**Research Topics with Selected Papers & Projects:**

**Nonlinear Dynamics & Chaos**

[PRE 2017][AIP Chaos 2020][AIP Chaos 2016][PLOS One 2021] [AIP JAP 2021]**Electronics, Integrated Circuits, Microelectronics, Circuits & Systems**

[IEEE Access 2023] [IEEE SSCS Chipathon 2022] [IET Electronics Letters 2022] [IEEE ICECS 2020][IEEE TCASII 2018][IET Electronics Letters 2014]**Sensors (Detection, Radar, Sonar, MEMs)**

[IET Electronics Letters 2022][IET Electronics Letters 2014][U.S. Patent 11,733,364][MDPI Sensors 2019][MDPI Remote Sensing 2021]**Pulse Induction Metal Detection**

[U.S. Patent 10,795,045][U.S. Patent 9,694,364][U.S. Patent 9,637,309]**Hardware Security**

[IEEE TVLSI 2020]

**Journal Publications:**

[J16] **Beal, A. N.** (2023). Extracting Communication, Ranging and Test Waveforms with Regularized Timing from the Chaotic Lorenz System. Signals, 4(3), 507-523.

[J15] Cohen, S.D., Fendley, C., **Beal, A. N.** & Corron, N.J. (2023), Long-Range Pulse Interactions in Unclocked
FPGAs. IEEE Access, vol. 11, pp. 41158-41166

[J14] Li, X., Shougat, M. R. E. U., Mollik, T., Dean, R. N., **Beal, A. N.** & Perkins, E. (2023) Field-programmable analog array (FPAA) based four-state adaptive oscillator for analog frequency analysis, Review of Scientific Instruments, 94(3).

[J13] Li, X., **Beal, A. N.**, Dean, R.N. and Perkins, E. (2023) Chaos in a pendulum adaptive frequency oscillator circuit experiment. Chaos Theory and Applications 5, no. 1 (2023): 11-19.

[J12] Syed, T.M., Pappu, C.S. and **Beal, A. N.** (2022), Drastically reduced sensor hardware for solvable chaosbased sonar. Electronics Letters, doi: 10.1049/ell2.12616

[J11] Pappu, C. S., **Beal, A. N.**, & Flores, B. C. (2021). Chaos Based Frequency Modulation for Joint Monostatic and Bistatic Radar-Communication Systems. Remote Sensing, 13(20), 4113.

[J10] Li, X., Shougat, M. R. E. U., Mollik, T., **Beal, A. N.**, Dean, R. N., & Perkins, E. (2021). Stochastic effects on a Hopf adaptive frequency oscillator. Journal of Applied Physics, 129(22), 224901.

[J09] Li, X., Shougat, M.R.E.U., Kennedy, S., Fendley, C.,**Beal, A. N.**, Dean, R.N., & Perkins, E. (2021). A
Four-state Adaptive Hopf Oscillator. Plos one, 16(3), e0249131.

[J08] Rashid, M. I., Ferdaus, F., Talukder, B. B., Henny, P., **Beal, A. N.**, & Rahman, M. T. (2020). True Random Number Generation Using Latency Variations of FRAM. IEEE Transactions on Very Large Scale Integration (VLSI) Systems.

[J07] Corron N.J., Cohen, S.D., **Beal, A. N.** and Blakely, J.N. (2020). Exact analytic solution for a chaotic hybrid dynamical system and its electronic realization. Chaos: An Interdisciplinary Journal of Nonlinear Science, 30 (7), 073112

[J06] **Beal, A. N.**, Cohen, S. D., & Syed, T. M. (2020). Generating and Detecting Solvable Chaos at Radio
Frequencies with Consideration to Multi-User Ranging. Sensors, 20(3), 774.

[J05] **Beal, A. N.**, Blakely, J. N., & Corron, N. J. (2018). Extended-Bandwidth Negative Impedance Converters
by Nested Networks. IEEE Transactions on Circuits and Systems II: Express Briefs, 65(9), 1134-1138.

[J04] Milosavljevic, M. S., Blakely, J. N., **Beal, A. N.**, & Corron, N. J. (2017). Analytic solutions throughout a period doubling route to chaos. Physical Review E, 95(6), 062223.

[J03] Bailey, J. P., **Beal, A. N.**, Dean, R. N., & Hamilton, M. C. (2016). A digital matched filter for reverse time chaos. Chaos: An Interdisciplinary Journal of Nonlinear Science, 26(7), 073108.

[J02] **Beal, A. N.**, Tatarchuck, J., Stevens, C. B., Baginski, T. A., Hamilton, M. C., & Dean, R. N. (2015).
Design Considerations of High-Current Density Capacitors Micromachined for Si Interposers. Journal of
Microelectronics and Electronic Packaging, 12(3), 139-145.

[J01] Bailey, J. P., **Beal, A. N.**, Dean, R. N., Hamilton, M. C., & Tugnait, J. K. (2014). High-frequency reversetime chaos generation using digital chaotic maps. Electronics Letters, 50(23), 1683-1685.

Journal | Publisher | Scopus CiteScore | Impact Factor |
---|---|---|---|

IEEE Access | IEEE | 6.7 (2021) | 3.476 (2021) |

Remote Sensing | MDPI | 6.6 (2020) | 4.848 (2020) |

PLOS One | PLOS | 5.3 (2020) | 3.240 (2020) |

Transactions on Circuits & Systems II | IEEE | 5.1 (2019) | 2.814 (2019) |

Sensors | MDPI | 5.0 (2019) | 3.275 (2019) |

Transactions on VLSI | IEEE | 4.9 (2019) | 2.037 (2019) |

Chaos | AIP | 4.4 (2019) | 2.832 (2019) |

Physical Review E | APS | 4.2 (2019) | 2.296 (2019) |

Journal of Applied Physics | AIP | 4.2 (2019) | 2.286 (2019) |

Chaos Theory & Applications | Akif Akgul | 3.9 (2023) | 3.778 (2023) |

Electronics Letters | IET | 3.3 (2019) | 1.316 (2019) |

Review of Scientific Instruments | AIP | 3.1 (2021) | 1.843 (2021) |

**Book Chapters:**

[B01] Blakely, J. N., Corron, N. J., **Beal, A. N.** & Milosavljevic, M. S. (2017). Chaos in Optimal Signals for
Radar and Communications in Nonlinear Systems: Design, Applications and Analysis (395-448), Christos
K. Volos (Editor), Nova Scientific Publishing

**Patents Granted:**

[P04] Cohen, S.D. and **Beal, A. N.** (2023). Target ranging with subsampled noise correlation. U.S. Patent
11,733,364, Assignee: Kratos SRE Inc., University of Alabama in Huntsville, Filed: May, 21, 2021, Published: August 22, 2023.

[P03] Multiple patents from - Starkey, M.M. Riggs, L.S. and **Beal, A. N.** (2020). Waste receptacle configured
to differentiate items. U.S. Patent 10,795,045, Assignee: EN Medical, LLC, Filed: January 31, 2018,
Published: October 6, 2020. Summary of associated work:

- Awarded 2022: US Patent 11,402,535
- Awarded 2020: US Patent 10,795,045
- Awarded 2017: US Patent 9,556,599

[P02] Starkey, M.M. and McNeil, R.L. and Perez, J.C. and Riggs, L.S. and **Beal, A. N.** (2017). Detecting passing of unintended objects through throat of under-sink disposal. U.S. Patent 9,694,364, Publication No. US9694364 B2, Application No. US 14/896,435, Assignee: Samelin Innovations, LLC, Filed: May 22,
2015, Published: July 4, 2017. Also published as US9694364, WO2016190889A1

[P01] Multiple patents from - Starkey, M.M. and Riggs, L.S. and **Beal, A. N.** (2017). Waste receptacle. US Patent 9,637,309, Publication No. US9637309 B2, Application No. US 14/815,605, Assignee: Edison Nation Medical, LLC, Filed: Jul 31, 2015, Published: May 2, 2017. Summary of associated work:

- Awarded 2023: US Patent 11,551,538
- Awarded 2022: US Patent 11,380,188
- Awarded 2020: US Patent 10,815,053
- Awarded 2020: US Patent 10,777,069
- Awarded 2018: US Patent 10,121,354
- Awarded 2018: US Patent 10,077,153
- Awarded 2017: US Patent 9,840,369
- Awarded 2017: US Patent 9,842,484
- Awarded 2017: US Patent 9,637,309

**Refereed Conference Papers:**

Baker, D., **Beal, A. N.**, Joiner, L, Syed, T. M. (2023, April). A Low-Cost Modified Energy Detection-Based Spectrum Sensing Algorithm with GNU Radio for Cognitive Radio. In SoutheastCon 2023 (pp. 833-837). Orlando, FL. IEEE. Accepted January 2023

Carroll, R., Riggs, L. S., Waller, M. L., Hartline, M. B., **Beal, A. N.** (2023, March). Modeling and Measurement of the Isolation Effectiveness of Inductive Metal Screens. In 2023 International Applied Computational Electromagnetics Society Symposium (ACES) (pp. 1-2). Monterey, CA. IEEE.

Li, X., Shougat, M. R. E. U., Mollik, T., Dean, R. N., **Beal, A. N.** & Perkins, E., (2022 July) Stochastic Response of Hopf Adaptive Frequency Oscillator, ENOC 2020 (2022) 10th European Nonlinear Dynamics Conference, Lyon, France

Syed, T. M., Oh, D. R., & **Beal, A. N.** (2021, March). Synchronizing Solvable Chaotic Oscillators. In
SoutheastCon 2021 (pp. 1-4). IEEE.

Syed,T.M., **Beal, A. N.** and Joiner, L. (2020, November). Solvable Chaos As a Tool for Evaluating Wideband Delay Cells in Matched Filters. IEEE International Conference on Electronics, Circuits and Systems (ICECS) 2020, Glasgow, Scotland.

**Beal, A. N.**, Erickson, C.J., Alim, M.E., & Nguyen, E. D. (2020, March). Stabilizing Long-period Orbits in Chaotic Oscillators with Open-source Hardware. In 2020 SoutheastCon (pp. 1-5). IEEE.

**Beal, A. N.**, Blakely, J. N., & Corron, N. J. (2019, April). Driven ring oscillators as FPGA entropy sources. In 2019 SoutheastCon (pp. 1-6). IEEE.

Stevens, C. B., Dean, R. N., Perkins, E., Li, C., **Beal, A. N.**, & Flowers, G. T. (2019, April). A Nonlinear MEMS Resonator for Generating AC Voltages Without Electronics. In 2019 SoutheastCon (pp. 1-7). IEEE.

**Beal, A. N.**, & Blakely, J.N. (2018). Szilard’s information engine: Recent progress and a chaotic analog, IMAPS 14th International Conference and Exhibition of Device Packaging, Proceedings - Additional Conferences (Device Packaging, HiTEC, HiTEN, & CICMT); Fountain Hills, AZ, March 6-8, 2018

**Beal, A. N.**, & R.N. Dean. (2017). Using SPICE to model nonlinearities resulting from heterogeneous
integration of complex systems, IMAPS 50th Anniversary International Symposium on Microelectronics;
Vol. 2017, No. 1, pp. 274-279.; Raleigh, NC; October 2017

**Beal, A. N.** (2017, January). Modeling Nonlinear MEMS Beams and the Chaotic Duffing Oscillator in
SPICE. In Additional Conferences (Device Packaging, HiTEC, HiTEN, & CICMT) (Vol. 2017, No. DPC, pp.
1-90). International Microelectronics Assembly and Packaging Society.

Rhea, B. K., Werner, F. T., Harrison, R. C., **Beal, A. N.**, & Dean, R. N. (2017, January). Electronic chaotic oscillator realization with potential uses in communication systems. In Additional Conferences (Device Packaging, HiTEC, HiTEN, & CICMT) (Vol. 2017, No. DPC, pp. 1-35). International Microelectronics Assembly and Packaging Society.

**Beal, A. N.**, Blakely, J. N., Corron, N. J., & Dean Jr, R. N. (2016, May). High frequency oscillators for chaotic radar. In Radar Sensor Technology XX (Vol. 9829, p. 98290H). International Society for Optics and Photonics. Invited Talk

**Beal, A. N.**, & Dean, R. N. (2016). A Survey of Nonlinear Phenomena and Chaos in Microsystems and
Packaging. Additional Papers and Presentations, 2016(DPC), 001498-001542.

Werner, F. T., Rhea, B. K., **Beal, A. N.**, Abell, W. E., Bailey, J. P., Harrison, R. C., … & Hamilton,
M. C. (2016). A Matched Filter Developed for Chaotic Waveforms. Additional Papers and Presentations,
2016(DPC), 001613-001631.

**Beal, A. N.**, & Dean, R. N. (2015). A random stimulation source for evaluating MEMS devices using an
exact solvable chaotic oscillator. Additional Papers and Presentations, 2015(DPC), 001594-001625.

Baginski T.A., Dean, R.N., Hamilton M.C., **Beal, A. N.**, Tatarchuk, J., & Stevens, C.B. (2014). Micromachined high density embedded capacitor technologies for energy storage applications. NDIA 57th Annual FUZE Conference, Newark, NJ, July 29-30, 2014

**Beal, A. N.**, Tatarchuk, J., Stevens, C., Baginski, T., Hamilton, M., & Dean, R. N. (2014). Design Considerations and Ring-down Characteristics of Micromachined, High Current Density Capacitors. Additional Papers and Presentations, 2014(DPC), 001380-001406.

**Beal, A. N.**, Stevens, C., Baginski, T., Hamilton, M., & Dean, R. (2013). Design, simulation and testing of high density, high current micro-machined embedded capacitors. Additional Papers and Presentations, 2013(DPC), 000515-000534.

**Beal, A. N.**, Bailey, J. P., Hale, S. A., Dean, R. N., Hamilton, M., Tugnait, J. K., … & Corron, N. J. (2012, October). Design and simulation of a high frequency exact solvable chaotic oscillator. In MILCOM 2012-2012 IEEE Military Communications Conference (pp. 1-6). IEEE.

**Beal, A. N.**, Baginski, T., Dean, R., & Hamilton, M. (2012). Micromachined high density embedded capacitor technologies for silicon interposers. Additional Papers and Presentations, 2012(DPC), 001192-001222.

Ellis, C., **Beal, A. N.**, & Dean, R. (2011). Cu MEMS. Additional Papers and Presentations, 2011(DPC),
000952-000973.

Dean, R., Burch, N., Black, M., Beal, A. **Beal, A. N.**, & Flowers, G. (2011, April). Microfibrous metallic
cloth for acoustic isolation of a MEMS gyroscope. In Industrial and Commercial Applications of Smart
Structures Technologies 2011 (Vol. 7979, p. 797909). International Society for Optics and Photonics.