Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Tetsuya Tsurunari"'
Publikováno v:
2021 IEEE International Ultrasonics Symposium (IUS).
A TC-SAW (Temperature Compensated Surface Acoustic Wave) by LiNbO 3 covered with a SiO 2 film structure is proposed as a temperature compensation method. The TC-SAW with SiO 2 /LiNbO 3 structure has satisfactory Q and TCF and moderate k2 eff . Howeve
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::273aae86ecaea03292ef2246a359507c
https://doi.org/10.1109/ius52206.2021.9593595
https://doi.org/10.1109/ius52206.2021.9593595
Autor:
Yukio Iwasaki, Masatsune Yamaguchi, Ken Matsunami, Hiroyuki Nakamura, Ken-ya Hashimoto, Hidekazu Nakanishi, Tetsuya Tsurunari
Publikováno v:
Japanese Journal of Applied Physics. 47:4052-4055
In this paper, we describe the development of a miniature surface acoustic wave (SAW) duplexer for Band I in the standard of the Third-Generation Partnership Project (3GPP) at a 2 GHz band. We employed a shear-horizontal SAW on a SiO2 overlay/thick A
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::508d30fc9f85473d1ee1d88865339e32
https://doi.org/10.1143/jjap.47.4052
https://doi.org/10.1143/jjap.47.4052
Autor:
Hiroyuki Nakamura, Yosuke Hamaoka, Hidekazu Nakanishi, Joji Fujiwara, Rei Goto, Tetsuya Tsurunari
Publikováno v:
2012 IEEE International Ultrasonics Symposium.
SH mode on SiO2/Al/LiNbO3 structure is studied because of their sufficient electromechanical coupling factor (K2) and good temperature coefficient of frequency (TCF). Authors proposed the suppression method of the spurious response of the Rayleigh mo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4c88c0f94e6e591e6983ae1e8e95f3c5
https://doi.org/10.1109/ultsym.2012.0199
https://doi.org/10.1109/ultsym.2012.0199
Publikováno v:
2012 IEEE International Ultrasonics Symposium.
This paper proposes a new structure to reduce the transverse SAW leakage for the SAW resonator on a 42° YX-LiTaO3 substrate. The leakage occurs from the inter-digital region toward the bus-bur region in the SAW resonators. The new structure has the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b04b465ef9399124b7ff2248a6e46375
https://doi.org/10.1109/ultsym.2012.0311
https://doi.org/10.1109/ultsym.2012.0311
Autor:
Yosuke Hamaoka, Joji Fujiwara, Tetsuya Tsurunari, Hidekazu Nakanishi, Hiroyuki Nakamura, Rei Goto
Publikováno v:
2010 IEEE MTT-S International Microwave Symposium.
This paper describes the SiO 2 /Al/LiNbO 3 structure for the SAW duplexer. Although this structure has large electromechanical coupling coefficient, it also supports unwanted spurious responses. They are categorized into two types of the Rayleigh-mod
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::60b3705fc098bddf54a07ffef3af4d13
https://doi.org/10.1109/mwsym.2010.5518138
https://doi.org/10.1109/mwsym.2010.5518138
Autor:
Yukio Iwasaki, Hidekazu Nakanishi, Ken Matsunami, Masatsune Yamaguchi, Tetsuya Tsurunari, Ken-ya Hashimoto, Hiroyuki Nakamura
Publikováno v:
2008 IEEE Ultrasonics Symposium.
The wideband CDMA (W-CDMA) system at 2 GHz has a wide duplex gap between transmitting (Tx) and receiving (Rx) bands. When developing a small-sized SAW duplexer for this application, one needs a substrate with a large electromechanical coupling factor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::98d594530ca7aa51e581f72d0a02a79d
https://doi.org/10.1109/ultsym.2008.0142
https://doi.org/10.1109/ultsym.2008.0142
Publikováno v:
2007 IEEE Ultrasonics Symposium Proceedings.
A small-sized SAW duplexer for Wideband CDMA (W-CDMA) application at 2 GHz band has been developed. The W-CDMA application has a wide duplex gap between transmitting (Tx) band and receiving (Rx) band. To realize a small-sized SAW duplexer, a substrat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f143af45ce0d2f54f80fedefc26081ea
https://doi.org/10.1109/ultsym.2007.131
https://doi.org/10.1109/ultsym.2007.131
Autor:
Hidekazu Nakanishi, Rei Goto, Hiroyuki Nakamura, Tetsuya Tsurunari, Joji Fujiwara, Yosuke Hamaoka
Publikováno v:
Japanese Journal of Applied Physics. 52:07HD12
The shear horizontal (SH) mode on the SiO2/Al/LiNbO3 structure is studied because of its sufficient electromechanical coupling factor (K 2) and good temperature coefficient of frequency (TCF). The authors proposed a method of suppressing the spurious
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b9e37b7af65d8aab4f4025f7b6f764a8
https://doi.org/10.7567/jjap.52.07hd12
https://doi.org/10.7567/jjap.52.07hd12
Autor:
Hidekazu Nakanishi, Hiroyuki Nakamura, Tetsuya Tsurunari, Joji Fujiwara, Yosuke Hamaoka, Ken-ya Hashimoto
Publikováno v:
Japanese Journal of Applied Physics. 51:07GC15
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f07d2e4fd62b4b7bbf5fb20d51d76428
https://doi.org/10.7567/jjap.51.07gc15
https://doi.org/10.7567/jjap.51.07gc15
Autor:
Hidekazu Nakanishi, Joji Fujiwara, Tetsuya Tsurunari, Hiroyuki Nakamura, Ken-ya Hashimoto, Yosuke Hamaoka
Publikováno v:
Japanese Journal of Applied Physics. 51:07GC15
In this paper, we describe a suppression technique of transverse-mode spurious responses for a surface acoustic wave (SAW) resonator with a near zero temperature coefficient of frequency (TCF) on a SiO2/Al/LiNbO3 structure. We investigated the thinni
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::129123926de30a2657f351aa99cde8c5
https://doi.org/10.1143/jjap.51.07gc15
https://doi.org/10.1143/jjap.51.07gc15