Zobrazeno 1 - 10
of 72
pro vyhledávání: '"R.C Smythe"'
Publikováno v:
Applied Surface Science. 165:127-134
La 3 Ga 5.5 Ta 0.5 O 14 shows promise for high temperature, high frequency crystal resonator applications. We report on two methods for thinning wafers of this material. Using wet chemical etching, we found that HCl- or HF-based solutions produced et
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2d13b6bf1d3cf29f292304cba1358d21
https://doi.org/10.1016/s0169-4332(00)00367-6
https://doi.org/10.1016/s0169-4332(00)00367-6
Publikováno v:
IEEE transactions on ultrasonics, ferroelectrics, and frequency control. 47(2)
Materials in the langasite family are of current interest for both bulk wave and surface wave devices. Piano-convex Y-cut bulk wave resonators have been built and tested on overtones 1 through 9 using LGS (langasite; La/sub 3/Ga/sub 5/SiO/sub 14/), L
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::622dce7ac17f2469a529c165b503fb24
https://pubmed.ncbi.nlm.nih.gov/18238550
https://pubmed.ncbi.nlm.nih.gov/18238550
Publikováno v:
2002 IEEE Ultrasonics Symposium, 2002. Proceedings..
Resonant acoustic damping in planoconvex (trapped-mode) langatate (La/sub 3/Ga/sub 5.5/Ta/sub 0.5/O/sub 14/) disks was measured at frequencies from 2 MHz to 18 MHz and temperatures from 130 K to 450 K. A broad anelastic relaxation peak was observed i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d726397befef353a18a6314426fac8da
https://doi.org/10.1109/ultsym.2002.1193555
https://doi.org/10.1109/ultsym.2002.1193555
Publikováno v:
Proceedings of the 1999 Joint Meeting of the European Frequency and Time Forum and the IEEE International Frequency Control Symposium (Cat. No.99CH36313).
Materials in the langasite family are of current interest for both bulk-wave and surface-wave devices. Plano-convex Y-cut bulk-wave resonators have been built and tested on overtones 1-9 using LGS (langasite, La/sub 3/Ga/sub 5/SiO/sub 14/), LGN (lang
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0b6f4e88deca147b84f93ccb5f303846
https://doi.org/10.1109/freq.1999.841430
https://doi.org/10.1109/freq.1999.841430
Autor:
R.C. Smythe, R.B. Angove
Publikováno v:
Proceedings of the 42nd Annual Frequency Control Symposium, 1988..
Fundamental mode SC-cut resonators with potential for oscillator and filter applications have been developed at 333 MHz, 500 MHz, and 1 GHz using chemical milling to form a ring-supported structure. A novel electrode configuration which eliminates re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a346a30bcf9f2edfba0a680476ced05c
https://doi.org/10.1109/freq.1988.27582
https://doi.org/10.1109/freq.1988.27582
Autor:
W.J. Riley, E.P. EerNisse, M.M. Driscoll, Claude Audoin, John R. Vig, Raymond L. Filler, R.C. Smythe, R.D. Weglein, R.M. Garvey, Leonard S. Cutler
Publikováno v:
Proceedings of the 1992 IEEE Frequency Control Symposium.
The effects of acceleration on quartz and atomic frequency sources are discussed. Guidelines are provided for the specification and testing of oscillator acceleration sensitivities. The discussion includes: steady-state acceleration effects; gravity
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5830768f164f511b0696a6822416412e
https://doi.org/10.1109/freq.1992.269960
https://doi.org/10.1109/freq.1992.269960
Publikováno v:
Proceedings of the 45th Annual Symposium on Frequency Control 1991.
A very low profile, surface-mountable quartz crystal unit capable of withstanding shock levels of 100000 Gs or more has been developed. An AT-cut, 33 MHz, 3rd overtone unit has overall dimensions of .31 in (7.9 mm) diameter and 0.05 in (1.3 mm) maxim
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e1594f7b5b1149181d16d800065d9ac
https://doi.org/10.1109/freq.1991.145892
https://doi.org/10.1109/freq.1991.145892
Autor:
R.C. Smythe
Publikováno v:
Proceedings of the 1998 IEEE International Frequency Control Symposium (Cat. No.98CH36165).
The growth of langasite (LGS) and certain of its isomorphs has recently been undertaken in the U.S. In parallel with this effort, PTI and the University of Central Florida are conducting a study of the material and bull-wave resonator properties of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::df03fb30250884f88fea758d09be8f0f
https://doi.org/10.1109/freq.1998.717984
https://doi.org/10.1109/freq.1998.717984
Autor:
E. Adler, M.P. da Cunha, R.C. Smythe, Donald C. Malocha, R. Helmbold, Y.S. Zhou, M. Chou, S. Frederick
Publikováno v:
Proceedings of the 2000 IEEE/EIA International Frequency Control Symposium and Exhibition (Cat. No.00CH37052).
Measurements, experiments and extracted parameters of the material constants of langatate (LGT), langanite (LGN), and langasite (LGS) versus temperature are presented from work conducted at the University of Central Florida. The data presented is fro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::11a66bd4a6c9ccf21e9fb0bd99e6df10
https://doi.org/10.1109/freq.2000.887354
https://doi.org/10.1109/freq.2000.887354
Autor:
G.E. Hague, R.C. Smythe
Publikováno v:
Proceedings of the 2000 IEEE/EIA International Frequency Control Symposium and Exhibition (Cat. No.00CH37052).
The piezoelectric constants of LGN (langanite, La/sub 3/Ga/sub 5.5/Nb/sub 0.5/O/sub 14/), LGS (langasite, La/sub 3/Ga/sub 5/SiO/sub 14/) and LGT (langatate, La/sub 3/Ga/sub 5.5/Ta/sub 0.5/O/sub 14/) have been determined over a temperature range of -5
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2d19518cc38bed9ae7b5922cc9aa0fd4
https://doi.org/10.1109/freq.2000.887352
https://doi.org/10.1109/freq.2000.887352