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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 |
| 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, 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, ED | 2015-01-16 15:20 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Higher-order Bandpass Characteristics of Four-path Power-amplifier-inserted Transversal Filter in EPWM Transmitter for FPGA Implementation Kazuaki Watanabe, Shota Fujioka, Takashi Yano, Yohtaro Umeda, Yusuke Kozawa (Tokyo Univ. of Science) ED2014-135 MW2014-199 |
This paper designs EPWM transmitter using higher-order band-pass characteristics of 4-path power-amplifier-inserted tran... [more] | ED2014-135 MW2014-199 pp.105-110 |
| AP (2nd) |
2013-05-31 16:15 |
Ehime | Matsuyama Multi-Purpose Community Center | An Extension of Balanced and Unbalanced Mode Analysis for Balanced-Fed Asymmetric Antennas Nozomu Ishii (Niigata Univ.) |
It is well known that the unbalanced mode current flows on the outer conductor of the coaxial line, which is connected a... [more] | |
| AP, WPT (Joint) |
2012-08-27 10:35 |
Niigata | Niigata Univ. | Input Impedance Measurement of a Balanced Dipole Antenna Corrected by Considering Characteristic of 180-degree 3dB Hybrid Coupler Junki Hayakawa, Nozomu Ishii (Niigata Univ.) AP2012-69 |
It is known that the input impedance of balanced antennas can be measured with the 180-degree 3dB hybrid coupler. Howeve... [more] | AP2012-69 pp.7-12 |
| AP, WPT (Joint) |
2011-10-14 16:25 |
Kanagawa | Kanagawa Womens Center | Uncertainty of Radiation Efficiency Measurement Based on Wheeler Method Using Two Novel Estimations for Reflection Coefficients Yohei Kobayashi, Nozomu Ishii (Niigata Univ.) AP2011-88 |
Several mesurement techniques using $180^\circ$ 3dB hybrid coupler or power divider were proposed to reduce the uncertai... [more] | AP2011-88 pp.67-72 |
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