Zobrazeno 1 - 10
of 57
pro vyhledávání: '"R. Knochel"'
Publikováno v:
Radioengineering, Vol 20, Iss 4, Pp 857-865 (2011)
Relating coupling and external quality factor of a filter to the physical parameters of the structure which is the final step of any filter design is usually complicated due to geometrical complexities of the filter, or in the case of microstrip reso
Externí odkaz:
https://doaj.org/article/65ba017773f949438bf4d296525155b4
Akademický článek
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Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 40:228-236
A conically shaped cavity that intrinsically avoids mode-degeneration while maintaining the advantages of cylindrical resonators is presented. The cavity was applied to surface resistance measurements of YBaCuO thin films on MgO substrates at 18 GHz.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7b8b8babb79fabeaee957d5114ac7ac0
https://doi.org/10.1109/22.120094
https://doi.org/10.1109/22.120094
Autor:
T. Hauschild, R. Knochel
Publikováno v:
1996 IEEE MTT-S International Microwave Symposium Digest.
A technique suitable for measuring the permittivity of solids up to 1000/spl deg/C in X-band is introduced. Although techniques for permittivity measurements are well known, there exist a lot of technological problems such as calibration and choosing
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cc1cbfceb71a2ab68ef679defe13e59f
https://doi.org/10.1109/mwsym.1996.512265
https://doi.org/10.1109/mwsym.1996.512265
Autor:
R. Knochel, M. Daas
Publikováno v:
1991 IEEE MTT-S International Microwave Symposium Digest.
A novel measurement technique for simultaneous remote range and temperature determination that utilizes the microwave (10.0 GHz) backscatter from a traveling ultrasound wave (about 22 kHz) is discussed. Such a system is operated in a closed environme
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::755c8c3f4d296365c38cb2b4281d1397
https://doi.org/10.1109/mwsym.1991.147183
https://doi.org/10.1109/mwsym.1991.147183
Publikováno v:
1991 IEEE MTT-S International Microwave Symposium Digest.
A truncated cone cavity that avoids degeneration between the TE/sub 01n/ and TM/sub 11n/ modes occurring in the most frequently used circular cylindrical cavities for materials measurements is described. Analytical expressions for the field component
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::38df6f7f07380fff6c19b0a0ee7cb639
https://doi.org/10.1109/mwsym.1991.147185
https://doi.org/10.1109/mwsym.1991.147185
Autor:
R. Knochel, B. Mayer
Publikováno v:
IEEE International Digest on Microwave Symposium.
Analytical formulas that make it possible to fully exploit the design flexibility inherent in two-arm branchline-couplers with open stubs at the symmetry-planes in order to avoid low-impedance lines are derived. A broadbanding procedure that improves
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::366061eaa909fefd83c7107320850195
https://doi.org/10.1109/mwsym.1990.99602
https://doi.org/10.1109/mwsym.1990.99602
Autor:
R. Knochel, B. Burchardt
Publikováno v:
Electronics Letters. 28:1026-1028
A nonideal single-sideband modulator using a cascade of binary switched phase shifters as part of a homodyne vector network analyser can operate with an improved image sideband suppression by means of a proper switching-time variation.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::032d77d2e06e551b02755d56f0136fcb
https://doi.org/10.1049/el:19920651
https://doi.org/10.1049/el:19920651
Publikováno v:
22nd European Microwave Conference, 1992.
New optical methods are presented to generate millimeter wave signals with high frequency stability. One of the new methods applies optical superharmonic injection locking by mixing the beams of two lasers, and a phase locking technique to stabilize
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e4188c4e656e409a94f2f7c33953de5e
https://doi.org/10.1109/euma.1992.335845
https://doi.org/10.1109/euma.1992.335845
Akademický článek
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