Effects of nonlinearities from the analog frequency-ramps of the fast network-analyser
The developed network analyser with four ports allows very fast measurements of S-parameters in comparison with a conventional network analyser. This is possible because highly linear analogue frequency ramps are used. Thus the settling times of stepped frequency sweeps of conventional analysers are...
| Main Authors: | , , |
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| Format: | Article |
| Language: | deu |
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Copernicus Publications
2003-01-01
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| Series: | Advances in Radio Science |
| Online Access: | http://www.adv-radio-sci.net/1/33/2003/ars-1-33-2003.pdf |
| _version_ | 1811313976652333056 |
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| author | B. Schulte T. Musch B. Schiek |
| author_facet | B. Schulte T. Musch B. Schiek |
| author_sort | B. Schulte |
| collection | DOAJ |
| description | The developed network analyser with four ports allows very fast measurements of S-parameters in comparison with a conventional network analyser. This is possible because highly linear analogue frequency ramps are used. Thus the settling times of stepped frequency sweeps of conventional analysers are eliminated. The required high linearity and high stability of the frequency ramps is achieved by using fractional divider phase locked loop circuits. For a practical realization it is necessary to accept small nonlinearities for the linear analogue frequency ramps. For this reason investigations were performed to clarify effects of small nonlinearities on the measurement precision. Nonlinearities are willingly implemented by programming the fractional frequency ramps accordingly. The gained expertise allows for a further improvement of measurement accuracy and dynamic range. |
| first_indexed | 2024-04-13T11:03:52Z |
| format | Article |
| id | doaj.art-ebd9cc45889447e9aa6e7b735793dbdd |
| institution | Directory Open Access Journal |
| issn | 1684-9965 1684-9973 |
| language | deu |
| last_indexed | 2024-04-13T11:03:52Z |
| publishDate | 2003-01-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Advances in Radio Science |
| spelling | doaj.art-ebd9cc45889447e9aa6e7b735793dbdd2022-12-22T02:49:19ZdeuCopernicus PublicationsAdvances in Radio Science1684-99651684-99732003-01-0113336Effects of nonlinearities from the analog frequency-ramps of the fast network-analyserB. SchulteT. MuschB. SchiekThe developed network analyser with four ports allows very fast measurements of S-parameters in comparison with a conventional network analyser. This is possible because highly linear analogue frequency ramps are used. Thus the settling times of stepped frequency sweeps of conventional analysers are eliminated. The required high linearity and high stability of the frequency ramps is achieved by using fractional divider phase locked loop circuits. For a practical realization it is necessary to accept small nonlinearities for the linear analogue frequency ramps. For this reason investigations were performed to clarify effects of small nonlinearities on the measurement precision. Nonlinearities are willingly implemented by programming the fractional frequency ramps accordingly. The gained expertise allows for a further improvement of measurement accuracy and dynamic range.http://www.adv-radio-sci.net/1/33/2003/ars-1-33-2003.pdf |
| spellingShingle | B. Schulte T. Musch B. Schiek Effects of nonlinearities from the analog frequency-ramps of the fast network-analyser Advances in Radio Science |
| title | Effects of nonlinearities from the analog frequency-ramps of the fast network-analyser |
| title_full | Effects of nonlinearities from the analog frequency-ramps of the fast network-analyser |
| title_fullStr | Effects of nonlinearities from the analog frequency-ramps of the fast network-analyser |
| title_full_unstemmed | Effects of nonlinearities from the analog frequency-ramps of the fast network-analyser |
| title_short | Effects of nonlinearities from the analog frequency-ramps of the fast network-analyser |
| title_sort | effects of nonlinearities from the analog frequency ramps of the fast network analyser |
| url | http://www.adv-radio-sci.net/1/33/2003/ars-1-33-2003.pdf |
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