Papers Published in Refereed Conference Proceedings:
628. A. Komarov, D. Isleifson, D. Barber, and L. Shafai, 2013, “Modeling and Measurements of Radar Backscatter from Snow-Covered Sea Ice”, accepted, IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2013, Melbourne, Australia, July 21-26.
627. F. Safari, and L. Shafai, 2013, “Investigation of the Effect of Reflect Array Element Periodicity on Aperture Efficiency”, accepted 2013 IEEE International Symposium on Antennas and Propagation and CNC/USNC/URSI National Radio Science Meeting, 2013 APS/URSI, Orlando, FL, July 7-12.
626. A. Rashidian, and L. Shafai, 2013, “A Highly-Efficient Planar Dielectric Radiating Structure”, accepted 2013 IEEE International Symposium on Antennas and Propagation and CNC/USNC/URSI National Radio Science Meeting, 2013 APS/URSI, Orlando, FL, July 7-12.
625. Md. J. Feroj, V. Okhmatovski, and L. Shafai, 2013, “On Use of Inhomogeneous Media For Elimination of Inverse Problem Ill-Posedness”, accepted 2013 IEEE International Symposium on Antennas and Propagation and CNC/USNC/URSI National Radio Science Meeting, 2013 APS/URSI, Orlando, FL, July 7-12.
624. A. Rashidian, M. Tayfeh Aligodarz, D. Klymyshyn, M. Boerner, L. Shafai, and J. Mohr, 2013, “Fabrication of Photoresist-Based Polymer Resonator Antennas Using Ultra-Thick SU-8 Based Dry Films”, accepted 2013 IEEE International Symposium on Antennas and Propagation and CNC/USNC/URSI National Radio Science Meeting, 2013 APS/URSI, Orlando, FL, July 7-12.
623. M. Asefi, M. Ostadrahimi, J. LoVetri and L. Shafai, 2013, “Analysis of a 3D Microwave Imaging System”, accepted 2013 IEEE International Symposium on Antennas and Propagation and CNC/USNC/URSI National Radio Science Meeting, 2013 APS/URSI, Orlando, FL, July 7-12.
622. A.M. Mehrabani and L. Shafai, 2013, “A Physical Interpretation of Effective Dielectric Properties of Slow-Wave Transmission Lines in Small Antenna Applications”, accepted 2013 IEEE International Symposium on Antennas and Propagation and CNC/USNC/URSI National Radio Science Meeting, 2013 APS/URSI, Orlando, FL, July 7-12.
621. M. Ostadrahimi, M. Asefi, J. LoVetri, G. Bridges and L. Shafai, 2013, “An MST-based Microwave Tomography System using Homodyne Receiver”, accepted 2013 IEEE International Symposium on Antennas and Propagation and CNC/USNC/URSI National Radio Science Meeting, 2013 APS/URSI, Orlando, FL, July 7-12.
620. Z. Allahgholi Pour and L. Shafai, 2013, “An Overview of Latest Advancements in Displaced Phase Centre Antenna (DPCA) Techniques”, accepted 2013 IEEE International Symposium on Antennas and Propagation and CNC/USNC/URSI National Radio Science Meeting, 2013 APS/URSI, Orlando, FL, July 7-12.
619. S.I. Latif, D. Flores-Tapia, L. Shafai and S. Pistorius, 2013, “An Ultrawideband Elliptical Monopole Antenna for Breast Microwave Radar Imaging”, accepted 2013 IEEE International Symposium on Antennas and Propagation and CNC/USNC/URSI National Radio Science Meeting, 2013 APS/URSI, Orlando, FL, July 7-12.
618. S.I. Latif, M. Qudrat-E-Maula and L. Shafai, 2013, “Study of Stacked Circular Patch Antennas with Circular Symmetric Patterns as Reflector Feeds”, accepted 2013 IEEE International Symposium on Antennas and Propagation and CNC/USNC/URSI National Radio Science Meeting, 2013 APS/URSI, Orlando, FL, July 7-12.
617. Z. Allahgholi Pour and L. Shafai, 2013, “Applications of Tri-Mode Waveguide Feeds in Adaptive Virtual Array Antennas”, accepted 2013 URSI Commission B International Symposium on Electromagnetic Theory (EMTS), Hiroshima, Japan, May 20-24.
616 L. Shafai, S. Latif and C. Shafai, 2013, “Loss Reduction in Planar Circuits and Antennas Over a Ground Plane Using Engineered Conductors”, Accepted, European Conference on Antennas and Propagation, Gothenburg, Sweden, April 8 – 12.
615. Z. Allahgholi Pour and L. Shafai, 2012, “Exploring Further Potentials of Over-Moded Primary Feeds for Parabolic Reflector Antennas”, (Invited Paper) IEEE International Conference on Wireless Information Technology and Systems (ICWITS), Maui, Hawaii, USA, November 11-16.
614. Z. Allahgholi Pour and L. Shafai, 2012, “Cross Polarization Performance of High Gain Antennas in the Presence of Phase Errors”, (Invited Paper) IEEE International Conference on Wireless Information Technology and Systems (ICWITS), Maui, Hawaii, USA, November 11-16.
613. L. Shafai, S. Latif, Z. Allahgholi Pour, and C. Shafai, 2012, “Antennas in Real, Meta, and Virtual Forms”, (Plenary Session) IEEE International Conference on Wireless Information Technology and Systems (ICWITS), Maui, Hawaii, USA, November 11-16.
612. L. Shafai, C. Shafai, Z. Allahgholi Pour, and S. Latif, 2012, “Mathematics in Antenna Design Innovation”, (Plenary Session) The 10th International Symposium on Antennas, Propagation, and EM Theory (ISAPE), Xi’an, China, October 22-26.
611. A. Mohamed and L. Shafai, 2012, “Effect of Layer-Misalignment on the Performance of Double-Layer Planar UWB Monopole Antennas”, 2012 IEEE International Symposium on Antennas and Propagation and CNC/USNC/URSI National Radio Science Meeting, 2012 APS/URSI, Chicago, IL, July 8-14.
610. A.M. Mehrabani and L. Shafai, 2012, “A Compact Curl Antenna with a Cavity-backed Absorber”, 2012 IEEE International Symposium on Antennas and Propagation and CNC/USNC/URSI National Radio Science Meeting, 2012 APS/URSI, Chicago, IL, July 8-14.
609. M. Qudrat-E-Maula and L. Shafai, 2012, “Size Reduction of a Rear Radiating Microstrip Fed Printed Dipole Antenna” 2012 IEEE International Symposium on Antennas and Propagation and CNC/USNC/URSI National Radio Science Meeting, 2012 APS/URSI, Chicago, IL, July 8-14.
608. S.I. Latif, D. Flores-Tapia, L. Shafai and S. Pistorius, 2012, “An Investigation on the Transmission Response of a Miniaturized Double-Ridged Horn Antenna for Radar-Based Imaging”, 2012 IEEE International Symposium on Antennas and Propagation and CNC/USNC/URSI National Radio Science Meeting, 2012 APS/URSI, Chicago, IL, July 8-14.
607. Z. Allahgholi Pour and L. Shafai, 2012, “Dual-mode Waveguide Feeds for Polarization Control in Offset Reflector Antennas”, 2012 IEEE International Symposium on Antennas and Propagation and CNC/USNC/URSI National Radio Science Meeting, 2012 APS/URSI, Chicago, IL, July 8-14.
606. A. Rashidian, D.M. Klymyshyn and L. Shafai, 2012, “A New Low-Loss and Efficient Excitation Method for Low-Permittivity Dielectric Resonator Antennas”, 2012 IEEE International Symposium on Antennas and Propagation and CNC/USNC/URSI National Radio Science Meeting, 2012 APS/URSI, Chicago, IL, July 8-14.
605. A. Rashidian, D.M. Klymyshyn and L. Shafai, 2012, “Miniaturized Multimode Dielectric Resonator Antenna with Consistent Radiation Patterns for Wideband Applications”, 2012 IEEE International Symposium on Antennas and Propagation and CNC/USNC/URSI National Radio Science Meeting, 2012 APS/URSI, Chicago, IL, July 8-14.
604. A. Baheti and L. Shafai, 2012, “Analysis of a Milti Turn 4-Arm Archimedean Spiral Antenna on Various Dielectric Substrates”, 15th International Symposium on Antenna Technology and Applied Electromagentics, ANTEM 2012, Toulouse, France, June 25-28.
603. P. Mojabi, M. Ostadrahimi, L. Shafai and J. LoVetri, 2012, “Microwave Tomography Techniques and Algorithms: A Review”, 15th International Symposium on Antenna Technology and Applied Electromagentics, ANTEM 2012, Toulouse, France, June 25-28.
602. C. Shafai, L. Shafai, 2012 and M. Safari, “Analog Microstrip Phase Shifter Using MEMS Ground Plane Elements”, 15th International Symposium on Antenna Technology and Applied Electromagentics, ANTEM 2012, Toulouse, France, June 25-28.
601. D. Isleifson and L. Shafai, 2012, “A Study on the Design of Dual-Band Perforated Microstrip Antennas for SAR Applications”, 15th International Symposium on Antenna Technology and Applied Electromagentics, ANTEM 2012, Toulouse, France, June 25-28.
600. D. Isleifson, L. Shafai and D. Barber, 2012, “Numerical Rough Surface Scattering Simulations using the FVTD Method”, 15th International Symposium on Antenna Technology and Applied Electromagentics, ANTEM 2012, Toulouse, France, June 25-28.
599. A. Rashidian, M. Tayfeh Aligodarz, D.M. Klymyshyn and L. Shafai, 2012, “A Modified Microstripline for Excitation of Wide-Band Dielectric Resonator Antennas”, 15th International Symposium on Antenna Technology and Applied Electromagentics, ANTEM 2012, Toulouse, France, June 25-28.
598. A. Rashidian and L. Shafai, “Low-Profile Dielectric Resonator Antennas for Millimeter-Wave Applications”, 15th International Symposium on Antenna Technology and Applied Electromagentics, ANTEM 2012, Toulouse, France, June 25-28.
597. A. Mohamed and L. Shafai, 2012, “Effect of Size Reduction on the Performance of UWB Vee Dipole Antennas”, 15th International Symposium on Antenna Technology and Applied Electromagentics, ANTEM 2012, Toulouse, France, June 25-28.
596. A. Mohamed and L. Shafai, 2012, “Comparison Study of the Performance of Different UWB Plate Monopole Antennas for Communication Applications”, 15th International Symposium on Antenna Technology and Applied Electromagentics, ANTEM 2012, Toulouse, France, June 25-28.
595. A.M. Mehrabani and L. Shafai, 2012, “A Miniaturized Engineered Ground Plane for Low Profile Single-Arm Spiral Antennas”, 15th International Symposium on Antenna Technology and Applied Electromagentics, ANTEM 2012, Toulouse, France, June 25-28.
594. S.I. Latif, D. Flores-Tapia, L. Shafai and S. Pistorius, 2012, “Parametric Study of a Water-Filled Double-Ridged Horn Antenna for Biomedical Imaging Application”, 15th International Symposium on Antenna Technology and Applied Electromagentics, ANTEM 2012, Toulouse, France, June 25-28.
593. S.I. Latif, D. Flores-Tapia, L. Shafai and S. Pistorius, 2012, “Size Reduction of a Double-Ridged Horn Antenna for a Bistatic Radar-Based Breast Imaging System”, 15th International Symposium on Antenna Technology and Applied Electromagentics, ANTEM 2012, Toulouse, France, June 25-28.
592. Z. Allahgholi Pour and L. Shafai, 2012, “Displacement of Phase Centre Location of a Tri-mode Stacked Circular Microstrip Patch Antenna”, 15th International Symposium on Antenna Technology and Applied Electromagentics, ANTEM 2012, Toulouse, France, June 25-28.
591. Z. Allahgholi Pour and L. Shafai, 2012, “An Analytical Review of Cross Polarization Reduction in Offset Reflector Antennas”, 15th International Symposium on Antenna Technology and Applied Electromagentics, ANTEM 2012, Toulouse, France, June 25-28.
590. Z. Allahgholi Pour and L. Shafai, 2012, “Adaptive Aperture Antennas with Adjustable Phase Centre Locations”, 2012 IEEE International Workshop on Antenna Technology, IWAT, Tuscon, Arizona, March 5-7.
589. P. Mojabi, C. Gilmore, M. Ostadrahimi, A. Zakaria, I. Jeffrey, J. LoVetri, S. Pistorius, and L. Shafai, 2011, “Reduction of Modeling Error in Microwave Tomography: A Review”, 2011 IEEE International Symposium on Antennas and Propagation and USNC/URSI Radio Science Meeting, Spokane, WA, July 3-8.
588. P. Mojabi, J. LoVetri and L. Shafai, 2011, “A Multiple-Frequency Pre-Scaled Multiplicative Regularized Gauss-Newton Inversion”, 2011 IEEE International Symposium on Antennas and Propagation and USNC/URSI Radio Science Meeting, Spokane, WA, July 3-8.
587. V. Okhmatovski, J. Aronsson and L. Shafai, 2011, “Elimination of Inverse Problem Ill-Posedness in the Media Exhibiting Focusing Properties”, 2011 IEEE International Symposium on Antennas and Propagation and USNC/URSI Radio Science Meeting, Spokane, WA, July 3-8.
586. F. Safari and L. Shafai, 2011, “On the Feasibility of Reflectarray Antenna Performance Improvement Using a New Design Approach Based on the Feed Near-Field”, 2011 IEEE Int. Sym. on Antennas and Propagation and USNC/URSI Radio Science Meeting, Spokane, WA, July 3-8.
585. D. Isleifson, L. Shafai and D.G. Barber, 2011, “Numerical Scattering from 3D Randomly Rough Surfaces Using FVTD”, 2011 IEEE Int. Symposium on Antennas and Propagation and USNC/URSI Radio Science Meeting, Spokane, WA, July 3-8.
584. A. Mohamed and L. Shafai, 2011, “Dielectric Loading Effect on the Performance of a Vee Dipole Antenna with Trapezoidal Arms and Ultra Wideband Coaxial Balun”, 2011 IEEE Int. Sym. on Antennas and Prop. and USNC/URSI Radio Science Meeting, Spokane, WA, July 3-8.
583. S.I. Latif, M. Safari Hassan Abadi, C. Shafai and L. Shafai, 2011, “Development of an Adaptive Surface Controlled by MEMS-Bridges to Transmit or Reflect Electromagnetic Waves”, 2011 IEEE Int. Symposium on Antennas and Propagation and USNC/URSI Radio Science Meeting, Spokane, WA, July 3-8.
582. M.Q. Maula and L. Shafai, 2011, “Broadband Rare Radiating Printed Dipole Antenna”, 2011 IEEE Int. Symposium on Antennas and Propagation and USNC/URSI Radio Science Meeting, Spokane, WA, July 3-8.
581. A.M. Mehrabani, L. Shafai and M. Clénet, 2011, “Investigation of Higher Order Mode Radiation Performance of Four-Arm Spiral Antennas”, 2011 IEEE Int. Symposium on Antennas and Propagation and USNC/URSI Radio Science Meeting, Spokane, WA, July 3-8.
580. Z. Allahgholi Pour and L. Shafai, 2011, “Crosstalk Degradation Caused by Primary Feed Phase Errors in Offset Reflector Antennas”, 2011 IEEE Int. Symposium on Antennas and Propagation and USNC/URSI Radio Science Meeting, Spokane, WA, July 3-8.
579. M. Ostadrahimi, P. Mojabi, S. Noghanian, L. Shafai, S. Pistorius and J. LoVetri, 2011, “On the Feasibility of a Novel Microwave Tomography System Based on the Scattering Probe Technique”, 2011 IEEE Int. Sym. on Antennas and Propagation and USNC/URSI Radio Science Meeting, Spokane, WA, July 3-8.
578. Z. Allahgholi Pour, L. Shafai and A.M. Mehrabani, 2011 “Virtual Array Antenna with Displaced Phase Centers for GMTI Applications”, 2011 IEEE Radar Conference (RadarCon’11), Kansas City, MS, May 23-27.
577. D. Isleifson, L. Shafai, J. LoVetri, and D.G. Barber, 2011, “On the development of a scattered-field formulation for objects in layered media using the FVTD method”, The 27th Int. Review of Progress in App. Computational Electromagnetics (ACES), Williamsburg, VA, March 27-31.
576. A. Foroozesh and L. Shafai, 2010, “On the Design of High-Gain Resonant Cavity Antennas Using Different Highly-Reflective Frequency Selective Surfaces as the Superstrates”, IEEE International Symposium on Antennas and Propagation and CNC/USNC/URSI Radio Science Meeting, 2010 APS/URSI, Toronto, ON, July 11-17.
575. A. Foroozesh and L. Shafai, 2010, “Observation of Two Counter-Intuitive Behaviors in the Antennas Having EBG or HIS Structure as the Ground Plane”, IEEE International Symposium on Antennas and Propagation and CNC/USNC/URSI Radio Science Meeting, 2010 APS/URSI, Toronto, ON, July 11-17.
574. A.M. Mehrabani and L. Shafai, 2010, “Low Profile Offset-fed Single Arm Spiral Antenna over an AMC Ground Plane”, IEEE International Symposium on Antennas and Propagation and CNC/USNC/URSI Radio Science Meeting, 2010 APS/URSI, Toronto, ON, July 11-17.
573. Z. Allahgholi Pour and L. Shafai, 2010, "Effect of Primary Feed Polarization on Phase Centre Location of Parabolic Reflector Antennas", IEEE Int. Symposium on Antennas and Propagation and CNC/USNC/URSI Radio Science Meeting, 2010 APS/URSI, Toronto, ON, July 11-17.
572. S.I. Latif and L. Shafai, 2010, “Circular patch antenna with nearly-equal E- and H-plane co-polarization patterns”, IEEE International Symposium on Antennas and Propagation and CNC/USNC/URSI Radio Science Meeting, 2010 APS/URSI, Toronto, ON, July 11-17.
571. S.I. Latif, C. Shafai and L. Shafai, 2010, “Study of the microtrip patch or ring as a cell element for a transmit-array with slotted ground plane”, IEEE Int. Symp. on Antennas and Propagation and CNC/USNC/URSI Radio Science Meeting, 2010 APS/URSI, Toronto, ON, July 11-17.
570. M. Ostadrahimi, S. Noghanian, L. Shafai, G. Thomas and S. Pistorius, 2010, "A novel broadband design procedure for balanced compact planar tapered slot antenna", IEEE International Symposium on Antennas and Propagation and CNC/USNC/URSI Radio Science Meeting, 2010 APS/URSI, Toronto, ON, July 11-17.
569. A. Mohamed and L. Shafai, 2010, “Novel UWB Microstrip Antennas with Low Cross-Polarization Components", IEEE International Symposium on Antennas and Propagation and CNC/USNC/URSI Radio Science Meeting, 2010 APS/URSI, Toronto, ON, July 11-17.
568. D. Ileifson and L. Shafai, 2010, “Numerical Homogenization of Heterogeneous Media Using FVTD Simulations”, 14th Int. Symp. on Antenna Technology & Applied Electromagnetics and the American Electromagnetics Conference, ANTEM/AMEREM 2010, Ottawa, ON, July 5-8.
567. Z. Allahgholi Pour and L. Shafai, 2010, “A Novel Dual Mode Circular Waveguide Horn Antenna”, 14th International Symposium on Antenna Technology & Applied Electromagnetics and the American Electromagnetics Conference, ANTEM/AMEREM 2010, Ottawa, ON, July 5-8.
566. A. Foroozesh and L. Shafai, 2010, “Improvements in the Performance of Compact Microstrip Antennas Using AMC Ground Planes”, 14th International Symposium on Antenna Technology & Applied Electromagnetics and the American Electromagnetics Conference, ANTEM/AMEREM 2010, Ottawa, ON, July 5-8.
565. A. Foroozesh and L. Shafai, 2010, “Electromagnetic Scattering by Periodic Conducting Strip Gratings on Grounded Dielectric Slab: Study of the Angular and Polarization Dependence in Different Incident Planes”, 14th International Symposium on Antenna Technology & Applied Electromagnetics and the American Electromagnetics Conference, ANTEM/AMEREM 2010, Ottawa, ON, July 5-8.
564. A.M. Mehrabani and L. Shafai, 2010, “Effect of Extending Grounded Substrate beyond AMC on the Performance of Spiral Antennas”, 14th International Symposium on Antenna Technology & Applied Electromagnetics and the American Electromagnetics Conference, ANTEM/AMEREM 2010, Ottawa, ON, July 5-8.
563. M. Qudrat-E-Maula and L. Shafai, 2010, “E-plane Slotted Circular Waveguide Feed with a Single Choke”, 14th Int. Symposium on Antenna Technology & Applied Electromagnetics and the American Electromagnetics Conference, ANTEM/AMEREM 2010, Ottawa, ON, July 5-8.
562. M. Ostadrahimi, S. Noghanian, L. Shafai and A. Foroozesh, 2010, “Comparing Performance of Double Layer Stripline Fed and Single Layer Y2Y Fed Vivaldi Antennas”, 14th International Symposium on Antenna Technology & Applied Electromagnetics and the American Electromagnetics Conference, ANTEM/AMEREM 2010, Ottawa, ON, July 5-8.
561. F. Safari and L. Shafai, 2010, “Comparison of Two Different Simulation Methods for the Design of Reflect-Arrays”, 14th Int. Sym. on Antenna Technology & Applied Electromagnetics and the American Electromagnetics Conference, ANTEM/AMEREM 2010, Ottawa, ON, July 5-8.
560. T. Piché, C. Shafai and L. Shafai, 2010, “A MEMS-Tunable Frequency Selective Surface”, 14th International Symposium on Antenna Technology & Applied Electromagnetics and the American Electromagnetics Conference, ANTEM/AMEREM 2010, Ottawa, ON, July 5-8.
559. A. Mohamed and L. Shafai, 2010, “A Novel Orthogonal Linearly Polarized Directional Antenna for Ultra Wideband Applications”, 14th International Symposium on Antenna Technology & Applied Electromagnetics and the American Electromagnetics Conference, ANTEM/AMEREM 2010, Ottawa, ON, July 5-8.
558. A. Mohamed and L. Shafai, Invited, 2010, “Ultra Wideband Antennas with Efficient Band-Stop Functions”, 14th Int. Symposium on Antenna Technology & Applied Electromagnetics and the American Electromagnetics Conference, ANTEM/AMEREM 2010, Ottawa, ON, July 5-8.
557. S.I. Latif, C. Shafai and L. Shafai, 2010, “Reflect-Array Study with Shorted Slotted Ground Plane Using Microstrip Patches or Rings as Cell Elements”, 14th Int. Symposium on Antenna Technology & Applied Electromagnetics and the American Electromagnetics Conference, ANTEM/AMEREM 2010, Ottawa, ON, July 5-8.
556. S.I. Latif and L. Shafai, 2010, “Effects of Finite Ground Plane and Substrate Permittivity on E- and H-Plane Co-Polarization Patterns of the Circular Patch Antenna”, 14th International Symposium on Antenna Technology & Applied Electromagnetics and the American Electromagnetics Conference, ANTEM/AMEREM 2010, Ottawa, ON, July 5-8.
555. S.I. Latif and L. Shafai, 2010, “Relationships among multiple modes of open ring microstrip antennas”, Proc. International Conference on Aerospace Electronics, Communications and Instrumentation (ASECI-2010), Vijayawada, AP, India, January 6-7.