Andreas Weisshaar

Professor
Electrical & Computer Engineering
Biography: 

Andreas Weisshaar received the Diplom-Ingenieur (Dipl.-Ing.) degree in electrical engineering from the University of Stuttgart, Stuttgart, Germany in 1987, and the M.S. and Ph.D. Degrees in electrical and computer engineering from Oregon State University, Corvallis in 1986 and 1991, respectively.

In 1991, he joined the Department of Electrical and Computer Engineering (now School of Electrical Engineering and Computer Science) at Oregon State University, where he is a Full Professor. His current research areas include CAD of passive RF and microwave circuits and components, embedded passives, interconnects and electronic packaging, and signal integrity. He has authored or co-authored more than 100 technical papers, co-authored Transmission Lines and Wave Propagation, 4th Edition (Boca Raton, FL: CRC Press, 2001), and authored the chapter “Transmission Lines” in Handbook of Engineering Electromagnetics, edited by R. Bansal (Marcel Dekker, NY, 2004). He holds one U.S. patent.

Weisshaar was a Guest Editor of the Symposium Issue of the IEEE Transactions on Microwave Theory and Techniques (December 2002). He is currently an Associate Editor of the IEEE Microwave and Wireless Components Letters and the IEEE Transactions on Advanced Packaging. He serves on the Editorial Board of the IEEE Transactions of Microwave Theory and Techniques and is a member of the Technical Program Committees of several international conferences including the IEEE MTT-S International Microwave Symposium and the IEEE Topical Meeting on Electrical Performance of Electronic Packaging.

Weisshaar is an IEEE Fellow.

Research Interests: 

Microwaves, Electronic Packaging, Wireless Communications, Fiber Optics

2013
Gaskill, S., A. Papou, A. Mohan, W. French, and A. Weisshaar, "Nonlinear Frequency-Dependent Model for Microinductors With Magnetic Core", IEEE Electron Device Letters, vol. 34, issue 2, pp. 304 - 306, 02/2013. Abstract
2012
Shilimkar, V. S., S. G. Gaskill, and A. Weisshaar, "Efficient modeling of metal fill parasitic capacitance in on-chip transmission lines", IEEE/MTT-S International Microwave Symposium - MTT 2012, Montreal, QC, Canada, IEEE, pp. 1 - 3, 06/2012. Abstract
2011
Shilimkar, V. S., S. G. Gaskill, and A. Weisshaar, "Closed-form expressions for modeling metal fill effects in interconnects", 2011 IEEE 15th Workshop on Signal Propagation on Interconnects (SPI), Naples, Italy, IEEE, pp. 97 - 100, 05/2011. Abstract
2010
Gaskill, S. G., V. S. Shilimkar, and A. Weisshaar, "Wide-range closed-form eddy-current loss formula for metal fill", 2010 IEEE 19th Conference on Electrical Performance of Electronic Packaging and Systems (EPEPS), Austin, TX, IEEE, pp. 129 - 132, 10/2010. Abstract
2009
Shilimkar, V. S., S. G. Gaskill, and A. Weisshaar, "Impact of Metal Fill on On-chip Interconnect Performance", Proc. IEEE 18th Topical Meeting on Electrical Performance of Electronic Packaging and Systems (EPEPS'2009), pp. 101-104, 10/2009.
Gaskill, S. G., V. S. Shilimkar, and A. Weisshaar, "Accurate closed-form capacitance extraction formulas for metal fill in RFICs", 2009 IEEE Radio Frequency Integrated Circuits Symposium (RFIC), Boston, MA, IEEE, pp. 611 - 614, 06/2009. Abstract
Paul, D., M. S. Nakhla, R. Achar, and A. Weisshaar, "Broadband Modeling of High-Frequency Microwave Devices", IEEE Transactions on Microwave Theory and Techniques, vol. 57, issue 2, pp. 361 - 373, 02/2009. Abstract
2008
Gaskill, S. G., V. S. Shilimkar, and A. Weisshaar, "Isolation enhancement in integrated circuits using dummy metal fill", 2008 IEEE Radio Frequency Integrated Circuits Symposium (RFIC), Atlanta, GA, IEEE, pp. 483 - 486, 06/2008. Abstract
Walkey, C., D. Paul, M. S. Nakhla, R. Achar, and A. Weisshaar, "A novel passivity verification and enforcement algorithm for macromodels of microwave devices", IEEE MTT-S International Microwave Symposium Digest - MTT 2008, Atlanta, GA, IEEE, pp. 611 - 614, 06/2008. Abstract
Gaskill, S. G., V. S. Shilimkar, and A. Weisshaar, "Noise Suppression in VLSI Circuits Using Dummy Metal Fill", 2008 IEEE Workshop on Signal Propagation on Interconnects (SPI), Avignon, France, IEEE, pp. 1 - 4, 05/2008. Abstract
2007
Orhanovic, I., R. J. Crinon, F. W. R. Chaplen, and A. Weisshaar, "Signal Transduction Pathway Modeling Using Sequences of Chromatophore Images", IEEE Transactions on Nanobioscience, vol. 6, issue 3, pp. 210 - 218, 09/2007. Abstract
2006
Paul, D., M. S. Nakhla, R. Achar, and A. Weisshaar, "A Passive Algorithm for Modeling Frequency-Dependent Parameters of Coupled Interconnects", 2006 IEEE Electrical Performane of Electronic Packaging, Scottsdale, AZ, IEEE, pp. 185 - 188, 10/2006. Abstract
Paul, D., M. S. Nakhla, R. Achar, and A. Weisshaar, "An Automated Algorithm for Broadband Modeling of High-Frequency Microwave Devices", 2006 IEEE MTT-S International Microwave Symposium Digest, San Francisco, CA, IEEE, pp. 1767 - 1770, 06/2006. Abstract
Paul, D., M. S. Nakhla, R. Achar, and A. Weisshaar, "Broadband Macromodelling of High-Speed Passive Modules", 2006 IEEE Workship on Signal Propagation on Interconnects, Berlin, Germany, IEEE, pp. 107 - 108, 05/2006. Abstract
Kolstad, J., C. Blevins, J. M. Dunn, and A. Weisshaar, "A New Circuit Augmentation Method for Modeling of Interconnects and Passive Components", IEEE Transactions on Advanced Packaging, vol. 29, issue 1, pp. 67 - 77, 02/2006. Abstract
2005
Blevins, C., and A. Weisshaar, "Derivation of a network macromodel model with delay extraction for efficient time-domain simulation of lossy transmission lines", IEEE 14th Topical Meeting on Electrical Performance of Electronic Packaging, Austin, TX, IEEE, pp. 341 - 344, 10/2005. Abstract
Mayevskiy, Y., A. Watson, P. Francis, K. Hwang, and A. Weisshaar, "A new compact model for monolithic transformers in silicon-based RFICs", IEEE Microwave and Wireless Components Letters, vol. 15, issue 6, pp. 419 - 421, 06/2005. Abstract
2004
Ferwalt, D. W., and A. Weisshaar, "A base control doherty power amplifier for improved efficiency in GSM handsets", 2004 IEEE MTT-S International Microwave Symposium Digest, vol. 2, Forth Worth, TX, IEEE, pp. 895 - 898, 06/2004. Abstract
Watson, A., Y. Mayevskiy, P. Francis, K. Hwang, G. Srinivasan, and A. Weisshaar, "Compact modeling of differential spiral inductors in si-based RFICs", 2004 IEEE MTT-S International Microwave Symposium Digest, vol. 2, Forth Worth, TX, IEEE, pp. 1051 - 1054, 06/2004. Abstract
Watson, A., D. Melendy, P. Francis, K. Hwang, and A. Weisshaar, "A Comprehensive Compact-Modeling Methodology for Spiral Inductors in Silicon-Based RFICs", IEEE Transactions on Microwave Theory and Techniques, vol. 52, issue 3, pp. 849 - 857, 03/2004. Abstract
2003
Lim, C. Y., R. K. Settaluri, V. K. Tripathi, and A. Weisshaar, "Compact single-level and multilevel folded-line RF power dividers", Microwave and Optical Technology Letters, vol. 39, issue 3, pp. 187 - 189, 11/2003. Abstract
Senguttuvan, R., L. Hayden, and A. Weisshaar, "Mode Coupling in Coplanar Waveguide Bends: A Simple Four-Port Model", 33rd European Microwave Conference, Munich, Germany, IEEE, pp. 643 - 646, 10/2003. Abstract
Settaluri, R. K., and A. Weisshaar, "A broadside-edge-coupled vialess balun", IEEE MTT-S International Microwave Symposium - IMS 2003, Philadelphia, PA, IEEE, pp. 1251 - 1254, 06/2003. Abstract