白井研究室の研究業績
2016年度(平成28年度)


白井研究室で行われた研究のうち，論文等の形で学術論文誌等に公表されたものを紹介します.
  1. 論文 等
    1. 2016. 8. 1; H. B. Chu, H. Shirai, and D. N. Chien ``New Estimation Method for the Operational Low Frequency End of Antipodal Vivaldi Antennas," IEICE Trans. Electron., Vol. E99-C, No. 8, pp. 947-955, Aug. 2016.
      [Abstract]: A simple approach is presented for designing an antipodal Vivaldi antenna in this paper. A new and better estimation of the low frequency end of the operational range is shown. Final dimensions of the antenna parameters are determined by using the High Frequency Structure Simulator (HFSS). The proposed antenna has a simple configuration but exhibits low return loss, good radiation characteristics, and high and flat gain in the operating ultra wideband frequency range (3.1-10.6 GHz). Lastly, the fabrication has been done along with the specification to confirm the properties by measurements.
    2. 2016. 10. 21; H. B. Chu and H. Shirai, ``Analysis and Design of E-CRLH TL Characteristics with New Closed-Form Solutions," Progress In Electromagnetics Research C, Vol. 68, pp. 163-178, Oct., 2016.
      [Abstract] In this study, new closed-form solutions are presented for deriving inductance and capacitance elements of the extended-composite right/left handed transmission line (E-CRLH TL) unit cell from the cut-off frequencies of right-handed (RH) and left-handed (LH) bands. The characteristics of the E-CRLH TL are investigated for unbalanced, balanced, and mixed cases. The dispersion diagram, the Bloch impedance, S-parameters are analyzed by the TL, circuit theories and the Bloch-Floquet theorem. Lastly, the usefulness of our method has been shown in detail by designing the desired characteristics for various cases.
    3. 2016. 11. 1; H. Shirai, M. Shimizu and R. Sato, ``Hybrid Ray-Mode Analysis of E-Polarized Plane Wave Diffraction by a Thick Slit," IEEE Trans. on Antennas and Propagation, Vol.64, No. 11, pp. 4828-4835, Nov., 2016.
      [Abstract] A high-frequency asymptotic method has been applied to formulate E-polarized plane wave diffraction by a thick slit. The slit structure is regarded as an open-ended parallel plane waveguide cavity, and the excitation of the waveguide modes and their reradiation are derived from a ray-mode conversion technique. Comparison with another method reveals the validity and effectiveness of our formulation.
    4. 2017. 1. 1; K. Fujita and H. Shirai, ``Theoretical Limit of the Radiation Efficiency for Electrically Small Self-Resonant Spherical Surface Antennas," IEICE Trans. Electron., Vol. E100-C, No. 1, pp. 20-26, Jan., 2017.
      [Abstract] Theoretical maximum radiation efficiency of electrically small spherical surface antennas has been derived in this study. The current on the antenna surface is described in terms of vector spherical harmonics, and the radiated and the dissipated powers are calculated to obtain the radiation efficiency. It has been found that non-resonant TM_{1m} mode shows the best radiation efficiency, and a proper combination of TM_{10} and TE_{10} modes establishes a resonant spherical surface antenna whose radiation efficiency is bounded by those values of non-resonant TM_{10} and TE_{10} modes. As a practical example of the spherical surface antennas, the radiation efficiency of the spherical helix antennas has also been computed to check the validity of our formulation.
    5. 2017. 1. 1; A. N. Nguyen and H. Shirai, ``A Free Space Permittivity Measurement at Microwave Frequencies for Solid Materials," IEICE Trans. Electron., Vol. E100-C, No. 1, pp. 52-59, Jan., 2017.
      [Abstract] A broadband approach to estimate the relative permittivity of dielectric cuboids has been proposed for materials of weak frequency dispersive characteristic. Our method involves a numerical iterative scheme with appropriate initial values carefully selected to solve for the relative permittivity in a wide range of frequencies. Good agreements between our method and references have been observed for nylon and acrylic samples. An applicable range relation between the minimal thickness, the frequency range and the dielectric property of the material has also been discussed.

  2. 国際会議発表 等
    1. 2016. 6. 30; H. Shirai, M. Shimizu, and R. Sato ``Evanescent Modal Effect to E Polarized Plane Wave Diffraction by a Wide and Thick Slit," Proc. of 2016 IEEE International Symposium on Antennas and Propagation, pp.1503-1504, Puerto Rico, USA.
      DOI: 10.1109/APS.2016.7696458
    2. 2016. 7. 5; H. Shirai, M. Shimizu, and R. Sato ``Ray-mode Conversion Technique Applied to Thick Slit Diffraction," Proc. of the 16th International Conference on Mathematical Methods in Electromagnetic Theory, pp.43-45, Lviv, Ukraine.
      DOI: 10.1109/MMET.2016.7544088
    3. 2016. 8. 18; H. Shirai, M. Shimizu, and R. Sato ``Diffraction by Thick and Loaded Slit -E-polarization Case-," Proc. of International Symposium on Electromagnetic Theory (EMTS 2016), pp.665-667, Espoo, Finland.
      DOI: 10.1109/URSI-EMTS.2016.7571484
    4. 2016. 8. 24; Z. Zheng, and H. Shirai ``Far Field Radiation Pattern Analysis of an Antenna Installed in an Automobile," Proc. of 2016 URSI Asia-Pacific Radio Science Conference (URSI AP-RASC 2016), pp.1038-1041, Seoul, Korea.
    5. 2016. 9. 19; H. B. Chu, and H. Shirai ``Novel Closed-Form Solutions for Designing Extended-Composite Right/Left-Handed Transmission Lines," Proc. of 2016 International Conference on Electromagnetics in Advanced Applications, pp.349-352, Cairns, Australia.
      DOI: 10.1109/ICEAA.2016.7731395
    6. 2016. 10. 25; H. N. Quang and H. Shirai, ``A Compact D-CRLH Metamaterial Antenna for WLAN and WiMAX Multiband," Proc. of 2016 International Symposium on Antennas and Propagation (ISAP 2016), pp. 32-33, Okinawa, Japan.
    7. 2016. 10. 27; K. Fujita and H. Shirai, ``Radiation Efficiency of Multi-arm Open-ended Spherical Helix Antennas," Proc. of 2016 International Symposium on Antennas and Propagation (ISAP 2016), pp. 722-723, Okinawa, Japan.
    8. 2016. 10. 27; R. Sato and H. Shirai, ``Electromagnetic Scattering by Simplified Crack Models on Conducting Ground Plane," Proc. of 2016 International Symposium on Antennas and Propagation (ISAP 2016), pp. 582-583, Okinawa, Japan.
    9. 2017. 3. 9; R. Sato and H. Shirai, ``Efficient Approximate Solution of Scattering Field by Three-layered Dielectric Slab for Accurate Propagation Analysis," Proc. of 2017 International Conference on Computational Electromagnetics (ICCEM 2017), CDROM, Kumamoto, Japan.

  3. 学会, 研究会発表 等
    1. 2016. 9. 20; 藤田 佳祐，白井 宏，``2種類の小型球面ヘリカルアンテナにおける放射効率,'' 2016電子情報通信学会 ソサイエティ大会 講演論文集，B-1-35, CDROM． 　
    2. 2016. 9. 22; 佐藤 亮一，白井 宏，``屋内伝搬問題に対する簡易レイランチング法の高効率化,'' 2016電子情報通信学会 ソサイエティ大会 講演論文集，CS-1-2, CDROM． 　
    3. 2016. 11. 17; 清水 将行，白井 宏，佐藤 亮一，``誘電体が装荷された厚みのある導体スリットによるE平面波回折,'' 電子情報通信学会 電磁界理論研究会，研究会資料，EMT2016-47，pp.55-60． 　
    4. 2016. 11. 18; 木角 飛鳥，白井 宏，``後方散乱量からの誘電体柱状物体の形状推定,'' 電子情報通信学会 電磁界理論研究会，研究会資料，EMT2016-57，pp.123-128． 　
    5. 2016. 11. 18; 石藤 太地，鄭 子才，白井 宏，``FDTD解析のための効率のよい車両モデル化について,'' 電子情報通信学会 電磁界理論研究会，研究会資料，EMT2016-65，pp.177-182． 　
    6. 2017. 3. 22; ヌェン　ヌゴック　アン，白井 宏， ``自由空間法による誘電率推定についての研究,'' 2017年 電子情報通信学会総合大会 講演論文集，CS-1-3, CDROM．
    7. 2017. 3. 22; 鄭 子才，白井 宏， ``FDTD法のデルタギャップ給電のギャップ長が入力インピーダンスに及ぼす影響,'' 2017電子情報通信学会 総合大会 講演論文集，C-1-12, CDROM．

  4. 博士論文
    1. 2017. 3. 24; 藤田 佳祐, ``電気的小型アンテナの放射効率向上に関する研究," 博士論文，中央大学 理工学研究科．
    2. 2017. 3. 24; ヌェン　ヌゴック　アン, ``マイクロ波における誘電率推定に関する研究," 博士論文，中央大学 理工学研究科．

  5. 修士論文
    1. 2017. 3. 24; 遠藤 大地， ``回折波を考慮した建物内部における電磁波伝搬解析," 修士論文，中央大学 理工学研究科．
    2. 2017. 3. 24; 木角 飛鳥， ``後方レーダ散乱量を用いた誘電体柱状物体の形状推定," 修士論文，中央大学 理工学研究科．
    3. 2017. 3. 24; 清水 将行， ``媒質が装荷された厚みのある導体スリットによる平面波回折," 修士論文，中央大学 理工学研究科．
    4. 2017. 3. 24; 林 孝洋， ``SBR法による屋内の壁厚を考慮した電磁波伝搬推定," 修士論文，中央大学 理工学研究科．

  6. 卒業論文
    1. 2017. 3. 24; 糀本 宥仁，柴田 晃輔， ``FDTD法におけるモデル作成の効率化," 卒業論文，中央大学 理工学部 電気電子情報通信工学科．
    2. 2017. 3. 24; 高橋 正樹，山田 雄太， ``FDTD法による分割セルサイズの影響について," 卒業論文，中央大学 理工学部 電気電子情報通信工学科．
    3. 2017. 3. 24; 濱田 惇司，矢崎 俊介，吉澤 穰二， ``中央大学後楽園キャンパスにおけるSBR法を用いた電磁波伝搬解析," 卒業論文，中央大学 理工学部 電気電子情報通信工学科．
    4. 2017. 3. 24; 和田 正之, ``主反射面の傾斜角度変化におけるRCS値への影響について," 卒業論文，中央大学 理工学部 電気電子情報通信工学科．
    5. 2017. 3. 24; 曲谷 慧, ``埋設された金属パイプの位置推定について," 卒業論文，中央大学 理工学部 電気電子情報通信工学科．

  7. その他