Kyushu University Academic Staff Educational and Research Activities Database
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Kuniaki Yoshitomi Last modified date:2017.05.25



Graduate School
Undergraduate School


E-Mail
Phone
092-802-6911
Fax
092-802-6913
Academic Degree
Doctor of Engineering
Field of Specialization
Electromagnetic Wave Theory
Research
Research Interests
  • Design and analysis of small sized antennas
    keyword : antenna
    2010.09.
  • water pollution monitering by measuring active voltage from medaka
    keyword : safety engineering, water pollution monitering
    2005.09.
  • Study of absorption of electromagnetic wave by thin electromagnetic wave absorber
    keyword : electromagnetic wave absorber, electromagnetic compatibility
    1995.04~2007.10Shielding effect of electromagnetic shielding plates with apertures, a simple model of a shielding case of an electric device, was studied both analytically and experimentally. In the analytical study, we obtained a Green's function which represents the fields radiated from a source on a lossy ground plane. A Green's function for the field in a waveguidewas also obtained. A surface impedance boundary condition was introduced to simplify the boundary conditions for the lossy surfaces of the shielding plates. By using these Green's functions, analytical results of the field scattered by a slotin a lossy screen were obatined. It was found that a thin magnetic coating reduces the transmission power through a slot for the frequency higher than the resonant frequency of the slot, while for the frequency lower than that the transmitted power through the slot increases. This frequency dependence of the transmission powerthrough a slot is important when we use a magnetic coating material to reduce electromagnetic wave leakage through a slot. In the experimental study, he scattered fields by a slotin a metal plate covered with an absorbing material were measured. The results were in good agreement with the theoretical one..
Academic Activities
Papers
1. 岩井 郁也, Yoshitomi Kuniaki, Haruichi Kanaya, Miniaturized high-band UWB array antenna, Microwave and Optical Technology Letters, 59, 7, 2017.05.
2. Hany A. Atallah, Adel B. Abdel-Rahman, Yoshitomi Kuniaki, Ramesh Kumar Pokharel, Reconfigurable Band-Notched Slot Antenna Using Short Circuited Quarter Wavelength Microstrip Resonators, Progress In Electromagnetics Research C, 68, 2016.10.
3. Hany A. Atallah, Adel B. Abdel-Rahman, Yoshitomi Kuniaki, Ramesh Kumar Pokharel, Mutual Coupling Reduction in MIMO Patch Antenna Array Using Complementary Split Ring Resonators Defected Ground Structure, Applied Computational Electromagnetics Society Journal, 31, 7, 2016.07.
4. Chai Eu Guan, Yoshitomi Kuniaki, Haruichi Kanaya, Derivation of the Optimum Distance between Periodically Spaced Vias for Leakage Suppression at S-band, MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, 58, 5, 2016.05.
5. Hany A. Atallah, Adel B. Abdel-Rahman, Yoshitomi Kuniaki, Ramesh Kumar Pokharel, Design of Dual Band-Notched CPW-Fed UWB Planar Monopole Antenna Using Microstrip Resonators, Progress In Electromagnetics Research Letters, 59, 2016.03.
6. Hany A. Atallah, Adel B. Abdel-Rahman, Yoshitomi Kuniaki, Ramesh Kumar Pokharel, Tunable Band-Notched CPW-Fed UWB Monopole Antenna Using Capacitively Loaded Microstrip Resonator for Cognitive Radio Applications, Progress In Electromagnetics Research C, 62, 2016.02.
7. Lingsheng Yang, Yongan Zhu, Yoshitomi Kuniaki, CPW-Fed Reconfigurable Clover-Shaped Antenna with Switchable Circular Polarization, IEICE Transaction on Communications, E99-B, 1, 2016.01.
8. Lingsheng Yang, Tao Li, Feng Wang, Yoshitomi Kuniaki, Compact Tri-Bans MIMO Antenna for LTE/GSM Mobile Handset Application, IEICE Transaction on Communications, E99-B, 1, 2016.01.
9. Hideharu Yoshioka, Lingsheng Yang, Emad Tamman, Yoshitomi Kuniaki, A highly compact dual-band WLAN/UWB monopole antenna, IEICE Electronics Express, 9, 3, 160-164, 2012.02.
10. Lingsheng Yang, Kuniaki Yoshitomi, A compact circular corner monopole antenna for UWB application, Microwave and Optical Technology Letters, 5, 4, 147-150, 2012.01.
11. L. Lolit Kumar Singh, Bhaskar Gupta, Partha P. Sarkar, Kuniaki Yoshitomi, and Kiyotoshi Yasumoto, Cross Slot Multifrequency Patch Antennas, MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, Vol.5, No.6, pp.390-395, 2010.03.
12. L. Lolit Kumar Singh, Bhaskar Gupta, Partha P Sarkar, Kiyotoshi Yasumoto and Kunikai Yoshitomi, L-Shaped Slot Broadband Single Layer Rectangular Patch Antennas, International Journal of Microwave and Technology, vol. 5, no. 6, Vol.5, No.6, pp.390-395, 2010.11.
13. K. Yoshitomi, A study on the excitation and the input impedance of an antenna, Asian Journal of Physics, Vol. 19, No. 2, 2009, 2009.05.
14. L. Lolit Kumar Singh, B. Gupta, K. Yoshitomi, and K. Yasumoto, New single layer wideband rectangular patch antenna, Asian Journal of Physics, Vol. 19, No. 2, 2009, 2009.05.
15. Kosei Moriyama and Kuniaki Yoshitomi, Apartment Electrical Wiring: A Cause of Extremely Low Frequency Magnetic Field Exposure in Residential Areas, Bioelectromagnetics, 26, 3, vol.26, pp.238-241, 2005.04.
16. Kosei Moriyama, Hiroyuki Sato, Kenji Tanaka, Yoshiyuki Nakashima, and Kuniaki Yoshitomi, Extremely Low Frequency Magnetic Fields Originating from Equipment Used for Assisted Reproduction, Umbilical Cord and Peripheral Blood Stem Cell Transplantation, Transfusion, and Hemodialysis, Bioelectromagnetics, 26, 1, vol.26, pp.69-73, 2005.01.
17. Measurement of RF noise in a magnetic sheild with a developed monopole antenna -- Effect of RF noise on FLL operation of dc-SQUID sensors --

K. Tashiro, I. Sasada, K. Yoshitomia and K. Kazami

Transactions of the Magnetics Society of Japan.
18. Measurement and reduction of power frequency magnetic fields in a residential area

K. Yoshitomi

The Transactions of the Institute of Electronics, Information and Communication Engineers B.
19. H.Jia, K.Yoshitomi, and K.Yasumoto, Rigorous analysis of E-/H-plane junctions in rectangular waveguides using Fourier transform technique, Progress In Electromagnetics Research, PIER, Vol.PIER21, pp.273--292, 1998.01.
20. K.Yasumoto and K.Yoshitomi, Efficient calculation of lattice sums for free-space periodic Green's function, IEEEE Transactions on Antennas and Propagation, 47, 6, Vol.47, No.6, pp.1050 -- 1055, 1999.06.
21. K.Yoshitomi, Radiation from a slot in an impedance surface, IEEE Transactions on Antennas and Propagation, 49, 10, Vol.49, No.10, pp.1370-1376, 2001.10.
22. H.Jia, K.Yoshitomi, and K.Yasumoto, Rigorous analysis of rectangular waveguide junctions by Fourier transform technique, Progress In Electromagnetics Research, PIER, Vol.20, pp.263--282, 1998.01.
Works, Software and Database
1. .
Presentations
1. 山口恭平, 吉富邦明, 金谷 晴一, Development of 5GHz Circularly Polarized Slot Antenna, 2016 Asia‒Pacific Workshop on Fundamentals and Application of Advanced Semiconductor Devices, 2016.07.27.
2. 古賀柾洋, 吉富邦明, 金谷 晴一, Miniaturized High Gain Slot Dipole Array Antenna for X‒band Application, 2016 Asia‒Pacific Workshop on Fundamentals and Application of Advanced Semiconductor Devices, 2016.07.27.
3. 岩井郁也, 吉富邦明, 金谷 晴一, Miniaturized High‒band UWB Monopole Antenna, 2016 Asia‒Pacific Workshop on Fundamentals and Application of Advanced Semiconductor Devices, 2016.07.27.
4. Hany A. Atallah, Adel B. Abdel-Rahman, 吉富邦明, POKHAREL RAMESH KUMAR, Design of Miniaturized Reconfigurable Slot Antenna Using Varactor Diodes for Cognitive Radio Systems, The Fourth International Japan-Egypt Conference on Electronics, Communications and Computers JEC-ECC 2016, 2016.05.31.
5. Hany A. Atallah, Adel B. Abdel-Rahman, 吉富邦明, Sherif Hekal, POKHAREL RAMESH KUMAR, Design of Frequency Tunable CPW-Fed UWB Antenna Using Varactor Diodes for Cognitive Radio and Future Software Defined Radio, IEEE Wireless and Microwave Technology Conference WAMICON 2016, 2016.04.11.
6. Hany A. Atallah, Adel B. Abdel-Rahman, 吉富邦明, POKHAREL RAMESH KUMAR, New Compact Tunable Filter-Antenna Using Varactor Loaded Ring Resonator for Cognitive Radio Front End System, 2016 IEEE International Conference on Wireless Information Technology and Systems (ICWITS) and Applied Computational Electromagnetics Society (ACES), 2016.03.16.
7. Hany A. Atallah, Adel B. Abdel-Rahman, 吉富邦明, POKHAREL RAMESH KUMAR, Compact Frequency Tunable Filtenna with Wide Continuous Tuning Range Using Capacitively Loaded Folded Arms Open Loop Resonator for Interweave Cognitive Radio Applications, 2016, 33rd NATIONAL RADIO SCIENCE CONFERENCE (NRSC 2016), 2016.02.25.
8. Hany A. Atallah, Adel B. Abdel-Rahman, 吉富邦明, POKHAREL RAMESH KUMAR, Novel Compact Tunable Bandpass Filter Using Capacitively Loaded H-shaped Resonator, 2015 IEEE International Conference on Electronics, Circuits, and Systems, 2015.12.07.
9. M Hanif, Ramesh Kumar Pokharel, 吉富邦明, Adel Barakat, Hala Elsadek, A Gain Enhanced 60 GHz CMOS Antenna-On-Chip Using Off-Chip Mu Near Zero Metamaterial Lens, 2015 IEEE 4th Asia-Pacific Conference on Antennas and Propagation, 2015.07.02.
10. 織田 知樹, 飯笹 直人, GUAN CHAI EU, Haruichi Kanaya, 吉富邦明, Circularly Polarized One-Sided Directional Slot Array Antenna for 920MHz Application, 2015 IEEE 4th Asia-Pacific Conference on Antennas and Propagation, 2015.07.01.
11. Hany A. Atallah, Adel B. Abdel-Rahman, 吉富邦明, POKHAREL RAMESH KUMAR, Mutual Coupling Reduction between Microstrip Antenna Array Elements Using CSRRs-Based DGS Bandstop Filter, The Third International Japan-Egypt Conference on Electronics, Communications and Computers、JEC-ECC 2015, 2015.03.16.
12. 飯笹直人, 吉富邦明, 金谷晴一, Dual Band Slot Dipole Array Antenna for Wireless LAN, 第3回バイオメカニクス研究センター&エレクトロニクス実装学会九州支部合同研究会, 2015.02.06.
13. 飯笹直人, 吉富邦明, POKHAREL RAMESH KUMAR, 金谷晴一, 2 x 2 Slot Dipole Array Antenna with CPW for 2.4GHz Band, 電子情報通信学会マイクロ波研究会, 2014.12.05.
14. POKHAREL RAMESH KUMAR, 牟田 修, JIA HONGTING, MAHDIPOUR FARHAD, GOULART FERREIRA VICTOR MAURO, 吉富邦明, 金谷晴一, Ahmed Allam, 吉田啓二, Activities on Microwave Education and Research between Japan and Egypt ~ Partnership between Kyushu University, Japan and Egypt-Japan University of Science and Technology, Egypt ~, 電子情報通信学会マイクロ波研究会, 2014.11.21.
15. Hany A. Atallah, Adel B. Abdel-Rahman, 吉富邦明, POKHAREL RAMESH KUMAR, Novel Compact UWB Monopole RDRA for Cognitive Radio Spectrum Sensing Applications, 2014 IEEE Fourth International Conference on Consumer Electronics - Berlin (ICCE-Berlin), 2014.09.10.
16. 飯笹直人, Kuniaki Yoshitomi, Ramesh Kumar Pokharel, Haruichi Kanaya, High Gain 4 × 4 Slot Dipole Antenna Array in the 5GHz Band, 2014 Asia-Pacific Conference on Antennas and Propagation, 2014.07.28.
17. A. Barakat, A. Allam, H. Elsadek, Haruichi Kanaya, Hongting Jia, Kuniaki Yoshitomi, Ramesh Kumar Pokharel, Back radiation reduction of 60 GHz CMOS slot Antenna-on-Chip (AoC) using Artificial Dielectric Layer (ADL) for Area Reuse, 2014 IEEE International Symposium on Antennas and Propagation and USNC-URSI National Radio ScienceMeeting, 2014.07.06.
18. 金谷晴一, 藤田浩司, 井地口智詞, Keiji Yoshida, 吉富邦明, Akira Ishikawa, Shugo Fukagawa, Noriyuki Kodama, Akihiro Tahira, Compact Size UWB Planer Antenna on Flexible Substrate, 2014 IEEE International Symposium on Antennas and Propagation and USNC-URSI National Radio ScienceMeeting, 2014.07.06.
19. Tomoya Ijiguchi, Daisuke Kanemoto, Kuniaki Yoshitomi, Keiji Yoshida, POKHAREL RAMESH KUMAR, Akira Ishikawa, Shugo Fukagawa, Noriyuki Kodama, Akihiro Tahira, Haruichi Kanaya, Development of Circularly Polarized Planar Slot Antenna for 5.8 GHz-DSRC Application, 2013 Asia-Pacific Microwave Conference , 2013.11.08.
20. Kouji Fujita, Daisuke Kanemoto, Kuniaki Yoshitomi, Keiji Yoshida, Haruichi Kanaya, UWB Circularly Polarized Planar Antenna on Flexible Substrate, IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-Bio 2013), 2013.07.10.
21. Haruichi Kanaya, Kanemoto Daisuke, Kazuhiro Hayakawa, Keiji Yoshida, POKHAREL RAMESH KUMAR, Kuniaki Yoshitomi, Akira Ishikawa, Shugo Fukagawa, Noriyuki Kodama, Akihiro Tahira, Multi-Band Miniaturized Slot Antenna with Two-Stage Bandpass Filter, 2013 IEEE International Symposium on Antennas and Propagation and USNC-URSI National Radio ScienceMeeting, 2013.07.10.
22. Yuka Shinki, Daisuke Kanemoto, Keiji Yoshida, POKHAREL RAMESH KUMAR, Kuniaki Yoshitomi, Haruichi Kanaya, Wireless Power Transmission Circuit on a Small Planar Wide-Band Antenna, International technical conference of IEEE Region 10 (TENCON) 2013, 2013.10.24.
23. Shoichiro Tsukamoto, Naoto Iizasa, Kuniaki Yoshitomi, POKHAREL RAMESH KUMAR, Keiji Yoshida, Reiji Hattori, Haruichi Kanaya, Daisuke Kanemoto, Development of a Rectenna for Batteryless Electronic Paper, International technical conference of IEEE Region 10 (TENCON) 2013, 2013.10.24.
24. Emad Tammam, Yoshitomi Kuniaki, Ahmed Allam, Mohammed El-Sayed, Kanaya Haruichi, Yoshida Keiji, A Highly Miniaturized Planar Antenna With Dual Band-Notched Using Two Slot Types for UWB Wireless Communications
, 2012 Asia-Pacific Microwave Conference (APMC2012), 2012.12.06.
25. Emad Tammam, Yoshitomi Kuniaki, Ahmed Allam, Mohammed El-Sayed, Kanaya Haruichi, Yoshida Keiji, Miniaturization of a UWB Antenna With Dual Band-Notched at WLAN/WiMAX Frequency Bands, 2012 IEEE International Conference on Electronics Design, Systems and Applications (ICEDSA 2012), 2012.11.06.
26. Emad Tammam, Lingsheng Yang, Ahmed Allam, Mohammed Ragab, Yoshitomi Kuniaki, Pokharel Kumar Ramesh, Yoshida Keiji, Design of a Small Size UWB Antenna with Band-rejection Characteristics, JEC-ECC 2012 : 2012 Japan-Egypt Conference on Electronics, Communications and Computers , 2012.03.06.
27. Investigation of Low Impedance Line Structure Component Using a Circuit Model.
28. Investigation of Low Impedance Line Structure Component Using a Circuit Model.
Membership in Academic Society
  • The Japanese Society of Clinical Ecology