Committee |
Date Time |
Place |
Paper Title / Authors |
Abstract |
Paper # |
EA, US (Joint) |
2023-12-22 13:00 |
Fukuoka |
|
[Poster Presentation]
Double mode type BAW filter based on ScAlN multilayers SMR using stacked electrodes Saneyuki Shibata, Takahiko Yanagitani (Waseda Univ.) US2023-56 |
Surface acoustic wave (SAW) filters, which use surface acoustic waves, and bulk acoustic wave (BAW) filters, which use b... [more] |
US2023-56 pp.1-6 |
EA, US (Joint) |
2023-12-22 13:00 |
Fukuoka |
|
[Poster Presentation]
c-Axis tilted epitaxial ScAlN self-supporting thin film resonators with epitaxial ZnO sacrificial layer Shiori Kobayashi, Takahiko Yanagitani (Waseda Univ.) US2023-59 |
Piezoelectric thin films with high shear mode electromechanical coupling coefficient k´352 are attractive to improve S/N... [more] |
US2023-59 pp.18-23 |
EA, US (Joint) |
2023-12-22 13:00 |
Fukuoka |
|
[Poster Presentation]
Fabrication of epitaxial piezoelectric layer/acoustic Bragg reflector structure by etching of epitaxial sacrificial layer Satoshi Tokai, Takahiko Yanagitani (Waseda Univ.) US2023-60 |
Q factor and power durability are expected to be improve d by using s ingle crystalline piezoelectric thin films in BAW ... [more] |
US2023-60 pp.24-29 |
EA, US (Joint) |
2023-12-22 15:20 |
Fukuoka |
|
[Poster Presentation]
Electromechanical coupling coefficient hysteresis curve of free-standing PbTiO3 epitaxial thin film resonators Sota Kuninobu, Takahiko Yanagitani (Waseda Univ.) US2023-62 |
[more] |
US2023-62 pp.35-40 |
EA, US (Joint) |
2023-12-22 15:20 |
Fukuoka |
|
[Poster Presentation]
Detection of biomaterial interaction by ultrasonic reflectometry in the UHF range Ayane Mogi, Takahiko Yanagitani (Waseda Univ.) US2023-63 |
QCM (quartz crystal microbalance) is extensively used for biomolecules sensing. However, it is not clear that whether t... [more] |
US2023-63 pp.41-46 |
EA, US (Joint) |
2023-12-22 15:20 |
Fukuoka |
|
[Poster Presentation]
SMR-type piezoelectric transformer using shear mode c-axis zigzag ScAlN multilayer Kazutaka Siraiwa (Waseda Univ.), Takahiko Yanagitani (Waseda univ.) US2023-64 |
RF signal can be converted to DC signal using an antenna and diode (rectenna). When distance of wireless transfer is lon... [more] |
US2023-64 pp.47-52 |
EA, US (Joint) |
2023-12-22 15:20 |
Fukuoka |
|
[Poster Presentation]
Large area growth of c-axis tilted Sc0.4Al0.6N thin films using planar sputtering with rectangular cathode Naoki Ishii, Yhoho Shimano, Takahiko Yanagitani (Waseda Univ.) US2023-65 |
c-axis normal ScAlN thin films with Sc concentration exceeding 40% possess high thickness extensional mode electromechan... [more] |
US2023-65 pp.53-58 |
US |
2023-11-27 10:50 |
Shizuoka |
Shizuoka University |
High power characteristics of nitride multilayered piezoelectric thin films for RF filters Saneyuki Shibata, Takahiko Yanagitani (Waseda Univ.) US2023-45 |
[more] |
US2023-45 pp.11-16 |
US |
2023-11-27 11:15 |
Shizuoka |
Shizuoka University |
High quasi-shear mode electromechanical coupling coefficients of c-axis tilted epitaxial PbTiO3 thin films Sota Kuninobu, Takahiko Yanagitani (Waseda Univ.) US2023-46 |
[more] |
US2023-46 pp.17-22 |
US |
2023-11-27 13:45 |
Shizuoka |
Shizuoka University |
Improvement of in-plane orientation and piezoelectricity of c-axis parallel oriented ZnO films and their application to thickness shear-mode resonators
-- Investigation on limiting of particle irradiation to substrate during sputtering deposition -- Naoki Tomiyama, Shinji Takayanagi (Doshisha Univ.), Yanagitani Takahiko (Waseda Univ.) US2023-49 |
ZnO films with the crystalline c-axis parallel to the substrate can excite shear waves and are suitable for thickness-sh... [more] |
US2023-49 pp.34-39 |
US |
2023-11-27 16:10 |
Shizuoka |
Shizuoka University |
30-layer polarization inversion HBAR for acoustic separation of piezoelectric layer and substrate Kazutaka Shiraiwa, Takahiko Yanagitani (Waseda univ) US2023-54 |
There are two types of BAW resonators, FBAR (film bulk acoustic resonator: free standing structure) and SMR (Solidly mou... [more] |
US2023-54 pp.61-66 |
US |
2023-11-27 16:35 |
Shizuoka |
Shizuoka University |
SMR based on epitaxial ScAlN piezoelectric thin films/epitaxial acoustic Bragg reflector Satoshi Tokai, Takahiko Yanagitani (Waseda Univ.) US2023-55 |
Single crystalline piezoelectric thin films possess higher power durability and Q factor than polycrystalline ones. Howe... [more] |
US2023-55 pp.67-72 |
MIKA (3rd) |
2023-10-10 15:35 |
Okinawa |
Okinawa Jichikaikan (Primary: On-site, Secondary: Online) |
[Poster Presentation]
PbTiO3 piezoelectric thin films for shear wave type RF filters Sota Kuninobu, Takahiko Yanagitani (Waseda Univ.) |
[more] |
|
MIKA (3rd) |
2023-10-10 15:35 |
Okinawa |
Okinawa Jichikaikan (Primary: On-site, Secondary: Online) |
[Poster Presentation]
Epitaxial piezoelectric thin film multilayer structure for RF filters Satoshi Tokai, Yanagitani Takahiko (Waseda Univ.) |
Wireless communication devices such as smartphones are equipped with many frequency filters to transmit and receive only... [more] |
|
MIKA (3rd) |
2023-10-11 14:30 |
Okinawa |
Okinawa Jichikaikan (Primary: On-site, Secondary: Online) |
[Poster Presentation]
High power characteristics of nitride multilayered piezoelectric thin films for RF filters Saneyuki Shibata, Takahiko Yanagitani (Waseda Univ.) |
In the 5th generation mobile communication systems (5G), which are currently in widespread use, and in the 6G and beyond... [more] |
|
MIKA (3rd) |
2023-10-11 14:30 |
Okinawa |
Okinawa Jichikaikan (Primary: On-site, Secondary: Online) |
[Poster Presentation]
Multilayer piezoelectric thin-film resonators aimed at RF filters for base stations Kazutaka Shiraiwa, Takahiko Yanagitani (Waseda Univ.) |
Currently, the demand for wireless communications at high-frequency such as 5G and 6G is increasing. Piezoelectric mater... [more] |
|
EST, MW, EMT, OPE, MWPTHz, IEE-EMT [detail] |
2023-07-20 15:15 |
Hokkaido |
Muroran Institute of Technology (Primary: On-site, Secondary: Online) |
Elastic constant tensors cijE of (0001) ScxAl1-xN thin films (x=0-0.63) measured by Brillouin light scattering method Hiroki Uchida (Waseda Univ.), Hayato Ichihashi (Doshisya Univ.), Masashi Suzuki (Yamanashi Univ.), Shinji Takayanagi, Mami Matsukawa (Doshisya Univ.), Takahiko Yanagitani (Waseda Univ.) EMT2023-20 MW2023-38 OPE2023-20 EST2023-20 MWPTHz2023-16 |
Large piezoelectricity and high Q factor in ScAlN film is attractive for RF filter applications. . Elastic constant tens... [more] |
EMT2023-20 MW2023-38 OPE2023-20 EST2023-20 MWPTHz2023-16 pp.61-66 |
EST, MW, EMT, OPE, MWPTHz, IEE-EMT [detail] |
2023-07-20 15:40 |
Hokkaido |
Muroran Institute of Technology (Primary: On-site, Secondary: Online) |
IBAD c-axis parallel ZnO thin films for nonlinear optical device applications Kohei Ekida, Junjun Jia, Takahiko Yanagitani (Waseda Univ.) EMT2023-21 MW2023-39 OPE2023-21 EST2023-21 MWPTHz2023-17 |
Wurtzite crystals (such as ZnO and AlN) are attractive for applications in laser wavelength conversion devices using non... [more] |
EMT2023-21 MW2023-39 OPE2023-21 EST2023-21 MWPTHz2023-17 pp.67-70 |
EST, MW, EMT, OPE, MWPTHz, IEE-EMT [detail] |
2023-07-21 13:25 |
Hokkaido |
Muroran Institute of Technology (Primary: On-site, Secondary: Online) |
Development of new method for evaluating electromechanical coupling coefficient using Mason’s equivalent circuit model simulation Yohkoh Shimano (Waseda Univ.), Kohei Yatabe (Tokyo Univ. of Agri. and Tech.), Takahiko Yanagitani (Waseda Univ.) EMT2023-56 MW2023-74 OPE2023-56 EST2023-56 MWPTHz2023-52 |
The electromechanical coupling coefficient is one of the important parameters for determining the performances of RF fil... [more] |
EMT2023-56 MW2023-74 OPE2023-56 EST2023-56 MWPTHz2023-52 pp.241-242 |
EA, US (Joint) |
2022-12-22 16:50 |
Hiroshima |
Satellite Campus Hiroshima |
[Poster Presentation]
Q factor extraction of ScAlN, ZnO, PZT piezoelectric films without etching substrate Yuki Shimizu (Waseda Univ.), Takahiko Yanagitani (Waseda Univ./JST) US2022-61 |
In recent years, sharp passband is required for RF filters to prevent interference between neighboring bands. The sharpn... [more] |
US2022-61 pp.56-61 |