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Committee Date Time Place Paper Title / Authors Abstract Paper #
MW 2020-11-19
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
MW 2019-11-14
Okinawa Minami Daido Villa. Tamokuteki Koryu Center Multifunctional CRLH Transmission Line Stubs for Compact Class-E/Inverse-Class-E Power Amplifiers
Hirotaka Asami, Shinichi Tanaka (Shibaura Inst. of Tech.) MW2019-109
This report presents CRLH transmission line (TL) stubs for realizing compact high-efficiency class-E / inverse class-E p... [more] MW2019-109
EMT, MW, OPE, MWP, EST, IEE-EMT [detail] 2015-07-17
Hokkaido Kushiro City Lifelong Learning Center A Simple DPD for Nonlinear Compensation of Beamforming Transmitter
Toshiki Hamanaka (Tokyo Univ.), Yasushi Yamao, Yuelin Ma (UEC), Koki Tanji, Eiichiro Otobe (Samsung R&D Japan) EMT2015-46 MW2015-84 OPE2015-58 EST2015-50 MWP2015-49
OFDM is widely used for broadband and high-capacity mobile communications. However, it has high PAPR due to its multicar... [more] EMT2015-46 MW2015-84 OPE2015-58 EST2015-50 MWP2015-49
MW, ICD 2015-03-05
Fukui University of Fukui [Special Talk] Power Amplifier Linearization Using Digital Predistortion Technology: Practical Development and Implementation Issues
Yuelin Ma, Yasushi Yamao (UEC) MW2014-213 ICD2014-126
On firm ground for highly-developed nonlinear modeling theories, the Digital predistortion (DPD) is a practice of compen... [more] MW2014-213 ICD2014-126
MW, ED 2015-01-16
Tokyo Kikai-Shinko-Kaikan Bldg. Digital Doherty Transmitter with Envelope ΔΣ Modulated Class-D GaN Amplifier for 800 MHz band
Keiichi Motoi (NEC), Andreas Wentzel (FBH), Masaaki Tanio, Shinichi Hori, Makoto Hayakawa (NEC), Wolfgang Heinrich (FBH), Kazuaki Kunihiro (NEC) ED2014-131 MW2014-195
This paper presents a novel transmitter (Tx) architecture combining voltage-mode class-D power amplifiers (PAs) with an ... [more] ED2014-131 MW2014-195
MW 2014-11-21
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
MW 2009-09-25
Tokyo Univ. of Electro-Communications [Special Talk] Anlysis and Design of a Dynamic Predistorter for WCDMA Handsets Power Amplifier
Shingo Yamanouchi, Yuuichi Aoki, Kazuaki Kunihiro (NEC), Tomohisa Hirayama (NEC Electronics Corp.), Takashi Miyazaki (NEC), Hikaru Hida (NEC Electronics Corp.) MW2009-90
This paper presents a dynamic predistorter (PD), which linearizes dynamic AM-AM and AM-PM of a wide-band CDMA (WCDMA) ha... [more] MW2009-90
MW, EMCJ 2008-10-23
Yamagata Yamagata Univ. Millimeter-Wave Power Amplifiers in 90nm CMOS
Toshihide Suzuki, Yoichi Kawano, Masaru Sato, Tatsuya Hirose, Naoki Hara, Kazukiyo Joshin (FJ Lab.) EMCJ2008-67 MW2008-111
This paper introduces millimeter-wave band power amplifiers (PAs) using standard 90nm CMOS technology. By developing an ... [more] EMCJ2008-67 MW2008-111
ED, MW 2008-01-17
Tokyo Kikai-Shinko-Kaikan Bldg. Fully Integrated HBT MMIC Power Amplifier Modules for Use in 2.5/3.5-GHz-Band WiMAX Applications
Miyo Miyashita, Toshio Okuda, Hitoshi Kurusu (MELCO), Shoichi Shimamura, Shinsuke Konishi (WTI), Junichi Udomoto, Ryo Matsushita, Yoshinobu Sasaki, Satoshi Suzuki, Takeshi Miura (MELCO), Yoshio Takahara (RSE), Makio Komaru, Kazuya Yamamoto (MELCO) ED2007-220 MW2007-151
This paper describes two GaAs HBT MMIC power amplifier modules (PAs) for 2.5-GHz- and 3.5-GHz-band WiMAX applications. E... [more] ED2007-220 MW2007-151
Kanagawa YRP [Invited Talk] Circuit design of highly linear and efficient power amplifiers for WCDMA applications -- Dynamic predistortion and polar modulation technologies --
Kazuaki Kunihiro, Shingo Yamanouchi, Kiyohiko Takahashi, Yuuichi Aoki (NEC)
This paper presents linearization and efficiency-enhancement techniques, i.e., dynamic predistortion (PD) and polar modu... [more] MW2006-193
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