RF & Microwave Systems, Devices and Materials Group - Microwave Systems

International Congresses

  1. A. Barlabé, A. Comerón, L. Pradell ” Analysis of Planar Discontinuities with the Generalized Transverse Resonance Method taking into account the singular behaviour of fields at Edges ” Microwave Symposium 2000 Proceedings pp. 75-78.Tetuan, Marruecos May-2000
  2. A. Lázaro, M.C. Maya, L. Pradell “Characterization of on-wafer avalanche noise diodes as noise sources” “7èmes journees de caracterisation micro-ondes et materiaux JCMM 2002” Proceedings pp. 235-238 Toulouse, France March-2002
  3. A. Lázaro, M.C. Maya, L. Pradell “Characterization of excess noise ratio of on-wafer avalanche noise diode”“Mediterranean Microwave Symposium MMS2002 Proceedings pp. CP75 – CP78 Cáceres, Spain June-2002
  4. A. Lázaro, M.C. Maya, L. Pradell “FET noise parameters extraction from 50  noise figure measurements using a distributed noise-model” Mediterranean Microwave Symposium MMS2002 Proceedings pp. CP143 – CP146 Cáceres, Spain June-2002
  5. M.C. Maya, A. Lázaro, L. Pradell “Determination of FET noise parameters from 50  noise figure measurements using a distributed noise model” “GAAS2002 – The 10th European Gallium Arsenide & Other Semiconductors Application Symposium” Proceedings pp. 225-228 Milano, Italy 23-24 Sept. 2002
  6. M.C. Maya, A. Lázaro, L. Pradell “Cold-FET ENR Characterisation Applied to the Measurement of On-Wafer Transistor Noise Parameters ” “32nd European Microwave Conference- EuMC-2002 Proceedings pp. 41-44 Milano, Italy 24-26 Sept.2002 (Student Award EuMC-02)
  7. A. Lázaro, D.Girbau, P.de Paco, L. Pradell “Low cost PLDROs for LMDS/MVDS applications for 40 GHz band” “32nd European Microwave Conference- EuMC-2002 Proceedings pp. 445-448 Milano, Italy 24-26 Sept. 2002
  8. E. Artal, B. Aja, M.L. de la Fuente, N. Roddis, D. Kettle, F. Winder, L. Pradell, P. de Paco “Radiometers at 30 and 44 GHz for the Planck mission” “Microwave Technology and Techniques Workshop WPP-203” ESA-CNES Proceedings WPP-203, pp. 41-48 ESTEC, Nordwijk, The Netherlands 8-9 Oct. 2002
  9. A. Rodríguez, A. Comerón, J. Berenguer, L. Pradell “On-Board Wireless Acceleration Acquisition System: Optical Approach” “Wireless Data Communications Onboard Spacecraft Technology and Applications Workshop” – organized by the European Space Agency (ESA ESTEC, Noordwijk, The Netherlands 14-16 April 2003
  10. N. Roddis, D. Kettle, F. Winder, B. Aja, E. Artal, M.L. de la Fuente, J.P. Pascual, A. Mediavilla, L. Pradell, P. de Paco “Differential radiometer at 30 GHz for the Planck mission” 3rd ESA Workshop on Millimetre Wave Technology and Applications: circuits, systems, and measurement techniques WPP-212 Proceedings WPP-212, pp. 81-86 Espoo, Finland May 21-23, 2003
  11. A. Mennella, M. Bersanelli, R.C. Butler, D. Maino, N. Mandolesi, G. Morgante, L. Valenciano, F. Villa, T. Gaier, M. Seiffert, S. Levin, C. Lawrence, P. Meinhold, P. Lubin, J. Tuovinen, J. Varis, T. Kartaavi, N. Hughes, P. Jukkala, P. Sjöman, P. Kangaslahti, N. Roddis, D. Kettle, F. Winder, E. Blackhurst, R. Davis, A. Wilkinson, C. Castelli, B. Aja, E. Artal, M.L. de la Fuente, A. Mediavilla, J.P. Pascual, J. Gallegos, E. Martinez-Gonzalez, P. de Paco, L. Pradell “Advanced pseudo-correlation radiometers for the Planck-LFI instrument ” 3rd ESA Workshop on Millimetre Wave Technology and Applications: circuits, systems, and measurement techniques” WPP-212 Proceedings WPP-212, pp. 69-74 Espoo, Finland May 21-23, 2003
  12. David Girbau, Antonio Lázaro, Lluís Pradell “Electrothermal actuators applied to RF MEMS devices ”“4th Workshop on MEMS for MillimeterWave Communications (MEMSWAVE-2003) Proceedings, pp. D-19 – D-22 LAAS-CNRS, Toulouse, France July 2-4, 2003
  13. F.-J. Pajares, M. Ribó, M. Bonvehí, L. Pradell, J.-R. Regué “Circuit model for Common-to-Differential mode PCB transitions” 2003 IEEE International Symposium On Electromagnetic Compatibility. Proceedings pp. 699-702 Boston, MA, USA August 18-22, 2003
  14. David Girbau, Antonio Lázaro, Lluís Pradell “RF MEMS switches based on the buckle-beam thermal actuator”“33rd European Microwave Conference- EuMC-2003 Proceedings pp. 651-654 Munich,Germany Oct 6-10, 2003
  15. David Girbau, Antonio Lázaro, Lluís Pradell “Extended tuning range RF MEMS capacitors using electrostatic and electrothermal actuators”“SPIE Photonics West 2004 – Micromachining and Microfabrication Proceedings of SPIE, Vol. 5344, pp. 59-70 San José, California, USA 24-29 Jan. 2004
  16. M.C. Maya, A. Lázaro, L. Pradell “On-wafer noise sources characterization” ”SPIE Symposium on Fluctuations and Noise FAN-2004 – Noise in Devices and Circuits II Proceedings of SPIE, Vol. 5470, pp. 448-459 Maspalomas, Gran Canaria, Spain 26-28 May 2004
  17. M.C. Maya, A. Lázaro, L. Pradell “Simultaneous extraction of the small-signal equivalent circuit elements and noise parameters of HBTs”” SPIE Symposium on Fluctuations and Noise FAN-2004 – Noise in Devices and Circuits II Proceedings of SPIE, Vol. 5470, pp. 429-439. Maspalomas, Gran Canaria, España May 26-28, 2004
  18. David Girbau, Antonio Lázaro, Lluís Pradell “Characterization of dynamics in on-wafer RF MEMS variable capacitors using RF measurement techniques”“63rd Automatic RF Techniques Group (ARFTG) Spring 2004 – On Wafer Characterization Conference Digest, pp. 117-123 Fort Worth, TX, USA, 11 June 2004
  19. David Molinero, Enrique Valera, Antonio Lázaro, Angel Rodríguez, Lluís Pradell, Ramón Alcubilla “Fabrication and Characterization of thick oxidized porous silicon in RF ” 2004 Nanoelectronics and Photonics Systems” Proceedings, pp. Universitat Rovira i Virgili, Tarragona (Spain) June 21-22, 2004
  20. David Girbau, Antonio Lázaro, Lluís Pradell “Dynamics characterization in RF MEMS variable capacitors ”“5th Workshop on MEMS for MillimeterWave Communications (MEMSWAVE-2004) Proceedings, pp. C-9 – C-12 Uppsala, Sweden 30/6 – 2/7, 2004
  21. L. Jofre , S. Blanch, A. Cardama, S. Dossche, J.M. González, L. Pradell, J.M. O’Callaghan, J.M. Rius, J. Romeu, B.A. Cetiner, C.H. Chang, J.Y. Qian, M. Bachman, G.P. Li, F. de Flaviis “Integrated RF-MEMS Antenna Systems for Wireless Devices ” (Invited paper) “5th Workshop on MEMS for MillimeterWave Communications (MEMSWAVE-2004) Proceedings, pp. D-1 – D-4 Uppsala, Sweden 30/6 – 2/7, 2004
  22. F.-J. Pajares, M. Ribó, J.-R.M. Regué, P. Rodríguez-Cepeda, L. Pradell “Circuit model for Mode Conversion in Grounded Differential Signal Paths” “2004 IEEE International Symposium On Electromagnetic Compatibility Vol 2, 9-13 Page(s): 392 – 395 Santa Clara, USA 9-13 August, 2004
  23. F.-J. Pajares, M. Ribó, J.-R.M. Regué, P. Rodríguez-Cepeda, L. Pradell “Circuit model for Series Asymmetric Impedances in Differential Signal Paths” “International Symposium On Electromagnetic Compatibility EMC Europe 2004 Eindhoven, Holland 6-10 Sept., 2004
  24. B.Aja, E. Artal, L. de la Fuente, J.P. Pascual, A. Mediavilla, N. Roddis, D. Kettle, F. Winder, L. Pradell, P.de Paco “Very Low Noise Differential Radiometer at 30 GHz” 34th European Microwave Conference-2004 EuMC-2004 Proceedings pp. 749-752 Amsterdam, Holand 11-15 Oct. 2004
  25. Casals-Terre, J.; Shkel, A “Dynamic analysis of a snap-action micromechanism Sensors, 2004. Proceedings of IEEE. 24-27 Oct. 2004 Page(s):1245 – 1248 vol.3
  26. 26. Molinero, D.; Valera, E.; Lazaro, A.; Girbau, D.; Rodriguez, A.; Pradell, L.; Alcubilla, R “Properties of oxidized porous silicon as insulator material for RF applications”“2005 Spanish Conference on Electron Devices (CDE-2005), pp. 131 – 133 Barcelona, 2-4 Feb. 2005
  27. J. El Hadad, A. Barlabé, A. Comerón “A fast approach to modeling of Finline Step Discontinuities using the weighting functions that incorporate the edge effect in the GTR method”. Proceedings of ICTIS’05 (IEEE – AEECE), pp. 331-334. Tetuán, Marruecos, 3-6 June-2005.
  28. David Girbau, Nerea Otegi, Antonio Lázaro, Lluís Pradell “Origin and Effects of Intermodulation in RF MEMS Capacitors” 6th Workshop on MEMS for MillimeterWave Communications (MEMSWAVE-2005) Proceedings, pp. 45-48 Lausanne, Switzerland 23-24 June 2005
  29. Pajares, F.-J.; Ribó, M.; Regué, J.-R.; Rodriguez-Cepeda, P.; Pradell, L “Circuit models for mode conversion in clock signal distribution” 2005 IEEE International Symposium On Electromagnetic Compatibility Proceedings Volume 1, pp. 39 – 44, USA, 8-12 August, 2005
  30. Pajares, F.-J.; Ribó, M.; Regué, J.-R.; Rodriguez-Cepeda, P.; Pradell, L “A multimodal analysis of the effects of guard traces over near wideband signal paths” 2005 IEEE International Symposium On Electromagnetic Compatibility Proceedings pp. Volume 3 pp. 933 – 936, USA 8-12 August, 2005
  31. David Girbau, Antonio Lázaro, Lluís Pradell “A MEMS Capacitor with Improved RF Power Handling Capability” 35th European Microwave Conference- EuMC-2005 Proceedings pp. 1447-1450 París, France 4-6 Oct. 2005
  32. David Girbau, Antonio Lázaro, Lluís Pradell “Generation of third and higher-order intermodulation products in MEMS capacitors, and their effects” 35th European Microwave Conference- EuMC-2005 Proceedings pp. 1539-1542 París, France 4-6 Oct. 2005
  33. Casals-Terre, J.; Shkel, A. “Snap-action bistable micromechanism actuated by nonlinear resonance” Sensors, 2005 IEEE Oct. 30 2005-Nov. 3 2005 Page(s):4 pp.
  34. David Girbau, Lluís Pradell, Antonio Lázaro, Nerea Otegi, “RF MEMS multidisciplinary characterization platform based on microwave instrumentation”, 7th International Symposium on RF MEMS and RF Microsystems (MEMSWAVE-2006), pp. 127-130. Orvieto, Italy. June 2006.
  35. Francisco-Javier Pajares, Pablo Rodríguez-Cepeda, Miquel Ribó, Joan-Ramon Regué, Lluís Pradell “Analysis of the Effects of Series Filtering in Coupled-Strip Sections” 2006 IEEE International Symposium On Electromagnetic Compatibility. Proceedings Volume 1, pp. 38-42 Portland, OR, USA, 14-18 August, 2006
  36. F.-J. Pajares, M. Ribó, J.-R.M. Regué, P. Rodríguez-Cepeda, L. Pradell “A multimodal analysis of the effects of series filtering over high speed signal paths” International Symposium On Electromagnetic Compatibility EMC Europe 2006 , Barcelona, Spain 4-8 September, 2006
  37. D. Girbau, L. Pradell, A. Lázaro, A. Nebot, “In-plane electrostatically-actuated RF MEMS switch suspended on a low-resistivity substrate”, Proceedings of the 36th European Microwave Conference (EuMC-2006), pp. 1731-1734.
  38. Lazaro, A.; Girbau, D.; Pradell, L.; Nebot, A. “Non linear actuation model for lateral electrostatically-actuated DC-contact RF MEMS series switches”. Spanish Conference on Electron Devices, 2007 (CDE-2007) Jan. 31, 2007 – Feb. 2, 2007 Page(s):181 – 184
  39. David Girbau, Lluís Pradell, M.A. Llamas, Antonio Lázaro, Àlvar Nebot “Electrothermally-actuated RF-MEMS devices manufactured on a low-resistivity substrate“ 8th International Conference on RF MEMS and RF Microsystems (MEMSWAVE-2007), pp 227-230. Barcelona, 26-29 June 2007
  40. Llamas, M.A.; Girbau, D.; Ribó, M.; Pradell, L. “Compact, wideband CPW-to-slotline multimodal transition”. European Microwave Conference, 2007. EuMC-2007 9-12 Oct. 2007, pp. 897 – 900
  41. David Girbau, Marco Antonio Llamas, Antonio Lázaro, Lluís Pradell, Jaume Prada, Pierre Calmon, Patrick Pons, Robert Plana “A Single-Pole-Double-Throw Switch Based on Capacitive-Anchored MEMS” 9th International Conference on RF MEMS and RF Microsystems (MEMSWAVE-2008) CD-Rom Symposium Proceedings, Heraklion, Greece, 1-4 July 2008
  42. Z. Brito, I. Llamas, L. Pradell, A. Corona “Microstrip Switchable Bandstop Filter using PIN Diodes with Precise Frequency and Bandwidth Control”. 38th European Microwave Conference- EuMC-2008. Amsterdam, The Netherlands, Oct. 2008
  43. Musoll-Anguiano, C.; Llamas-Garro, I.; Brito-Brito, Z.; Pradell, L.; Corona-Chavez, A. “Characterizing a Tune All Bandstop Filter”. International Microwave Workshop Series on Signal Integrity and High-Speed Interconnects, 2009 – IMWS 2009-R9. 19-20. Guadalajara, Mexico, Feb. 2009, pp 55-58.
  44. Llamas, M.A.; Girbau, D.; Pausas, E.; Pradell, L.; Aouba, S.; Villeneuve, C.; Puyal, V.; Pons, P.; Plana, R.; Colpo, S.; Giacomozzi, F. “Capacitive and Resistive RF-MEMS switches 2.5D & 3D Electromagnetic and Circuit Modelling”. Spanish Conference on Electron Devices, 2009. CDE 2009. 11-13 Feb. 2009 Page(s): 451 – 454
  45. M.A. Llamas, D. Girbau, L. Pradell, A. Lazaro, F. Giacomozzi and S. Colpo “Characterization of Dynamics in RF-MEMS Switches” 10th International Conference on RF MEMS and RF Microsystems (MEMSWAVE-2009) Trento, Italy, 6th-8th July 2009, pp.117-120
  46. Girbau, D.; Lazaro, A.; Perez, A.; Martinez, E.; Pradell, L.; Villarino, R. “Tunable dual-band filters based on capacitive-loaded stepped-impedance resonators”. European Microwave Conference, 2009 – EuMC 2009.. Sept. 29, 2009-Oct. 1, 2009 Page(s): 113 – 116
  47. Brito-Brito, Z.; Llamas-Garro, I.; Navarro-Munoz, G.; Perruisseau-Carrier, J.; Pradell, L. “UMTS-WiFi switchable bandpass filter”. European Microwave Conference, 2009 – EuMC 2009. Sept. 29, 2009-Oct. 1, 2009 Page(s): 125 – 128
  48. Marco Antonio Llamas, David Girbau, Miquel Ribó, Lluís Pradell, Antonio Lázaro, Flavio Giacomozzi, Benno Margesin. “RF-MEMS uniplanar 180º Phase Switch based on switching between two out-of-phase paths” 11th International Symposium on RF MEMS and RF Microsystems – MEMSWAVE-2010 CD-ROM Symposium Proceedings, Otranto, Italy, 28-30 June 2010
  49. Marco Antonio Llamas, David Girbau, Miquel Ribó, Lluís Pradell, Flavio Giacomozzi, Sabrina Colpo, Fabio Coccetti, Stéphane Aouba. “A highly-repeatable, broadband 180º phase switch for integrated MEMS processes” 12th International Symposium on RF MEMS and RF Microsystems – MEMSWAVE-2011 Symposium Proceedings, Athens, Greece, 27-29 June 2011
  50. Aline Jaimes- Vera, Ignacio Llamas-Garro, Maolong Ke, Yi Wang, Michael J. Lancaster, Lluís Pradell “U-Band Micromachined Coaxial Filter” IEEE MTT-S International Microwave Workshop Series on Millimeter Wave Integration Technologies IMWS-2011, Workshop Proceedings, Sitges, Spain, 15-16- Sept. 2011, pp. 747-750.  IEEE catalog number: CFP11IMS-CDR
  51. Adrián Contreras, Lluís Pradell, Miquel Ribó “A Novel Tunable Multimodal Bandpass Filter” 41st European Microwave Conference EuMC-2011. Proceedings, pp. 1059-1062, Manchester, UK, 9-14 Oct. 2011
  52. Adrián Contreras, Jasmina Casals-Terré, Lluís Pradell, Flavio Giacomozzi, Sabrina Colpo, Jacopo Iannacci, Miquel Ribó “Low-Voltage Capacitive and Ohmic RF-MEMS Switches,” 13th International Symposium on RF MEMS and RF Microsystems – MEMSWAVE-2012 Symposium Proceedings, Antalya, Turkey, 2-4 July 2012
  53. Adrián Contreras, Jasmina Casals-Terré, Lluís Pradell, Flavio Giacomozzi, Sabrina Colpo, Jacopo Iannacci, Miquel Ribó “A RF-MEMS switchable CPW air-bridge,” 7th European Microwave Integrated Circuits Conference EuMiC-2012. Proceedings, pp. 441-444, Amsterdam, The Netherlands, 29-30 Oct. 2012
  54. Adrián Contreras, Lluís Pradell, Jasmina Casals-Terré, Flavio Giacomozzi, Jacopo Iannacci, Miquel Ribó “Reconfigurable uniplanar bandpass filter based on RF-MEMS switched capacitors.”14th International Symposium on RF MEMS and RF Microsystems – MEMSWAVE-2013 Symposium Proceedings, Potsdam, Germany, 1-3 July 2013
  55. Zabdiel Brito-Brito, Ignacio Llamas-Garro, Lluis Pradell, Flavio Giacomozzi, Sabrina Colpo “Frequency and Bandwidth Control of Switchable Microstrip Bandpass Filters using RF-MEMS Ohmic Switches.” 14th International Symposium on RF MEMS and RF Microsystems – MEMSWAVE-2013 Symposium Proceedings, Potsdam, Germany, 1-3 July 2013
  56. Adrián Contreras, Jasmina Casals-Terré, Lluís Pradell, Flavio Giacomozzi, Jacopo Iannacci, Miquel Ribó “Reconfigurable multimodal bandpass filter based on RF-MEMS switchable CPW air-bridges.” 8th European Microwave Integrated Circuits Conference EuMiC-2013. Proceedings, pp. 328-331, Nuremberg, Germany, 6-8 Oct. 2013