| IEICE Technical Committee Submission System Conference Schedule |
Online Proceedings [Sign in] Tech. Rep. Archives |
All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| MW | 2020-12-10 16:00 |
Kanagawa | (Primary: On-site, Secondary: Online) |
Experimental evaluation of signal-to-quantization noise power ratio of transversal filter with power amplifier for EPWM transmitter Ryuta Sato, Natuki Utigiri, Taishi Sawayama, Yusuke Koike, Yotaro Umeda, Kyoya Takano (TUS)  MW2020-77 |
In recent years, envelope pulse width modulation has been devised for transmitters in wireless communications to meet ma... [more] | MW2020-77 pp.36-41 |
| MW, EST, EMCJ, PEM, IEE-EMC [detail] | 2020-10-23 17:05 |
Online | Online | Design of High-frequency Class-D Amplifire hayato takahashi, Yoji Isota, Teruo Tobana, Kohei Akimoto (Akita Pref. Univ.), Masashi Kawakami (NITIC) EMCJ2020-50 MW2020-64 EST2020-52 |
Due to the sophistication and diversification of information and communication networks, the communication speed is incr... [more] | EMCJ2020-50 MW2020-64 EST2020-52 pp.139-142 |
| ICD, CPSY, CAS | 2018-12-23 16:10 |
Okinawa | Comparison between Quadrature-modulation EPWM transmitters with a 90° and 180° hybrid in physical models Tomoaki Morita, Yohtraro Umeda (Tokyo Univ. of Science) CAS2018-115 ICD2018-99 CPSY2018-81 |
Quadrature-modulation envelope-pulse-width-modulation (EPWM) transmitter with a 180° (180HYB system) or 90° hybrid (90HY... [more] | CAS2018-115 ICD2018-99 CPSY2018-81 pp.153-158 |
|
| MW | 2018-12-13 15:45 |
Kanagawa | Kanagawa Univ. | Implementation of quadrature-modulation Transmitter for Generating Bi-level EPWM Signal Mizuki Kinoshita, Umeda Yohtaro (Tokyo Univ. of Science) MW2018-124 |
We report a class D power amplifier designed for use at 500 MHz. The power amplifier is fabricated as an integrated circ... [more] | MW2018-124 pp.61-65 |
| MW, EMCJ, EST, IEE-EMC [detail] | 2017-10-20 10:25 |
Akita | Yupopo | A Quadrature-modulation EPWM Transmitter That Uses Co-phase Sine Wave Carriers for I/Q Channel and a 90° Hybrid as a Signal Combiner Tomoaki Morita, Ryo Sakai, Yohtaro Umeda (Tokyo Univ. of Science), Yusuke Kozawa (Ibaraki Univ.) EMCJ2017-45 MW2017-97 EST2017-60 |
Quadrature-modulation (QM) envelope-pulse-width modulation (EPWM) transmitter with a 180° hybrid as a power combiner has... [more] | EMCJ2017-45 MW2017-97 EST2017-60 pp.105-110 |
| MW, ICD | 2017-03-03 09:25 |
Okayama | Okayama Prefectural Univ. | Quadrature-modulation Envelope-pulse-width-modulation Transmission System Using Quadrature Polarized Waves Ryo Sakai, Yohtaro Umeda, Yusuke Kozawa (Tokyo Univ. of Science) MW2016-204 ICD2016-134 |
This paper presents quantitative evaluation of power efficiency decrese by not satisfying the zero current switching (ZC... [more] | MW2016-204 ICD2016-134 pp.89-94 |
| EE, WPT, IEE-SPC (Joint) [detail] |
2015-07-07 14:30 |
Kyoto | Automatic Impedance Matching Technique by Using Air-Variable Capacitor for 6.78MHz-Band WPT System Teruhiko Yamamoto, Keisuke Mikami (Ryukoku Univ.), Tetsuya Ishida (Wave Technology), Toshio Ishizaki (Ryukoku Univ.) WPT2015-42 |
For practical application of WPT, it is necessary to reduce a mismatch loss when relative positions of resonators are ch... [more] | WPT2015-42 pp.37-42 |
|
| WPT, MW | 2015-04-17 09:55 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Study of distance-insensitive electric field coupling resonant wireless power transfer Ryuichi Namba, Yohtaro Umeda, Yusuke Kozawa (Tokyo Univ. of Science) WPT2015-9 MW2015-9 |
In recent years, resonant wireless power transmission technology for supplying electric power with high efficiency in el... [more] | WPT2015-9 MW2015-9 pp.45-50 |
| MW | 2014-11-21 10:55 |
Nagasaki | Nagasaki Univ. | Quadrature-modulation Transmitter with Tri-level Delta-sigma Modulation for Generating Bi-level EPWM Signal Takashi Noda, Wataru Someya, Yoshiharu Iikura, Yohtaro Umeda, Yusuke Kozawa (Tokyo Univ. of Science) MW2014-139 |
This paper presents a quadrature-modulation (QM) envelope-pulse-width-modulation (EPWM) transmitter with delta-sigma tri... [more] | MW2014-139 pp.83-88 |
| MW | 2014-11-21 11:20 |
Nagasaki | Nagasaki Univ. | A Polar-modulation EPWM Transmitter with a Class-D Amplifier for OFDM Transmission Yoshiharu Iikura, Yohtaro Umeda, Yusuke Kozawa (Tokyo Univ. of Sience) MW2014-140 |
Power amplifiers for wireless communication systems demand high power efficiency and linearity. Of the available types o... [more] | MW2014-140 pp.89-94 |
| EE, WPT (Joint) |
2014-11-18 10:00 |
Kyoto | Doshisha University | A Novel ZVS Class-D Direct-Current-Resonance Wireless Power Transfer with GaN FETs Operated in 6.78MHz Tatsuya Hosotani (Murata Manufacturing) WPT2014-50 |
A novel ZVS class-D direct-current-resonance wireless power transfer with GaN FETs operated in 6.78MHz is proposed. A di... [more] | WPT2014-50 pp.1-6 |
| MW | 2014-03-05 15:25 |
Ehime | Ehime University | Modulation Accuracy of a Polar-modulation EPWM Transmitter with a NMOS-type Class-D Power Amplifier Yoshiharu Iikura, Yohtaro Umeda, Yusuke Kozawa (Tokyo Univ. of Science) MW2013-221 |
Switching-mode power amplifiers for wireless communication systems demand high power efficiency and linearity. Of the av... [more] | MW2013-221 pp.139-144 |
| RCS, NS (Joint) |
2010-07-15 10:30 |
Hokkaido | Abashiri Public Auditorium | Performance Evaluation of Gaussian Filtered Constant Envelope Modulation Systems with a Low-Resolution ADC Kohei Kotera, Osamu Muta, Hiroshi Furukawa (Kyushu Univ.) RCS2010-51 |
To a small size and power-efficient relay station for wireless backhaul networks, the authors have proposed a multi-in... [more] |
RCS2010-51 pp.19-24 |
| IE, SIP, ICD, IPSJ-SLDM | 2004-10-22 14:15 |
Yamagata | A class-D amplifier using a spectrum shaping technique Akira Yasuda (Hosei Univ.), Takashi Kimura, Koichiro Ochiai, Toshihiko Hamasaki (TI Japan) |
In this paper, we propose a new class-D amplifier with a lower-frequency reference signal by using a spectrum shap-ing t... [more] | SIP2004-98 ICD2004-130 IE2004-74 pp.55-60 |
|
[Return to Top Page]