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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 31  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
CAS, MSS, IPSJ-AL [detail] 2022-11-17
13:55
Kochi
(Primary: On-site, Secondary: Online)
Mathematical Properties of Linear Equation Derived from One-Dimensional Wave Equation
Nobuo Nagai (Hokkaido Univ.), Hirofumi Sanada (HUS), Takashi Yahagi (RISP) CAS2022-39 MSS2022-22
 [more] CAS2022-39 MSS2022-22
pp.13-18
CAS, SIP, VLD, MSS 2022-06-17
14:15
Aomori Hachinohe Institute of Technology
(Primary: On-site, Secondary: Online)
Important Roles of Heaviside's Expansion Theorem for Electromagnetic Phenomena
Nobuo Nagai (Hokkaido Univ.), Takashi Yahagi (RISP) CAS2022-15 VLD2022-15 SIP2022-46 MSS2022-15
 [more] CAS2022-15 VLD2022-15 SIP2022-46 MSS2022-15
pp.78-83
CAS, CS 2022-03-03
16:30
Online Online Spatial One-Dimensional Electromagnetic Equation of Glass for Visible Light
Nobuo Nagai (Hokkaido Univ.), Hirofumi Sanada (HUS), Takashi Yahagi (RISP) CAS2021-85 CS2021-87
 [more] CAS2021-85 CS2021-87
pp.59-64
CAS, NLP 2021-10-14
11:40
Online Online Reformulated Maxwell Equations and Coaxial Transmission Line
Nobuo Nagai (Hokkaido Univ.), Hirofumi Sanada (HUS), Takashi Yahagi (RISP) CAS2021-21 NLP2021-19
 [more] CAS2021-21 NLP2021-19
pp.23-28
SIP, CAS, VLD, MSS 2021-07-05
11:15
Online Online A Consideration on Physical Properties of Electromagnetic Waves Expressed by Circuit Theory -- Reciprocity Enables Losslessness and Resonance to Stand Together --
Nobuo Nagai (Hokkaido Univ.), Hirofumi Sanada (HUS), Takashi Yahagi (RISP) CAS2021-2 VLD2021-2 SIP2021-12 MSS2021-2
 [more] CAS2021-2 VLD2021-2 SIP2021-12 MSS2021-2
pp.5-10
CAS, CS 2021-03-02
10:25
Online Online The Maxwell Equations Reformulated by Heaviside Which Can Handle Reflect Waves and Phase
Nobuo Nagai (Hokkaido Univ.), Hirofumi Sanada (HUS), Takashi Yahagi (RISP) CAS2020-78 CS2020-85
 [more] CAS2020-78 CS2020-85
pp.35-40
CAS, ICTSSL 2021-01-29
14:05
Online Online Resonant Waves Formed by Using Reflect Waves Generated with Electromagnetic Waves
Nobuo Nagai (Hokkaido Univ.), Hirofumi Sanada (HUS), Takashi Yahagi (RISP) CAS2020-65 ICTSSL2020-50
 [more] CAS2020-65 ICTSSL2020-50
pp.136-141
MBE, NC, NLP, CAS
(Joint) [detail]
2020-10-30
14:20
Online Online Application of Circuit Theory to Variational Calculus Used in Analysis of Maxwell Equations
Nobuo Nagai (Hokkaido Univ.), Hirofumi Sanada (HUS), Takashi Yahagi (risp) CAS2020-17 NLP2020-38
 [more] CAS2020-17 NLP2020-38
pp.29-34
NLP 2008-01-31
15:15
Hokkaido   Design of Auxiliary Circuit on Class-E_M Power Amplifier
Ryosuke Miyahara, Hiroo Sekiya, Jianming Lu, Takashi Yahagi (Chiba Univ.) NLP2007-134
The class E$_{\rm M}$ amplifier is composed of class E amplifier and auxiliary circuit output harmonic. The class E$_{\r... [more] NLP2007-134
pp.31-36
NLP 2008-01-31
15:40
Hokkaido   Design of iinterleaved full-bridge converter
Tomomi Dohi, Hiroo Sekiya, Jianming Lu, Takashi Yahagi (Chiba Univ.) NLP2007-135
This paper presents one configuration of the interleaved full-bridge converter.
Approached converter has the following... [more]
NLP2007-135
pp.37-40
RCS, SIP 2008-01-24
15:35
Hiroshima Hiroshima City Uni. Low-Complexity Selected Mapping Schemes with Subband Division in OFDM Systems
Tomoya Imamachi, Tatsuru Watanabe, Hiroo Sekiya, Jianming Lu, Takashi Yahagi (Chiba Univ.) SIP2007-147 RCS2007-150
One of the drawbacks of orthogonal frequency-division multiplexing(OFDM) system is high peak–to-average power rati... [more] SIP2007-147 RCS2007-150
pp.97-102
RCS, SAT
(Joint)
2007-12-20
16:50
Oita   Analysis and Experiments of Maximum Throughput in Wireless Multi-hop Networks
Masahiko Inaba, Yoshihiro Tomita, Masaki Matsumoto, Hiroo Sekiya, Takashi Yahagi, Shiro Sakata (Chiba Univ.), Kengo Yagyu (NTT DoCoMo) RCS2007-121
Quantitative analyses of the maximum throughput in IEEE 802.11 Multi-hop Networks with one-way flow have been studied. H... [more] RCS2007-121
pp.55-60
EE 2007-11-19
09:30
Tokyo   Interleaved Class E2 dc/dc Converter with Phase Control
Motoki Katayama, Hiroo Sekiya, Jianming Lu, Takashi Yahagi (Chiba Univ.) EE2007-35
This paper presents an interleaved class E$^2$ dc/dc converter with phase control. In the proposed converter, two phase ... [more] EE2007-35
pp.7-12
EE 2007-11-19
15:30
Tokyo   Effect of nonlinear output capacitance in class DE amplifier
Hiroo Sekiya, Takayuki Watanabe (Chiba Univ.), Tadashi Suetsugu (Fukuoka Univ.), Takashi Yahagi (Chiba Univ.) EE2007-43
In this paper, equations for the waveform and the design relationships are derived for the class DE amplifier with nonli... [more] EE2007-43
pp.51-56
NLP 2007-04-25
15:45
Nagano   Impremention of Design tool for class E switching circuits using Spice
Hiroo Sekiya, Tooru Ezawa, Takashi Yahagi (Chiba Univ.) NLP2007-7
This paper presents a design tool for class E switching circuits using SPICE. This design tool is implemented by using t... [more] NLP2007-7
pp.37-42
CPM, EE 2007-03-02
15:40
Tokyo Kikai-Shinko-Kaikan Bldg Design of Class DE Amplifier with Nonlinear Shunt Capacitance with Any Output Q
Tooru Ezawa, Hiroo Sekiya, Jianming Lu, Takashi Yahagi (Chiba Univ.) EE2006-69 CPM2006-162
This paper presents design of class DE amplifier with nonlinear shunt capacitance with any output Q. It is assumed that ... [more] EE2006-69 CPM2006-162
pp.41-46
EE 2007-01-26
10:15
Nagasaki Nagasaki prefectural art museum Numerical calculation method for class E switching circuit
Tooru Ezawa, Hiroo Sekiya, Jianming Lu, Takashi Yahagi (Chiba Univ.) EE2006-47
This paper presents a novel design procedure for class E switching circuit.
In the circuit simulator Spice, if the semi... [more]
EE2006-47
pp.59-64
EE 2007-01-26
16:25
Nagasaki Nagasaki prefectural art museum Design and evaluation of Class DE inverter with band-pass filter
Motoki Katayama, Hiroyuki Hase, Hiroo Sekiya, Jianming Lu, Takashi Yahagi (Chiba Univ.) EE2006-59
In this paper, class DE inverter with second order constant K band-pass filter is proposed. In the proposed inverter, th... [more] EE2006-59
pp.133-138
NLP 2007-01-17
14:50
Kagawa   Numerical Design of Class DE Amplifier with Nonlinear Shunt Capacitance
Takayuki Watanabe, Hiroo Sekiya (Chiba Univ.), Tadashi Suetsugu (Fukuoka Univ.), Takashi Yahagi (Chiba Univ.)
A Class DE amplifier is the amplifier which can achieve high efficiency movement under number of the high frequencies mo... [more] NLP2006-120
pp.51-56
NLP 2006-12-14
12:35
Hokkaido   Analysis of class DE amplifier with nonlinear shunt capacitance
Hiroo Sekiya, Takayuki Watanabe (Chiba Univ.), Tadashi Suetsugu (Fukuoka Univ.), Takashi Yahagi (Chiba Univ.)
 [more] NLP2006-109
pp.39-44
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