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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| SDM | 2024-01-31 13:05 |
Tokyo | KIT Toranomon Graduate School (Primary: On-site, Secondary: Online) |
[Invited Talk]
Polarization Engineering in AlSiO/p-type GaN MOSFETs Using AlN Interlayers Formed by Plasma-Enhanced Atomic Layer Deposition Kenji Ito, Tetsuo Narita, Hiroko Iguchi, Shiro Iwasaki, Daigo Kikuta (Toyota Central R&D), Emi Kano, Nobuyuki Ikarashi, Kazuyoshi Tomita, Masahiro Horita, Jun Suda (Nagoya Univ.)  SDM2023-75 |
Polarization engineering by AlN interlayers (AlN-ILs) deposited via plasma-enhanced atomic layer deposition was demonstr... [more] | SDM2023-75 pp.5-8 |
| 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 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 |
|
| LQE, ED, CPM | 2023-11-30 13:05 |
Shizuoka | AlGaInN/GaN highhigh-electron mobility transistors with a thin unintentionally doped GaN channel and an AlN back barrier formed using a single single-crystal AlN substrate Tomoyuki Kawaide, Yoshinobu Kometani, Sakura Tanaka, Takashi Egawa, Makoto Miyoshi (Nagoya Inst. Tech) ED2023-14 CPM2023-56 LQE2023-54 |
A high-electron-mobility transistor (HEMT) structure with a strain-engineered quaternary AlGaInN barrier layer, a thin u... [more] | ED2023-14 CPM2023-56 LQE2023-54 pp.1-5 |
|
| LQE, ED, CPM | 2023-12-01 16:15 |
Shizuoka | The properties of UV-B laser diodes on AlN nanopillars by using wet etching method Yoshinori Imoto, Ryosuke Kondo, Ryoya Yamada, Koki Hattori, Toma Nishibayashi, , Sho Iwayama, Satoshi Kamiyama, Tetsuya Takeuchi, Motoaki Iwaya (Meijo Univ), Hideto Miyake (Mie Univ) ED2023-36 CPM2023-78 LQE2023-76 |
Our groups reported that we could fabricate high quality lattice relaxed AlGaN grown on periodic AlN nanopillars.and thr... [more] | ED2023-36 CPM2023-78 LQE2023-76 pp.98-101 |
|
| 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) |
2023-10-11 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 |
| CPM, ED, SDM | 2023-05-19 17:20 |
Aichi | Nagoya Institute of Technology (Primary: On-site, Secondary: Online) |
AlN film by reactive sputtering as a stressor for Ge photonic devices on Si Jose A. Piedra-Lorenzana, Shohei Kaneko, Takaaki Fukushima, Keisuke Yamane (Toyohashi Univ. Tec.), Junichi Fujikata (Tokushima Univ.), Yasuhiko Ishikawa (Toyohashi Univ. Tec.) ED2023-9 CPM2023-9 SDM2023-26 |
AlN deposited by reactive sputtering is studied as an external stressor for controlling the operating wavelength of near... [more] | ED2023-9 CPM2023-9 SDM2023-26 pp.36-39 |
| MW | 2023-05-19 10:50 |
Kyoto | Ritsumeikan University (Primary: On-site, Secondary: Online) |
5.8 GHz band 10 W rectenna on the aluminum nitride antenna for thermal dispersion Naoki Sakai, Naoki Furutani, Yuya Hirose, Kaito Uchiyama, Fumiya Komatsu, Kenji Itoh (KIT) MW2023-15 |
This paper presents the 5.8 GHz band 10W rectenna with GaAs E-pHEMT gated anode diode (GAD) on the aluminum nitride (AlN... [more] | MW2023-15 pp.33-37 |
| 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 |
| EA, US (Joint) |
2022-12-22 16:50 |
Hiroshima | Satellite Campus Hiroshima | [Poster Presentation]
Characteristics of YbGaN and YbAlN epitaxial thin film resonators Song Li, Junjun Jia, Takahiko Yanagitani (Waseda Univ.) US2022-64 |
Bulk acoustic wave (BAW) resonators based on AlN or GaN piezoelectric thin films are suitable for GHz frequency filters ... [more] | US2022-64 pp.74-79 |
| EA, US (Joint) |
2022-12-22 16:50 |
Hiroshima | Satellite Campus Hiroshima | [Poster Presentation]
A method for evaluating acoustic Bragg reflector by GHz pulse echo technique with SiO2 delay line Keita Kondo, Naoki Ishii, Motoshi Suzuki (Waseda Univ.), Takahiko Yanagitani (Waseda Univ. /JST) US2022-65 |
Experimental data of the sole Bragg reflector is difficult to be measured. This is because the property of a piezoelectr... [more] | US2022-65 pp.80-85 |
| NS, ICM, CQ, NV (Joint) |
2022-11-24 14:55 |
Fukuoka | Humanities and Social Sciences Center, Fukuoka Univ. + Online (Primary: On-site, Secondary: Online) |
The Automation of system design and configuration in Virtualized Core Network Yosuke Kono, Syunya Tanaka, Nachi Itou, Mitsuhiro Maeda, Kenji Nishimura, Yasushi Kondou (DOCOMO Technology) ICM2022-23 |
The conventional construction for Mobile Network is designed system and set up by manual labour. So We have problems co... [more] |
ICM2022-23 pp.7-12 |
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