SAKAKIBARA Kunio

写真a

Affiliation Department etc.

Department of Electrical and Mechanical Engineering
Department of Electrical and Mechanical Engineering

Title

Professor

Graduate School

  •  
    -
    1996.03

    Tokyo Institute of Technology  Graduate School, Division of Science and Engineering  Dept. of Electrical and Electronic EngineerinDoctor's Course  Completed

Degree

  • Tokyo Institute of Technology -  Doctor of Engineering

External Career

  • 2000.11
    -
    2001.05

    University of Ulm   Guest Researcher  

  • 1996.04
    -
    2002.09

    TOYOTA Central Research and Development Laboratories Inc.   Researcher  

Field of expertise (Grants-in-aid for Scientific Research classification)

  • Communication/Network engineering

 

Papers

  • RF Performance of Layer-Structured Broadband Passive Millimeter-Wave Imaging System

    Kunio Sakakibara, Kunihiko Ohkawa, Yutaka Aoki, and Nobuyoshi Kikuma

    International Journal of Antennas and Propagation ( Hindawi Publishing Corporation )  2016   2015.12  [Refereed]

    Research paper (scientific journal)   Multiple Authorship

    Low profile and simple configuration are advantageous for RF module in passive millimeter-wave imaging system. High sensitivity over broad operation bandwidth is also necessary to detect right information from weak signal. We propose a broadband layer-structured module with low profile, simple structure, and ease of manufacture. This module is composed of a lens antenna and a detector module that consists of a detector circuit and a broadband microstrip-to-waveguide transition. The module forms a layer structure as a printed substrate with detector circuit is fixed between two metal plates with horn antennas and back-short waveguides. We developed a broadband passive millimeter-wave imaging module composed of a lens antenna and a detector module in this work. The gain and the antenna efficiency were measured, and the broadband operation was observed for the lens antenna. For the detector module, peak sensitivity was 8100 V/W. Furthermore, the detector module recognized a difference in the absorber’s temperature. The designs of the lens antenna and the detector module are presented and the RF performances of these components are reported. Finally, passive millimeter-wave imaging of a car, a human, and a metal plate in clothes is demonstrated in this paper.

  • Low-Sidelobe Design of Microstrip Comb-Line Antennas Using Stub-Integrated Radiating Elements in the Millimeter-Wave Band

    S. Sugawa, K. Sakakibara, N. Kikuma, H. Hirayama

    IEEE Transactions on Antennas and Propagation   60 ( 10 ) 4699 - 4709   2012.10  [Refereed]

    Research paper (scientific journal)   Multiple Authorship

    A novel radiating element with a matching circuit was developed for comb-line antennas of traveling-wave operation. In the design of low-sidelobe traveling-wave array antennas, large coupling is required for array elements of the comb-line antenna around the input port. Furthermore, the traveling-wave arrays, whose number of elements is small, also require large coupling because the radiation power for each array element is assigned to be much larger. However, wide radiating elements for large coupling perform poor impedance matching characteristics and radiate large cross polarization. Thus, we proposed a novel radiating element with matching stub in parallel to the radiating element to realize strong radiating power, low reflection, and low cross-polarization, simultaneously. The simulated and measured performances of low-sidelobe 14-element and 6-element antennas were demonstrated in this paper.

  • Millimeter-Wave Microstrip-Line-Fed Broadband Waveguide Aperture Antennas

    S. Yano, K. Sakakibara, N. Kikuma, and H. Hirayama

    IEICE Transactions on Communications   E95-B ( 1 ) 34 - 40   2012.01  [Refereed]

    Research paper (scientific journal)   Multiple Authorship

  • Broadband Millimeter-Wave Microstrip Comb-Line Antenna Using Corporate Feeding System with Center-Connecting

    A. Kunita, K. Sakakibara, N. Kikuma, and H. Hirayama

    IEICE Transactions on Communications   E95-B ( 1 ) 41 - 50   2012.01  [Refereed]

    Research paper (scientific journal)   Multiple Authorship

  • Transition from Waveguide to Two Microstrip Lines with Slot Radiators in the Millimeter-Wave Band

    Kazuyuki Seo, Kunio Sakakibara, Nobuyoshi Kikuma

    IEICE Transactions on Communications   E94-B ( 5 ) 1184 - 1193   2011.05  [Refereed]

    Research paper (scientific journal)   Multiple Authorship

  • Millimeter-wave Microstrip Comb-line Antenna Using Reflection-canceling Slit Structure

    Y. Hayashi, K. Sakakibara, M. Nanjo, S. Sugawa, N. Kikuma, and H. Hirayama

    IEEE Transactions on Antennas and Propagation   59 ( 2 ) 398 - 406   2011.02  [Refereed]

    Research paper (scientific journal)   Multiple Authorship

  • Narrow-Wall-Slotted Hollow-Waveguide Array Antenna Using Partially Parallel Feeding System in Millimeter-Wave Band

    Y. Ikeno, K. Sakakibara, N. Kikuma, H. Hirayama

    IEICE Transactions on Communications   E93-B ( 10 ) 2545 - 2553   2010.10  [Refereed]

    Research paper (scientific journal)   Multiple Authorship

  • Narrow-Wall-Connected Microstrip-to-Waveguide Transition Using V-Shaped Patch Element in Millimeter-Wave Band

    K. Seo, K. Sakakibara, N. Kikuma

    IEICE Transactions on Communications   E93-B ( 10 ) 2523 - 2530   2010.10  [Refereed]

    Research paper (scientific journal)   Multiple Authorship

  • Control of Power Dividing Ratio in Four-Way Power Divider for Feeding Microstrip Comb-Line Antenna

    Morihiko Nanjo, Kunio Sakakibara, Nobuyoshi Kikuma, Hiroshi Hirayama

    IEICE Transactions on Communications   E93-B ( 10 ) 2651 - 2654   2010.10  [Refereed]

    Research paper (scientific journal)   Multiple Authorship

Books

  • Microwave and Millimeter Wave Technology

    Igor Minin 他 (Part: Multiple Authorship )

    InTech  2010.03 ISBN: 978-953-7619-66-4

  • Radar Technology

    Guy Kouemou 他 (Part: Multiple Authorship )

    In-Tech  2009.12 ISBN: 978-953-307-029-2

Presentations

  • Rotman-lens-feeding Double-layer Low-profile Multibeam Millimeter-wave Microstrip Antenna Using Bow-tie Waveguide Microstrip Connections

    Kunio Sakakibara, Yuta Suzuki, Yasuhiro Imade, Nobuyoshi Kikuma

    2016 IEEE Asia-Pacific Conference on Applied Electromagnetics  (Langkawi, Malaysia)  2016.12  -  2016.12  IEEE

  • Design of Microstrip-input Taper-structures for Required Beam Shape in Rotman-lens Phase Shifter

    Yuta Suzuki, Kunio Sakakibara and Nobuyoshi Kikuma

    2016 International Symposium on Antennas and Propagation  (沖縄コンベンションセンター)  2016.10  -  2016.10  電子情報通信学会

  • Loss Reduction of Microstrip-to-Waveguide Transition Suppressing Leakage from Gap between Substrate and Waveguide by Choke Structure

    Yuta Mizuno, Kunio Sakakibara and Nobuyoshi Kikuma

    2016 International Symposium on Antennas and Propagation  (沖縄コンベンションセンター)  2016.10  -  2016.10  電子情報通信学会

  • Compact Planar Transmission-line Transition Direct-connecting from a Waveguide to Four Microstrip-lines

    Shigenori Kitanaka, Kunio Sakakibara and Nobuyoshi Kikuma

    2016 International Symposium on Antennas and Propagation  (沖縄コンベンションセンター)  2016.10  -  2016.10  電子情報通信学会

  • Design of Waveguide Shut Slot Arrays Formed on Copper-plated Dielectric Sticks in Millimeter-wave Band

    Yuta Miyachi, Kunio Sakakibara and Nobuyoshi Kikuma

    2016 International Symposium on Antennas and Propagation  (沖縄コンベンションセンター)  2016.10  -  2016.10  電子情報通信学会

  • Design of Broadband Planar Array Composed of 2x2 Slotted Cavities Fed by E-plane Waveguide Parallel-Feeding Circuit in Millimeter-wave Band

    Katsuhiro Miyazaki, Kunio Sakakibara and Nobuyoshi Kikuma

    2016 International Symposium on Antennas and Propagation  (沖縄コンベンションセンター)  2016.10  -  2016.10  電子情報通信学会

  • Traveling-wave Design of Cross-junction Power-dividers for Two dimensional Microstrip Planar Array with 45-degree Polarization in Submillimeter-wave Band

    Yuta Mouri, Shigenori Kitanaka, Kazumasa Shida, Kunio Sakakibara and Nobuyoshi Kikuma

    2016 International Symposium on Antennas and Propagation  (沖縄コンベンションセンター)  2016.10  -  2016.10  電子情報通信学会

  • Reduction of Reflection Loss from Dielectric Plate by Reflection-phase Control of Frequency Selective Surface

    Goro Nomoto, Masamu Chiba, Kunio Sakakibara and Nobuyoshi Kikuma

    2016 International Symposium on Antennas and Propagation  (沖縄コンベンションセンター)  2016.10  -  2016.10  電子情報通信学会

  • Millimeter-wave Planar Microstrip-to-waveguide Transition with Waveguide Connected on Microstrip Signal-line

    Kunio Sakakibara, Yuki Ishikawa, Yuta Mizuno, and Nobuyoshi Kikuma

    2016 URSI Asia-Pacific Radio Science Conference URSI AP-RASC 2016  (Seoul, Korea)  2016.08  -  2016.08  URSI

  • Bandwidth Enhancement of Partially Parallel-feeding Travelling-wave Array Using Waveguide Narrow-wall Cavity Slot on Iris in Millimeter-wave Band

    Kunio Sakakibara, Yuichi Hirayama, and Nobuyoshi Kikuma

    2016 IEEE AP-S International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting  (Fajardo, Puerto Rico)  2016.06  -  2016.07  IEEE

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Academic Activity

  • 2016.12
    -
    Now

    Institute of Electrical and Electronics Engineering  

  • 2009.01
    -
    2010.12

    Institute of Electrical and Electronics Engineering   IEEE APS Nagoya Chapter Treasurer

  • 2007.01
    -
    2008.12

    Institute of Electrical and Electronics Engineering   IEEE APS Nagoya Chapter Secretary