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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| 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 |
| EST, MW, EMCJ, IEE-EMC [detail] | 2018-10-18 16:35 |
Aomori | Hachinohe Chamber of Commerce and Industry(Hachinohe city, Aomori) | GaN HEMT Darlington Power Amplifier with Individual Bias Adjustment for High-Efficiency and Low-Distortion Characteristics Atsushi Kitamura, Yoichiro Takayama, Ryo Ishikawa, Kazuhiko Honjo (UEC) EMCJ2018-45 MW2018-81 EST2018-67 |
Multi-transistor configurations are widely applied for improving the performance of transistor amplifiers. In the multi-... [more] | EMCJ2018-45 MW2018-81 EST2018-67 pp.71-75 |
| AP, MW (Joint) |
2018-09-21 10:20 |
Tokyo | Tokyo Tech | A study of statistical property of intermodulation distortion components generating by power amplifier Yasunori Suzuki, Hiroshi OKazaki (NTT DOCOMO) MW2018-64 |
This paper presents a statistical property of intermodulation distortion components generating by power amplifier when i... [more] | MW2018-64 pp.29-34 |
| EST, MW, OPE, MWP, EMT, IEE-EMT, THz [detail] | 2018-07-19 16:15 |
Hokkaido | A Formulation of Gain Margin and Required Power for Closed-Loop Active Load-Pull Systems Kentaro Kawabe, Toshio Ishizaki (Ryukoku Univ.) EMT2018-32 MW2018-47 OPE2018-35 EST2018-30 MWP2018-31 |
As a design method for microwave power amplifier, passive load-pull method for obtaining the optimum load impedance is w... [more] | EMT2018-32 MW2018-47 OPE2018-35 EST2018-30 MWP2018-31 pp.137-142 |
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| CS, CAS | 2018-03-13 14:30 |
Fukuoka | Nishijin Plaza, Kyushu University | Distortion analysis of power amplifiers for mobile applications Satoshi Tanaka (Murata) CAS2017-156 CS2017-110 |
In these days, the development for 5th generation mobile phone becomes highly activated. In 5G mobile phone system, maxi... [more] | CAS2017-156 CS2017-110 pp.129-134 |
| MW | 2017-12-19 10:30 |
Tokyo | 4.5-/4.9-GHz-Band Tunable GaN HEMT High Efficiency Power Amplifier with PIN Diode Switches. Kazuki Mashimo, Ryo Ishikawa, Kazuhiko Honjou (Univ. of Electro-Communications) MW2017-142 |
For the next generation wireless communication systems, 4.5-/4.9-GHz band tunable GaN HEMT high efficiency power amplifi... [more] | MW2017-142 pp.1-6 |
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| MW | 2017-11-09 10:40 |
Okinawa | Miyakojima Marin Terminal Bldg. | Basic study on Open- and Closed-Loop Active Load-Pull System Kentaro Kawabe, Gaku Nishio, Toshio Ishizaki (Ryukoku Univ.) MW2017-113 |
(To be available after the conference date) [more] | MW2017-113 pp.9-13 |
| MW | 2017-11-09 13:50 |
Okinawa | Miyakojima Marin Terminal Bldg. | Effects of drain-gate feedback capacitance on output power and power efficiency of microwave power amplifier Yoichiro Takayama, Kazuhiko Honjo, Ryo Ishikawa (UEC) MW2017-120 |
(To be available after the conference date) [more] | MW2017-120 pp.45-49 |
| MW | 2017-11-09 14:05 |
Okinawa | Miyakojima Marin Terminal Bldg. | Wide-Band High-Efficiency GaN HEMT Amplifier Based on Multi-Harmonic Treatments at Low SHF Band Yuki Takagi, Ryo Ishikawa, Kazuhiko Honjo (UEC) MW2017-121 |
High-efficiency power amplifiers operating at higher-frequency bands are required for next generation wireless communica... [more] | MW2017-121 pp.51-56 |
| 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 |
| 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 |
| CAS, CS | 2017-02-23 12:40 |
Shiga | Linearity of Power Amplifier for Mobile Applications Satoshi Tanaka (Murata) CAS2016-118 CS2016-79 |
In mobile phone systems, the 4th generation is widely prevailing in 2017, and in 2020, it is expected that the 5th gener... [more] | CAS2016-118 CS2016-79 pp.19-24 |
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| ICD, CPM, ED, EID, EMD, MRIS, OME, SCE, SDM, QIT (Joint) [detail] |
2017-01-30 11:55 |
Hiroshima | Miyajima-Morino-Yado(Hiroshima) | Distar power amplifier
-- Novel power amplifier consists of only LED and Si solar cell -- Okamoto Kensho (Opto-SC Appl. Labo) EMD2016-69 MR2016-41 SCE2016-47 EID2016-48 ED2016-112 CPM2016-113 SDM2016-112 ICD2016-100 OME2016-81 |
The author , emeritus professor Kagawa University, invented an epoch-making transistor composed of an infrared light-emi... [more] | EMD2016-69 MR2016-41 SCE2016-47 EID2016-48 ED2016-112 CPM2016-113 SDM2016-112 ICD2016-100 OME2016-81 pp.1-6 |
| MW, ED | 2017-01-27 14:50 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | 30W Output/60% PAE GaN Power Amplifier at X-band 8% Relative Bandwidth Utilizing 0.15um GaN HEMT Technology Yoshifumi Kawamura, Masatake Hangai, Tomohiro Mizutani, Kenichi Tomiyama, Koji Yamanaka (Mitsubishi Electric) ED2016-111 MW2016-187 |
In this paper, a 30W-class X-band high-efficiency Internally Matched FET (IMFET) implemented in a 0.15 um GaN HEMT proce... [more] | ED2016-111 MW2016-187 pp.81-84 |
| MW | 2016-12-15 11:10 |
Kanagawa | National Defense Academy | A High-Efficiency GaN HEMT Power Amplifier with Harmonic Reactive Termination using a T Shaped Stab for Two Harmonics Yuki Takagi, Ryo Ishikawa, Kazuhiko Honjo (UEC) MW2016-138 |
A microwave multiband high-efficiency power ampli er is required for the next-generation mobile communication system to ... [more] | MW2016-138 pp.35-40 |
| MW | 2016-12-15 11:30 |
Kanagawa | National Defense Academy | Large Signal Characteristics and Linearity Improvement for Single-GaN HEMT Dual-Band Power Amplifier in Concurrent Operation Mode Arisu Maruyama, Yoichiro Takayama, Ryo Ishikawa, Kazuhiko Honjo (UEC) MW2016-139 |
Power amplifiers that enable multi-access in the microwave band have not been studied in detail so far, and the behavior... [more] | MW2016-139 pp.41-46 |
| MW, WPT | 2016-04-21 11:00 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | A Novel Adaptive Digital Predistortion for Concurrent Multi-Band RF Power Amplifiers Tomoya Ota, Toshio Kawasaki, Shigekazu Kimura, Ken Tamanoi, Toru Maniwa (Fujitsu) WPT2016-2 MW2016-2 |
In order to provide broadband communication in fifth generation mobile communication systems, multi-band technologies th... [more] | WPT2016-2 MW2016-2 pp.7-10 |
| SAT, SANE (Joint) |
2016-02-16 14:35 |
Hiroshima | Hiroshima Institute of Technology | High Power transmitter for X band SAR system on Small satellite Hiromi Watanabe (UT), Hirobumi Saito (JAXA) SANE2015-109 |
We are now developing subsystems in order to put our X-band Synthetic Aperture Radar system for 100kg class small satell... [more] | SANE2015-109 pp.13-18 |
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