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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| MW | 2022-11-15 10:50 |
Nagasaki | Fukue-Bunka-Kaikan (Primary: On-site, Secondary: Online) |
Continuous Class-F/Inverse-Class-F 2-GHz-Band GaN-HEMT Power Amplifiers Using 1-Port CRLH Transmission Lines Eri Tsuji, Soshi Aonuma, Shinichi Tanaka (Shibaura Inst. of Tech.)  MW2022-109 |
Highly efficient amplifiers capable of continuously processing harmonics over a wide bandwidth are attracting attention ... [more] | MW2022-109 pp.1-6 |
| MW | 2022-11-15 11:15 |
Nagasaki | Fukue-Bunka-Kaikan (Primary: On-site, Secondary: Online) |
Bandwidth Improvement of Power Amplifier Using Dispersion Engineering of 1-Port CRLH Transmission Line Ryota Mogami, Eri Tsuji, Shinichi Tanaka (Shibaura Inst. of Tech.) MW2022-110 |
In our previous paper, we reported a power amplifier using a 1-port CRLH transmission line (TL) as a harmonic tuning cir... [more] | MW2022-110 pp.7-12 |
| MW | 2020-11-19 13:05 |
Online | Online | Harmonic tuning circuit using 1-port CRLH transmission line and its application to power amplifiers Naoaki Iisaka, Shinichi Tanaka (SIT) MW2020-65 |
With the spread of next-generation mobile communication systems, high efficiency and miniaturization of base station amp... [more] | MW2020-65 pp.1-5 |
| MW | 2018-11-15 10:00 |
Nagasaki | Fukue Cultural Hall | 2-GHz-Band GaN HEMT Class-F Power Amplifiers Using CRLH-Transmission-Line-Stub Dual-Use Circuits for Harmonic Control and DC Biasing Tomoya Oda, Kento Saiki, Shinichi Tanaka (Shibaura Inst. of Tech.) MW2018-92 |
The next generation mobile communication systems impose challenging performance, size and cost requirements on the power... [more] | MW2018-92 pp.1-6 |
| 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 |
| WPT, MW | 2015-04-16 15:25 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Design of a 60GHz InGaAs HEMT class-F power amplifier with reactive negative feedback Kunihiko Watanabe, Yohtaro Umeda (Tokyo Univ. of Science), Tomohiro Yoshida, Tetsuya Suemitsu (Tohoku Univ.) WPT2015-4 MW2015-4 |
In this paper, InGaAs HEMT 60GHz Class-F power amplifier (PA) with reactive negative feedback is designed and simulated.... [more] | WPT2015-4 MW2015-4 pp.15-19 |
| ED | 2014-12-22 14:35 |
Miyagi | Output power performance of InGaAs/InAlAs HEMT at 90-GHz band Issei Watanabe (NICT), Akira Endoh (NICT/Fujistu Lab.), Akifumi Kasamatsu (NICT), Takashi Mimura (NICT/Fujistu Lab.) ED2014-101 |
InGaAs/InAlAs high electron mobility transistors (HEMTs) are the most promising electron devices not only for future ult... [more] | ED2014-101 pp.15-19 |
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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 |
| AP, MW (Joint) |
2014-09-19 14:25 |
Tokyo | Tokyo Institute of Technology, Ookayama Campus | Improvement of Power Added Efficiency of Power Amplifier with Adaptive Matching Circuit Hidetoshi Makimura, Takashi Yanagi, Toru Fukasawa, Shintaro Shinjo, Hiroaki Miyashita (Mitsubishi Electric) AP2014-103 |
This paper presents a novel adaptive matching circuit which improves power added efficiency of power amplifiers embedded... [more] | AP2014-103 pp.55-60 |
| CAS, NLP | 2011-10-21 10:15 |
Shizuoka | Shizuoka Univ. | Simulation Investigation of a 60-GHz Differential Amplifier Design Willy Hioe (Hitachi) CAS2011-51 NLP2011-78 |
Several differential amplifiers for 60-GHz applications reported since 2008 had superior PAE performances and small chip... [more] | CAS2011-51 NLP2011-78 pp.107-111 |
| RCS, AN, MoNA, SR (Joint) |
2010-03-05 13:40 |
Kanagawa | YRP | Improvement of Power Added Efficiency by PAPR Reductiuon Technique for MIMO-OFDM Systems Yosuke Kanno, Satoshi Suyama, Hiroshi Suzuki, Kazuhiko Fukawa (Tokyo Inst. of Tech.) RCS2009-331 |
In MIMO-OFDM mobile communication systems, this report clarifies a relation between (i) an improvement of peak to averag... [more] | RCS2009-331 pp.433-438 |
| RCS, AN, MoNA, SR (Joint) |
2009-03-04 13:00 |
Kanagawa | YRP | Experimental Study on Efficiency of EER Transmitter Using Envelope PWM Satoshi Tsukamoto, Takayuki Umaba, Keizo Inagaki, Makoto Taromaru (ATR) SR2008-88 |
Improving efficiency of radio power amplifier has been an important issue for portable radio terminals since it directly... [more] | SR2008-88 pp.1-6 |
| EMCJ, MW | 2007-10-26 09:35 |
Miyagi | Tohoku University | A basic study on EER transmitter with burst-width envelope modulation based on triangle-wave PWM Toshiro Kodera, Nobuhiko Ando, Makoto Taromaru (ATR) EMCJ2007-67 MW2007-114 |
The improvement of efficiency on power amplifiers (PAs) has been a major assignment from dc to microwave region. The c... [more] |
EMCJ2007-67 MW2007-114 pp.77-82 |
| ICD | 2005-05-27 13:00 |
Hyogo | Kobe Univ. | A Single-Chip Si-LDMOS Power Amplifier for GSM Toshihiko Shimizu, Yoshikuni Matsunaga, Satoshi Sakurai (Renesas), Isao Yoshida (ATN), Masao Hotta (Musashi Inst. of Tech.) |
A single-chip Si-LDMOS high-power amplifier with matching circuits and all control blocks for quad-band GSM handset phon... [more] | ICD2005-32 pp.25-29 |
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