David Ricketts Zhong, H., & Ricketts, D. S. (2023). 14dB Active Gain Magnetic Negative Permeability Metamaterial Cell with Self-coupling Compensation. 2023 53RD EUROPEAN MICROWAVE CONFERENCE, EUMC, pp. 424–427. https://doi.org/10.23919/EuMC58039.2023.10290148 Harris, W. C., & Ricketts, D. S. (2023). Maximum gain enhancement in wireless power transfer using anisotropic metamaterials. SCIENTIFIC REPORTS, 13(1). https://doi.org/10.1038/s41598-023-32415-9 Ricketts, D. S. (2020). A Modern 16-QAM Digital Radio You Can Design and Build at Home [Application Notes]. IEEE MICROWAVE MAGAZINE, 21(7), 10–22. https://doi.org/10.1109/MMM.2020.2985192 Shen, J., & Ricketts, D. S. (2020). Compact W-Band "Swan Neck" Turnstile Junction Orthomode Transducer Implemented by 3-D Printing. IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 68(8), 3408–3417. https://doi.org/10.1109/TMTT.2020.2992065 Dwye, M., & Ricketts, D. S. (2020). The North Carolina State University Rabbit Radar: Build a Frequency-Modulated Continuous-Wave Radar in a Day [Application Notes]. IEEE MICROWAVE MAGAZINE, 21(5), 136–145. https://doi.org/10.1109/MMM.2020.2971184 Shen, J., & Ricketts, D. S. (2019). Additive Manufacturing of Complex Millimeter-Wave Waveguides Structures Using Digital Light Processing. IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 67(3), 883–895. https://doi.org/10.1109/TMTT.2018.2889452 Ricketts, D. S., Shi, E., Li, X., Sun, N., Yildirim, O. O., & Ham, D. (2019). Electrical Solitons for Microwave Systems. IEEE MICROWAVE MAGAZINE, 20(4), 123–134. https://doi.org/10.1109/MMM.2019.2891382 Harris, W. C., Stancil, D. D., & Ricketts, D. S. (2019). Improved wireless power transfer efficiency with non-perfect lenses. APPLIED PHYSICS LETTERS, 114(14). https://doi.org/10.1063/1.5081629 Lal, D., Ali, A. M. A., & Ricketts, D. S. (2018). Analysis and Comparison of High-Resolution GS/s Samplers in Advanced BiCMOS and CMOS. IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS, 65(5), 532–536. https://doi.org/10.1109/tcsii.2018.2822785 Tai, W., Abbasi, M., & Ricketts, D. S. (2018). Analysis and design of high-power and efficient, millimeter-wave power amplifier systems using zero degree combiners. INTERNATIONAL JOURNAL OF ELECTRONICS, 105(1), 1–11. https://doi.org/10.1080/00207217.2017.1335798 Ricketts, D. S. (2017). Analog limitations for high-speed digital radios: Where the bits stop working. 2017 ieee 60th international midwest symposium on circuits and systems (mwscas), 37–40. https://doi.org/10.1109/mwscas.2017.8052854 Shen, J. Y., Aiken, M. W., Abbasi, M., Parekh, D. P., Zhao, X., Dickey, M., & Ricketts, D. S. (2017). Rapid prototyping of low loss 3D printed waveguides for millimeter-wave applications. 2017 ieee mtt-s international microwave symposium (ims), 41–44. https://doi.org/10.1109/mwsym.2017.8058593 Chabalko, M., Besnoff, J., Laifenfeld, M., & Ricketts, D. S. (2017). Resonantly Coupled Wireless Power Transfer for Non-Stationary Loads With Application in Automotive Environments. IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, 64(1), 91–103. https://doi.org/10.1109/tie.2016.2609379 Besnoff, J., Chabalko, M., & Ricketts, D. S. (2016). A Frequency-Selective Zero-Permeability Metamaterial Shield for Reduction of Near-Field Electromagnetic Energy. IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS, 15, 654–657. https://doi.org/10.1109/lawp.2015.2466172 Harris, W., Nicholst, T., Abbasi, M., & Ricketts, D. (2016). A Versatile mm-wave micromachined anti-reflective layer. 2016 asia-pacific microwave conference (apmc2016). https://doi.org/10.1109/apmc.2016.7931298 Abbasi, M., & Ricketts, D. S. (2016). A high-power, broadband 245-285 GHz balanced frequency doubler in 45 nm SOI CMOS. MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, 58(2), 423–426. https://doi.org/10.1002/mop.29586 Shen, J. Y., Aiken, M., Ladd, C., Dickey, M., & Ricketts, D. S. (2016). A simple electroless plating solution for 3D printed microwave components. 2016 asia-pacific microwave conference (apmc2016). https://doi.org/10.1109/apmc.2016.7931434 Besnoff, J., Abbasi, M., & Ricketts, D. S. (2016). 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. Chabalko, M. J., Besnoff, J., & Ricketts, D. S. (2016). Magnetic Field Enhancement in Wireless Power With Metamaterials and Magnetic Resonant Couplers. IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS, 15, 452–455. https://doi.org/10.1109/lawp.2015.2452216 Karagozler, M. E., Goldstein, S. C., & Ricketts, D. S. (2016). Scalable self-assembly process for the fabrication of sub-millimetre three-dimensional cylindrical tubes. MICRO & NANO LETTERS, 11(1), 4–8. https://doi.org/10.1049/mnl.2015.0107 Abbasi, M., & Ricketts, D. S. (2016). W-band corrugated and non-corrugated conical horn antennas using stereolithography 3D-printing technology. 2016 asia-pacific microwave conference (apmc2016). https://doi.org/10.1109/apmc.2016.7931300 Abbasi, M., & Ricketts, D. S. (2016). mm-wave and THz multipliers: Advances and opportunities. 2016 asia-pacific microwave conference (apmc2016). https://doi.org/10.1109/apmc.2016.7931425 Abbasi, M., & Ricketts, D. S. (2015). 275-285 GHz balanced frequency quadrupler chain in 45 nm SOI CMOS. ELECTRONICS LETTERS, 51(18). https://doi.org/10.1049/el.2015.2100 Tai, W., & Ricketts, D. S. (2015). 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. Ricketts, D. S., Chabalko, M. J., & Hillenius, A. (2015). 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. https://doi.org/10.1063/1.4926660 Chabalko, M. J., & Ricketts, D. S. (2015). Experimental characterization of Fabry-Perot resonances of magnetostatic volume waves in near-field metamaterials. APPLIED PHYSICS LETTERS, 106(6). https://doi.org/10.1063/1.4907046 Ricketts, D. S., Chabalko, M. J., & Hillenius, A. (2015). Experimental demonstration of the equivalence of inductive and strongly coupled magnetic resonance wireless power transfer (vol 102, 053904, 2013). Applied Physics Letters, Vol. 107. Besnoff, J., & Ricketts, D. S. (2015). Near field wireless power transfer and quadrature amplitude modulated (QAM) communication link. 2015 IEEE Wireless Power Transfer Conference (WPTC). https://doi.org/10.1109/wpt.2015.7139131 Besnoff, J., & Ricketts, D. (2015). Quadrature amplitude modulated (QAM) communication link for near and mid-range RFID systems. 2015 IEEE International Conference on RFID (RFID), 151–157. https://doi.org/10.1109/rfid.2015.7113086 Besnoff, J., & Ricketts, D. S. (2015). Wide bandwidth for high-speed communication in mid-range, resonant WPT and RFID systems. 2015 European Microwave Conference (EuMC), 147–150. https://doi.org/10.1109/eumc.2015.7345721 Tai, W., & Ricketts, D. S. (2014). A COMPACT, 36 TO 72 GHz 15.8 dBm POWER AMPLIFIER WITH 66.7% FRACTIONAL BANDWIDTH IN 45 nm SOI CMOS. MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, 56(1), 166–169. https://doi.org/10.1002/mop.28062 Tai, W., & Ricketts, D. S. (2014). A W-band 21.1 dBm power amplifier with an 8-way zero-degree combiner in 45 nm SOI CMOS. 2014 ieee mtt-s international microwave symposium (ims). https://doi.org/10.1109/mwsym.2014.6848585 Chen, M. W., Carley, L. R., & Ricketts, D. S. (2014). A process-technology-scaling-tolerant pipelined ADC architecture achieving 6-bit and 4 GS/s ADC in 45nm CMOS. 2014 IEEE 14th Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems (SIRF), 16–18. https://doi.org/10.1109/sirf.2014.6828533 Williams, D. F., Corson, P., Sharma, J., Krishnaswamy, H., Tai, W., George, Z., … Voinigescu, S. P. (2014). Calibrations for Millimeter-Wave Silicon Transistor Characterization. IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 62(3), 658–668. https://doi.org/10.1109/tmtt.2014.2300839 Trotter, M. S., Griffin, J. D., & Ricketts, D. S. (2014). Enhanced accuracy for a complex image theory position estimator using frequency diversity. 2014 ieee topical conference on wireless sensors and sensor networks (wisnet), 52–54. https://doi.org/10.1109/wisnet.2014.6825505 Ozcan, O., Hu, W., Sitti, M., Bain, J., & Ricketts, D. S. (2014). Investigation of tip current and normal force measured simultaneously during local oxidation of titanium using dual-mode scanning probe microscopy. MICRO & NANO LETTERS, 9(5), 332–336. https://doi.org/10.1049/mnl.2014.0089 Chabalko, M. J., & Ricketts, D. S. (2014). Low-frequency metamaterial permeability retrieval for near-field applications. 2014 ieee antennas and propagation society international symposium (apsursi), 233–234. https://doi.org/10.1109/aps.2014.6904448 Chabalko, M., Alarcon, E., Bou, E., & Ricketts, D. S. (2014). Optimization of WPT efficiency using a conjugate load in non-impedance matched systems. 2014 ieee antennas and propagation society international symposium (apsursi), 645–646. https://doi.org/10.1109/aps.2014.6904653 Chabalko, M. J., & Ricketts, D. S. (2014). The effects of magneto-static resonances in metamaterials on the quality factor of coils in near field applications. 2014 ieee antennas and propagation society international symposium (apsursi), 426–427. https://doi.org/10.1109/aps.2014.6904545 Arumugam, D. D., Griffin, J. D., Stancil, D. D., & Ricketts, D. S. (2014). Three-Dimensional Position and Orientation Measurements Using Magneto-Quasistatic Fields and Complex Image Theory. IEEE ANTENNAS AND PROPAGATION MAGAZINE, 56(1), 160–173. https://doi.org/10.1109/map.2014.6821771 Ricketts, D. S., Chabalko, M., & Hillenius, A. (2014). Tri-Loop Impedance and Frequency Matching With High-Q Resonators in Wireless Power Transfer. IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS, 13, 341–344. https://doi.org/10.1109/lawp.2014.2299896 Tai, W., & Ricketts, D. S. (2013). 74 GHz, 17.2 dBm power amplifier in 45 nm SOI CMOS. ELECTRONICS LETTERS, 49(12), 758-+. https://doi.org/10.1049/el.2013.1052 Hu, W., Bain, J., & Ricketts, D. (2013). An AFM/STM multi-mode nanofabrication approach allowing in situ surface modification and characterisation. MICRO & NANO LETTERS, 8(1), 43–46. https://doi.org/10.1049/mnl.2012.0859 Xu, J., & Ricketts, D. S. (2013). An Efficient, Watt-Level Microwave Rectifier Using an Impedance Compression Network (ICN) With Applications in Outphasing Energy Recovery Systems. IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, 23(10), 542–544. https://doi.org/10.1109/lmwc.2013.2278276 Ricketts, D. S., Chabalko, M. J., & Hillenius, A. (2013). 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. https://doi.org/10.1063/1.4796125 Ricketts, D. S., Chabalko, M. J., & Hillenius, A. (2013). Experimental demonstration of the equivalence of inductive and strongly coupled magnetic resonance wireless power transfer. APPLIED PHYSICS LETTERS, 102(5). https://doi.org/10.1063/1.4788748 Li, C., & Ricketts, D. S. (2013). Loss minimisation in lambda/4 impedance transformers using multiple lambda/4 segments. ELECTRONICS LETTERS, 49(4), 274–276. https://doi.org/10.1049/el.2012.3382 Arumugam, D. D., Griffin, J. D., Stancil, D. D., & Ricketts, D. S. (2013). Magneto-quasistatic tracking of an American football: A goal-line measurement. IEEE Antennas and Propagation Magazine, 55(1), 137–146. Tamaru, S., & Ricketts, D. S. (2013). Measurement of ultra-low power oscillators using adaptive drift cancellation with applications to nano-magnetic spin torque oscillators. REVIEW OF SCIENTIFIC INSTRUMENTS, 84(5). https://doi.org/10.1063/1.4804650 Ricketts, D. S., & Chabalko, M. J. (2013). On the efficient wireless power transfer in resonant multi-receiver systems. 2013 ieee international symposium on circuits and systems (iscas), 2779–2782. https://doi.org/10.1109/iscas.2013.6572455 Ricketts, D. S., Chabalko, M. J., & Hillenius, A. (2013). Optimization of wireless power transfer for mobile receivers using automatic digital capacitance tuning. 2013 european microwave conference (eumc), 515–518. Arumugam, D. D., & Ricketts, D. S. (2013). Passive orientation measurement using magnetoquasistatic fields and coupled magnetic resonances. Electronics Letters, 49(16), 999–1001. https://doi.org/10.1049/EL.2013.0766 Birt, D. R., An, K., Tsoi, M., Tamaru, S., Ricketts, D., Wong, K. L., … Li, X. (2012). Deviation from exponential decay for spin waves excited with a coplanar waveguide antenna. Applied Physics Letters, 101(25), 252409. https://doi.org/10.1063/1.4772798 Hu, W., Bain, J. A., & Ricketts, D. S. (2012). In situ quantification of electrical isolation in STM-fabricated TiOx nanostructures. Micro & Nano Letters, 7(4), 334. https://doi.org/10.1049/mnl.2011.0678 Evarts, E. R., Cao, L., Ricketts, D. S., Rizzo, N. D., Bain, J. A., & Majetich, S. A. (2009). Spin transfer torque switching of magnetic tunnel junctions using a conductive atomic force microscope. Applied Physics Letters, 95(13), 132510. https://doi.org/10.1063/1.3240884