Publications

 

 

Journal Papers

 

 

Fathy, K.M, Mansour, E.M. ; Nasr, N. ; Emad, M. ; Ali, M.A. ; and Hammad, H.F. "Adaptable Reconfigurable Antenna Array System with Multi-Angle and Tri-Polarization Diversity", Antennas and Propagation Magazine, IEEE, Volume:56 , Issue: 5, Oct. 2014, pages 223-237.

 

M. Kheir, H.F.Hammad, A. Omar, “Broadband Material Characterization Using Traveling-Wave Whispering-Gallery-Mode Dielectric Resonators”, Progress in Electromagnetic Research Journal Progress in Electromagnetic Research Journal B, Vol. 43, 35-42, 2012

 

M. Kheir, H.F. Hammad, A. Omar, “Graphical Representation and Evaluation of Attenuation and Coupling Parameters of Whispering-Gallery-Mode Resontors”, IEEE Transactions on Instrumentation and measurements, March 2011.

K. Zelonka, M. Sayer, H.F. Hammad, A.P. Freundorfer, and Y.M.M. Antar “Microwave Characterization of Hydrothermally Crystallized Barium Strontium Titanate Sol-Gel composite thin films using a coplanar waveguide technique”, Integrated Ferroelectrics, June 2007, Vol 9, No. 1, pp. 37-47.

S.F. Mahmoud, Y.M.M. Antar, H.F. Hammad, and A.P. Freundorfer, “Theoretical Considerations in the Optimization of Surface Waves on a Planar Structure”, IEEE Transactions on Antennas and Propagation, Aug. 2004, Vol 52, No. 8, pp. 2057-2063.

H.F. Hammad, Y.M.M. Antar, and A.P. Freundorfer, “A new dielectric grating antenna at millimeter wave frequencies”, IEEE Transactions on Antennas and Propagation, January 2004, Vol 52, No. 1, pp. 36-44.

H.F.Hammad, Y.M.M. Antar, A.P. Freundorfer, and S.F. Mahmoud, “Uni-planar CPW-fed slot launchers for efficient TM0 surface wave excitation”, IEEE Transactions on Microwave Theory and Techniques, April 2003, Vol. 51, No. 4, pp. 1234-1240.

H.F. Hammad, A.P. Freundorfer, and Y.M.M. Antar, “Comprehensive study of multi-band unconditional stabilization of common source and common gate MESFET transistors using feedback”, IEEE Journal of Solid State Circuits, Oct. 2002, Vol. 37, No. 10, pp.1260-1270.

H.F. Hammad, Y.M.M. Antar, A.P. Freundorfer, A. Petosa, and M. Sayer “A dielectric gratings antenna operating at Ka-band”, Antennas and Wireless Propagation Letters, 2002, Vol.1 No. 5, pp.106-108.

H.F. Hammad, A.P. Freundorfer, and Y.M.M. Antar, “Monolithic CPW-Based multi band-unconditionally stable common source and common gate MESFET amplifiers at Ka-band”, Microwave and Optical Technology Letters, July 2002.

H.F. Hammad, A.P. Freundorfer, and Y.M.M. Antar, “Feedback for multi-band stabilization of CS and CG MESFET Transistors”, Microwave and Wireless Components Letters, April 2002, Vol. 12, No. 4, pp. 122-124.

H.F. Hammad, Y.M.M. Antar, and A.P. Freundorfer, “A uni-planar slot antenna for TM slab mode excitation”, Electronic Letters, pp. 1500-1501, Dec. 2001.

H.F. Hammad, Y.M.M. Antar, and A.P. Freundorfer, "A new CPW antenna suitable for MMIC applications ", Microwave and Optical Technology Letters, pp 304-306, Dec. 1999.

H.F. Hammad, Y.M.M. Antar, and A.P. Freundorfer, "Dual band aperture coupled antenna using spur-line", Electronics Letters, vol. 33, no.25, pp. 2088-89, Dec. 1997.

 

Conference Papers

 

 

El Khosht, R.M., Hammad, H.F., Ashour, and M. E, Shabrway, T. O., "A New Indoor Empirical Model with Transmitter Location-Dependent Path Loss Coefficient", 2014 IEEE CAMA, International Conference on Antenna, Measurements & Applications, Antibes Juan Les Pins France, Pages 1-4.

 

Hammad, H.F., and Antar, Y. “ Microstrip Quad Mode Reconfigurable Power Divider”, European Microwave Week, Rome, Italy, October 2014, pages 223-226.

 

Zaghloul, Y. and Hammad, H, “Ultra-Wideband Compact Slot-Coupled 180° Hybrid Based on Ultra-Wideband Wilkinson Power Divider”, European Microwave Week, Rome, Italy, October 2014, pages 231-234.

 

Atawia, R., Ashour, M., El Shabrawy, T., and Hammad, H.F., “Indoor Distributed Antenna System Planning with Optimized Antenna Power Using Genetic Algorithm”, IEEE 78th Vehicular Technology Conference (VTC Fall), Las Vegas, NV, USA, 2-5 Sept. 2013, pages 1-6.

 

El-Molla, R.K., and Hammad, H.F., “Improved broadband circularly polarized cross dipole with multiple circular parasitic ring resonators”, IEEE 2013 Antennas and Propagation Society International Symposium (APSURSI),  July 2013, Orlando, Florida, USA, page 1104-1105

 

El-Khashab , E.O., Hammad, H.F., Ahour, M.E., and ElShabrawy, T.O. “Estimation of the complex permittivity of building materials using a conformal conductive-textile microstrip patch antenna”, IEEE 2013 Antennas and Propagation Society International Symposium (APSURSI),  July 2013, Orlando, Florida, USA, page 1158-1159

 

Ibrahim, S.A. ; Hammad, H.F., “Modified Phoenix cell for microstrip reflectarray antennas”,  IEEE 2013 Antennas and Propagation Society International Symposium (APSURSI),  July 2013, Orlando, Florida, USA, page 1562-1563

 

Atawia, R., Ashour, M., El Shabrawy, T., and Hammad, H.F., “Optimized transmitted antenna power indoor planning using distributed antenna systems”, 9th International  Wireless Communications and Mobile Computing Conference (IWCMC),July 2013 , Cagliari, Sardinia, Italy, pages 993-1000.

 

Atawia, R., Ashour, M., El Shabrawy, T., and Hammad, H.F., “'A Preprocessing Dependent Image Theory Based Ray Tracing Algorithm for Indoor Coverage Solution”, IEEE Wireless communications and networking conference, Istanbul, Turkey, April 2014

 

Ibrahim, S.A. and Hammad, H.F. “A Novel Microstrip Rotating Cell for Circularly Polarized Reflectarray Applications”, IEEE Radio and Wireless Symposium (RWS), Austin, TX, USA, 20-23 Jan. 2013, pages 121-123

 

E.L. Khashab, E.O. and Hammad, H.F. “A size-reduced wearable antenna for Zigbee Indoor Localization”, IEEE Radio and Wireless Symposium (RWS), Santa Clara, CA, USA, 15-18 Jan. 2012, pg. 95-98

 

Kheir, M.S., Hammad, H.F., and Omar, A. “A novel identification technique for material characterization using whispering-gallery-mode resonators”, IEEE Middle East Conference on Antennas and Propagation (MECAP), 20-22 October 2010, Cairo, Egypt, pg 1-4.

 

Shakeeb, M., Hammad, H., and Sebak, A. “Comprehensive study of single feeding techniques on circularly polarized microstrip antenna radiation pattern”, IEEE Middle East Conference on Antennas and Propagation (MECAP), 20-22 October 2010, Cairo, Egypt, pg 1-5.

 

El-Molla, R.K., Al-Askalani, R., Kheir, M.S.; Hammad, H.F., Abdel-Rahman, A.B., and Omar, A. “Broadband directional couplers using traveling-wave whispering-gallery-mode dielectric resonators”, IEEE Middle East Conference on Antennas and Propagation (MECAP), 20-22 October 2010, Cairo, Egypt, pg 1-4.

 

Al-Askalani, R., Hammad, H.F., and Leib, M. “Investigation on a small UWB antenna combining a monopole and a cone-shaped dielectric resonator”, IEEE Middle East Conference on Antennas and Propagation (MECAP), 20-22 October 2010, Cairo, Egypt, pg 1-4.

 

Kheir, M.S., Hammad, H.F., and Omar, A. “Evaluation of the loaded and unloaded q-factors of traveling-wave whispering-gallery-mode resonators”, IEEE Middle East Conference on Antennas and Propagation (MECAP), 20-22 October 2010, Cairo, Egypt, pg 1-4.

 

Al-askalani, R. Hammad, H.F. and Leib, M. “Investigation on an UWB antenna combining a caped-monopole and a dielectric resonator”, IEEE International Conference on Wireless Information Technology and Systems (ICWITS), 28 Aug – 3 Sept. 2010, Honolulu, Hawai'i, USA, pg 1-4.

 

Kheir, M.S., Anis, M., Saran, T., Hammad, H.F., and Omar, A. “Broadband characterization of planar whispering-gallery-mode dielectric resonators using a simple experimental setup”, IEEE 11th Annual Wireless and Microwave Technology Conference (WAMICON), 12-13 April 2010, pg 1-3.

 

Mohamed S. Kheir, Hany F. Hammad, and Abbas S. Omar, " Experimental investigation of whispering-gallery-mode dielectric resonators for biological material characterization", Conference on Precision Electromagnetic Measurements (CPEM), Daejeon, Korea, 13-18 June, 2010, pg 285-286

 

Mohamed S. Kheir, Hany F. Hammad, and Abbas S. Omar, "Measurement of the Dielectric Constant of Liquids Using a Hybrid Cavity-ring Resonator", Progress In Electromagnetics Research Symposium, PIERS 2008 in Cambridge, USA, 2-6 July, 2008, pg 566-569

H.F. Hammad, K. Zelonka, A.P. Freundorfer, Y.M.M. Antar, and M. Sayer, “A new technique for evaluating the permittivity of low loss thin film dielectric materials at mm-wave frequencies”, The 22nd National Radio Science Conference, NRSC’ May 2005, Cairo, Egypt, D5(1-8)

H.F. Hammad, A.P. Freundorfer, and Y.M.M. Antar, “Multi-band Stabilization of CS and CG MESFETs using Series and Shunt Networks”, The 22nd National Radio Science Conference, NRSC’ May 2005, Cairo, Egypt, D6(1-9).

S.F. Mahmoud, Y.M.M. Antar, H.F. Hammad, , and A.P. Freundorfer, “Optimum excitation of surface waves on planar structures”, IEEE Antenna and Propagation Symposium, June 2003, Vol.2, pp.22-27.

H.F. Hammad, Y.M.M. Antar, and A.P. Freundorfer, “Analysis and design of a novel dielectric grating antenna at millimeter wave frequency”, Radio Science Conference, 2003. NRSC 2003. Proceedings of the Twentieth National , 18-20 March 2003, pp. B1_1-B1_9.

H.F. Hammad, K. Zelonka, A.P. Freundorfer, Y.M.M. Antar, and M. Sayer, "A new technique for determining the permittivity of dielectric materials at mm-wave frequencies", Queen’s 21st Biennial Symposium on Communications, May 2002, Kingston, Ontario, pp. 327-330.

H.F. Hammad, A.P. Freundorfer, Y. M.M. Antar, and A. Petosa, "Waveguide to grounded slab transitions for leaky wave antennas applications", Queen’s 21st Biennial Symposium on Communications, May 2002, Kingston, Ontario, pp. 336-339.

H.F. Hammad, S.F. Mahmoud, Y.M.M. Antar, and A.P. Freundorfer, “Optimization of surface waves on a grounded dielectric slab by a slot antenna”, IEEE Antenna and Propagation Symposium, June 2002, Vol. 3, pp. 602.

H.F. Hammad, A.P. Freundorfer, and Y. M.M. Antar, "Unconditional stabilization of CS and CG MESFET transistors", GAAS/EUMC, The 9th European Gallium Arsenide & Other Semiconductors Application Symposium and The European Microwave Conference, London, UK, pp. 295-297, Sept. 2001.

H.F. Hammad, A.P. Freundorfer, and Y. M.M. Antar, "CPW slot antenna for TM slab mode excitation", IEEE Antenna and Propagation and URSI International Symposium, Boston, MA, pp. 240-243, July 2001.

H.F. Hammad, A.P. Freundorfer, M. Sayer, and Y. M.M. Antar, "A 30 GHz CPW fed dielectric-grating antenna", URSI International Symposium on Electromagnetic theory, Victoria, BC, May 2001, pp. 338-340, (Invited Paper)

K. Zelonka, M. Sayer, H.F. Hammad and A.P. Freundorfer, "Hydrothermal Fabrication of Barium Strontium Titanate Ceramics for High-Frequency Wireless Communication Networks", Proc. Mater. Res. Soc. 2001 655 CC12.13.1-5

H. F. Hammad, A.P. Freundorfer, and Y.M.M. Antar, "Planar folded slot lens for slab-beam power combining", ANTEM'2000, Winnipeg, Canada, July. 2000, pp. 99-102.

A.P. Freundorfer, Y. Antar, M. Sayer, B. Frank, H. Hammad, K.Zelonka, Lichun Zou, P. Shearing and M. Keller, "Progress in an Integrated Millimeter Wave Radio Project ", ANTEM'2000, Winnipeg, Canada, July. 2000, pp. 209-212.

H.F. Hammad, A.P. Freundorfer, and Y.M.M. Antar, "CPW antennas for slab-beam quasi-optical power combining arrays", IEEE Canadian Conference on Electrical and Computer Engineering, Halifax, Nova Scotia, May 2000.

H.F. Hammad, A.P. Freundorfer, and Y.M.M. Antar, "CPW based 2D lens array for slab-beam power combining array", IEEE Antenna and Propagation Symposium, Salt-Lake City, Utah, pp. 798-801, July 2000.

H.F. Hammad, Y.M.M. Antar, and A.P. Freundorfer, "Wide band antenna suitable for MMIC applications", Progress in Electromagentics Research Symposium (PIERS), Nantes, France, pp. 70, July 1998.

H.F. Hammad, Y.M.M. Antar, and A.P. Freundorfer, "New dual-band single-fed printed antennas", IEEE Antenna and Propagation and URSI International Symposium, Montreal, Canada, pp. 284 July 1997.

B.M. Frank, M.J. Keller, H.F. Hammad, P.R. Shearing, A.P. Freundorfer, and Y.M.M. Antar, "An integrated receiver for wireless applications", ANTEM’1998, pp. 95-97, Aug. 98, and also in June 1998 Queen's Biennial Symposium

K. Zelonka, M. Sayer, H.F. Hammad, and A.P. Freundorfer “Hydrothermal Fabrication of Barium Strontium Titanate Ceramics for High-Frequency Wireless Communication Networks”, Materials Research Society, Ferroelectric Thin Films IX, Boston, MA, Nov. 2000.