All Stories

  1. Miniature dual-band bandpass filter using modified quarter-wavelength SIRs with controllable passbands

    Article • Electronics Letters, October 2018, the Institution of Engineering and Technology (the IET)

    Dr. Masataka Ohira, Baoping Ren

  2. Theory and Experiment of Two-Section Two-Resistor Wilkinson Power Divider With Two Arbitrary Frequency Bands

    Article • IEEE Transactions on Microwave Theory and Techniques, March 2018, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Masataka Ohira

  3. Authors' Reply

    Article • IEEE Microwave and Wireless Components Letters, January 2018, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Masataka Ohira

  4. Coupling-Matrix-Based Systematic Design of Single-DC-Bias-Controlled Microstrip Higher Order Tunable Bandpass Filters With Constant Absolute Bandwidth and Transmission Zeros

    Article • IEEE Transactions on Microwave Theory and Techniques, January 2018, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Masataka Ohira

  5. Coupled microstrip line Wilkinson power divider with open-stubs for compensation

    Article • Electronics Letters, July 2016, the Institution of Engineering and Technology (the IET)

    Dr. Masataka Ohira

  6. A New Design Formula of Coupling Coefficient between Antenna and Resonator for Efficient Design of Filtering Antenna

    Article • IEICE Transactions on Electronics, January 2016, Institute of Electronics, Information and Communications Engineers (IEICE)

    Dr. Masataka Ohira

  7. Accurate Schiffman-type section design approach for microstrip line Wilkinson power divider

    Article • IEICE Electronics Express, January 2016, Institute of Electronics, Information and Communications Engineers (IEICE)

    Dr. Masataka Ohira

  8. A novel microstrip filter structure consisting of transversal resonator array and its fully canonical bandpass filter design

    Article • May 2015, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Masataka Ohira

  9. Design of a quasi-millimeter-wave UWB bandpass filter using microstrip dual-mode ring resonator and half-wavelength resonators

    Article • August 2014, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Masataka Ohira

  10. Microwave propagation characterization in automotive engine compartment for wireless harness communications

    Article • July 2014, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Masataka Ohira

  11. Physical interpretation of frequency-dependent S/L coupling in multi-mode bandpass filter and its design approach for generation of multiple finite transmission zeros

    Article • June 2014, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Masataka Ohira

  12. A Compact Three-Mode H-Shaped Resonator Bandpass Filter Having High Passband Selectivity with Four Transmission Zeros and Wide Stopband Characteristic

    Article • IEICE Transactions on Electronics, January 2014, Institute of Electronics, Information and Communications Engineers (IEICE)

    Dr. Masataka Ohira

  13. Authors' reply

    Article • IEEE Transactions on Microwave Theory and Techniques, December 2013, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Masataka Ohira

  14. A cutoff-waveguide bandpass filter using antiresonant elements for sharp passband skirt and wide stopband characteristics

    Article • November 2013, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Masataka Ohira

  15. A bandwidth-enhanced low-profile antenna for in-machine wireless harness communications and its clearance distance evaluation

    Article • July 2013, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Masataka Ohira

  16. Deterministic extraction of direct source/load coupling and its application to multi-mode filter designs based on transversal array network theory

    Article • June 2013, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Masataka Ohira

  17. A Parameter-Extraction Method for Microwave Transversal Resonator Array Bandpass Filters With Direct Source/Load Coupling

    Article • IEEE Transactions on Microwave Theory and Techniques, May 2013, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Masataka Ohira

  18. Compact bandpass filter with a sharp roll-off response using multi-path coupling scheme of H-shaped resonator

    Article • December 2012, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Masataka Ohira

  19. A novel compact high-performance microstrip 26GHz ultra-wideband (UWB) bandpass filter for vehicle radar systems

    Article • September 2012, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Masataka Ohira

  20. Novel multi-mode ring resonator transversal array bandpass filter with very high skirt selectivity using multiple transmission zeros

    Article • June 2012, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Masataka Ohira

  21. Efficient Gain Optimization Techniques for Azimuth Beam/Null Steering of Inverted-F Multiport Parasitic Array Radiator (MuPAR) Antenna

    Article • IEEE Transactions on Antennas and Propagation, March 2012, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Masataka Ohira

  22. Resonant-Mode Characteristics of a New Three-Mode Hybrid Microstrip/Slotline Resonator and Novel Realization of Compact Bandpass Filter with Four Transmission Zeros

    Article • IEICE Transactions on Electronics, January 2012, Institute of Electronics, Information and Communications Engineers (IEICE)

    Dr. Masataka Ohira

  23. Experimental Characterization of Microwave Radio Propagation in ICT Equipment for Wireless Harness Communications

    Article • IEEE Transactions on Antennas and Propagation, December 2011, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Masataka Ohira

  24. Eigen-mode analysis of a novel three-mode microstrip/slot-line resonator and the development of a compact bandpass filter with multiple transmission zeros and wide stopband property

    Article • June 2011, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Masataka Ohira

  25. A NEW FREQUENCY SELECTIVE WINDOW FOR CONSTRUCTING WAVEGUIDE BANDPASS FILTERS WITH MULTIPLE ATTENUATION POLES

    Article • Progress In Electromagnetics Research C, January 2011, EMW Publishing

    Dr. Masataka Ohira

  26. Evolutionary Generation of Subwavelength Planar Element Loaded Monopole Antenna

    Article • IEEE Antennas and Wireless Propagation Letters, January 2011, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Masataka Ohira

  27. A Novel Feeding Structure to Generate Multiple Transmission Zeros for Miniature Waveguide Bandpass Filters Composed of Frequency-Selective Surfaces

    Article • IEICE Transactions on Electronics, January 2011, Institute of Electronics, Information and Communications Engineers (IEICE)

    Dr. Masataka Ohira

  28. 60-GHz Wideband Substrate-Integrated-Waveguide Slot Array Using Closely Spaced Elements for Planar Multisector Antenna

    Article • IEEE Transactions on Antennas and Propagation, March 2010, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Masataka Ohira

  29. Study on equivalent circuit of coaxial line to post-wall waveguide transition in 60-GHz band

    Article • Microwave and Optical Technology Letters, January 2010, Wiley

    Dr. Masataka Ohira

  30. 60-GHz-Band Switched-Beam Eight-Sector Antenna with SP8T Switch for 180° Azimuth Scan

    Article • IEICE Transactions on Communications, January 2010, Institute of Electronics, Information and Communications Engineers (IEICE)

    Dr. Masataka Ohira

  31. Multi-Resonator Generation by Genetic Optimization for Application to Planar-Circuit Bandpass Filters

    Article • IEEJ Transactions on Fundamentals and Materials, January 2009, Institute of Electrical Engineers of Japan (IEE Japan)

    Dr. Masataka Ohira

  32. Compact High-Performance Planar Bandpass Filters with Arbitrarily-Shaped Conductor Patches and Slots

    Article • October 2008, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Masataka Ohira

  33. Varactor-loaded inverted-F multiport parasitic array radiator antenna

    Article • June 2007, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Masataka Ohira

  34. Multiple-Step Rectangular Horn with Two Orthogonal Sectoral Tapers for Elliptical Beam

    Article • IEICE Transactions on Electronics, February 2007, Institute of Electronics, Information and Communications Engineers (IEICE)

    Dr. Masataka Ohira

  35. Multi-resonator generation in arbitrarily-shaped planar-circuit filters by genetic optimization

    Article • January 2007, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Masataka Ohira

  36. Multi-resonator generation in arbitrarily-shaped planar-circuit filters by genetic optimization

    Article • January 2007, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Masataka Ohira

  37. Planar-circuit bandpass filters consisting of arbitrarily shaped elements

    Article • Electronics and Communications in Japan (Part II Electronics), January 2007, Wiley

    Dr. Masataka Ohira

  38. A novel waveguide bandpass filter with multiple attenuation poles using four-armed square-loop FSSs

    Article • Electronics and Communications in Japan (Part II Electronics), January 2007, Wiley

    Dr. Masataka Ohira

  39. A Novel Resonant Window Having Dual-Behavior Resonance for Pseudo-Elliptic Waveguide Filter

    Article • September 2006, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Masataka Ohira

  40. Novel Dual-Resonant and Dual-Polarized Frequency Selective Surface Using Eight-Legged Element and Its Experimental Verification

    Article • IEICE Transactions on Electronics, December 2005, Institute of Electronics, Information and Communications Engineers (IEICE)

    Dr. Masataka Ohira

  41. Novel waveguide filters with multiple attenuation poles using dual-behavior resonance of frequency-selective surfaces

    Article • IEEE Transactions on Microwave Theory and Techniques, November 2005, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Masataka Ohira

  42. Analysis of frequency selective surface with arbitrarily shaped element by equivalent circuit model

    Article • Electronics and Communications in Japan (Part II Electronics), January 2005, Wiley

    Dr. Masataka Ohira

  43. Multiband Single-Layer Frequency Selective Surface Designed by Combination of Genetic Algorithm and Geometry-Refinement Technique

    Article • IEEE Transactions on Antennas and Propagation, November 2004, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Masataka Ohira

  44. Multiband Single-layer Frequency Selective Surface designed by Optimization Technique.

    Article • IEEJ Transactions on Fundamentals and Materials, January 2003, Institute of Electrical Engineers of Japan (IEE Japan)

    Dr. Masataka Ohira