CoMo70 - Connector Modelling up to 70 GHz

A R&D project with the Swiss Federal Institute of Technology (ETHZ) and partners from industry to model small coaxial connectors. This project helped the METAS RF & MW laboratory to establish traceability for its VNA services up to 67 GHz. An extension of the activities in CoMo70 has been realized with the follow-up project CalCon.

Publications

Doctoral Thesis

• J. Hoffmann,Traceable S-parameter measurements in coaxial transmission lines up to 70 GHz, Dissertation ETH no. 18593, October 2009
  pdf (2720 kB)

Journal Papers

• J. Hoffmann, P. Leuchtmann, J. Ruefenacht, R. Vahldieck, A stable bayesian vector network analyzer calibration algorithm, IEEE Trans. Microwave Theory Tech., Vol. 57, Issue 4, pp.869-880, April 2009.
• J. Hoffmann, P. Leuchtmann, J. Ruefenacht, Ch. Hafner, Propagation constant of a coaxial transmission line with rough surfaces”, IEEE Trans. Microwave Theory Tech., accepted for publication

Conference Papers

• J. Hoffmann, P. Leuchtmann, J. Schaub, R. Vahldieck, Computing Uncertainties of S-Parameters by Means of Monte Carlo Simulation, 69th ARFTG Conference, Honolulu, Conference Digest, vol. 69, Jun. 2007
• J. Hoffmann, P. Leuchtmann, R. Vahldieck, Pin Gap Investigations for the 1.85 mm Coaxial Connector, IEEE European Microwave Week, Munich, Proceedings, pp. 388-391,October 2007
• J. Hoffmann, P. Leuchtmann, R. Vahldieck, Over-determined Offset Short Calibration of a VNA, 71st ARFTG Conference, Atlanta, Conference Digest, vol. 71, June 2008.
• J. Hoffmann, P. Leuchtmann, A. Kretz, J. Ruefenacht, R. Vahldieck, Characterization of Coaxial Adapters for S-parameter Measurements, IEEE European Microwave Week, Amsterdam, Proceedings, pp. 313-316, October 2008.
• J. Hoffmann, P. Leuchtmann, J. Ruefenacht, K. Wong, S-parameters of Slotted and Slotless Coaxial Connectors, 74th ARFTG Conference, Boulder, Conference Digest, vol. 74, December 2009

Presentations

• J. Hoffmann, Die Kalibration von Vektor Network Analyzern bis 65 GHz, Interessengruppe elektrische Kalibrier- und Prüftechnik, METAS, Mai 2007
  pdf (31521 kB)
• J. Hoffmann, Pin gap investigations for the 1.85 mm coaxial connector, 29th ANAMET meeting, Fleet (UK), March 2008
  pdf (915 kB)
• J. Ruefenacht, Pin gap aspects in metrological practice, 29th ANAMET meeting, Fleet (UK), March 2008
  pdf (1327 kB)
• J. Hoffmann, Pin gap investigations for the 1.85 mm coaxial connector, European Metrology Workshop, Berlin, April 2008
  pdf (10834 kB)
• J. Ruefenacht, Pin gap aspects in metrological practice, European Metrology Workshop, Berlin, April 2008
  pdf (1517 kB)
• J. Hoffmann, A stable bayesian vector network analyzer calibration algorithm, European Metrology Workshop, Boras (Sweden), May 2009
  pdf (5382 kB)
• J. Ruefenacht, Pin diameter specifications and challenges, European Metrology Workshop, Boras (Sweden), May 2009
  pdf (2392 kB)
• J. Ruefenacht, Pin diameter specifications and challenges, 32nd ANAMET meeting, Teddington (UK), October 2009
  pdf (1961 kB)