RF MEMS

1. Thermally Actuated Nanocrystalline Diamond Micro-Bridges for Microwave and High Power RF Applications
   Balachandran, S.; Kusterer, J.; Connick, R.; Weller, T. M.; Maier, D.; Dipalo, M.; Kohn, E.;Microwave Symposium, 2007. IEEE/MTT-S International, [Full Paper]

2. MEMS Based 3-D Micro Coaxial Transmission Lines, Natarajan, S.P.; Weller, T.M.; Wireless and Microwave Technology Conference, 2006. WAMICON '06. IEEE Annual 4-5 Dec. 2006 Page(s):1 - 3 [Full Paper]

3. Integrated Micro Coaxial Air-Lines with Perforations, Natarajan, S.P.; Weller, T.M.; Hoff, A.M.;Microwave Symposium Digest, 2006. IEEE MTT-S InternationalJune 2006 Page(s):424 - 427 [Full Paper]

4. MEMS Series Switch with Nanometer Wide Gaps in Suspended Coplanar Waveguide Transmission Lines
   Ketterl, T.; Weller, T.; Rossie, B.;Microwave Symposium Digest, 2006. IEEE MTT-S International, June 2006, Page(s):255 - 258 [Full Paper]

5. Design and modeling of 4-bit slow-wave MEMS phase shifters, Lakshminarayanan, B.; Weller, T.M.;Microwave Theory and Techniques, IEEE Transactions on, Volume 54, Issue 1, Jan. 2006 Page(s):120 - 127 [Full Paper]

6. Design and Modeling of 4-bit Slow-Wave MEMS Phase Shifters Balaji Lakshminarayanan and Thomas M. Weller, IEEE Trans. MTT, Jan 2005 [Full Paper]

7. Slow Wave Phase Shifter Model and Applications, B. Lakshminarayanan and T. Weller, Proc. IEEE Wireless and Technology Conference, 2005. [Full Paper]

8. Electronically Tunable Multi-Line TRL Using an Impedance Matched Multi-Bit MEMS Phase Shifter
   B. Lakshminarayanan and T. Weller, IEEE Microwave and Guided Wave Letters, Feb. 2005 [Full Paper]

9. Reconfigurable MEMS Transmission Lines with Independent ZO- and β-Tuning, B. Lakshminarayanan and T. Weller, Proc. IEEE International Microwave Symposium, 2005 [Full Paper]

10. Focused Ion Beam Milled Sub-Micron Capacitive Gaps in Coplanar Transmission Lines, Thomas Ketterl, Thomas M. Weller, et al,  Proc. IEEE Antennas and Propagation Symposium, 2005 [Full Paper]

11. MEMS Tunable Planar Inductors Using DC-Contact Switches, S. Balachandran, B. Lakshminarayanan, T. Weller, and Matthew Smith, Proc. European Microwave Conference, 2004 [Full Paper]

12. Tunable MEMS Bandpass Filter Using Distributed MEMS Transmission Lines, B. Lakshminarayanan, T. Weller, IEEE MTT-S 2003 [Full Paper]

13. Distributed MEMS Phase Shifters on Silicon Using Tapered Impedance Unit Cells, B. Lakshminarayanan and T. Weller, Proc. IEEE MTT-S 2002 [Full Paper]

14. A Micromachined Tunable CPW Resonator, T. Ketterl, T. Weller et al, Proc. IEEE MTT-S 2001 [Full Paper]

15. Three-Dimensional High-Frequency Distribution Networks—Part I: Optimization of CPW Discontinuities, T. Weller et al, IEEE Trans. MTT, Oct. 2000 [Full Paper]

16. Three-Dimensional High-Frequency Distribution Networks—Part II: Packaging and Integration, R. M Henderson, T. Weller et al, IEEE Trans. MTT, Oct. 2000 [Full Paper]

17. Three-Dimensional W-Band Circuits Using Si Micromachining, R. M Henderson, T. Weller et al, Proc. IEEE MTT-S, 1999 [Full Paper]

18. Quasi-Static Design Technique for mm-Wave Micromachined Filters with Lumped Elements and Series Stubs, T. Weller et al, EEE Trans. MTT, Jun. 1997 [Full Paper]

19. New Results Using Membrane Supported Circuits: A Ka-Band Power Amplifier and Survivability Testing, T. Weller et al, IEEE Trans. MTT, 1996 [Full Paper]

20. A Millimeter Wave Micromachined Low Pass Filter With Lumped Elements, T. Weller et al, Proc. IEEE MTT-S, 1996 [Full Paper]

21. A 250-GHZ Microshield Bandpass Filter, IEEE Guided Wave Letters, May 1995 [Full Paper]

22. High Performance Microshield Line Components, T. Weller at al, IEEE Trans. MTT, Mar. 1995 [Full Paper]

23. Miniature Stub and Filter Designs using the Microshield Transmission Line, T. Weller et al, Proc. IEEE MTT-S, 1995 [Full Paper]

24. Membrane Technology (MIST-T) Applied to Microstrip : A 33 GHz Wilkinson Power Divider, T. Weller et al, Proc. IEEE MTT-S 1994 [Full Paper]

25. Terahertz Bandwidth Characterization of Coplanar Waveguide on Dielectric Membrane via Time-Domain Electro-Optic Sampling, H. Cheng, T. Weller et al, Proc. IEEE MTT-S, 1994 [Full Paper]

26. Terahertz Bandwidth Characteristics of Coplanar Transmission Lines on Low Permittivity Substrates, Heng-Ju Cheng, T. Weller et al, IEEE Trans. MTT, Dec. 1994 [Full Paper]

27. Terahertz - Bandwidth Pulse Propagation on Coplanar Stripline Fabricated on a Thin Membrane, H. Cheng, T. Weller et al, IEEE Microwave and Guided Wave Letters, March 1994 [Full Paper]

28. Micromachined Circuits for millimeter - and sub-millimeter-Wave Applications, Linda P. B Katehi, T. Weller et al, IEEE Antennas and Propagation Magazine, Oct. 1993 [Full Paper]

29. Experimental Results on Microshield Transmission Line Circuits, T. Weller et al, Proc. IEEE MTT-S, 1993 [Full Paper]

ANTENNAS

1. A 3 × 3, K-Band CPW-fed, Aperture-Coupled Antenna Array for Radiometer Applications
   Christopher R. Trent, Saravana P. Natarajan, and Thomas M. Weller, Proc. European Microwave Symposium, 2005 [Full Paper]

2. M. Scardelletti, et al., “Coplanar Waveguide-Fed Slot Antennas on Cylindrical Substrates,”
   International J. of Electronics and Communications, January 2005 [Full Paper]

3. Design and Tolerance Analysis of a 21 GHz CPW-Fed Slot-Coupled, Microstrip Antenna on Etched Silicon, C. R. Trent and  T. Weller, Proc. IEEE AP-S , 2002 [Full Paper]

4. K-Band Direct Detect Si Micromachined Radiometer, M. Smith, T. Weller et al, Proc. IEEE MTT-S, 2001[Full Paper]

5. A Double Folded-Slot Antenna at 94 GHz, Sanjay Raman, T. Weller et al, 1995 [Full Paper]

6. Single and Double Folded-Slot Antennas on Semi-Infinite Substrates, T. Weller et al, IEEE Trans. AP-S, Dec. 1995 [Full Paper]

UWB

1. Enhanced Tunable Ultra-Wideband Pulse Generation Based on Variable Edge-Rate Compression
   Maxwell, E.; Weller, T.; Harrow, J.;Radar Conference, 2006. 3rd European Sept. 2006 Page(s):198 - 201 [Full Paper]

2. A Tunable Ultra-Wideband Pulse Generator Using a Variable Edge-Rate Signal Maxwell, Erick; Weller, Thomas; Harrow, Jeffrey; Circuits and Systems, 2006. APCCAS 2006. IEEE Asia Pacific Conference on 4-7 Dec. 2006 Page(s):1695 - 1698 [Full Paper]

3. UWB Sensor Networks, Quenton Bonds

4. A Variable Edge-Rate Compression Approach to Tunable Ultra-Wideband Pulse Generation, Erick Maxwell, Thomas M. Weller et.al, Proc. IEEE Sarnoff Symposium, 2006

PASSIVE DEVICES / CIRCUITS

1. Multifunctional ferrimagnetic-ferroelectric thin films for microwave applications , R. Heindl, H. Srikanth, S. Witanachchi, P. Mukherjee, A. Heim, G. Matthews, S. Balachandran, S. Natarajan, and T. Weller , Applied Physics Letters;Appl. Phys. Lett.;APL Volume 90 Issue 25 2007-06-18 [Full Paper]

2. A Low-Profile Broadband Strip-Line Balun, Sergio E. Melais, Thomas Weller, and Mike J. Wilhelm, Proc. IEEE Antennas and Propagation Symposium, 2005 [Full Paper]

3. L. Lopez and T. Weller, “A Low-Loss, Quartz-Based Cross-Coupled Filter Integrated onto Low
   Resistivity Silicon,” IEEE Trans. MTT, August 2004, 1809-1812 [Full Paper]

4. S-Band Reflection Type Variable Attenuator, C. R Trent, T. Weller, IEEE Microwave and Wireless Components Letters, Jul. 2002 [Full Paper]

5. Miniaturized Slow-Wave Coplanar Waveguide Circuits on Low Resistivity Silicon, J. Naylor, T. Weller et al, Proc. IEEE MTT-S 2002 [Full Paper]

6. Miniaturized Wilkinson Power Dividers Using Capacitive Loading, M. C. Scardellitti, T. Weller et al, IEEE Microwave and Wireless Components Letters, Jan. 2002 [Full Paper]

7. Enhancing the Simulation Accuracy of RF Designs With Consistent Characterization and Modeling Techniques, V. Cojocaru, T. Weller et al, 2002 [Full Paper]

8. 60 GHz Coplanar Waveguide Couplers and Slotline Transitions on Polished Beryllium Oxide, B. Lakshminarayanan, T. Weller et al, Proc. IEEE MTT-S, 2001 [Full Paper]

9. Edge Coupled Coplanar Waveguide Bandpass Filter Design, T. Weller, Proc. IEEE MTT-S 2000 [Full Paper]

10. Edge Coupled Coplanar Waveguide Bandpass Filter Design, T. Weller, Proc. IEEE Trans. MTT 2000 [Full Paper]

11. CPW-Stripline Transitions on Silicon over the 0-20 GHz range, C. R. Trent, T. Weller et al, 2000 [Full Paper]

12. A Substrate-Dependent CAD Model for Ceramic Multilayer Capacitors, B. Lakshminarayanan, T. Weller et al, IEEE Trans. MTT, Oct. 2000 [Full Paper] 

13. Analysis of Cylindrical Transmission Lines with the Finite-Difference Time Domain Method, Nihad Dib, T. Weller et al, IEEE Trans. MTT, 1999 [Full Paper]

14. Bandstop series stubs for coplanar waveguide on GaAs, T. Weller et al, Electronics Letters, April 1997 [Full Paper]

15. Optimization of MM-Wave Distribution Networks Using Silicon-Based CPW, T. Weller et al, Proc. IEEE MTT-S 1998 [Full Paper]

16. Analysis of 3-D Structures using the Finite Difference Time Domain Method, Nihad Dib, T. Weller et al, Proc. IEEE MTT-S, 1998 [Full Paper]

17. FDTD Modeling of Ceramic Multilayer Capacitors using Lumped Equivalent Models, T. Weller et al, 1999 [Full Paper]

18. High Impedance Micromachined Lines for Filter Design on Silicon, T. Weller, 1998 [Full Paper]

19. Analysis of a Novel Noncontacting Waveguide Backshort, T. Weller et al, IEEE Trans. MTT, May 1995 [Full Paper]

20. Automatic Characterization of Ceramic Multilayer Capacitors, E. Benable, T. Weller et al [Full Paper]

21. Transmission of Ultra-High-Bandwidth Pulses on a Low-Distortion Coplanar Stripline, H. J Cheng, T. Weller et al [Full Paper]

SENSORS

1. Sensitivity Tunable Inductive Fluid Conductivity Sensor Based on RF Phase Detection, Saravana P. Natarajan, Thomas M. Weller and David P. Fries, IEEE Sensors Journal, vol. 7, Issue 7, Sep. 2007, Pg:1300-1301 [Full Paper]

2. Contact-less Toroidal Fluid Conductivity Sensor Based on RF Detection, Saravana P. Natarajan, Jeremy Huffman, Thomas M. Weller, David P. Fries, Proc. IEEE Sensors Conference, 2004 [Full Paper]

3. Maskless Lithographic PCB/Laminate MEMS for a Salinity Sensing System
   D. Fries, G. Steimle, S. Natarajan, S. Ivanov, H. Broadbent, T. Weller [Full Paper]

4. Enabling reliable, cost-effective, wirelessly networked, miniature sensing based on an open standard, Leonard Guerra Hugo Morales Dr. Thomas Weller David Fries

5. AUTOMATION AND REAL-TIME VERIFICATION OF PASSIVE COMPONENT S-PARAMETERMEASUREMENTSUSING LOSS FACTOR CALCULATIONS, J. Capwell, T. Weller at al, Microwave Journal, March 2004 [Full Paper]

OTHERS

1. Microwave Spectroscopy in Skin Cancer Detection and Diagnosis (A Preliminary View), Thomas Ricard, David Klinowski, Thomas Weller

2. Microwave Spectroscopy in Skin Cancer Detection and Diagnosis, Thomas A. Ricard et.al

3. Wireless Sensor Systems: An Approach for a Multiuniversity Design Course, Jeff Frolik and T. Weller, IEEE Trans. Education, May 2002 [Full Paper]

4. On-Wafer Calibration Using Space Conservative (SOLT) Standards, M. Imparato, T. Weller et al, Proc. IEEE MTT-S 1999 [Full Paper]

5. Education Tomorrow's Microwave Engineer: A New Undergraduate Laboratory Uniting Circuit and System Concepts, T. Weller at al, Proc. IEEE MTT-S , 1998 [Full Paper]

6. Wireless Circuit and System Design: A New Undergraduate Laboratory, P. G. Flikkema, T. Weller et al, Proc. Frontiers in Education Conference, 1997 [Full Paper]

7. Simulation of a 915 MHz Receiver Using the HP Advanced Design System, E. Benabe, T. Weller et al [Full Paper]

rf MICROSYSTEMS GROUP

A part of the Center for Wireless and Microwave and Information Systems, USF