2012
- Fabrication of Terahertz Gradient-index Components via 3D Rapid Prototyping
2012
- “Investigation of High Frequency Properties of Carbon Based Nano-Materials and Devices”
2012
- Terahertz Characterization of Graphene Thin Films on Both Sides of Substrate
2012
- “Spectroscopic Thermoacoustic Imaging of Water and Fat Composition”
2012
- “High Frequency (Microwave to THz) Study of Carbon Based Nano-Materials”
2012
- Balanced and Symmetric Design of Active Composite Right- / Left-Handed Transmission Line with Gain
2012
- 3D Rapid Prototyping of Terahertz Computer-Generated Volume Holograms
2012
- “Impact of Microwave Pulses on Thermoacoustic Imaging Applications”
2012