Zobrazeno 1 - 5
of 5
pro vyhledávání: '"Timothy L. Bagwell"'
Publikováno v:
Proceedings., IEEE Ultrasonics Symposium.
The development of a fast, agile signal in the frequency range of 10 MHz to 3 GHz based on direct digital synthesis of signals from 14 to 58 MHz is described. A high-performance SAW (surface acoustic wave) filter module was designed to provide IF (in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::933098d98c9581f1a6c929803022b6ab
https://doi.org/10.1109/ultsym.1989.66965
https://doi.org/10.1109/ultsym.1989.66965
Publikováno v:
IEEE 1988 Ultrasonics Symposium Proceedings..
A novel method is described for damping unwanted acoustic energy in high-frequency SAW (surface acoustic wave) devices through the use of a polyimide layer which is patternable with high resolution on the surface of the device. The polyimide layer ma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c648f74bbde4d07c5c9f3aa02d755eeb
https://doi.org/10.1109/ultsym.1988.49383
https://doi.org/10.1109/ultsym.1988.49383
Publikováno v:
The Journal of the Acoustical Society of America. 92:1194-1195
A surface transverse wave resonator comprises a piezoelectric substrate having at least one surface, wherein said substrate includes a crystalline structure that permits the propagation of transverse waves. The resonator also comprises a transducing
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::15d2b4470158841500df064bdde695f4
https://doi.org/10.1121/1.404008
https://doi.org/10.1121/1.404008
Publikováno v:
IEEE 1985 Ultrasonics Symposium.
Mechanical and structural aspects of SAW device transducer metallization were investigated in a series of experiments. The center frequency of a SAW resonator on ST Quartz was found to increase by up to several hundred ppm during heat treatment. This
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::964a91e3630289b9a02cf35c3f2806d7
https://doi.org/10.1109/ultsym.1985.198512
https://doi.org/10.1109/ultsym.1985.198512
Publikováno v:
IEEE 1986 Ultrasonics Symposium.
A thick film hybrid circuit incorporating two low loss group-type unidirectional transducer (GUDT) SAW filters was developed for use in a receiver IF section centered at 310.7 MHz. The two filters were cascaded with a preamp and a buffer amplifier on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ec378bfe7e07d0fafca61490c59c32c8
https://doi.org/10.1109/ultsym.1986.198753
https://doi.org/10.1109/ultsym.1986.198753