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- Ulrich Stumper
- IEEE Transactions on Instrumentation andâ€¦
- 2005

For the 7-term TRL calibration of a four-sampler vector network analyzer (VNA), expressions for the deviations of the S-parameters of two-port test objects are presented as functions of theâ€¦ (More)

- Ulrich Stumper
- IEEE Trans. Instrumentation and Measurement
- 2003

For the widespread, 12-term TMSO calibration of four-sampler vector network analyzers (VNAs), the sensitivity coefficients of the -parameters of two ports are determined as functions of theâ€¦ (More)

- Ulrich Stumper
- 2004 Conference on Precision Electromagneticâ€¦
- 2004

For the 7-term TRL calibration of a four-sampler vector network analyser (VNA), expressions are presented for the deviations of the S-parameters of two-port test objects (d.u.ts) as functions of theâ€¦ (More)

- Ulrich Stumper
- IEEE Transactions on Instrumentation andâ€¦
- 2009

For the seven-term, short-open-load-reciprocal (SOLR) calibration method to calibrate a four-sampler vector network analyzer (VNA), the expressions for the deviations of the seven error terms and ofâ€¦ (More)

- Ulrich Stumper
- IEEE Transactions on Instrumentation andâ€¦
- 2007

For the seven-term general through-attenuator-network (TAN) self-calibration method of a four-sampler vector network analyzer and for all derived calibration methods such as through-line-network,â€¦ (More)

- Ulrich Stumper, Thorsten Schrader
- IEEE Transactions on Instrumentation andâ€¦
- 2012

To perform system error correction of a microwave vector network analyzer (VNA), several calibration procedures are applied, several of which are derived from the well-known short-open-load-throughâ€¦ (More)

- Andras TÃ¶rÃ¶k, Dieter Janik, Wolfgang Peinelt, Dieter Stumpe, Ulrich Stumper
- IEEE Trans. Instrumentation and Measurement
- 2001

- Ulrich Stumper
- 2008 Conference on Precision Electromagneticâ€¦
- 2008

For the 7-term SOLR calibration method to calibrate a four-sampler vector network analyser (VNA), the deviations of the seven error terms, as well as of the the measured S-parameters are determinedâ€¦ (More)

- A.P. Jurkus, Ulrich Stumper
- Proceedings of the IEEE
- 1986

A review of the current status of national impedance and reflection standards at RF and microwave frequencies is presented. In the first part, various proposals are examined for realizing a givenâ€¦ (More)

- Ulrich Stumper
- 1981 11th European Microwave Conference
- 1981

A simple microwave multiport network for the determination of complex reflection coefficients is described. It is characterized by the detection of the standing wave pattern generated by the unknownâ€¦ (More)