David Ricketts

A Two-Dimensional Active Magnetic Metamaterial Cell

Zhong, H., Su, S., & Ricketts, D. S. (2025, September 23).

Active Metamaterial Mini-Array Using Inter-Cell Stability Compensation

Su, S., Zhong, H., & Ricketts, D. S. (2025, September 23).

RF Integrated Gate Driver for Ultra-fast Switching of 10 kV SiC MOSFETs

Kolli, N., Rawat, S., Das, P. P., Kokkonda, R. K., Vignesh, K. R. C., Khan, S. A., … McCabe, B. (2025, October 19).

Radio Disruption of Electronic Systems

GOMACTech. Presented at the GOMACTech, Charleston SC.

Scalable Active Metamaterial Cell with Integrated Gain, Compensation and Power

Su, S., Zhong, H., & Ricketts, D. S. (2024, July 14). 2024 IEEE INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION AND INC/USNCURSI RADIO SCIENCE MEETING, AP-S/INC-USNC-URSI 2024, pp. 2025–2026.

Sweat-Powered, mm-Scale, Continuous-Time Sensor Systems With Bluetooth Low Energy (BLE) Backscatter

Besnoff, J., Zhong, H., Su, S., Kaveti, R., Maiya, N., Krishna, S., … Ricketts, D. S. (2024, January 1). IEEE Access, Vol. 12, pp. 190092–190101.

14dB Active Gain Magnetic Negative Permeability Metamaterial Cell with Self-coupling Compensation

Maximum gain enhancement in wireless power transfer using anisotropic metamaterials

Scientific Reports, 13(1).

Teaching 100 remote students hands-on microwave design: Building a 16 QAM radio at home by hand

A Modern 16-QAM Digital Radio You Can Design and Build at Home [Application Notes]

Ricketts, D. S. (2020, June 1). IEEE Microwave Magazine, Vol. 21, pp. 10–22.

Advances in 3D additive manufacturing for complex mm-wave components and sub-systems

IEEE Radio Wireless Week. Presented at the IEEE Radio Wireless Week.

Compact W-Band “Swan Neck” Turnstile Junction Orthomode Transducer Implemented by 3-D Printing

Shen, J., & Ricketts, D. S. (2020, May 15). IEEE Transactions on Microwave Theory and Techniques, Vol. 68, pp. 3408–3417.

Dynamic artificial surfaces for mm-wave imaging using photon induced plasmas in silicon lenses

DMI Online Workshop on Energy/Quantum/Metamaterials. Presented at the DMI Online Workshop on Energy/Quantum/Metamaterials.

Lessons from Build-a-Radio/Radar in a Day: The Ins and Outs of Experiential Design for Students

European Microwave Week, Teaching Microwave Engineering Special Session. Presented at the European Microwave Week, Teaching Microwave Engineering Special Session.

The North Carolina State University Rabbit Radar: Build a Frequency-Modulated Continuous-Wave Radar in a Day [Application Notes]

Dwyer, M., & Ricketts, D. S. (2020, March 31). IEEE Microwave Magazine, Vol. 21, pp. 136–145.

Additive Manufacturing of Complex Millimeter-Wave Waveguides Structures Using Digital Light Processing

Shen, J., & Ricketts, D. S. (2019, January 4). IEEE Transactions on Microwave Theory and Techniques, Vol. 67, pp. 883–895.

Electrical Solitons for Microwave Systems: Harmonizing Nonlinearity and Dispersion with Nonlinear Transmission Line

Ricketts, D. S., Shi, E., Li, X., Sun, N., Yildirim, O. O., & Ham, D. (2019, March 6). IEEE Microwave Magazine, Vol. 20, pp. 123–134.

Improved wireless power transfer efficiency with non-perfect lenses

Harris, W. C., Stancil, D. D., & Ricketts, D. S. (2019, April 8). Applied Physics Letters, Vol. 114.

Simple Laminated PCB Artificial Dielectrics for mm-Wave Quasioptical Lenses

3D Printed Antennas: Enabling Complex Antenna Structures

USNC-URSI. Presented at the USNC-URSI.

3D Printed Coaxial Transmission Line Using Low Loss Dielectric and Liquid Metal Conductor

A 50% Fractional Bandwidth, Wireless Power Communication System Achieving 6.78 Mbps at 13.56 MHz Carrier

Analysis and Comparison of High-Resolution GS/s Samplers in Advanced BiCMOS and CMOS

Lal, D., Ali, A. M. A., & Ricketts, D. S. (2018, April 3). IEEE Transactions on Circuits & Systems II Express Briefs, Vol. 65, pp. 532–536.

Dynamic Impedance Matching of Multiple Loads in Wireless Power Transfer using a Genetic Optimization Approach

Expanding the Antenna Frontier With Antenna Synthesis and 3D Printing

Ricketts, D. S., Shen, J., & Dunn, J. (2018, September). Microwave Engineering Europe.

Accurate De-Embedding and Measurement of Spin-Torque Oscillators

IEEE Transactions on Magnetics, 53(11), 1–4.

Analog limitations for high-speed digital radios: Where the bits stop working

Ricketts, D. S. (2017, August 1). 2017 Ieee 60th International Midwest Symposium on Circuits and Systems (Mwscas), pp. 37–40.

Analysis and design of high-power and efficient, millimeter-wave power amplifier systems using zero degree combiners

Tai, W., Abbasi, M., & Ricketts, D. S. (2017, May 29). International Journal of Electronics, Vol. 105, pp. 1–11.

Analytical limits to maximum RF performance of spin torque nano-oscillators

Magnetic Field-Based Positioning Systems

IEEE Communications Surveys & Tutorials, 19(3), 2003–2017.

Precision power measurement of spin-torque nano-oscillators using an accurate de-embedding structure and analysis

Rapid prototyping of low loss 3D printed waveguides for millimeter-wave applications

Shen, J., Aiken, M. W., Abbasi, M., Parekh, D. P., Zhao, X., Dickey, M. D., & Ricketts, D. S. (2017, June 1). 2017 Ieee Mtt-s International Microwave Symposium (Ims), pp. 41–44.

Smart wireless power: A wireless power and bi-directional LIN communication system

Ultrahigh-Data-Rate Communication and Efficient Wireless Power Transfer at 13.56 MHz

IEEE Antennas and Wireless Propagation Letters, 16, 2634–2637.

A broadband, compact 140–170GHz double side-band receiver in 90nm SiGe technology

Presented at the 2016 46th European Microwave Conference (EuMC).

A simple electroless plating solution for 3D printed microwave components

Shen, J., Aiken, M., Ladd, C., Dickey, M. D., & Ricketts, D. S. (2016, December 1). 2016 Asia-Pacific Microwave Conference (apmc2016).

A versatile mm-wave micromachined anti-reflective layer

Harris, W., Nichols, T., Abbasi, M., & Ricketts, D. (2016, December 1). 2016 Asia-Pacific Microwave Conference (apmc2016).

High data-rate communication in near-field RFID and wireless power using higher order modulation

IEEE Transactions on Microwave Theory and Techniques, 64(2), 401–413.

Resonantly Coupled Wireless Power Transfer for Non-Stationary Loads With Application in Automotive Environments

Chabalko, M., Besnoff, J., Laifenfeld, M., & Ricketts, D. S. (2016, September 14). IEEE Transactions on Industrial Electronics, Vol. 64, pp. 91–103.

W-Band corrugated and non-corrugated conical horn antennas using Stereolithography 3D-printing technology

Abbasi, M., & Ricketts, D. S. (2016, December 1). 2016 Asia-Pacific Microwave Conference (apmc2016).

mm-Wave and THz multipliers: Advances and opportunities

Abbasi, M., & Ricketts, D. S. (2016, December 1). 2016 Asia-Pacific Microwave Conference (apmc2016).

275–285 GHz balanced frequency quadrupler chain in 45 nm SOI CMOS

Abbasi, M., & Ricketts, D. S. (2015, August 18). Electronics Letters, Vol. 51.

A Frequency-Selective Zero-Permeability Metamaterial Shield for Reduction of Near-Field Electromagnetic Energy

Besnoff, J., Chabalko, M., & Ricketts, D. S. (2015, August 13). IEEE Antennas and Wireless Propagation Letters, Vol. 15, pp. 654–657.

A compact, high linearity 40GS/s track-and-hold amplifier in 90nm SiGe technology

A compact, high-gain Q-band stacked power amplifier in 45nm SOI CMOS with 19.2dBm P-sat and 19% PAE

Ieee topical conference on power amplifiers for wireless and radio, 34–36.

A high‐power, broadband 245–285 GHz balanced frequency doubler in 45 nm SOI CMOS

Abbasi, M., & Ricketts, D. S. (2015, December 24). Microwave and Optical Technology Letters, Vol. 58, pp. 423–426.

Erratum: “Experimental demonstration of the equivalence of inductive and strongly coupled magnetic resonance wireless power transfer” [Appl. Phys. Lett. 102, 053904 (2013)]

Applied Physics Letters, 107(4), 049901.

Experimental characterization of Fabry-Perot resonances of magnetostatic volume waves in near-field metamaterials

Chabalko, M. J., & Ricketts, D. S. (2015, February 9). Applied Physics Letters, Vol. 106.

Experimental demonstration of the equivalence of inductive and strongly coupled magnetic resonance wireless power transfer (vol 102, 053904, 2013)

Applied Physics Letters, Vol. 107.

Magnetic Field Enhancement in Wireless Power With Metamaterials and Magnetic Resonant Couplers

Chabalko, M. J., Besnoff, J., & Ricketts, D. S. (2015, July 7). IEEE Antennas and Wireless Propagation Letters, Vol. 15, pp. 452–455.

Near field wireless power transfer and quadrature amplitude modulated (QAM) communication link

Besnoff, J., & Ricketts, D. S. (2015, May 1). 2015 IEEE Wireless Power Transfer Conference (WPTC).

Quadrature amplitude modulated (QAM) communication link for near and mid-range RFID systems

Besnoff, J., & Ricketts, D. (2015, April 1). 2015 Ieee International Conference on Rfid (Rfid), pp. 151–157.

Scalable self‐assembly process for the fabrication of sub‐millimetre three‐dimensional cylindrical tubes

Karagozler, M. E., Goldstein, S. C., & Ricketts, D. S. (2015, December 21). Micro & Nano Letters, Vol. 11, pp. 4–8.

Wide bandwidth for high-speed communication in mid-range, resonant WPT and RFID systems

Besnoff, J., & Ricketts, D. S. (2015, September 1). 2015 45th European Microwave Conference (Eumc), pp. 147–150.

100 Gb/s All-electronic Radios: Opportunities and Challenges

GomacTech. Presented at the GomacTech.

A Q-band power amplifier with high-gain pre-driver and 18.7 dBm output power for fully integrated CMOS transmitters

A W-band 21.1 dBm power amplifier with an 8-way zero-degree combiner in 45 nm SOI CMOS

Tai, W., & Ricketts, D. S. (2014, June 1). 2014 Ieee Mtt-s International Microwave Symposium (Ims).

A process-technology-scaling-tolerant pipelined ADC architecture achieving 6-bit and 4 GS/s ADC in 45nm CMOS

Chen, M. W., Carley, L. R., & Ricketts, D. S. (2014, January 1). 2014 IEEE 14th Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems (SIRF), pp. 16–18.

Broadband W-band On-Chip Yagi Antenna Using Superstrate for High Efficiency and Endfire Radiation

Asia Pacific Microwave Conference. Presented at the Asia Pacific Microwave Conference.

Calibrations for Millimeter-Wave Silicon Transistor Characterization

Williams, D. F., Corson, P., Sharma, J., Krishnaswamy, H., Tai, W., George, Z., … Voinigescu, S. P. (2014, January 31). IEEE Transactions on Microwave Theory and Techniques, Vol. 62, pp. 658–668.

Enhanced accuracy for a complex image theory position estimator using frequency diversity

Trotter, M. S., Griffin, J. D., & Ricketts, D. S. (2014, January 1). 2014 Ieee Topical Conference on Wireless Sensors and Sensor Networks (Wisnet), pp. 52–54.

Experimental Characterization of Volume-mode Waves in Near-field Anisotropic Metamaterials with Application to Wireless Power Transfer

Asia-Pacific Microwave Conference. Presented at the Asia-Pacific Microwave Conference.

Investigation of tip current and normal force measured simultaneously during local oxidation of titanium using dual‐mode scanning probe microscopy

Ozcan, O., Hu, W., Sitti, M., Bain, J., & Ricketts, D. S. (2014, May 1). Micro & Nano Letters, Vol. 9, pp. 332–336.

Low-frequency metamaterial permeability retrieval for near-field applications

Chabalko, M. J., & Ricketts, D. S. (2014, July 1). 2014 Ieee Antennas and Propagation Society International Symposium (Apsursi), pp. 233–234.

Optimization of WPT efficiency using a conjugate load in non-impedance matched systems

Chabalko, M., Alarcon, E., Bou, E., & Ricketts, D. S. (2014, July 1). 2014 Ieee Antennas and Propagation Society International Symposium (Apsursi), pp. 645–646.

Resonantly-coupled wireless powered seat locomotion in automotive applications

The effects of magneto-static resonances in metamaterials on the quality factor of coils in near field applications

Chabalko, M. J., & Ricketts, D. S. (2014, July 1). 2014 Ieee Antennas and Propagation Society International Symposium (Apsursi), pp. 426–427.

Three-dimensional position and orientation measurements using magneto-quasistatic fields and complex image theory [measurements corner]

Arumugam, D. D., Griffin, J. D., Stancil, D. D., & Ricketts, D. S. (2014, February 1). IEEE Antennas and Propagation Magazine, Vol. 56, pp. 160–173.

Tri-Loop Impedance and Frequency Matching With High-<formula formulatype="inline"><tex Notation="TeX">$Q$</tex></formula> Resonators in Wireless Power Transfer

Ricketts, D. S., Chabalko, M., & Hillenius, A. (2014, January 1). IEEE Antennas and Wireless Propagation Letters, Vol. 13, pp. 341–344.

Watt-Level, All-Silicon mm-Wave Power Amplifiers Using Zero-Degree Combiners

GOMACTech (Government Microcircuit Applications and Critical Technology) Conference. Presented at the GOMACTech (Government Microcircuit Applications and Critical Technology) Conference.

74 GHz, 17.2 dBm power amplifier in 45 nm SOI CMOS

Tai, W., & Ricketts, D. S. (2013, June 1). Electronics Letters, Vol. 49, pp. 758-+.

A 0.7W fully integrated 42GHz power amplifier with 10% PAE in 0.13µm SiGe BiCMOS

2013 IEEE International Solid-State Circuits Conference Digest of Technical Papers. Presented at the 2013 IEEE International Solid-State Circuits Conference (ISSCC 2013).

A 4GHz-bandwidth op-amp-free track-and-hold and 6-bit flash ADC in 45nm SOI CMOS

A compact, 36 to 72 GHz 15.8 dBm power amplifier with 66.7% fractional bandwidth in 45 nm SOI CMOS

Tai, W., & Ricketts, D. S. (2013, November 25). Microwave and Optical Technology Letters, Vol. 56, pp. 166–169.

A transmission line based resistance compression network (TRCN) for microwave applications

2013 IEEE MTT-S International Microwave Symposium Digest (MTT), 1–3.

An AFM/STM multi‐mode nanofabrication approach allowing in situ surface modification and characterisation

Hu, W., Bain, J., & Ricketts, D. (2013, January 1). Micro & Nano Letters, Vol. 8, pp. 43–46.

An Efficient, Watt-Level Microwave Rectifier Using an Impedance Compression Network (ICN) With Applications in Outphasing Energy Recovery Systems

Xu, J., & Ricketts, D. S. (2013, August 29). IEEE Microwave and Wireless Components Letters, Vol. 23, pp. 542–544.

An active position sensing tag for sports visualization in American football

Calibration-Kit Design for Millimeter-Wave Silicon Integrated Circuits

IEEE Transactions on Microwave Theory and Techniques, 61(7), 2685–2694.

Distributed Resonant Coil Systems for Efficient Wireless Power Transfer

Progress in Electromagnetics Research Symposium (PIERS). Presented at the Progress in Electromagnetics Research Symposium (PIERS).

Erratum: “Experimental demonstration of the equivalence of inductive and strongly coupled magnetic resonance wireless power transfer” [Appl. Phys. Lett. 102, 053904 (2013)]

Applied Physics Letters, 102(14), 149902.

Experimental Investigation of Force, Conduction and Growth in Nano-oxidation using scanning probe microscopy

Enabling Nanomanufacturing for Rapid Innovation. Poster presented at the Enabling Nanomanufacturing for Rapid Innovation.

Experimental demonstration of complex image theory for vertical magnetic dipoles with applications to remote sensing and position tracking

Experimental demonstration of the equivalence of inductive and strongly coupled magnetic resonance wireless power transfer

Ricketts, D. S., Chabalko, M. J., & Hillenius, A. (2013, February 4). Applied Physics Letters, Vol. 102.

Loss minimisation in λ/4 impedance transformers using multiple λ/4 segments

Li, C., & Ricketts, D. S. (2013, February 1). Electronics Letters, Vol. 49, pp. 274–276.

Magneto-quasistatic tracking of an American football: A goal-line measurement

IEEE Antennas and Propagation Magazine, 55(1), 137–146.

Measurement of ultra-low power oscillators using adaptive drift cancellation with applications to nano-magnetic spin torque oscillators

Tamaru, S., & Ricketts, D. S. (2013, May 1). Review of Scientific Instruments, Vol. 84.

Microwave watt-level rectifiers for power recycling applications

Microwave Integrated Circuits Conference (EuMIC), 2013 European, 516–519.

On the efficient wireless power transfer in resonant multi-receiver systems

Ricketts, D. S., & Chabalko, M. J. (2013, May 1). 2013 Ieee International Symposium on Circuits and Systems (Iscas), pp. 2779–2782.

Optimization of wireless power transfer for mobile receivers using automatic digital capacitance tuning

2013 european microwave conference (eumc), 515–518.

Oscillatory Spatial Intensity Pattern for Spin Waves Excited with a Coplanar Waveguide Antenna

Conference on Magnetism and Magnetic Materials. Presented at the Conference on Magnetism and Magnetic Materials, Chicago, IL.

Passive Magnetoquasistatic Position Measurement Using Coupled Magnetic Resonances

IEEE Antennas and Wireless Propagation Letters, 12, 539–542.

Passive orientation measurement using magnetoquasistatic fields and coupled magnetic resonances

Electronics Letters, 49(16), 999–1001.

A 45 GHz Asymmetric Multilevel Outphasing Transmitter in 45nm SOI CMOS

IEEE International Solid-State Circuits Conference. Presented at the IEEE International Solid-State Circuits Conference.

A dispersion-tapered reflection soliton oscillator

2012 IEEE/MTT-S International Microwave Symposium Digest, 1–3.

A low-loss, compact, λ/4 power combiner architecture

Microwave Integrated Circuits Conference (EuMIC), 2012 7th European, 147,150.

Analysis and Modeling of Capacitive Power Transfer in Microsystems

IEEE Transactions on Circuits and Systems I: Regular Papers, 59(7), 1557–1566.

Deviation from exponential decay for spin waves excited with a coplanar waveguide antenna

Applied Physics Letters, 101(25), 252409.

Equivalence of inductive coupling and strongly coupled Magnetic resonance in wireless power transfer

Progress in Electromagnetics Research Symposium (PIERS). Presented at the Progress in Electromagnetics Research Symposium (PIERS).

Error Reduction in Magnetoquasistatic Positioning Using Orthogonal Emitter Measurements

IEEE Antennas and Wireless Propagation Letters, 11, 1462–1465.

Experimental Study of the Variation in Oscillation Characteristics of Point-Contact-Based Spin-Torque Oscillators

IEEE Magnetics Letters, 3, 3000504–3000504.

Experimental study on the effects of groups of people on magnetoquasistatic positioning accuracy

Frequency scaling of power reclamation networks in outphasing PA architectures

In situ quantification of electrical isolation in STM-fabricated TiOx nanostructures

Micro & Nano Letters, 7(4), 334.

In-situ characterization using AFM probes in multiple modes

International Conference Electron, Ion, Photon Beam Technology and Nanofabrication. Presented at the International Conference Electron, Ion, Photon Beam Technology and Nanofabrication.

Magnetic resonant wireless power delivery for distributed sensor and wireless systems

Wireless orientation sensing using magnetoquasistatic fields and complex image theory

A Q-band SiGe power amplifier with 17.5 dBm saturated output power and 26% peak PAE

2011 IEEE Bipolar/BiCMOS Circuits and Technology Meeting, 146–149.

Directed scanning probe nanomanufacturing of lateral Ti-TiO2-Ti junctions for low capacitance MIM rectenna diodes

Micro and Nano Engineering Conference. Presented at the Micro and Nano Engineering Conference, Berlin.

Electrostatic actuation and control of micro robots using a post-processed high-voltage SOI CMOS chip

2011 IEEE International Symposium of Circuits and Systems (ISCAS), 2509–2512.

Green’s function for magnetostatic surface waves and its application to the study of diffraction patterns

Physical Review B, 84(6).

High Current Pulse Generation for Thermal Surface Modification using Standard STM

International Conference Electron, Ion, Photon Beam Technology and Nanofabrication. Presented at the International Conference Electron, Ion, Photon Beam Technology and Nanofabrication.

Higher order loop corrections for short range magnetoquasistatic position tracking

Influence of the bias field orientation on the interaction strength between two closely formed spin torque oscillators

International Magnetics Conference. Presented at the International Magnetics Conference, Taiwan.

Localized thermal modification of surfaces via pulsed electron bombardment from an STM tip

International Conference Electron, Ion, Photon Beam Technology and Nanofabrication. Presented at the International Conference Electron, Ion, Photon Beam Technology and Nanofabrication.

Proximity and Orientation Sensing Using Magnetoquasistatic Fields and Complex Image Theory