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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| OME | 2023-11-01 13:55 |
Hyogo | JIBASAN Bidg. (Himeji) | Effect of pulse width modulation of illumination light on indoor photovoltaics Kazuya Tada (Univ. Hyogo)  OME2023-44 |
When we target the indoor use of solar cells, we have to consider the characteristics of indoor illumination light. Espe... [more] | OME2023-44 pp.7-11 |
| NLP, CAS | 2023-10-06 14:50 |
Gifu | Work plaza Gifu | A Design and Evaluation of the Up/Down Counter Type PWM Adder Using the Subthreshold Region Gaku Abe, Andrino Robles Roberto, Takumi Nihei, Tomochika Harada (Yamagata Univ.) CAS2023-42 NLP2023-41 |
This paper presents the design and evaluation of a PWM adder circuit using up/down counters operating in the subthreshol... [more] | CAS2023-42 NLP2023-41 pp.53-57 |
| EE | 2023-01-20 14:40 |
Fukuoka | Kyushu Institute of Technology (Primary: On-site, Secondary: Online) |
Analysis and Design on a Receiver-side PWM-based Load-Independent ZVS Class-E2 Wireless Power Transfer Shoma Shimizu, Tomokazu Mishima (Kobe Univ.) EE2022-51 |
A high efficiency and low-profile high frequency,(HF) power converter is essential for a magnetically resonant wireless ... [more] | EE2022-51 pp.139-144 |
| 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 |
| ICD, CPSY, CAS | 2018-12-21 13:30 |
Okinawa | Power-amplifier-inserted Transversal Filter that Recovers Quantization Noise Power by CMOS Rectifier Yuto Tanaka, Yohtaro Umeda, Kyoya Takano (Tokyo University of Science) CAS2018-78 ICD2018-62 CPSY2018-44 |
In this paper, we aim to improve power efficiency by using a CMOS rectifier for power-amplifier-inserted transversal fil... [more] | CAS2018-78 ICD2018-62 CPSY2018-44 pp.1-5 |
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| 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 |
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| 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] | 2017-10-19 09:40 |
Akita | Yupopo | Comparison of Power Combining Methods in Power-amplifier-inserted Transversal Filter for EPWM Transmitters Yuto Tanaka, Yohtaro Umeda (TUS), Yusuke Kozawa (Ibaraki Univ.) EMCJ2017-32 MW2017-84 EST2017-47 |
This paper compares power-amplifier-inserted transversal filter (PAITF) with 180º hybrids and T-junctions for envelope p... [more] | EMCJ2017-32 MW2017-84 EST2017-47 pp.11-15 |
| 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 |
| SDM, ICD, ITE-IST [detail] | 2017-08-02 13:45 |
Hokkaido | Hokkaido-Univ. Multimedia Education Bldg. | Multi-carrier Transmission Characteristics of All-Digital Low-IF Transmitter Using Weber-Type Image Suppression Method Takumi Kamo, Yohtaro Umeda (Tokyo Univ. of Science), Yusuke Kozawa (Ibaraki Univ.) SDM2017-47 ICD2017-35 |
In this paper, multicarrier transmission is performed by using a bandpass type (BP) ΔΣ modulator in an orthogonal modula... [more] | SDM2017-47 ICD2017-35 pp.117-122 |
| SDM, ICD, ITE-IST [detail] | 2017-08-02 14:10 |
Hokkaido | Hokkaido-Univ. Multimedia Education Bldg. | A Quadrature-modulation EPWM Transmitter with Parallel-Output MASH Delta-Sigma Modulator Takumi Yamamoto, Yohtaro Umeda (Tokyo Univ. of Science), Yusuke Kozawa (Ibaraki Univ.) SDM2017-48 ICD2017-36 |
In this paper, Multi StAge Noise Shaping (MASH) architecture is employed to realize high noise reduction capability by n... [more] | SDM2017-48 ICD2017-36 pp.123-128 |
| 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 |
| MW, ICD | 2017-03-03 10:50 |
Okayama | Okayama Prefectural Univ. | Speeding up using Parallel-Serial conversion in FPGA implementation of quadrature modulation Envelope Pulse Width Modulation Transmitter Kouhei Nagasawa, Yohtaro Umeda, Yusuke Kozawa (Tokyo Univ. of Science) MW2016-207 ICD2016-137 |
This paper presents a new configuration using a serializer on quadrature-modulation (QM) envelope-pulse-width-modulation... [more] | MW2016-207 ICD2016-137 pp.107-112 |
| LQE, OPE, OCS | 2016-10-28 09:40 |
Miyazaki | Miyazaki Citizen's Plaza | Driving circuit for 32X32 Optical Matrix Switch using High-resolution Pulse-width Modulation Hiroyuki Matsuura, Satoshi Suda, Ken Tanizawa, Keijiro Suzuki, kazuhiro Ikeda, Hitoshi Kawashima, Shu Namiki (AIST) OCS2016-46 OPE2016-87 LQE2016-62 |
A silicon photonic 32X32 strictly non-blocking matrix switch utilizing Mach-Zehnder (MZ) interferometers controlled by t... [more] | OCS2016-46 OPE2016-87 LQE2016-62 pp.65-70 |
| OPE, OCS, OFT (Joint) [detail] |
2015-02-20 15:15 |
Kagoshima | Optical Eigenvalue Modulation and Demodulation Scheme based on Pulse Width Modulation Yuki Matsuda, Akihiro Maruta (Osaka Univ.) OCS2014-124 OPE2014-233 |
(Advance abstract in Japanese is available) [more] | OCS2014-124 OPE2014-233 pp.121-126(OCS), pp.169-174(OPE) |
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| 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 |
| EID, ITE-IDY, ITE-HI, ITE-3DMT, IEE-OQD, SID-JC [detail] | 2014-10-15 13:15 |
Tokyo | Kikai-Shinko-Kaikan Bldg | Pulse-Width Modulation with Current Uniformization for AM-OLED
-- Reduction Effect Confirmation of Pixel-to-Pixel Brightness Deviation and Brightness Degradation -- Mutsumi Kimura, Tomoya Nishiyori, Daisuke Suzuki, Masamichi Koike, Shigeki Sawamura, Masakazu Kato (Ryukoku Univ.) EID2014-8 |
Recently, AM-OLEDs have been researched and developed as ultimate FPDs with advantages such as high image quality, high ... [more] | EID2014-8 pp.1-4 |
| EA | 2014-03-28 17:15 |
Tokyo | NHK Science & Technology Research Labs. | A study of directional speaker using a digitally direct-driven system Takemichi Ishikawa, Syuma Yokoyama, dai Takahashi, Satochi Saikatu, Akira Yasuda (Hosei Univ.) EA2013-127 |
The paper proposes a novel directive control method with amplitude-phase control for a beam forming speaker by using a d... [more] | EA2013-127 pp.43-48 |
| 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 |
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