Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Yuichi Takamine"'
Autor:
Takanori Toi, Toshiyuki Fuyutsume, Hideki Iwamoto, Tsutomu Takai, Takeshi Nakao, Yuichi Takamine, Masahiro Hiramoto, Masayoshi Koshino
Publikováno v:
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. 66:1006-1013
In response to the increased mobile data traffic, there is a growing need for more low-loss RF band filters with steep frequency characteristics, and high-quality ( $Q$ )-factor and low-temperature coefficient of frequency (TCF) resonators are requir
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a8522d78b86dd10521d77a3145cdbfaa
https://doi.org/10.1109/tuffc.2019.2898046
https://doi.org/10.1109/tuffc.2019.2898046
Autor:
Yuichi Takamine, Masahiro Hiramoto, Masayoshi Koshino, Takanori Toi, Toshiyuki Fuyutsume, Hisashi Yamazaki, Hideki Iwamoto, Haruki Kyoya, Norio Nakajima, Tsutomu Takai, Takeshi Nakao, Hajime Kando
Publikováno v:
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. 64:1382-1389
To develop the high-performance filters and duplexers required for recent long-term evolution frequency bands in mobile handsets, a surface acoustic wave (SAW) resonator is needed that has a higher quality (Q) and a lower temperature coefficient of f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aad2e50338a4b5a3f5b702b1ae80d19a
https://doi.org/10.1109/tuffc.2017.2738119
https://doi.org/10.1109/tuffc.2017.2738119
Autor:
Tsutomu, Takai, Hideki, Iwamoto, Yuichi, Takamine, Toshiyuki, Fuyutsume, Takeshi, Nakao, Masahiro, Hiramoto, Takanori, Toi, Masayoshi, Koshino
Publikováno v:
IEEE transactions on ultrasonics, ferroelectrics, and frequency control. 66(5)
In response to the increased mobile data traffic, there is a growing need for more low-loss RF band filters with steep frequency characteristics, and high-quality ( Q )-factor and low-temperature coefficient of frequency (TCF) resonators are required
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::4b579ea25b068eddb66d71d2f4eec581
https://pubmed.ncbi.nlm.nih.gov/30735992
https://pubmed.ncbi.nlm.nih.gov/30735992
Publikováno v:
2018 Asia-Pacific Microwave Conference (APMC).
Regarding higher frequency above 3 GHz, up until now BAW filters have been believed to be better solution than SAW filters due to their increase of electrodes resistance. This paper describes a new high performance SAW filter surpassing BAW, with 3.5
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::432d0b9eb71a99cd1711f28325f62666
https://doi.org/10.23919/apmc.2018.8617381
https://doi.org/10.23919/apmc.2018.8617381
Autor:
Tsutomu Takai, Hideki Iwamoto, Takeshi Nakao, Masayoshi Koshino, Yuichi Takamine, Toshiyuki Fuyutsume
Publikováno v:
2018 IEEE International Ultrasonics Symposium (IUS).
We discuss transverse modes in a resonator on a multilayer substrate with a thin piezoelectric plate. A generation mechanism of the transverse mode response in I.H.P. SAW (Incredible High-Performance SAW)resonator with a LiTa03 plate is analyzed by u
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4913b25494102ca543ea3992c62f8318
https://doi.org/10.1109/ultsym.2018.8580175
https://doi.org/10.1109/ultsym.2018.8580175
Autor:
Masayuki Koshino, Hideki Iwamoto, Takeshi Nakao, Tsutomu Takai, Masahiro Hiramoto, Yuichi Takamine
Publikováno v:
2017 IEEE International Ultrasonics Symposium (IUS).
I.H.P. SAW (Incredible High-Performance SAW) has a novel multi-layered structure to confine SAW energy in substrate surface area, and it shows extremely high quality (Q) factor, low temperature coefficient of frequency (TCF) and improved electromecha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::171716190298e6acfaeaf00807e42fa4
https://doi.org/10.1109/ultsym.2017.8092659
https://doi.org/10.1109/ultsym.2017.8092659
Autor:
Toshiyuki Fuyutsume, Yuichi Takamine, Tsutomu Takai, Hideki Iwamoto, Masahiro Hiramoto, Takanori Toi, Masayoshi Koshino, Takeshi Nakao
Publikováno v:
2017 IEEE International Ultrasonics Symposium (IUS).
Various characteristics for RF filters in mobile terminals are required corresponding to expansion of mobile terminals. I.H.P. SAW (Incredible High-performance SAW) with high Q and temperature stability has been developed to resolve these challenges.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::674f4ac4a5f9921c3b3bd0bf7a277822
https://doi.org/10.1109/ultsym.2017.8091876
https://doi.org/10.1109/ultsym.2017.8091876
Autor:
Tsutomu, Takai, Hideki, Iwamoto, Yuichi, Takamine, Hisashi, Yamazaki, Toshiyuki, Fuyutsume, Haruki, Kyoya, Takeshi, Nakao, Hajime, Kando, Masahiro, Hiramoto, Takanori, Toi, Masayoshi, Koshino, Norio, Nakajima
Publikováno v:
IEEE transactions on ultrasonics, ferroelectrics, and frequency control. 64(9)
To develop the high-performance filters and duplexers required for recent long-term evolution frequency bands in mobile handsets, a surface acoustic wave (SAW) resonator is needed that has a higher quality (Q) and a lower temperature coefficient of f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::7140a8d4ed7f6b595fc305d54fbdca71
https://pubmed.ncbi.nlm.nih.gov/28809680
https://pubmed.ncbi.nlm.nih.gov/28809680
Publikováno v:
2017 IEEE International Meeting for Future of Electron Devices, Kansai (IMFEDK).
High Q and low TCF are elemental characteristics for SAW resonator, in order to realize high performance filters and duplexers for new LTE frequency bands. Authors have focused on the acoustic energy confinement in vicinity of substrate surface. A no
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::45cefa5ab0784970ce44b6f93a07a875
https://doi.org/10.1109/imfedk.2017.7998063
https://doi.org/10.1109/imfedk.2017.7998063
Autor:
Norio Nakajima, Takanori Toi, Haruki Kyoya, Masahiro Hiramoto, Tsutomu Takai, Masayoshi Koshino, Hideki Iwamoto, Yuichi Takamine, Toshiyuki Fuyutsume, Takeshi Nakao, Hajime Kando, Hisashi Yamazaki
Publikováno v:
2016 IEEE International Ultrasonics Symposium (IUS).
High Q and low TCF are elemental characteristics for SAW resonator, in order to realize high performance filters and duplexers coping with new LTE frequency bands. Authors focus on the acoustic energy confinement in SAW propagation surface and electr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cbd9970c38a23f666bf231095c5cfbcf
https://doi.org/10.1109/ultsym.2016.7728455
https://doi.org/10.1109/ultsym.2016.7728455