Conference Proceedings

Student advisees identified by an asterisk*

  1. S. Y. Lee*, D. L. West*, S. A. Dasari*, and N. Ghalichechian. “Highly Integrated mmWave Antenna-on-Chip Arrays Using Substrate-Integrated Air Cavities”. IEEE International Symposium On Phased Array Systems and Technology (ARRAY), Boston, MA, USA. 15-18 October, 2024.

  2. T. G. Williamson* and N. Ghalichechian. “A 10–50 GHz Ultrawideband Low Loss mmWave VO2 based Phase Shifter for Passive Scanning Arrays”. IEEE International Symposium On Phased Array Systems and Technology (ARRAY), Boston, MA, USA. 15-18 October, 2024.

  3. X. Zhang*, W. Disharoon*, and N. Ghalichechian. ”A K-Band Beam Steerable Metal- Only Transmitarray Unit Cell using Out-of-Plane Rotation”, 2024 IEEE International Symposium on Antennas and Propagation and INC/USNC‐URSI Radio Science Meeting (AP-S/INC-USNC-URSI), Firenze, Italy, 2024, pp. 1859-1860, doi: 10.1109/AP-S/INC-USNC-URSI52054.2024.10686415.

  4. T. G. Williamson*, T. R. Harris, G. Che, and N. Ghalichechian, “mmWave Reconfigurable and Miniature On-Chip Filter Based on Vanadium Dioxide for Array Applications,” Government Microcircuit Applications and Critical Technology Conference (GOMAC-Tech), Charleston, SC, USA, 2024.

  5. T. G. Williamson*, T. R. Harris, G. Che, and N. Ghalichechian, “Novel Compact Tunable Filter Prototype Realized with Vanadium Dioxide,” 2024 IEEE International Microwave Filter Workshop (IMFW), Cocoa Beach, FL, USA, 2024, pp. 15-17, doi: 10.1109/IMFW59690.2024.10477139.

  6. S. Y. Lee*, T. G. Williamson*, D. West*, S. A. Dasari*, W. Disharoon* and N. Ghalichechian, “Integration of Low-Loss mmWave On-Chip Arrays,” 2024 18th European Conference on Antennas and Propagation (EuCAP), Glasgow, United Kingdom, 2024, pp. 1-5, doi: 10.23919/EuCAP60739.2024.10501271.

  7. D. West*, W. Pavlick*, J. Sim, J. Dai, S. Wu, J. Eichenberger*, R. R. Zhao, and N. Ghalichechian, “Reconfiguration of Electromagnetic Metasurfaces Using Tunable Shape Morphing Structures,” 2024 18th European Conference on Antennas and Propagation (EuCAP), Glasgow, United Kingdom, 2024, pp. 1-4, doi: 10.23919/EuCAP60739.2024.10501209.

  8. S. Saha, P. B. Kanyaka, M. Lust*, N. Ghalichechian, V. R. Rao and M. S. Baghini, “Heterogeneous CMOS-MEMS based Boost Converter for 2.4 GHz RF energy Harvester,” 2024 37th International Conference on VLSI Design and 2024 23rd International Conference on Embedded Systems (VLSID), Kolkata, India, 2024, pp. 425-430, doi: 10.1109/VLSID60093.2024.00077.

  9. M. Meng*, A. Wu*, Z. Stokesberry*, T. Zhao*, S. Y. Lee*, and N. Ghalichechian, “Robotic Radiation Pattern Measurement System for 6–110 GHz Based in Both Near Field and Far Field,” 2023 IEEE International Opportunity Research Scholars Symposium (ORSS), Atlanta, GA, USA, 2023, pp. 11-15, doi: 10.1109/ORSS58323.2023.10161734.

  10. D. West*, S. Y. Lee*, M. Saxena, T. Igic, N. Ghalichechian and G. Durgin, “Conductive Mesh on Glass Rectennas for Space Ambient Power,” 2023 IEEE International Conference on Wireless for Space and Extreme Environments (WiSEE), Aveiro, Portugal, 2023, pp. 111-115, doi: 10.1109/WiSEE58383.2023.10289531.

  11. D. West*, M. Lust* and N. Ghalichechian, “Characterization of VO2-Based Reconfigurable Linear-to-Circular Polarization Converter,” 2023 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (USNC-URSI), Portland, OR, USA, 2023, pp. 317-318, doi: 10.1109/USNC-URSI52151.2023.10238101.

  12. S. Y. Lee* and N. Ghalichechian, “On-Chip 60 GHz Coplanar Folded Slot Antenna with Air Cavity and Reflector,” 2023 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (USNC-URSI), Portland, OR, USA, 2023, pp. 521-522, doi: 10.1109/USNC-URSI52151.2023.10238210.

  13. W. Disharoon* and N. Ghalichechian, “Vanadium Dioxide Aperture-Coupled mmWave 1–bit Reconfigurable Dual Polarization Reflectarray,” 2023 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (USNC-URSI), Portland, OR, USA, 2023, pp. 1505-1506, doi: 10.1109/USNC-URSI52151.2023.10238249.

  14. S. A. Dasari*, T. G. Williamson* and N. Ghalichechian, “Silicon Carbide Slot Dielectric Resonator Antenna for High Temperature and Power Applications,” 2023 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (USNC-URSI), Portland, OR, USA, 2023, pp. 1887-1888, doi: 10.1109/USNC-URSI52151.2023.10238170.

  15. T. G. Williamson*, S. Y. Lee*, S. A. Dasari* and N. Ghalichechian, “Towards a 5G n260 Band Phased Array Based on Vanadium Dioxide Switches,” 2023 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (USNC-URSI), Portland, OR, USA, 2023, pp. 1889-1890, doi: 10.1109/USNC-URSI52151.2023.10237531.

  16. S. Y. Lee* and N. Ghalichechian, “On-chip mmWave Slot Antenna Arrays with Improved Radiation Efficiency,” 2023 International Workshop on Antenna Technology (iWAT), Aalborg, Denmark, 2023, pp. 1-4, doi: 10.1109/iWAT57058.2023.10171620.

  17. D. West*, M. Lust*, J. A. Ramsey*, T. G. Williamson*, W. Disharoon*, S. A. Dasari*, and N. Ghalichechian, “VO2-Based Reconfigurable Electromagnetic Surfaces,” 2023 URSI International Symposium on Electromagnetic Theory (EMTS), Vancouver, BC, Canada 2023.

  18. W. Disharoon*, S. Y. Lee*, J. Ramsey* and N. Ghalichechian, “Overview of Reconfiguration Technologies for Reflectarrays and Trasmitarrays”, 17th European Conference on Antennas and Propagation (EuCAP), Florence, Italy, March 26-31, 2023, pp. 1-5, doi: 10.23919/EuCAP57121.2023.10133178.

  19. T. Williamson*, M. Lust*, and N. Ghalichechian, “Novel Ka-Band Phase Shifter Design Based on Vanadium Dioxide Switches for 5G Applications”, 2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, Denver, CO, July 10-15, 2022. pp. 49-50, doi: 10.1109/AP-S/USNC-URSI47032.2022.9886855.

  20. S. Chen*, M. Lust*, and N. Ghalichechian, “Exploiting Nonlinear Properties of the VO2 in mmWave Antenna-Coupled Sensor”, 2022 Solid-State Sensor, Actuator, and Microsystems Workshop, Hilton Head Island, SC, June 5-9, 2022, pp. 1-4.

  21. J. Ramsey*, K.Q. Henderson* and N. Ghalichechian, “Thermally Actuated Vanadium Dioxide Millimeter Wave Reflectarray”, 16th European Conference on Antennas and Propagation (EuCAP), Madrid, Spain, March 27- April 1, 2022, pp. 1-3, doi: 10.23919/EuCAP53622.2022.9768925.

  22. J. Eichenberger*, J. Dai, S. Wu, R. Zhao, and N. Ghalichechian, “Magnetically Reconfigurable Band-Reject Metasurface Filter”, USNC-URSI National Radio Science Meeting, Boulder, CO, Jan 4-8, 2022. pp. 170-171, doi: 10.23919/USNC-URSINRSM57467.2022.9881430.

  23. J. Eichenberger*, N. Ghalichechian, “Novel Slot Array Mechanical Reconfiguration Approach Based on Accordion Structure and Micro-actuator”, IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, Singapore, 4-10 December 2021. pp. 1775-1776, doi: 10.1109/APS/URSI47566.2021.9704333.

  24. J. Ramsey*, K. Henderson*, N. Ghalichechian, “Reconfigurable Reflectarray Unit Cell using Vanadium Dioxide”, IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, Singapore, 4-10 December 2021. pp. 1763-1764, doi: 10.1109/APS/URSI47566.2021.9704486.

  25. M. Lust* and N. Ghalichechian, “VO2-Based Reconfigurable Meanderline Polarizer at Ka-band”, IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, Singapore, 4-10 December 2021. pp. 551-552, doi: 10.1109/APS/URSI47566.2021.9704350.

  26. K.Q. Henderson* and N. Ghalichechian, “Steerable Reflectarray Using Tunable Height Dielectric for High-Power Applications”, 14th European Conference on Antennas and Propagation (EuCAP), Copenhagen, Denmark, March 15-20, 2020. pp. 1-4, doi: 10.23919/EuCAP48036.2020.9135191.

  27. C. Matos*, J. Li*, and N. Ghalichechian, “Robotically Controlled Pattern Measurements of 60 GHz Phased Array Antenna”, 41st Annual Symposium of the Antenna Measurement Techniques Association, San Diego, CA, USA, October 06-11, 2019, pp. 1-2, doi: 10.23919/AMTAP.2019.8906311.

  28. S. Chen*, M. Lust*, and N. Ghalichechian, “A Vanadium Dioxide Microbolometer in the Transition Region for Millimeter Wave Imaging”, IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, Atlanta, Georgia, July 7-12, 2019, pp. 1641-1642, doi: 10.1109/APUSNCURSINRSM.2019.8888891.

  29. K. Q. Henderson* and N. Ghalichechian, “Steerable Spiral Slot Reflectarray at 66 GHz Using Micromachined Movable Silicon Slab”, IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, Atlanta, Georgia, July 7-12, 2019, pp. 1949-1950, doi: 10.1109/APUSNCURSINRSM.2019.8888895.

  30. J. Li* and N. Ghalichechian, “Suspended Highly-efficient On-chip Phased Array Antenna at 60 GHz”, IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, Atlanta, Georgia, July 7-12, 2019. pp. 2195-2196, doi: 10.1109/APUSNCURSINRSM.2019.8888390.

  31. K.Q. Zhao*, G. Senger*, and N. Ghalichechian, “3D-Printed Frequency Scanning Slotted Waveguide Array with Wide Band Power Divider”, 2019 United States National Committee of URSI National Radio Science Meeting (USNC-URSI NRSM), Boulder, CO, USA, January 9-12, 2019, pp. 1-2, doi: 10.23919/USNC-URSI-NRSM.2019.8712999.

  32. J. Eichenberger*, E. Yetisir, and N. Ghalichechian, “Antipodal UWB Vivaldi Antenna with Pseudoelement and Notched Flares for 2.5-57 GHz Applications”, IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, Boston, MA, USA, July 08-13, 2018, pp. 270-1758, doi: 10.1109/APUSNCURSINRSM.2018.8609262.

  33. K.H. Jeong* and N. Ghalichechian, “Design, Fabrication and Measurement of a Millimeter Wave Fresnel Lens using Additive”, IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, Boston, MA, USA, July 08-13, 2018, pp. 1879-1880, doi: 10.1109/APUSNCURSINRSM.2018.8608842.

  34. J. Li* and N. Ghalichechian, “A High-gain Large-scanning 60 GHz Via-fed Patch Phased Array Antenna”, IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, Boston, MA, USA, July 08-13, 2018, doi: 10.1109/APUSNCURSINRSM.2018.8608446.

  35. K.Q. Henderson* and N. Ghalichechian, “Metal Only Spiral Slot Reflectarray Element Operating at 66 GHz”, IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, Boston, MA, USA, July 08-13, 2018, pp. 1633-1634, doi: 10.1109/APUSNCURSINRSM.2018.8608825.

  36. S. Chen* and N. Ghalichechian “The Design of High-Responsivity Millimeter Wave Imager Using Vanadium Dioxide Microbolometers”, 12th European Conference on Antennas and Propagation (EuCAP), London, April 9-13, 2018, pp. 1-4, doi: 10.1049/cp.2018.0560.

  37. B. Ghassemiparvin* and N. Ghalichechian “W-Band True-Time Delay Phase Shifters Using Paraffin Microactuators”, at 12th European Conference on Antennas and Propagation (EuCAP 2018), London, 2018, April 9-13, 2018, doi: 10.1049/cp.2018.0522.

  38. B. Ghassemiparvin* and N. Ghalichechian, “Broadband Complex Permittivity Measurement of Paraffin Films at 26 GHz–1 THz Using Time Domain Spectroscopy”, IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, San Diego, CA, USA, July 9-14, 2017, pp. 887-888, doi: 10.1109/APUSNCURSINRSM.2017.8072486.

  39. B. Ghassemiparvin*, S. Shah* and N. Ghalichechian, “Novel Paraffin-based 100-GHz Variable Capacitors for Reconfigurable Antennas”, 11th European Conference on Antennas and Propagation (EuCAP), Paris, March 19-24, 2017, pp. 3506-3510, doi: 10.23919/EuCAP.2017.7928379.

  40. K. Keshtkaran* and N. Ghalichechian, “60 GHz Capacitively Probe-Fed Patch Arrays with Suspended Elements”, 11th European Conference on Antennas and Propagation (EuCAP), Paris, France, March 19-24, 2017, pp. 2511-2513, doi: 10.23919/EuCAP.2017.7928510.

  41. B. Ghassemiparvin* and N. Ghalichechian, “Reconfigurable Millimeter-wave Antennas using Paraffin-Based MEMS Capacitors”, 10th European Conference on Antennas and Propagation (EuCAP), Davos,  Switzerland, April 10-15, 2016, pp. 1-4, doi: 10.1109/EuCAP.2016.7481595.

  42. K. Keshtkaran* and N. Ghalichechian, “Suspended 60 GHz Phased Array Antenna With High Efficiency”, 2016 International Workshop on Antenna Technology (iWAT), Cocoa Beach, FL, USA,  February 29 – March 2, 2016, pp. 37-39, doi: 10.1109/IWAT.2016.7434794.

  43. B. Ghassemiparvin* and N. Ghalichechian, “Permittivity and Dielectric Loss Measurement of Paraffin for mW and THz Applications,” 2016 International Workshop on Antenna Technology (iWAT), Cocoa Beach, FL, USA,  February 29 – March 2, 2016, pp. 48-50, doi: 10.1109/IWAT.2016.7434797.

  44. D. K. Papantonis, E. Yetisir, N. Ghalichechian and J. L. Volakis, “Tunable band rejection in a tightly-coupled array using varactor diodes,” 2016 International Workshop on Antenna Technology (iWAT), Cocoa Beach, FL, USA,  February 29 – March 2, 2016, pp. 20-22, doi: 10.1109/IWAT.2016.7434789.

  45. E. Yetisir, N. Ghalichechian, J. Volakis, “Wideband & Wide Angle Scanning Array with Parasitic Superstrate”, IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, Vancouver, BC, Canda, July 19-24, 2015, pp. 2521-2522, doi: 10.1109/APS.2015.7305649.

  46. D. Papantonis, N. Ghalichechian, J. Volakis, “UWB Arrays With Tunable Band Rejection”, IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, BC, 2015, pp. 2277-2278, doi: 10.1109/APS.2015.7305527.

  47. V. Sanphuang, N. Ghalichechian, N. Nahar, J. Volakis, “Bandwidth Reconfigurable THz Filter Employing Phase-Change Material”, IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, BC, 2015, pp. 2289-2290, doi: 10.1109/APS.2015.7305533.

  48. D. Papantonis, N. Ghalichechian, J. Volakis, “Reconfigurable Ultra-Wideband Array with Tunable Band Rejection across a 7:1 Bandwidth”, 2015 IEEE MTT-S International Microwave Symposium (IMS), Phoenix, AZ, USA, May 17-22, 2015, pp. 1-3, doi: 10.1109/MWSYM.2015.7166828.

  49. L. Chau, J. G. Ho, X. Lan, G. Altvater, R. M. Young, N. El-Hinnawy, D. Nichols, J Volakis, N Ghalichechian., “Optically-controlled GeTe phase change switch and its applications in reconfigurable antenna arrays,” Proceedings of SPIE- The International Society of Optical Engineering, Volume 9479, Baltimore, MD, April 20, 2015, http://dx.doi.org/10.1117/12.2179852.

  50. D. K. Papantonis, M. Novak, N. Ghalichechian and J. L. Volakis, “Low-profile ultra-wideband reconfigurable tightly-coupled arrays,” 10th European Conference on Antennas and Propagation (EuCAP), Lisbon, 2015, pp. 1-4. Electronic ISBN: 978-8-8907-0185-6.

  51. V. Sanphuang, N. Ghalichechian, N. Nahar, J. Volakis, “Phase Change Materials for Reconfigurability in THz band,” NAECON 2014 – IEEE National Aerospace and Electronics Conference, Dayton, OH, 2014, pp. 319-320, doi: 10.1109/NAECON.2014.7045827.

  52. V. Sanphuang, N. Ghalichechian, N. Nahar, J. Volakis, “Reconfigurable THz Filters with Integrated Micro-Heater,” IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, TN, USA, July 6-11, 2014, pp. 565-566, doi: 10.1109/APS.2014.6904613.

  53. M.I. Beyaz, M. McCarthy, N. Ghalichechian, and R. Ghodssi, “Photodiode Position Sensors for Integrated Feedback Control of a Long-Range Micropositioner”, Proceedings of the 2008 IEEE Sensors Conference, Lecce, Italy, October 26-29, 2008, http://dx.doi.org/10.1109/icsens.2008.4716563.

  54. N. Ghalichechian, M. McCarthy, M. I. Beyaz, and R. Ghodssi, “Measurement and Modeling of Friction in Linear and Rotary Micromotors Supported on Microball Bearings,” Proceedings of the 21th IEEE International Conference on Micro Electro Mechanical Systems, Tuscan, Arizona, Jan 13-17, 2008, http://dx.doi.org/10.1109/memsys.2008.4443704.

  55. M. I. Beyaz, N. Ghalichechian, and R. Ghodssi, “Towards an Autonomous Electrostatic Micromotor: Integrated Feedback Control,” Proceedings of the 21th IEEE International Conference on Micro Electro Mechanical Systems, Tuscan, Arizona, Jan 13-17, 2008, http://dx.doi.org/10.1109/memsys.2008.4443698.

  56. M. I. Beyaz, N. Ghalichechian, and R. Ghodssi, “Toward Smart Micromachines with Integrated Feedback Control,” International Semiconductor Device Research Symposium (ISRS 2007), College Park, MD, December 11 – 14, 2007, http://dx.doi.org/10.1109/isdrs.2007.4422471.

  57. N. Ghalichechian, A. Modafe, M. I. Beyaz, and R. Ghodssi, “A Rotary Micromotor Supported on Microball Bearings,” The 14th International Conference on Solid-State Sensors, Actuators, and Microsystems (Transducers ’07), pp. 1123-1126, Lyon, France, June 10-14, 2007, http://dx.doi.org/10.1109/sensor.2007.4300332

  58. N. Ghalichechian, A. Modafe, M. I. Beyaz, C. M. Waits, and R. Ghodssi, “Design and Fabrication of a Rotary, Electrostatic Micromotor Supported on Microball Bearings,” Sixth International Workshop on Micro and Nanotechnology for Power Generation and Energy Conversion Applications (Power MEMS ’06), pp. 227-230, Berkeley, CA, USA, Nov 29-Dec 1, 2006.

  59. N. Ghalichechian, A. Modafe, A. Frey, J. H. Lang, and R. Ghodssi, “Dynamic Characterization of a Linear Variable-Capacitance Micromotor”, 2006 Solid-State Sensor, Actuator, and Microsystems Workshop, pp. 19-22, Hilton Head Island, SC, June 4-8, 2006. (This paper is available in the conference proceeding but no ISBN/doi is located)

  60. A. Modafe, N. Ghalichechian, A. Frey, J. H. Lang, and R. Ghodssi, “Microball-Bearing-Supported Electrostatic Micromachines with Polymer Dielectric Films for Electromechanical Power Conversion,” Fifth International Workshop on Micro Nano Technology for Power Generation and Energy Conversion Applications (Power MEMS ‘05), pp.173-6, Tokyo, Japan, November 28-30, 2005. (This paper is available in the conference proceeding but no ISBN/doi is located)

  61. A. Modafe, N. Ghalichechian, and R. Ghodssi, “Multilevel Interconnection and Isolation for Electrostatic MEMS Using Embedded Benzocyclobutene in Silicon Process”, Twenty Second International VLSI Multilevel Interconnection (VMIC) Conference, Fremont, CA, October 4-6, 2005 (invited paper).

  62. A. Modafe, N. Ghalichechian, J. H. Lang, and R. Ghodssi, “A Microball-Bearing-Supported Linear Electrostatic Micromotor with Benzocyclobutene Polymer Insulating Layers,” The 13th International Conference on Solid-State Sensors, Actuators, and Microsystems (Transducers ’05), pp. 693-6, Seoul, Korea, June 5-9, 2005, http://dx.doi.org/10.1109/sensor.2005.1496511.

  63. X. Tan, A. Modafe, R. Hergert, N. Ghalichechian, B. Shapiro, and R. Ghodssi, “Vision-based Microtribological Characterization of Linear Microball Bearings”, Proceedings of 2004 ASME/STLE International Joint Tribology Conference, Long Beach, CA, Oct 24-27, 2004, http://dx.doi.org/10.1115/trib2004-64334.

  64. A. Modafe, N. Ghalichechian, B. Kleber and R. Ghodssi, “Electrical Characterization of BCB for Electrostatic Microelectromechanical Devices”, Proceedings of Materials Research Society 2003 Fall Meeting, Boston, MA, December 1-5, 2003, http://dx.doi.org/10.1557/proc-782-a5.69.