Zobrazeno 1 - 10
of 36
pro vyhledávání: '"A.B.M. Jansman"'
Publikováno v:
IEEE transactions on ultrasonics, ferroelectrics and frequency control, 57(12), 2753-2763. IEEE
The quality factor (Q) of a solidly mounted bulk acoustic wave resonator (SMR) is limited by substrate losses, because the acoustic mirror is traditionally optimized to reflect longitudinal waves only. We propose two different design approaches deriv
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bf21842b97373e633923f7feff0933dc
https://doi.org/10.1109/tuffc.2010.1749
https://doi.org/10.1109/tuffc.2010.1749
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 53:723-729
The impedance errors remaining after applying the industry standard "open-short," a "pad-open-short," and a "open-short-load" deembedding scheme on a 0.43-nH 20-GHz high-Q single-loop inductor test structure are investigated using real S-parameter da
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::40e124d42fc68a6837652776f3288572
https://doi.org/10.1109/tmtt.2004.840621
https://doi.org/10.1109/tmtt.2004.840621
Autor:
M.O. Lindstrom, Thomas Schurig, Frank Ludwig, J. Flokstra, A.B.M. Jansman, Dietmar Drung, Jörn Beyer, S. Bechstein
Publikováno v:
IEEE Transactions on Appiled Superconductivity. 11:1315-1318
To further improve the design of our direct-coupled SQUID magnetometers, we performed simulations of the current distribution and thus of the effective area and inductance for various distributions of the 16 parallel 50-/spl mu/m-wide loops forming t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c804b283f0135f9c59678ed79475b446
https://doi.org/10.1109/77.919592
https://doi.org/10.1109/77.919592
Publikováno v:
IEEE Transactions on Appiled Superconductivity. 9:3290-3293
Recently, it was observed that the low frequency noise of slotted SQUIDs is not affected when cooling them down in magnetic fields up to 0.05 mT. This behavior is ascribed to the fact that magnetic vortices are expelled out of the narrow strips into
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b9337395fb21e22cd8b62ca7295ed465
https://doi.org/10.1109/77.783732
https://doi.org/10.1109/77.783732
Publikováno v:
2011 IEEE International Ultrasonics Symposium, 1712-1715
STARTPAGE=1712;ENDPAGE=1715;TITLE=2011 IEEE International Ultrasonics Symposium
STARTPAGE=1712;ENDPAGE=1715;TITLE=2011 IEEE International Ultrasonics Symposium
High-performance solidly mounted bulk acoustic wave resonators (SMRs) can be obtained by employing frame region, if these exhibit type I dispersion. The commonly used piezoelectric material Aluminum Nitride is a type II material, for which type I dis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d3bef9606325b5f308eea53a78589c5c
https://doi.org/10.1109/ultsym.2011.0427
https://doi.org/10.1109/ultsym.2011.0427
Publikováno v:
Proceedings of the IEEE International Ultrasonics Symposium, IUS 2010, 91-94
STARTPAGE=91;ENDPAGE=94;TITLE=Proceedings of the IEEE International Ultrasonics Symposium, IUS 2010
STARTPAGE=91;ENDPAGE=94;TITLE=Proceedings of the IEEE International Ultrasonics Symposium, IUS 2010
Spurious resonance suppression in Bulk Acoustic Wave (BAW) resonators is essential for achieving excellent filter characteristics. These spurious resonances are undesired resonances caused by the finite device edges. The type I mode is the preferred
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8bfa2cf7dd486c15cab9a7b8de112b4a
https://research.utwente.nl/en/publications/df0d9e83-1f97-473e-bace-d965f342a3ce
https://research.utwente.nl/en/publications/df0d9e83-1f97-473e-bace-d965f342a3ce
Publikováno v:
Proceedings of the IEEE International Ultrasonics Symposium (IUS) 2009, 2111-2114
STARTPAGE=2111;ENDPAGE=2114;TITLE=Proceedings of the IEEE International Ultrasonics Symposium (IUS) 2009
STARTPAGE=2111;ENDPAGE=2114;TITLE=Proceedings of the IEEE International Ultrasonics Symposium (IUS) 2009
The quality factor of the traditional Solidly Mounted Resonator (SMR) is limited by substrate losses, as the traditionally employed acoustic mirror reflects longitudinal waves but not shear waves. Modern mirrors do reflect both waves, but design rule
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0e7a64fad52594020c46a90131b8fefc
https://doi.org/10.1109/ultsym.2009.5442065
https://doi.org/10.1109/ultsym.2009.5442065
Autor:
Tuomas Pensala, A.B.M. Jansman, J. J. M. Ruigrok, M. Ylilammi, J.-W. Lobeek, R. Strijbos, F. Vanhelmont
Publikováno v:
2007 IEEE Ultrasonics Symposium Proceedings.
For a three-dimensional description of rectangular BAW resonators, a simple vibrating membrane model is revisited. Displacement profiles from this model are compared to measured profiles. Furthermore, a method for extraction of dispersion characteris
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::45801a65490bec3e4aba554c7ff0d475
https://doi.org/10.1109/ultsym.2007.264
https://doi.org/10.1109/ultsym.2007.264
Publikováno v:
Proceedings of the 2007 IEEE/MTT-S International Microwave Symposium, 3-8 June 2007, Honolulu, Hawai, 2047-2050
STARTPAGE=2047;ENDPAGE=2050;TITLE=Proceedings of the 2007 IEEE/MTT-S International Microwave Symposium, 3-8 June 2007, Honolulu, Hawai
STARTPAGE=2047;ENDPAGE=2050;TITLE=Proceedings of the 2007 IEEE/MTT-S International Microwave Symposium, 3-8 June 2007, Honolulu, Hawai
This paper discusses the design and optimization of high-Q Bulk-Acoustic-Wave resonators using a Pt/Ta2O5/SiO2 reflector stack. It can be shown that by properly designing the reflector stack and boundary conditions, large performance improvements can
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::25796981f7ee25984bbf1d8433230216
https://doi.org/10.1109/mwsym.2007.380253
https://doi.org/10.1109/mwsym.2007.380253
Publikováno v:
2007 Proceedings 57th Electronic Components and Technology Conference.
In this paper bulk-acoustic-wave (BAW) resonators with high Q-factor Qa at anti-resonance are demonstrated based on a redesigned reflector stack and a lateral design with a guard ring at the border of the resonator. Experimentally a clear maximum of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5aab56f1901dc44fb6cb72a9bc5e3d09
https://doi.org/10.1109/ectc.2007.373793
https://doi.org/10.1109/ectc.2007.373793