A.P. Freundorfer: Recent Publications

New Recent Publications

  1. K.W. Hamed, A.P. Freundorfer and Y.M.M. Antar, "A Monolithic Double Balanced Direct Conversion Mixer With an Integrated Wideband Passive Balun," IEEE Journal of Solid-State Circuits, Volume 40, Issue 3, Mar 2005 Page(s):622 - 629.
  2. 2.S.F. Mahmoud, Y.M.M. Antar, H.F. Hammad, A.P. Freundorfer, "Theoretical considerations in the optimization of surface waves on a planar structure," IEEE Transaction on Antennas and Propagation, Vol. 52 , No. 8 , Aug. 2004, pp. 2057 - 2063.
  3. Yi Sun and A. P. Freundorfer, "A new overlay coupler for direct digital modulator in GaAs HBT," IEEE Transactions on Microwave Theory and Techniques,Vol. 52, No. 8 , Aug. 2004, pp. 1830 - 1835.
  4. Yi Sun and A.P. Freundorfer, "Broadband folded Wilkinson power combiner/splitter," IEEE Microwave and Wireless Components Letters, Vol. 14, No. 6 , June 2004, pp. 295 - 297.
  5. H.F. Hammad, Y.M.M. Antar, A.P. Freundorfer, M. Sayer, "A new dielectric grating antenna at millimeter wave frequency," IEEE Transactions on Antennas and Propagation,Vol. 52, No. 1, Jan. 2004, pp. 36 - 44.
  6. X. Tian, A.P. Freundorfer, L. Roy, "Noise analysis of a photoreceiver using a P-I-N and GaAs HBT distributed amplifier combination," IEEE Microwave and Wireless Components Letters, Volume: 13 Issue: 6 , June 2003, pp. 208 -210
  7. 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", Microwave Theory and Techniques, IEEE Transactions on , Volume: 51 Issue: 4 , April 2003, Page(s): 1234 -1240.
  8. B.M. Frank, A.P. Freundorfer and Y.M.M. Antar, "Performance of 1-10 GHz Traveling Wave Amplifiers in 0.18 um CMOS," IEEE Microwave and Wireless Components Letters, Vol. 12, No. 9 , 2002, pp 327 -329.
  9. B.M. Frank, A.P. Freundorfer and Y.M.M. Antar, "A Novel Common Gate Mixer for Wireless Applications," IEEE Trans. on Microwave Theory and Techniques, Vol. 50, No. 5, May 2002, pp 1433-1435.
  10. 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, Vol. 37, No. 10 , Oct. 2002, pp 1260 -1270.
  11. 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, Vol. 1 . No. 5 , 2002, pp 106 -108.
  12. 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.
  13. 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, pp. 122-124, April 2002.
  14. H.F. Hammad, Y.M.M. Antar and A.P. Freundorfer, "A Uni-Planar Slot Antenna for TM Slab Mode Excitation," Electronics Letters, Vol. 37, No. 25, December 6th 2001, pg. 1500.
  15. A. P. Freundorfer, D. H. Choi and Y. Jamani, "Adaptive Transversal Preamplifier for High Speed Lightwave Systems," IEEE Microwave and Wireless Components Letters, Vol. 11, No. 7, July 2001, pp. 293-295.

For more information please visit http://the-rat.ee.queensu.ca/freund/research/vcircuits.html

Papers in Refereed Conference Proceedings

  1. Yi Sun, A.P. Freundorfer and D. Sawatzky, "A QPSK DIRECT DIGITAL MODULATOR IN GaAs HBT at 28 GHz," Conference on Electrical and Computer Engineering, CCECE 2005, May 1-4, 2005, Saskatoon, Saskatchewan Canada, paper 1568953255.
  2. A.P. Freundorfer, D. H. Choi, J. Lee and Y. Jamani, "Electronic Dispersion Compensation ICs for High Speed Long Haul Lightwave Systems," Conference on Electrical and Computer Engineering, CCECE 2005, May 1-4, 2005, Saskatoon, Saskatchewan Canada, paper 1568953251.
  3. M.Z.I. Bekheit, A.P. Freundorfer and Y.M.M. Antar, "A New Uni-Planar Compact CPW Feed Surfacewave Launcher for Leaky Wave Antenna Applications," International Union of Radio Science (URSI), URSI 2005, NATIONAL RADIO SCIENCE MEETING January 5-8, 2005 University of Colorado at Boulder, paper 8298.0.bekheit2904.
  4. K.W. Hamed, A.P. Freundorfer, Y.M.M. Antar, "A Novel 20 to 40 GHz Monolithic Passive Differential Coupler for MMICs Applications ," 2005 IEEE MTT-S International Microwave Symposium Digest, Long Beach, USA, June 12-17, paper WE4E-3.
  5. M.Z.I Bekheit, A.P. Freundorfer, Y.M.M. Antar, "A New Compact Uni-Planar CPW Fed Surface Wave Launcher for Leaky-wave Antenna Applications," Union of Radio Science (URSI) Meeting, January 5-8, 2005, Accepted, Session B9-1420.
  6. A.P. Freundorfer, Qiang Shi, and Y.M.M. Antar , "STABILITY CONSIDERATIONS OF AN ACTIVE INTEGRATED DIELECTRIC GRATING ANTENNA," Symposium on Antenna Technology and Applied Electromagnetics, ANTEM'2004, Ottawa, Ontario, Canada, July 2004, pp. 109-112.
  7. Qiang Shi, A.P. Freundorfer, and Y.M.M. Antar , "NOVEL MEASUREMENT TECHNIQUE FOR MILLIMETER WAVE SURFACE WAVE LAUNCHERS," Symposium on Antenna Technology and Applied Electromagnetics, ANTEM'2004, Ottawa, Ontario, Canada, July 2004, pp. 447-450.
  8. T. Chow and A.P. Freundorfer, "A SiGe 10 Gb/s Direct Digital 30 GHz Amplitude Modulator," Queen's 22nd Biennial Symposium on Communications, May 2004, Kingston Ontario, pp.415-417.
  9. K.W. Hamed, A.P. Freundorfer, Y.M.M. Antar, "A Novel 20 to 40 GHz HBT Double Balanced Direct Conversion Mixer," European Microwave Week 2003 Conference, 2003, Oct. 2003, Paper GAAS14-4. Best paper in Conference.
  10. S.F. Mahmoud, Y.M.M. Antar, H.F. Harnmad, A.P. Freundorfer, "Optimum excitation of surface waves on planar structures," Anetnnas and Propagation, 2003 IEEE Society International Conference on , Volume: 2 , June 22-27, 2003, pp. 88 -91
  11. H.F. Hammad, Y.M.M. Antar, 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 , March 18-20, 2003, pp. B1_1 -B1_9
  12. K.W. Hamed, A.P. Freundorfer, Y.M.M. Antar, "A novel 15 to 45 GHz monolithic passive balun for MMICs applications," Microwave Symposium Digest, 2003 IEEE MTT-S International , Volume: 1 , 8-13 June 2003, pp. 31 -34 vol.1
  13. B.M. Frank, A.P. Freundorfer, Y.M.M.Antar, "20 GHz feedback amplifier design in standard 0.18 um CMOS," Silicon Monolithic Integrated Circuits in RF Systems, 2003. Digest of Papers. 2003 Topical Meeting on , 9-11 April 2003, pp. 88 -91.
  14. Y. Sun and A.P. Freundorfer, "Broadband CPW Quadrature Overlay Coupler", Symposium on Antenna Technology and Applied Electromagnetics, ANTEM'2002, St. Hubert, Quebec, Canada, Aug. 2002, pp. 417-420.
  15. Y. Sun and A.P. Freundorfer, " Millimeter wave Monolithic Balanced BPSK Modulator using Overlay Coupler ", Symposium on Antenna Technology and Applied Electromagnetics, ANTEM'2002, St. Hubert, Quebec, Canada, Aug. 2002, pp. 433-436.
  16. B.M. Frank, A.P. Freundorfer and Y.M.M. Antar, "X and K-Band 0.18 um CMOS Amplifiers," Symposium on Antenna Technology and Applied Electromagnetics, ANTEM'2002, St. Hubert, Quebec, Canada, Aug. 2002, pp. 433-436.
  17. Y. Sun and A.P. Freundorfer, "Millimeter wave Monolithic GaAs HBT QPSK Modulator using Overlay Structure Coupler", Queen's 21st Biennial Symposium on Communications, May 2002, Kingston Ontario, pp. 264-268.
  18. B.M. Frank, A.P. Freundorfer, and Y. M.M. Antar, "CMOS Amplifiers For Microwave Communications", Queen's 21st Biennial Symposium on Communications, May 2002, Kingston Ontario, pp. 273-276.
  19. 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 .
  20. 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.
  21. 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 Antennas and Propagation Society International Symposium, 2002, Vol. 3, pp. 602 -605. (Invited Paper).
  22. S. Amari, K. Hamed, Y.M. Antar and A.P. Freundorfer, "New Elliptic Microstrip l/4-resonator Filters," Asian Pacific Microwave Conference, APMC 2001, Tiapai, Taiwan, Dec. 3-6 2001, Vol. 2, pp. 755 -758.
  23. K. Zelonka, M. Sayer, H. Hammad and A.P. Freundorfer (2001),"Hydrothermal Fabrication of Barium Strontium Titanate Ceramics for High-Frequency Wireless Communication Networks", Proc. Mater. Res. Soc. 2001 655 CC12.13.1-5
  24. 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 Semiconductor Application Symposium and the European Microwave Conference, London, UK, Sept. 2001.
  25. H. F. Hammad, Y.M.M. Antar, and A.P. Freundorfer, "CPW slot Antenna for TM Slab Mode Excitation," IEEE Antennas and Prop. Soc. Int. Symp./ 2001 North American Radio Sci. Meeting, 2001 IEEE APS Int. Symp/ URSI meeting, July,2001, Boston, USA.
  26. 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, May 2001, Victoria BC, pp. 338-340 (Invited Papaer).