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Mortazawi Publications

Book and Book Chapters

J. Choi, A. Mortazawi, Book Chapter on “Microwave Oscillators,” Wiley Encyclopedia of Electrical and Electronics Engineering, New York: John Wiley, 2004

A. Mortazawi, Book Chapter, “Quasi-Optical Techniques,” Handbook of RF and Microwave Components, Chapter 7 on Wiley Interscience, 2003, co-authored with P. Gold-Smith, T. Itoh and K. Stephan

Active Antennas and Quasi-Optical Arrays,” IEEE, Press, 1998 Edited by: A. Mortazawi, T. Itoh and J. Harvey,”

A Mortazawi, L. Brokman and J. Hubert, "Multilayer and Distributed Arrays," Book Chapter, Active and Quasi-Optical Arrays for Solid-State Power Combing, Editor: R. A. York and Z. B. Popovic, John Wiley and Sons, Inc., 1997

A. Mortazawi, A chapter on “Microwave Oscillators,” Encyclopaedia of Electrical Engineering, John Wiley, Editor: John Webster, Univ. of Wisconsin, Madison

 

Refereed Journals

J. Choi and A. Mortazawi, “A New X-Band Low Phase-Noise Multiple-Device Oscillator Based on the Extended-Resonance Technique,” IEEE Transactions on Microwave Theory and Technique,Volume 55,  Aug. 2007 Pages:1642 – 1648

L. Schulwitz, S. Ortiz and A Mortazawi,Packaging Method for Increased Isolation Using a Microstrip to Waveguide Transition,” IEEE Microwave and Wireless Components Letters, Volume 17,  March 2007 Pages:163 – 165

J.-S. Fu, X. A. Zhu, J. D. Phillips and A. Mortazawi, “Improving Linearity of Ferroelectric-Based Microwave Tunable Circuits,” IEEE Transactions on Microwave Theory and Techniques, Volume 55, Part 2,  Feb. 2007 Pages: 354 – 360

L. Schulwitz and A. Mortazawi, “Millimeter-Wave Dual Polarized L-Shaped Horn Antenna for Wide-Angle Phased Arrays,” IEEE Transactions on Antennas and Propagation, Volume 54, Sept. 2006 Pages: 2663 - 2668

J. Choi and A. Mortazawi, “Design of Push-Push and Triple-Push Oscillators for Reducing 1/Noise Upconversion,” IEEE Transactions on Microwave Theory and Technique, Volume 53,  Issue 11,  Nov. 2005 Pages: 3407 - 3414

L. Schulwitz and A. Mortazawi, “A Compact Dual Polarized Multibeam Phased Array Architecture for Millimeter-Wave Radar,” IEEE Transactions on Microwave Theory and Technique, Volume 53,  Issue 11,  Nov. 2005 Pages: 3588 - 3594

M. Ozkar and A. Mortazawi, "Electromagnetic modeling and optimization of spatial power combiners/dividers with hard horns", IEEE Transactions on Antennas and Propagation, Volume: 53, Issue: 1, Jan 2005, Pages: 144 - 150

Jonghoon Choi, Amir Mortazawi, "Free-space power combining oscillator array for Solar power transmission," the Radio Science Bulletin, International Union of Radio Science, URSI, N0. 311, Dec 2004, Pages: 47-54

Z. Jin, S. Ortiz, and A. Mortazawi, "Design and Performance of a new digital phase shifter at X-band," IEEE Microwave and wireless components letters, Volume: 14, Issue: 9, Sept. 2004, Pages: 428 - 430

N. Gupta, A. Tombak, and A. Mortazawi, "A Predistortion Linearizer Using a Tunable Resonator," IEEE Microwave and Wireless Components Letters, Volume: 14, Issue: 9 , Sept. 2004, Pages: 431 - 433

A. Tombak and A. Mortazawi,“A Novel Low-Cost Beam-Steering Technique Based on the Extended-Resonance Power-Dividing Method,” IEEE Transactions on Microwave Theory and Techniques, Volume: 52, Issue: 2 , Feb. 2004, Pages: 664 - 670

X. Jiang, S. Ortiz and A. Mortazawi, “A Ka-Band Power Amplifier Based on the Traveling-Wave Power-Dividing/Combining Slotted-Waveguide Circuit” IEEE Transactions on Microwave Theory and Techniques, Volume: 52, Issue: 2, Feb. 2004, Pages: 633 - 639

X. Jiang; Martin, A. L.; Mortazawi, A.; “A class-B push-pull power amplifier based on an extended resonance technique”, IEEE Microwave and Wireless Components Letters, Volume: 13, Issue: 12, Dec. 2003, Pages: 550 - 552

M. Ozkar; G. Lazzi; A. Mortazawi; “A modified unsplit PML formulation for evanescent mode absorption in waveguides”, IEEE Microwave and Wireless Components Letters, Volume: 13, Issue: 6 , June 2003, Pages: 220 - 222

J. Xin; L. Li; S.C. Ortiz; R. Bashirullah; A. Mortazawi; “A Ka-band power amplifier based on a low-profile slotted-waveguide power-combining/dividing circuit”, IEEE Transactions on Microwave Theory and Techniques, Volume: 51 , Issue: 1, Jan. 2003, Pages: 144 - 147

Tombak, A.; Maria, J.-P.; Ayguavives, F.T.; Zhang Jin; Stauf, G.T.; Kingon, A.I.; Mortazawi, A., “Voltage-controlled RF filters employing thin-film barium-strontium-titanate tunable capacitors”, IEEE Transactions on Microwave Theory and Techniques, Volume: 51 , Issue: 2, Feb 2003, Pages: 462 - 467

Batty, W.; Christoffersen, C.E.; Yakovlev, A.B.; Whitaker, J.F.; Mortazawi, A.; Al-Zayed, A.; Ozkar, M.; Ortiz, S.C.; Reano, R.M.; Yang, K.; Katehi, L.P.B.; Snowden, C.M.; Steer, M.B.; “Global coupled EM-electrical-thermal simulation and experimental validation for a spatial power combining MMIC array”IEEE Transactions on Microwave Theory and Techniques, Volume: 50, Issue: 12, Dec. 2002, Pages: 2820 - 2833

A Tombak; J.-P Maria; F. Ayguavives; Jin Zhang; G.T. Stauf,; A.I. Kingon,; A. Mortazawi, “Tunable barium strontium titanate thin film capacitors for RF and microwave applications”, IEEE Microwave and Wireless Components Letters, Volume: 12 , Issue: 1 , Jan. 2002, Pages: 3 - 5

Sean Ortiz, John Hubert, Lee Mirth, Erich Schlecht and Amir Mortazawi, “A High Power ka-Band Quasi-Optical Amplifier Array,” IEEE Transactions on Microwave Theory and Techniques, Volume: 50 , Issue: 2 , Feb. 2002, Pages: 487-494

F. Ayguavives, Z. Jin, J. P. Maria, A. Tombak, A. Mortazawi, A. I. Kingon, G. T. Stauf, C. Ragaglie, J. F. Roeder and M. Brand, “Contribution of dielectric and metallic losses in RF / microwave tunable varactors using (Ba,Sr)TiO3 thin films”. Integrated Ferroelectrics, 39, pp. 1343-1352, 2001

G. T. Stauf, C. Ragaglie, J. F. Roeder, D. Vestyk, F. Ayguavives, J. P. Maria, A. Tombak, A. Mortazawi and A. I. Kingon., “Thick electrodes for high frequency high Q tunable ferroelectric thin film varactors”, Integrated Ferroelectrics, 39, pp. 1271-1280, 2001

A. Martin and A. Mortazawi, “A Ka Band Power Amplifier Based on an Extended Resonance Technique,” IEEE Microwave and Guided Wave Letters, pp. 475-477, Nov. 2000

A.B. Yakovlev, S. Ortiz, M. Ozkar, A. Mortazawi, and M.B. Steer, “A Waveguide Based Aperture-Coupled Patch Amplifier Full Wave System Analysis and Experimental Validation: Full-Wave System Analysis and Experiment,” IEEE Transactions on Microwave Theory and Techniques, Vol. MTT-48, pp. 2692-2699, Dec. 2000

A. Martin and A. Mortazawi, "A new Lumped Element Power Combining Amplifier based on an Extended Resonance Technique," IEEE Trans. Microwave Theory and Tech., vol. MTT-48, pp. 1505-1515, Sept. 2000

R. Bashirullah and Amir Mortazawi, “A slotted Waveguide Quasi-Optical Power Amplifier”, IEEE Trans. Microwave Theory and Techniques, vol. MTT-48, pp. 1142-1147, July 2000

M. Ozkar and A. Mortazawi,” Analysis and Design of an Inhomogeneous Waveguide Transformer With Hard Walls,” IEEE Microwave and Guided Wave Letters, February 2000

S. Ortiz, T. Ivanov and A. Mortazawi, "A CPW Fed Microstrip Patch Quasi-Optical Amplifier Array," IEEE Trans. Microwave Theory and Tech., vol. MTT-48. pp. 276-280, Feb. 2000

A. Martin and A. Mortazawi, "A Class E Power Amplifier based on an Extended Resonance Technique," IEEE Trans. Microwave Theory and Tech., vol. MTT-48, pp. 93-97, January 2000

A. Yakovlev, A. Khalil, C. Hicks, A. Mortazawi and M. Steer, "The Generalized Scattering Matrix of Closely Spaced Strip and Slot Layers in Waveguide," IEEE Trans. Microwave Theory and Tech., vol. MTT-48, pp. 126-137, January 2000

M. Ali, S. Ortiz, T. Ivanov. and A. Mortazawi, “Analysis and Measurement of Hard Horn Feeds for the Excitation of Quasi-Optical Amplifiers,” IEEE Trans. Microwave Theory and Tech., pp. 479-487, April 1999

Z. Popovic and Amir Mortazawi, “Quasi-Optical Transmit/Receive Front Ends,” IEEE Trans. Microwave Theory Tech., vol. MTT-46, pp. 1964-1975, Nov. 1998

A. Martin, A. Mortazawi and B.C. De Loach Jr. “An Eight Device Extended Resonance Power Amplifier,” IEEE Trans. Microwave Theory and Tech., vol. MTT-46, pp. 844-850, June 1998

T. Ivanov, S. Ortiz, A. Mortazawi, E. Schlecht and J. Hubert, “A Passive Double Layer Microstrip Array for Construction of mm-Wave Spatial Power Combining Amplifiers,” IEEE Microwave and Guided Wave Lett., pp. 365-367, Nov. 1997

M. Rahman, T. Ivanov and A. Mortazawi, “A Twenty-six MESFET Spatial Power Combining Oscillator,” IEEE Microwave and Guided Wave Lett., pp. 100-102, April 1997

T. Ivanov and A. Mortazawi, "A Two Stage Spatial Amplifier with Hard Horn Feeds," IEEE Microwave and Guided Wave Letters, pp. 88-90, Feb. 1996

A. Martin, A. Mortazawi and B.C. De Loach Jr. "A Power Amplifier Based on an Extended Resonance Technique," IEEE Microwave and Guided Wave Letters, vol. 5, no. 10, pp. 329-331, October 1995
T. Ivanov, A. Balasubramaniyan and A. Mortazawi, "One and Two Stage Spatial Amplifiers," IEEE Transactions on Microwave Theory Tech., vol. MTT-43, no. 9, pp. 2138-2143, Sep. 1995

Arul Balasubramaniyan, John Heinbuckel, A. Mortazawi and T. Itoh, "A Periodic Spatial Power Combining MESFET Oscillator," IEEE Trans. Microwave Theory Tech., vol. MTT-43, pp. 1196-1197, May 1995

Amir Mortazawi and B. C. De Loach Jr., "Spatial Power Combining Oscillators Based on an Extended Resonance Technique," IEEE Transactions on Microwave Theory Tech., vol. MTT. 42, pp. 2222-2228, December 1994

Arul Balasubramaniyan and Amir Mortazawi, "Two-Dimensional MESFET-Based Spatial Power Combiners," IEEE Microwave and Guided Wave Letters, Vol. 3, no. 10, pp. 366-368, Oct. 1993

A. Mortazawi and B. C. De Loach Jr., "A Two Dimensional Power Combining Array Employing an Extended Resonance Technique," IEEE Microwave and Guided Wave Letters, Vol. 3, no. 7, pp. 214-216, July 1993

A. Mortazawi and B. C. De Loach Jr., "Multiple Element Oscillators Utilizing a New Power Combining Technique," IEEE Trans. Microwave Theory Tech., vol. MTT. 40, pp. 2397-2402, December 1992

A. Mortazawi, H. Foltz and T. Itoh, "A Periodic Second Harmonic Spatial Power Combining Oscillator," IEEE Transactions on Microwave Theory Tech., vol. MTT-40, pp. 851-856, May 1992
B. Sauer, K. A. H. van Leeuwen, A. Mortazawi and P. M. Koch, "Precise Calibration of a Microwave Cavity with a Non-Ideal Waveguide System",  Rev. of Sci. Instrum. 62, pp. 189-197, Jan. 1991

A. Mortazawi and T. Itoh, "A Periodic Planar Gunn Diode Power Combining Oscillator," IEEE Trans. Microwave Theory Tech., vol. MTT-38, pp. 86-87Jan. 1990

V. P. Kesan, A. Mortazawi, D. R. Miller, V. K. Reddy, D. P. Neikirk and T. Itoh, "Microwave and Millimeter Wave QWITT Diode Oscillator," IEEE Transactions on Microwave Theory Tech., vol. MTT-37, pp. 1933-1941, Dec. 1989

V. P. Kesan, A. Mortazawi, D. R. Miller, T. Itoh, B. G. Streetman and D. P. Neikirk, "Microwave Frequency Operation of Quantum Well Injection Transit Time (QWITT) Diode," Electronics. Letters, Vol. 24, No. 24, pp. 1473-1474, Nov. 1988

V. P. Kesan, A. Mortazawi, D. P. Neikirk and T. Itoh, "Monolithic Millimeter-Wave Oscillator Using a Transmission Line Periodically Loaded by QWITT Diodes," Electronics Letters., Vol. 24, No. 11, pp. 666-667, May. 1988

L. Moorman, E. J. Galvez, B. E. Sauer, A. Mortazawi, K. A. H. Van Leevween, G. V. Oppen and P. M. Koch, "Two-Frequency Microwave Quenching of Highly Excited Hydrogen Atoms," Physical Review Letters, Vol 61, No 7, pp. 771-774, Aug. 1988

 

Conferences
 

X. Zhu, J. Phillips and A. Mortazawi, “A DC Voltage Dependant Switchable Thin Film Bulk Wave Acoustic Resonator Using Ferroelectric Thin Film,” IEEE/MTT-S International Microwave Symposium, 2007.

J. Choi,  M.-H. Chen, and A. Mortazawi, " An X-band Low Phase Noise Oscillator Employing a Four-pole Elliptic-Response Microstrip Bandpass Filter,” IEEE/MTT-S International Microwave Symposium, 2007, Page(s):1529 – 1532

L. Schulwitz and A. Mortazawi, “A Monopulse Rotman Lens Phased Array for Enhanced Angular Resolution,” IEEE/MTT-S International Microwave Symposium, 2007, Pages: 1871 - 1874


L. Schulwitz and A. Mortazawi, “Millimeter-wave dual polarized L-shaped horn antenna array, IEEE Antennas and Propagation Society International Symposium 2006, Pages: 3153 - 3156


J. Choi and A. Mortazawi, “A novel low phase noise multiple-device oscillator based on the extended resonance technique,” IEEE MTT-S International Microwave Symposium, 2006 Pages: 577 - 580

J. Fu, X. Zhu, D.Y. Chen, J. Philips and A. Mortazawi, “A Linearity Improvement Technique for Thin-film Barium Strontium Titanate Capacitors,” IEEE MTT-S International Microwave Symposium, 2006 Pages: 560 - 563

L. Schulwitz and A. Mortazawi, “A New Low Loss Rotman Lens Design for Multibeam Phased Arrays,” IEEE MTT-S International Microwave Symposium, 2006, Pages: 445 - 448

J. Choi and A. Mortazawi, “A novel low phase noise multiple-device oscillator based on the extended resonance technique,” IEEE MTT-S International Microwave Symposium, 2006 Pages: 577 - 580

J. Fu, X. Zhu, D.Y. Chen, J. Philips and A. Mortazawi, “A Linearity Improvement Technique for Thin-film Barium Strontium Titanate Capacitors,” IEEE MTT-S International Microwave Symposium, 2006 Pages: 560 - 563

L. Schulwitz and A. Mortazawi, “A New Low Loss Rotman Lens Design for Multibeam Phased Arrays,” IEEE MTT-S International Microwave Symposium, 2006, Page(s):445 - 448

A. Tombak and A. Mortazawi, “An X-band low-cost compact phased array based on the extended resonance power dividing technique", IEEE APS International Conference on Antennas and Propagation, Washington, DC, Volume 1A,  3-8 July 2005 Pages: 334 - 337 Vol. 1A

Xinen Zhu, Ding-Yuan Chen, Zhang Jin, Jamie D. Phillips and Amir Mortazawi, "Characterization of Thin Film BST Tunable Capacitors Using A Simple Two Port Measurement Technique," IEEE MTT-S International Microwave Symposium, June 2005 Pages: 611 - 614

L. Schulwitz and A. Mortazawi, "A Broadband Millimeter-Wave Dual Polarized Phased Array for Radar Front End Applications," IEEE MTT-S International Microwave Symposium, June 2005.

J. Choi and A. Mortazawi, “Design of Push-Push Oscillators for Reducing 1/f Noise Upconversion,” IEEE MTT-S International Microwave Symposium, June 2005 Page(s):1531 - 1534

X. Jiang and A. Mortazawi, "A Broadband Power Amplifier Design Based on the Extended Resonance Power Combining Technique," IEEE MTT-S International Microwave Symposium, 2005

N. Gupta, A. Tombak, A. Mortazawi, “A Varactor Diode Based Predistortion Circuit”, 2004 IEEE MTT-S International Microwave Symposium, vol. 2, pp. 689-692, Jun 2004.

Al-Zayed, L. Schulwitz, and A. Mortazawi, "A Dual Polarized Millimeter-Wave Multibeam Phased Array," IEEE MTT-S Int. Microwave Symp., Dig., vol. 1, June 2004, pp. 87-90.

Tombak, A.; Mortazawi, A., “Design of novel low-cost phased arrays based on the extended resonance technique,”IEEE Antennas and Propagation Society International Symposium, 2003, Volume: 4, 2003, Pages: 672 - 675

Zhang Jin; Mortazawi, A., “An L-band Tunable Microstrip Antenna Using Multiple Varactors,” IEEE Antennas and Propagation Society International Symposium, Volume: 4, 2003

Al-Zayed, A.; Ortiz, S.; Ozkar, M.; Mortazawi, A, “Numerical and experimental investigation of losses in a tray based spatial power amplifier, “IEEE MTT-S International Microwave Symposium Digest, 2003, Volume: 3, 8-13 June 2003
Pages: 1867 - 1870

Tombak, A.; Mortazawi, A.; “A Novel Phased Array Based on the Extended Resonance Power Dividing Technique” IEEE MTT-S International Microwave Symposium Digest, Volume: 3 ,8-13 June 2003, Pages: 1849 - 1852

Ozkar, M.; Mortazawi, A., “Electromagnetic modeling of a waveguide-based spatial power amplifier array with hard horn feeds,” Antennas and Propagation Society International Symposium, 2002. IEEE  ,Volume: 3 , 16-21 June 2002 Pages: 400

Batty, W.; Christoffersen, C.E.; Yakovlev, A.B.; Whitaker, J.F.; Ozkar, M.; Ortiz, S.; Mortazawi, A.; Reano, R.; Yang, K.; Katehi, L.P.B.; Snowden, C.M.; Steer, M.B.; “Global coupled EM-electrical-thermal simulation and experimental validation for a spatial power combining MMIC array,” IEEE MTT-S International Microwave Symposium Digest,Volume: 3 , 2-7 June 2002, Pages: 2177 - 2180

Ortiz, S.; Al-Zayed, A.; Mortazawi, A.; “A Ka-band perpendicularly-fed patch array for spatial power combining,” IEEE MTT-S International Microwave Symposium Digest, Volume: 3, 2-7 June 2002, Pages: 1519 - 1522

Al-Zayed, A.; Ortiz, S.; Mortazawi, A.; “Bandwidth improvement in a tile based spatial power amplifier” IEEE MTT-S International Microwave Symposium Digest, Volume: 2 ,2-7 June 2002, Pages: 1313 - 1316

M. Ozkar; A. Mortazawi,Optimization of the array parameters in waveguide-based spatial power combiners with hard horn feeds,” IEEE MTT-S International Microwave Symposium Digest, Volume: 2, 2-7 June 2002, Pages: 1301 - 1304

Zhang Jin; Tombak, A.; Maria, J.-P.; Boyette, B.; Stauf, G.T.; Kingon, A.I.; Mortazawi, A, “Microwave characterization of thin film BST material using a simple measurement technique,.; IEEE MTT-S International Microwave Symposium Digest, 2002  ,Volume: 2 ,2-7 June 2002, Pages:1201 - 1204

Gregory T. Stauf, Craig Ragaglia, Jeffrey F. Roeder, Jon-Paul Maria, Jin Zhang, Angus Kingon, Amir Mortazawi, Ali Tombak, Tito Ayguavives, Michael Brand, ”HIGH FREQUENCY APPLICATIONS OF LOW LOSS, TUNABLE BARIUM STRONTIUM TITANATE THIN FILMS,” Proceedings MRS Meeting, Spring 2002

Yakovlev, A.B.; Ortiz, S.; Ozkar, M.; Mortazawi, A.; Steer, M.B.; “Electric Green's dyadics for modeling resonance and surface wave effects in a waveguide-based aperture-coupled patch array”, IEEE Antennas and Propagation Society International Symposium, 2001. ,Volume: 3 , 8-13 July 2001 Pages:236 - 239

Zhang Jin; Ortiz, S.; Mortazawi, A.; “Design of a novel digital phase shifter at X-band,” IEEE MTT-S International Microwave Symposium Digest, Volume: 1 , 20-25 May 2001
Pages:233 - 236

Ortiz, S.; Ozkar, M.; Yakovlev, A.; Steer, M.; Mortazawi, A.;Fault tolerance analysis and measurement of a spatial power amplifier,” IEEE MTT-S International Microwave Symposium Digest, Volume: 3 ,20-25 May 2001, Pages: 1827 - 1830

Tombak, A.; Ayguavives, F.T.; Maria, J.-P.; Stauf, G.T.; Kingon, A.I.; Mortazawi, A.; “Tunable RF filters using thin film barium strontium titanate based capacitors,” IEEE MTT-S International Microwave Symposium Digest, Volume: 3, 20-25 May 2001, Pages: 1453 - 1456

Ozkar, M.; Lazzi, G.; Mortazawi, A.; “Study of design parameters in waveguide-based spatial power combining amplifier arrays using FDTD,” IEEE MTT-S International Microwave Symposium Digest, Volume: 2, 20-25 May 2001, Pages: 1403 - 1406

Xin Jiang; Ortiz, S.; Mortazawi, A.; “A novel Ka-band 1 to 8 power divider/combiner, ”IEEE MTT-S International Microwave Symposium Digest, Volume: 1, 20-25 May 2001 Pages:35 - 38

Ayguavives, T.; Tombak, A.; Maria, J.-P.; Stauf, G.T.; Ragaglia, C.; Roeder, J.; Mortazawi, A.; Kingon, A.I.; “Physical properties of (Ba,Sr)TiO3 thin films used for integrated capacitors in microwave applications,IEEE International Symposium on Applications of Ferroelectrics, 2000. ISAF 2000. Proceedings of the 2000 12th  ,Volume: 1 ,21 July-2 Aug. 2000 Pages: 365 - 368 vol. 1

A. Ortiz, J. Hubert, E. Schlecht, L. Mirth and A. Mortazawi, “A 25 Watt and a 50 Watt Ka-Band Quasi-Optical Amplifier,” IEEE MTTS International Microwave Symposium Digest, pp. 797-800, June 2000, Boston, MA

A. Tombak, J.P. Maria, A. Kingon and A. Mortazawi, ”Low Voltage Tunable Barium Strontium Titanate Thin Film Capacitors for RF and Microwave Applications,” IEEE International Microwave Symposium Digest, pp. 1345-1348, June 2000, Boston, MA
A. Martin and A. Mortazawi, “A 33 GHz Power Amplifier Based and an Extended Resonance Technique,” IEEE International Microwave Symposium Digest, pp. 999-1002, June 2000, Boston, MA

A.B. Yakovlev, S. Ortiz, M. Ozkar, A. Mortazawi, and M.B. Steer, “Electromagnetic Modeling and Experimental Verification of a Complete Waveguide-Based Aperture-Coupled Patch Amplifier Array,” IEEE MTT-S International Microwave Symposium Digest, pp. 801-804, Boston, MA, June 2000.

A.B. Yakovlev, S. Ortiz, M. Ozkar, A. Mortazawi, and M.B. Steer, “Electromagnetic Modeling of an Aperture-Coupled Patch Array in the N-Port Layered Waveguide for Spatial Power Combining Applications,” to be presented at the IEEE AP-S International Symposium and USNC/URSI National Radio Science Meeting Digest, pp. 518-521, Salt Lake City, UT, July 2000.

J. F. Roeder, C. Ragaglie, G. T. Stauf, F. Ayguavives, J.-P. Maria, A. I. Kingon, A. Tombak and A. Mortazawi, ”Physical properties of (Ba,Sr)TiO3 thin films used for integrated capacitors in microwave applications,” ISAF 2000 (Aachen, Germany, March 12-15, 2000).

M. Ozkar and A. Mortazawi, “Hard Horn Feeds for Quasi-Optical Amplifiers,” Invited, General Assembly of International Union of Radio Science, URSI, Dec. 1999 Toronto, Canada

S. Ortiz and A. Mortazawi, ”A Perpendicular Aperture-Fed Patch Antenna for Quasi-Optical Amplifier Arrays,” IEEE AP-S Antennas and Propagation International Symposium Digest, pp. 2386-2389, July 1999

M. Ozkar and A. Mortazawi, “An Inhomogeneous Waveguide Transformer with Hard Walls for the Excitation of Quasi-optical Amplifiers,” IEEE AP-S Antennas and Propagation International Symposium Digest, pp. 958-961, July 1999

A. Khalil, M. Ozkar, A. Mortazawi and M. Steer, “Modeling of Waveguide Based Spatial Power Combining Systems,” IEEE AP-S Antennas and Propagation International Symposium Digest, pp. 2374-2377, July 1999

S. Ortiz and A. Mortazawi, “A perpendicularly fed patch array for quasi-optical power combining,” IEEE MTT-S International Microwave Symposium Digest, pp. 667-670,  June 1999

J. Hubert, L. Mirth, S. Ortiz and A. Mortazawi, “A 4 Watt Ks-Band Quasi-Optical Amplifier,” IEEE MTTS International Microwave Symposium Digest, pp. 551-554, June 1999

R. Bashirullah and Amir Mortazawi, “A slotted Waveguide Quasi-Optical Power Amplifier,” IEEE MTT-S  International Microwave Symposium Digest, 671-674, June 1999

Maha Ali, Sean Ortiz, Tony Ivanov and Amir Mortazawi, “Hard Horn Feeds for the Excitation of Quasi-Optical Amplifier,” IEEE Antennas and Propagation International Symposium Digest, pp. 490-493, Jun 1998

Sean Ortiz and Amir Mortazawi, “A Compact Circularly Polarized Transmit-Receive Antenna for LAN applications”, IEEE Antennas and propagation International Symposium Digest, pp. 2104-2107, Jun 1998

S. Ortiz, T. Ivanov and A. Mortazawi, "A CPW fed Microstrip Patch Quasi-Optical Amplifier Array," IEEE International Microwave Symposium Digest, pp. 1465-1468, Jun 1998

M. Ali, S. Ortiz, T. Ivanov and A. Mortazawi, "Analysis and Measaurement of Hard Horn Antennas for the Excitation of Quasi-Optical Amplifiers," IEEE MTT-S International Microwave Symposium Digest, pp. 1469-1472, Jun 1998

S. Ortiz, T. Ivanov and A. Mortazawi, “A Transmit-Receive Spatial Amplifier Array,” IEEE MTT-S International Microwave Symposium Digest, pp. 679-682, Jun 1997

A. Mortazawi "An Extended Resonance Power Combining Amplifier," IEEE/MTT 4th Int. Workshop on Integrated Nonlinear Microwave and Millimeter-wave Circuits, Duisburg, Germany, Oct. 1996

M. Rahman, T. Ivanov and A. Mortazawi, "An Extended Resonance Spatial Power Combining Oscillator," IEEE MTT-S International Microwave Symposium Digest, pp. 1263-1266, June 1996

T. Ivanov and A. Mortazawi, "Hard Horn Feeds for Quasi-Optical Amplifiers," Twentieth International Conference on Infrared and Millimeter-Waves, Conf. Dig., pp. 149-150, Dec. 1995

T. Ivanov and A. Mortazawi, "Quasi-Optical Microstrip Amplifiers Based on Multilayer Coupled Structures," Proceedings of IEEE Int. Symposium on Signals, Systems and Electronics, pp. 99-102, Oct. 1995

A. Martin and A. Mortazawi, "A Four Device Power Amplifier Based on an Extended Resonance Technique," IEEE AP/URSI Conference Digest, Newport Beach, CA, June 1995

T. Ivanov and A. Mortazawi, "Two Stage Double Layer Microstrip Spatial Amplifiers," IEEE MTT-S International Microwave Symposium Digest., pp. 589-592, May 1995

N. Sheth, T. Ivanov, A. Balasubramaniyan and A. Mortazawi, "A Nine HEMT Spatial Amplifier," IEEE MTT-S International Microwave Symposium Digest, pp. 1239-1242, May 1994

A. Balasubramaniyan, T. Ivanov and A. Mortazawi, "MESFET Based Spatial Power Combiners," IEEE Southcon 94, pp. 288-290, March 1994

A. Balasubramaniyan, J. Heinbockel and A. Mortazawi, "An Eight MESFET Periodic Spatial Power Combiner," IEEE MTT-S International Microwave Symposium Digest, pp. 611-614, June 1993

A. Mortazawi and B.C. De Loach Jr., "A Two Dimensional Power Combining Array Employing An Extended Resonance Technique," 17th IR-MMW Conf. Digest, Dec. 1992 (Refereed, International)

A. Mortazawi and B.C. De Loach Jr., "Multiple Element Oscillators Utilizing a New Power Combining Technique," IEEE MTT-S International Microwave Symposium Digest pp. 1093-1096, June 1992

J. Heinbockel, A. Mortazawi and T. Itoh, "A Periodic Spatial Power Combining MESFET Oscillator," IEEE MTT-S International Microwave Symposium Digest., pp. 545-548, June 1992

S. Kawasaki, A. Mortazawi and T. Itoh, "Spatial Harmonic Power Combining Transceiver," Progress in Electromagnetic Research Symposium, Cambridge, MA, July 1-5, 1991

M. Schoenberger, A, Biswas, A. Mortazawi and V.K. Tripathi, "Coupled Slot-Strip Coupler in Finline," IEEE MTT-S International Microwave Symposium Digest., pp. 751-753, June, 1991

A. Mortazawi, H. Foltz and T. Itoh, "Analysis and Experimental Results on Multiple Gunn Diode Power Combining Oscillators," URSI, International Radio Science Meeting, Ontario, Canada, 24-28 June 1991

H.D. Foltz, A. Mortazawi, J.H. Davis and T. Itoh, Nonlinear Analysis of Quantum Devices," IEEE MTT/AP, First International Workshop on Integrated Nonlinear Microwave and Millimeter wave Circuits, pp. 95-107, Oct. 1990, Germany

A. Mortazawi, D. Miller, D.P. Neikirk and T. Itoh, "Small Signal Measurements of the Microwave Impedance of QWITT Diodes," 20th European Microwave Conference, Sep. 1990

A. Mortazawi, S. Kavasaki and T. Itoh, “A Periodic Second Harmonic Power Combining Transceiver,” 1990 Asia-Pacific Microwave Conference-APMC’90, September 1990, Tokyo, Japan
A. Mortazawi, and T. Itoh, "A Second Harmonic Spatial Power Combining Oscillator," IEEE MTT-S International Microwave Symposium Digest, pp. 1213-1216, May 1990

A. Mortazawi and T. Itoh, "An Experimental Method for Large Signal Characterization of Solid State Negative Resistance Devices," URSI, National Radio Science Meeting, Boulder, CO., 3-5 Jan. 1990

A. Mortazawi, V. P. Kesan, D. P. Neikirk and T. Itoh, "A Self Oscillating QWITT Diode Mixer," Proc. 19th European Microwave Conf., pp. 715-718, Sep. 1989

V. P. Kesan, A. Mortazawi, D. P. Neikirk and T. Itoh, "Dc and Microwave Characterization of the Quantum Well Injection Transit Time (QWITT) Diode," URSI, Proc. Int. Symp. on Signals, Systems and Electronics, pp. 195-198, Sep. 1989

V. P. Kesan, A. Mortazawi, D. P. Neikirk and T. Itoh, "Microwave and Millimeter Wave QWITT diode Oscillator," IEEE MTT-S International Microwave Symposium Digest, pp. 487-490, June 1989

A. Mortazawi, V. P. Kesan, D. P. Neikirk and T. Itoh, "Periodic Monolithic Millimeter Wave Quantum Well Oscillator," Proc. of the 13th Int. Conf. on Infrared and mm Waves, pp. 47-48. Dec. 1988

L. Moorman, K. A. H. Van Leevween, G. V. Oppen, B. E. Sauer, A. Mortazawi, F. J. Galvez and P. M. Koch, "Two-Frequency Microwave Quenching of Highly Excited H Atoms," Conference Digest, ICPEAC XV, Brighton, GB, 1987

 

Other Published Work

A. Mortazawi and B.C. De Loach Jr., "Spatial Power Combining Circuits Based on a Extended Resonance Method," Proceedings of the Workshop on Millimeter-Wave Power Generation and Beam Control, U.S. Army Missile Command, AL, September 1993


Invited Talks/Workshops

I have given many lectures at various RF and microwave industries including:
RF Microdevices, Raytheon, Harris Corporation, Lockheed Martin, Sony Erricsson, etc.

Invited Talk: Kyoto University, Japan, Low phase Noise injection Locked arrays for Solar Power Satellites, 2006

Invited Talk: University of Illinois, Urbana, Champaign, “Adaptive RF Circuits Based on Thin Film BST” September 2005

Invited Talk: DAPRA Workshop on 60 GHz Secure Communication Networks
Title: Technology Roadmap for 60 GHz Secure Networking

Invited Talk, Kyoto University, 2003 Japan-United States Joint Workshop on Space Solar Power System (JUSPS’03), J. Choi, A. Mortazawi and D. Pavlidis, “An approach for solar power conversion to high RF power for wireless transmission,” Workshop Proceeding

Invited Talk: IEEE MTTS 2003, Workshop on New Advances in Microwave and Millimeter-Wave Filters
Title: Ferroelectric based tunable RF filters

IEEE, University of Toronto Invited Talk on Millimeter-Wave Spatial Power Combining, 2002

Organizer of the workshop “Spatial and Quasi-Optical Power Combining Arrays,” IEEE MTT-S, June 2000

Workshop Presentation, “Spatial and Quasi-Optical Power Combining Arrays,” IEEE MTT-S, June 20
00

Workshop Presentation, “RF Applications of BST Material,” IEEE MTT-S, June 2000