Publications

Secondary Appointment: Adjunct Assistant Professor School of Electrical and Computer Engineering Georgia Institute of Technology Atlanta, GA 30332 Office Location: Microsoft Corporation One Microsoft Way Redmond, WA 98052 Office Phone: (425) 722-6400 Email: dejean@microsoft.com Home Current Projects Resume / CV Publications Select Presentations Pictures Community and Mentoring Activities / Awards

Scroll down for Books/Journals/Conferences/Articles Books 1. G. R. DeJean, Compact Broadband and Multiband Antenna Designs for Millimeter-Wave Applications, Saarbruecken, Germany, VDM Verlag Dr. Mueller e.K., 2008. Journal Papers 1. R. L. Li, G. DeJean, M. M. Tentzeris, and J. Laskar, “Development and analysis of a folded shorted-patch antenna with reduced size,” IEEE Transactions on Antennas and Propagation, Volume: 52, Issue: 2, pp. 555-562, February 2004. 2. R. L. Li, G. DeJean, M. M. Tentzeris, J. Papapolymerou, and J. Laskar, “FDTD analysis of patch antennas on high dielectric-constant substrates surrounded by a soft-and-hard surface,” IEEE Transactions on Magnetics, Volume: 40, Issue: 2, pp. 1444-1447, March 2004. 3. M. M. Tentzeris, J. Laskar, J. Papapolymerou, D. Thompson, S. Pinel, R. L. Li, J. H. Lee, G. DeJean, S. Sarkar, R. Pratap, R. Bairavasubramanian, and N. Papageorgiou, “RF SoP for multi-band RF and millimeter-wave systems,” Advanced Packaging Magazine, pp.15-16, April 2004. 4. M. M. Tentzeris, J. Laskar, J.  Papapolymerou, S. Pinel, V. Palazzari, R. L. Li, G. DeJean, N. Papageorgiou, D. Thompson, R. Bairavasubramanian, S. Sarkar, and J. H. Lee, “3-D-integrated RF and millimeter-wave functions and modules using liquid crystal polymer (LCP) system-on-package technology,” IEEE Transactions on Advanced Packaging, Volume: 27, Issue: 2, pp. 332-340, May 2004. 5. R. L. Li, G. DeJean, M. Maeng, K. Lim, S. Pinel, M. M. Tentzeris, and J. Laskar, “Design of compact stacked-patch antennas in LTCC multilayer packaging modules for wireless applications,” IEEE Transactions on Advanced Packaging, Volume: 27, Issue: 4, pp. 581-589, November 2004. 6. G. DeJean,  R. Bairavasubramanian,  D. Thompson,  G. E. Ponchak,  M. M. Tentzeris, and J. Papapolymerou, “Liquid crystal polymer (LCP): A new organic material for the development of multilayer dual frequency / dual polarization flexible antenna arrays,”  IEEE Antennas and Wireless Propagation Letters, Volume: 4, pp. 22-26, 2005. 7. J. -H. Lee, L. Marcaccioli, G. DeJean, C. Lugo, S. Pinel, J. Papapolymerou, J. Laskar, R. Sorrentino, and M. M. Tentzeris, “Advanced system-on-package (SOP) front-end passive solutions for RF and millimeter-wave wireless systems”, European Microwave Association Magazine, Volume: 1, No. 2, pp.130-139, June 2005. 8. J.-H. Lee, G. DeJean, S. Sarkar, S. Pinel, K. Lim, J. Papapolymerou, J. Laskar, and M. M. Tentzeris, “Highly integrated millimeter-wave passive components using 3-D LTCC system-on-package (SOP) technologies,” IEEE Transactions on Microwave Theory and Techniques, Volume: 53, Issue: 6, Part 2, pp. 2220-2229, June 2005. 9. R. L. Li, G. DeJean, J. Laskar, and M. M. Tentzeris, “Investigation of circularly polarized loop antennas with a parasitic element for bandwidth enhancement,” IEEE Transactions on Antennas and Propagation, Volume: 53, Issue: 12, pp. 3930-3939, December 2005. 10. J. -H. Lee, N. Kidera, G. DeJean, S. Pinel, J. Laskar, and M. M. Tentzeris, “A V-band front-end With 3-D integrated cavity filters/duplexers and antenna in LTCC technologies,” IEEE Transactions on Microwave Theory and Techniques, Volume: 54, Issue: 7 , pp. 2925-2936, July 2006. 11. G. R. DeJean and M. M. Tentzeris, “A new high-gain microstrip Yagi array antenna with a high front-to-back (F/B) ratio for WLAN and millimeter-wave applications,” IEEE Transactions on Antennas and Propagation, Volume: 55, Issue: 2, pp. 298-304, February 2007. 12. G. R. DeJean, T. T. Thai, S. Nikolaou, and M. M. Tentzeris, “Design and analysis of microstrip bi-Yagi and quad-Yagi antenna arrays for WLAN applications,” IEEE Antennas and Wireless Propagation Letters, Volume: 6, pp.244-248, 2007. 13. G. R. DeJean and M. M. Tentzeris, “The application of lumped element equivalent circuits approach to the design of single-port microstrip antennas and resonant structures,” IEEE Transactions on Antennas and Propagation, Volume: 55, Issue: 9, pp. 2468-2472, September 2007. 14. T. T. Thai, G. R. DeJean, and M. M. Tentzeris, “Design and development of a novel compact soft-surface structure for the front-to-back ratio improvement and size reduction of a microstrip Yagi array antenna,” IEEE Antennas and Wireless Propagation Letters, Volume: 7, pp.369-373, 2008. 15. V. Lakafosis, A. Traille, H. Lee, E. Gebara, M. M. Tentzeris, G. R. DeJean, D. Kirovski, “RF fingerprinting physical objects for anticounterfeiting applications,” IEEE Transactions on Microwave Theory and Techniques, Volume: 59, Issue: 2 , pp. 504-514, February 2011. Conference Papers 1. R. L. Li, G. DeJean, E. Tsai,  M. Tentzeris, J. Laskar, “Novel small  folded shorted-patch antennas,” Proc. of the 2002 IEEE Antennas and Propagation Society International Symposium, Volume: 4, pp. 26-29,  San Antonio, TX, June 2002. 2. E. Tentzeris, R. L. Li, K. Lim, M. Maeng, E. Tsai, G. DeJean, J. Laskar, “Design of compact stacked-patch antennas on LTCC technology for wireless communication applications,” Procs. of the 2002 IEEE Antennas and Propagation Society International Symposium, Volume: 2, pp. 500-503, San Antonio, TX, June 2002. 3. R. L. Li, G. DeJean, M. M. Tentzeris, J. Laskar, “Integration of miniaturized patch antennas with high dielectric constant multilayer packages and soft-and-hard surfaces (SHS),” Procs. of the 2003 IEEE Electronic Components and Technology Conference, pp. 474-477, New Orleans, LA, May 2003. 4. R. L. Li, G. DeJean, M. M. Tentzeris, J. Laskar, J. Papapolymerou, “LTCC multilayer based CP patch antenna surrounded by a soft-and-hard surface for GPS applications,” Procs. of the 2003 IEEE Antennas and Propagation Society International Symposium, Volume: 2, pp. 651-654, Columbus, OH, June 2003. 5. R. Li, G. DeJean, M. Tentzeris, J. Laskar, “Novel multiband broadband planar wire antennas for wireless communication handheld terminals,” Procs. of the 2003 IEEE-APS Symposium, Volume: 3, pp. 44-47, Columbus, OH, June 2003. 6. S. Pinel, K. Lim, G. DeJean, R. L. Li, C.-H. Lee, M. Maeng, M. F. Davis, M. Tentzeris, J. Laskar, “System-on-package (SOP) architectures for compact and low cost RF front-end modules,” Procs. of the 2003 IEEE European Microwave Symposium, Volume: 1, pp. 307-310, Munich, GERMANY, October 2003. 7. S. Pinel, K. Lim, G. DeJean, R. L. Li, C.-H. Lee, M. Maeng, M. F. Davis, M. Tentzeris, J. Laskar, “Advanced 3D integrated and low cost RF wireless systems using system-on-package (SOP) architectures,” Procs. of the 2003 IEEE Asian Pacific Microwave Conference, pp.WA5_01, Seoul, KOREA, November 2003. 8. J. Lee, K. Lim, S. Pinel, G. DeJean, R. L. Li, C.-H. Lee, M. F. Davis, M. Tentzeris and J. Laskar, “Advanced system-on-package (SOP) multilayer architectures for RF/Wireless systems up to millimeter-wave frequency bands,” Procs. of the 2003 IEEE Asian Pacific Microwave Conference, pp.FA5_01, Seoul, KOREA, November 2003. 9. R. L. Li, G. DeJean, M. M. Tentzeris, J. Laskar, V. F. Fusco, R. Cahill, “Unidirectional printed loop antenna,” Proc. of the 2003 IEEE International Symposium on Antennas, Propagation and EM Theory, pp. 104-107, November 2003. 10. G. DeJean, R. L. Li, M. M. Tentzeris and J. Laskar, “Miniaturized planar antennas on LTCC multilayer technology for WLAN and V-band applications,” Procs. of the 2004 URSI International Symposium on Electromagnetic Theory, Pisa, ITALY, May 2004. 11. V. Palazzari, D. Thompson, N. Papageorgiou, S. Pinel, J. H. Lee, S. Sarkar, R. Pratap, G. DeJean, R. Bairavasubramanian, R. L. Li, M. M. Tentzeris, J. Laskar, J. Papapolymerou, L. Roselli, “Multi-band RF and mm-wave design solutions for integrated RF functions in liquid crystal polymer system-on-package technology,” Procs. of the 2004 IEEE Electronic Components Technology Conference, Volume: 2, pp. 1658-1663, Las Vegas, NV, June 2004. 12. R. L. Li, G. DeJean, M. M. Tentzeris, J. Laskar, “Integrable miniaturized folded antennas for RFID applications,” Procs. of the 2004 IEEE Antennas and Propagation Society International Symposium, Volume: 2, pp. 1431-1434, Monterey, CA, June 2004. 13. G. DeJean, M. M. Tentzeris, “Modeling and optimization of circularly-polarized patch antennas using the lumped element equivalent circuit approach,” Procs. of the 2004 IEEE Antennas and Propagation Society International Symposium, Volume: 4, pp. 4432-4435, Monterey, CA, June 2004. 14. G. DeJean, R. L. Li, M. M. Tentzeris, J. Papapolymerou and J. Laskar, “Radiation-pattern improvement of patch antennas using a compact soft/hard surface (SHS) structure on LTCC multilayer technology,” Procs. of the 2004 IEEE Antennas and Propagation Society International Symposium, Volume: 1, pp. 317-320, Monterey, CA, June 2004. 15. D. Thompson, J. Lee, S. Pinel, K. Lim, G. DeJean, R. Li, M. Tentzeris and J. Laskar, “Advanced system-on-package (SOP) millimeter-wave architectures for RF/wireless systems up to millimeter-wave frequency bands,” 4th IASTED International Multi-Conference on Wireless and Optical Communications, July, 2004. 16. G. DeJean, N. Bushyager, E. Dalton, M. M. Tentzeris, J. Papapolymerou, “Design and optimization of silicon-based patch antennas using time domain techniques,” 2004 Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems, pp. 329-332, Atlanta, GA, September 2004. 17. J.-H. Lee, G. DeJean, S. Sarkar, S. Pinel, K. Lim, J. Papapolymerou, M. M. Tentzeris and J. Laskar, “Advanced 3-D LTCC system-on-package (SOP) architectures for highly integrated millimeter-wave wireless systems,” Procs. of the 2004 European Microwave Symposium, pp. 523-526, Amsterdam, THE NETHERLANDS, October 2004. 18. G. DeJean, R. L. Li, J. Laskar and M. M. Tentzeris, “Circularly polarized loop antennas with a parasitic element for bandwidth enhancement,” Procs. of the IEEE Antennas and Propagation Society International Symposium, Volume: 1B, pp. 401-404, July 2005. 19. R. Bairavasubramanian, D. Thompson, G. DeJean, G. E. Ponchak, M. M. Tentzeris and J. Papapolymerou, “Development of mm-wave dual-frequency multilayer antenna arrays on liquid crystal polymer (LCP) substrate,” Procs. of the IEEE Antennas and Propagation Society International Symposium, Volume: 1B, pp. 393-396, July 2005. 20. G. DeJean and M. M. Tentzeris, “A printed microstrip Yagi antenna array for millimeter-wave multi-sector applications,” Procs. of the 2005 IEEE Antennas and Propagation Society International Symposium, Volume: 2A, pp. 529-532, July 2005. 21. G DeJean, R. Bairavasubramanian, D. Thompson, G. E. Ponchak, S. Nikolaou, R. L. Li, S. Pinel, J. Laskar, M. M. Tentzeris and J. Papapolymerou, “Compact antenna architectures using system-on-package (SOP) technologies for wireless and millimeter-wave applications,” Procs. of the 2005 IEEE Mediterranean Microwave Symposium, Athens, GREECE, September 2005. 22. B. Pan, G. DeJean, J. Papapolymerou, M. M. Tentzeris, Y. Yoon and M. G. Allen, “High performance system-on-package integrated Yagi-Uda antennas for w-band applications and mm-wave ultra-wideband data links,” Procs. of the IEEE Electronic Components and Technology Conference, Volume: 2, pp. 1712-1717, June 2006. 23. D. Kirovski and G. DeJean, “Certifying Authenticity Using RF Waves,” Procs. of the IST Mobile and Wireless Communication Summit, Myconos, GREECE, June 2006. 24. G. R. DeJean, T. T. Thai and M. M. Tentzeris, “Design of microstrip bi-Yagi and Microstrip quad-Yagi antenna arrays for WLAN and millimeter-wave applications,” Procs. of the 2006 IEEE Antennas and Propagation Society International Symposium, pp. 989-992, July 2006. 25. G. DeJean and D. Kirovski, “Making RFIDs unique - radio frequency certificates of authenticity,” Procs. of the 2006 IEEE Antennas and Propagation Society International Symposium, pp. 1039-1042, July 2006. 26. G, DeJean, D. Staiculescu, L. Martin, U. Onyewuchi, R. L. Li, and M. M. Tentzeris, “Hybrid statistical/electromagnetic optimization and performance capability modeling of an LTCC compact soft/hard surface structure,” Procs. of the 2007 IEEE Antennas and Propagation Society International Symposium, pp. 5749-5752, July 2007. 27. G. DeJean and D. Kirovski, “RF-DNA: Radio-frequency certificates of authenticity,” Procs. of the 9th International Workshop on Cryptographic Hardware and Embedded Systems, pp. 346-363, Vienna, AUSTRIA, September 2007. 28. G. R. DeJean, “Quasi-endfire antenna array for beam steering applications,” Procs. of the 2008 ACES Conference, Niagara Falls, ON, CANADA, April 2008. 29. G. R. DeJean, “The use of a microsotrip Yagi array as a solution for beam steering applications,” Procs. of the 5th IASTED International Conference on Antennas, Radar, and Wave Propagation, pp. 42-46, Baltimore, MD, April 2008. 30. T. T. Thai, A. Haque, J. Ratner, G. R. DeJean and M. M. Tentzeris, “Development of a fully-integrated ultrasensitive wireless sensor utilizing carbon nanotubes and surface plasmon theory,” Procs. of the IEEE Electronic Components and Technology Conference, pp. 436-439, May 2008. 31. G. R. DeJean, “A new steerable Yagi antenna array for indoor applications,” Procs. of the 2008 IEEE Antennas and Propagation Society International Symposium, pp. 1-4, San Diego, CA, July 2008. 32. T. T. Thai, A. Haque, G. R. DeJean and M. M. Tentzeris, “A novel ultra sensitive gas detector system based on carbon nanotube mixtures and antenna radiation variation,” Procs. of the 2008 IEEE Antennas and Propagation Society International Symposium, pp. 1-4, San Diego, CA, July 2008. 33. G. R. DeJean, “Steerable antenna for wireless routers and indoor communications,” Procs. of the 2008 IEEE Asian Pacific Microwave Conference, pp.FA5_01, Hong Kong S.A.R., December 2008. 34. T. Thai, J. Ratner, W. Chen, T. Thrivikraman, G. DeJean, and M. Tentzeris, “Characterization and testing of novel polarized nanomaterial textiles for ultrasensitive wireless gas sensors,” Procs. of the IEEE Electronic Components and Technology Conference, pp. 1049-1052, May 2009. 35. T. T. Thai, G. R. DeJean, and M. M. Tentzeris, “Novel ultrasensitive millimeter-wave pressure transducer utilizing a Si membrane and a stacked-patch configuration,” Procs. of the 2009 IEEE Antennas and Propagation Society International Symposium, pp. 1-4, Charleston, SC, June 2009. 36. T. Thai, J. Ratner, W. Chen, T. Thrivikraman, G. DeJean, and M. Tentzeris, “First generation of ultrathin polarized nanomaterials for millimeter-wave (26–40 GHz) textile antenna applications,” Procs. of the 2009 IEEE Antennas and Propagation Society International Symposium, pp. 1-4, Charleston, SC, June 2009. 37. D. Kirovski and G. DeJean, “Identifying RF-DNA instances via phase differences,” Procs. of the 2009 IEEE Antennas and Propagation Society International Symposium, pp. 1-4, Charleston, SC, June 2009. 38. T. T. Thai, G. R. DeJean, and M. M. Tentzeris, “A novel front-end radio frequency pressure transducer based on a dual-band resonator for wireless sensing,” Procs. of the 2009 IEEE International Microwave Symposium, pp. 1701-1704, Boston, MA, June 2009. 39. G. DeJean and D. Kirovski, “Exploring RFCOAs and its application to products,” Procs. of the 2009 IEEE Asian Pacific Microwave Conference, pp.2252-2255, SINGAPORE, December 2009. 40. G. DeJean and D. Kirovski, “How radio frequency signals can assist in providing security to industrial logistics,” Procs. of the International Conference on Industrial Logistics "Logistics and Sustainability, pp.1-8, Rio de Janeiro, BRAZIL, March 2010. 41. T. T. Thai, A. Haque, J. Ratner, G. DeJean and M. M. Tentzeris, “Remote sensing structures based on surface plasmon resonances and carbon nanotubes,” Procs. of the 2010 European Conference on Antennas and Propagation, pp. 1-4, Barcelona, SPAIN, April 2010. 42. G. DeJean and D. Kirovski, “Can a physically secure RFID be produced: A review of RFDNA,” Procs. of the 2010 European Conference on Antennas and Propagation, pp. 1-4, Barcelona, SPAIN, April 2010. 43. T. T. Thai, J. M. Mehdi, H. Aubert, P. Pons, G. R. DeJean, M. M. Tentzeris, and R. Plana, “A novel passive wireless ultrasensitive RF temperature transducer for remote sensing,” Procs. of the 2010 IEEE International Microwave Symposium, pp. 473-476, Anaheim, CA, May 2010. 44. V. Lakafosis, A. Traille, H. Lee, G. Orecchini, E. Gebara, M. M. Tentzeris, J. Laskar, G. DeJean, D. Kirovski, “An RFID system with enhanced hardware-enabled authentication and anti-counterfeiting capabilities,” Procs. of the 2010 IEEE International Microwave Symposium, pp. 840-843, Anaheim, CA, May 2010. 45. G. R. DeJean and S. R. Mercer, “A simple bandwidth augmentation technique for wireless devices,” Procs. of the 2010 IEEE Antennas and Propagation Society International Symposium, pp. 1-4, Toronto, ON, CANADA, July 2010. 46. T. T. Thai, F. Chebila, J. M. Mehdi, P. Pons, H. Aubert, G. R. DeJean, M. M. Tentzeris, and R. Plana, “Design and development of a millimetre-wave novel passive ultrasensitive temperature transducer for remote sensing and identification,” Procs. of the European Microwave Symposium, pp. 45-48, Paris, FRANCE, September 2010. Articles 1. G. R. DeJean and S. Mercer, “Antenna environment impacts efficiency and radiation pattern,” High Frequency Electronics, pp. 18-27, August 2009.