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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| ICD | 2012-12-18 14:20 |
Tokyo | Tokyo Tech Front | High Efficiency 315MHz Transmitter with Dual Supply Voltage Scheme Shunta Iguchi (Univ. of Tokyo), Akira Saito, Kazunori Watanabe (STARC), Takayasu Sakurai, Makoto Takamiya (Univ. of Tokyo)  ICD2012-119 |
Dual power supply voltage (VDD) scheme is proposed to increase the efficiency of a power amplifier (PA) with small outpu... [more] | ICD2012-119 pp.121-126 |
| MW | 2012-12-13 14:00 |
Yamanashi | Univ. of Yamanashi | A study on application of Class-E amplifier to EPWM transmitter Naoki Oyama, Makoto Taromaru (Fukuoka Univ.) MW2012-128 |
The PAE of Class-E/F such as switching-mode amplifiers is superior, but it is nonlinear. EPWM is one of the architectu... [more] |
MW2012-128 pp.7-12 |
| NLP | 2012-04-20 15:40 |
Mie | Ise City Plaza | Analytical Derivation of Power Conversion Efficiency for Class-E Amplifier With Any Q Tomoharu Nagashima, Xiuqin Wei (Chiba Univ.), Takuji Kousaka (Oita Univ.), Hiroo Sekiya (Chiba Univ.) NLP2012-23 |
This paper presents analytical derivation of power conversion efficiency for the class-E amplifier with any Q. For obt... [more] |
NLP2012-23 pp.115-120 |
| SR, RCS, SRW (Joint) |
2012-03-09 17:05 |
Kanagawa | YRP | A Study on Transversal-Filter Type of Power Amplifier for Applying Switching Operation Transmitter Michiaki Kojima, Hironori Izumi, Yohtaro Umeda (Tokyo Univ. of Science), Osamu Takyu (Shinshu Univ.) RCS2011-374 |
A transmitter in wireless communication requires high power-efficiency, high linearity, and low distortion. Envelope pul... [more] | RCS2011-374 pp.347-352 |
| ED, MW | 2012-01-11 14:55 |
Tokyo | Kikai-Shinko-Kaikan Bldg | Distortion Compensation of Class-E Power Amplifier Modulating Envelope Pulse Width for Quadrature Amplitude Modulation Signal Shota Fujioka, Yohtaro Umeda (Tokyo Univ. of Sience), Osamu Takyu (Shinshu Univ.) ED2011-126 MW2011-149 |
Transmitter in wireless communication is required to be efficient, linearity, low distortion. Envelope Pulse Width Modul... [more] | ED2011-126 MW2011-149 pp.41-46 |
| NLP | 2011-11-09 14:05 |
Okinawa | Miyako Island Marine Terminal | Analytical Derivation of Switching-pattern Distribution for Class-E Amplifier Using Bifurcation Theory Tomoharu Nagashima, Xiuqin Wei (Chiba Univ.), Takuji Kousaka (Oita Univ.), Hiroo Sekiya (Chiba Univ.) NLP2011-100 |
This paper presents analytical switching-pattern distributions for the class-E amplifier. For obtaining the switching-pa... [more] | NLP2011-100 pp.49-54 |
| RCS, NS (Joint) |
2011-07-22 11:45 |
Hokkaido | Asahikawa Civic Culture Hall | Fundamental Study on Drain Efficiency of EPWM Transmitter using Class-E_M Power Amplifier Naoki Oyama (Fukuoka Univ.), Hiroo Sekiya (Chiba Univ.), Tadashi Suetsugu, Makoto Taromaru (Fukuoka Univ.) RCS2011-101 |
Drain efficiency of EPWM (envelope pulse width modulation) transmitter composed of a class-E_M amplifier is evaluated by... [more] | RCS2011-101 pp.157-162 |
| NLP | 2011-07-02 09:35 |
Hokkaido | Shari-cho Kohminkan: Yme-hall Shiretoko | Dynamic Behavior of the Class-EM Amplifier with One Input Signal Ryuta Nakamura (Oita Univ.), Hiroo Sekiya (Chiba Univ.), Takuji Kousaka (Oita Univ.) NLP2011-53 |
The class-EM amplifier took notice; because of keeps high efficiency and high frequency. The class-EM amplifier that dri... [more] | NLP2011-53 pp.161-164 |
| NLP | 2011-07-02 10:25 |
Hokkaido | Shari-cho Kohminkan: Yme-hall Shiretoko | Power Conversion Efficiency of Class-E Power Amplifier Outside Nominal Operation Tomoharu Nagashima, Xiuqin Wei, Hiroo Sekiya (Chiba Univ.) NLP2011-55 |
This paper gives analytical expressions for the output power and the power conversion efficiency of the class-E power a... [more] |
NLP2011-55 pp.171-175 |
| ICD, ITE-IST | 2010-07-23 10:05 |
Osaka | Josho Gakuen Osaka Center | Considerations of a Common-mode Feedback Circuit in the CMOS Inverter-based Differential Amplifier. Masayuki Uno (Linear Cell Design) ICD2010-32 |
Push-pull CMOS inverter is effective for high-speed, low-power operations, but it has poor CMRR and PSRR characteristics... [more] | ICD2010-32 pp.67-72 |
| RCS, NS (Joint) |
2010-07-15 10:30 |
Hokkaido | Abashiri Public Auditorium | Performance Evaluation of Gaussian Filtered Constant Envelope Modulation Systems with a Low-Resolution ADC Kohei Kotera, Osamu Muta, Hiroshi Furukawa (Kyushu Univ.) RCS2010-51 |
To a small size and power-efficient relay station for wireless backhaul networks, the authors have proposed a multi-in... [more] |
RCS2010-51 pp.19-24 |
| EE | 2010-01-22 10:15 |
Fukuoka | Simulation of Power Dissipation at MOSFET Gate Port of Class E Amplifier Shouichirou Yonekura, Taishi Matsuzaki, Tadashi Suetsugu (Fukuoka Univ.) EE2009-42 |
In this paper, gate port power dissipation of class E amplifier is obtained as a function of amplitude and offset of dri... [more] | EE2009-42 pp.37-40 |
|
| EE | 2010-01-22 10:40 |
Fukuoka | Derivation of Analytical Expression of Maximum Operating Frequency of Class E Amplifier with Nonlinear Shunt Capacitance Keisuke Nakajima, Akira Ito, Tadashi Suetsugu (Fukuoka Univ.) EE2009-43 |
The maximum operating frequency of the class E amplifier with nonlinear shunt capacitance depends on the transistor duty... [more] | EE2009-43 pp.41-45 |
|
| RCS, SAT (Joint) |
2009-12-18 15:30 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | A Study on Quantization Noise Reduction of Delta-Sigma Modulator with Nonuniform Quantization Mao Hagiwara (Chuo Univ.), Toru Kitayabu, Hiroyasu Ishikawa (KDDI R&D Labs.), Hiroshi Shirai (Chuo Univ.) RCS2009-197 |
In this paper, a novel delta-sigma modulator which has a non-uniform quantizer is proposed. A delta-sigma modulator is u... [more] | RCS2009-197 pp.179-184 |
| EMCJ, MW, IEE-MAG | 2009-10-22 15:00 |
Iwate | Iwate Univ. | S-band, Internally Matched Class-E GaN HEMT Amplifier Yukio Takahashi, Takashi Higuchi, Kazutoshi Masuda (Toshiba Corp.) EMCJ2009-50 MW2009-99 |
A Class-E amplifier is designed at S-band with our inhouse developed GaN HEMTs. The Class-E amplifier generally describe... [more] | EMCJ2009-50 MW2009-99 pp.37-40 |
| EE | 2009-07-30 13:00 |
Shimane | Development of a Fully Solid State Wide band Short-wave Transmitter of PSM modulation method using DC to RF conversion technology Masahiko Yamazoe (NHK), Kazuhisa Haeiwa (Hiroshima City Univ.), Shoji Hirose (NHK), Masayoshi Fukumoto (NEC), Hideo Sato (NIHON KOUSHUHA) EE2009-7 |
We developed an evolutional wideband (3M～26MHz) short-wave transmitter with an output of 1kW using PSM (Pulse Step Modul... [more] | EE2009-7 pp.1-6 |
|
| EE, CPM | 2009-01-23 11:10 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Transient Behavior of Class E Amplifier due to Load Variation Takeshi Yasukouchi, Tadashi Suetsugu (Fukuoka Univ.) EE2008-56 CPM2008-135 |
Class E amplifier is often broken when it is operating with a fluctuating load. This is because excessive voltage or cur... [more] | EE2008-56 CPM2008-135 pp.13-17 |
| MW, ED | 2009-01-16 11:20 |
Tokyo | Kikai-Shinko-Kaikan Bldg | A High Efficiency Class-F GaN HEMT Power Amplifier with a Diode Predistortion Linearizer Akihiro Ando, Yoichiro Takayama, Tsuyoshi Yoshida, Ryo Ishikawa, Kazuhiko Honjo (The Univ of Electro-Communications) ED2008-222 MW2008-187 |
This paper describes a high-efficiency Class-F GaN HEMT power amplifier linearized by a diode predistorter. The series d... [more] | ED2008-222 MW2008-187 pp.135-139 |
| ICD, ITE-IST | 2008-10-22 15:50 |
Hokkaido | Hokkaido University | Optimum Design Considerations for a CMOS Amplifier and Effectiency of class-AB Structure Masayuki Uno, Shoji Kawahito (Shizuoka Univ.) ICD2008-64 |
This paper describes design considerations for a CMOS amplifier to meet a frequency specification at the minimum curren... [more] | ICD2008-64 pp.31-36 |
| MW | 2008-08-29 11:20 |
Osaka | Osaka-Univ. (Toyonaka) | Microwave Inverse Class-F GaN HEMT Amplifier using Harmonic Treatment Circuit Constructed with Lumped Circuit Elements Ryo Ishikawa, Yasuyuki Abe, Kazuhiko Honjo (UEC) MW2008-94 |
We have developed a microwave inverse class-F GaN HEMT amplifier using a harmonic treatment circuit constructed with lum... [more] | MW2008-94 pp.87-92 |
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