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Research & Innovations

Recent breakthroughs in wireless power transfer (WPT) systems have achieved high RF-to-DC conversion efficiencies up to 94%, using advanced rectifier designs and CMOS modeling. Innovations in UWB phased arrays, Vivaldi antennas, and reflectarrays enable dynamic beam steering and efficient energy delivery, with some systems reaching over 87% beam collection. High-performance GaN and CMOS power amplifiers further enhance far-field power beaming for mobile and aerial applications. Explore our research findings here.

antenna array sending electromagnetic waves to drones.jpg

Deliver sustainable and efficient energy solutions to power unmanned systems, ensuring rel

Publications

Differential Rectifier with Impedance Splitting for >70% RF-DC Efficiency

A Differential Rectifier Design Based on Impedance Splitting and Compression Technique for Achieving > 70% ηRF-DC Over 13 DBM Input Dynamic Power Range

WPB System with >87.4% Beam Collection Efficiency

Modeling and Development of a Wireless Power Beaming (WPB) System Achieving> 87.4% Beam Collection Efficiency

Y-Shaped Reflectarray WPB System with 8.33% Efficiency

A wireless power beaming system using Y shaped reflectarray and rectenna achieving 8.33% power transfer efficiency

IR-UWB WPB System Using Antipodal Vivaldi Array

Impulse Radio Ultrawideband (IR-UWB) Signal Based Far-field Wireless Power Beaming (WPB) System Using Antipodal Vivaldi Antenna Array

Review of Distributed Coherent Phased Arrays for WPB

Far-Field Wireless Power Beaming to Mobile Receivers Using Distributed, Coherent Phased Arrays: A Review of the Critical Components of a Distributed Wireless Power Beaming System

78% PAE Class-E GaN HEMT PA for Far-Field WPB

A 78% High Power Added Efficiency Ultra-Wideband Class-E GaN HEMT Power Amplifier for Far-Field Wireless Power Beaming Applications

4×4 UWB Phased Array with >51° Scanning for WPT

4× 4 UWB phased array antenna with> 51 far-field scanning range for wireless power transfer application

CMOS Schottky Diode Modeling for Wide-Range RF-DC Efficiency

CMOS Schottky Diode Impedance Modeling for Varying Input Power to achieve a High ηRF−DC Rectifier Design over a Wide Input Power Range

Vivaldi WPB System with Receiver Architecture Optimization

Vivaldi Antenna Array Based Far-field Wireless Power Beaming (WPB) System and Receiver Architecture Optimization for Constant η-Overall

17 dB Gain, 65% PAE CMOS PA in 180 nm for WPT

A 17 dB High Gain 65% PAE Wideband CMOS Integrated Power Amplifier Design in 180 nm Process for Wireless Power Transfer Applications

360° Phase Shifter in 180 nm CMOS for Phased Arrays

Design of a 9.75 - 10.25 GHz Phase Shifter in 180 nm CMOS Process with 360◦ Phase Tunability for Phased Array System

Slot-Connected Cavity Design for 3D Vivaldi Antenna

A slot-connected cavity design with corresponding equivalent circuit model analysis for fully metallic 3-d vivaldi antenna for wireless power telemetry applications

3.1 W High Gain GaN HEMT PA with 51% Bandwidth

A 3.1 W High Gain 51% Fractional Bandwidth GaN HEMT Power Amplifier Design for Far-Field Wireless Power Transfer (WPT) Applications

High-Efficiency Schottky Rectifier in 180 nm CMOS

Schottky Diode Based High ηRF−DC Rectifier Design in 180nm CMOS Process for Far-Field Wireless Power Transfer Applications

High-Gain Quasi-Cassegrain Antenna for UWB

An optimal design of high-gain quasi-cassegrain antenna for ultra-wideband applications

Comparative Analysis of UWB Phased Arrays with Combining Network

A Comparative Analysis of UWB Phased Arrays with Combining Network for Wireless Power Transfer Applications

Path Loss Study for Pulse-Based UWB WPT System

Path loss characterization for a pulse-based wireless power transfer system using ultrawideband (uwb) phased array antenna

Design of 4×4 UWB Phased Array for WPT

Design of a 4x4 Ultrawideband Phased Array Antenna for Wireless Power Transfer Application

94% RF–DC Rectifier for WPT Applications

A 94% High ηRF–DC Rectifier Design for Wireless Power Transfer Applications

Four-Channel IR-UWB Transmitter for 2×2 Phased Array in CMOS

A Four Channel Impulse Radio Ultrawideband (IR-UWB) Front End Transmitter System for a 2 X 2 Quadrature Based Phased Array Antenna Designed in 180 nm CMOS Process

UWB Phased Array for MAV WPT via Beam Steering

Design and Simulation of UWB Phased Array Antenna For Wireless Power Transfer to Micro Aerial Vehicle (MAV) Through Beam Steering

UT Dallas News: “Researcher Charges Ahead with New Tech To Power Drones Wirelessly” (May 17, 2024)

This article covers Dr. Mahbub’s DARPA Director’s Fellowship, describing how her team is innovating far-field power beaming to recharge UAVs mid-flight using phased-array antennas and real-time telemetry. It details how this technology could eventually extend to EVs, mobile phones, wearable tech, and medical implants.

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