IEICE Trans

Tadashi KAWAI

Mach-Zehnder Optical Modulator Integrated with Tunable Multimode Interference Coupler of Ti:LiNbO₃ Waveguides for Controlling Modulation Extinction Ratio Anna HIRAI Yuichi MATSUMOTO Takanori SATO Tadashi KAWAI Akira ENOKIHARA Shinya NAKAJIMA Atsushi KANNO Naokatsu YAMAMOTO
Publication: Publication Date: 2022/08/01 Vol. E105-C No. 8 pp. 385-388 Type of Manuscript: BRIEF PAPER Category: Lasers, Quantum Electronics Keyword: multimode interference (MMI), optical modulator, optical coupler, titanium diffused LiNbO₃, tuning, extinction ratio, optical single-sideband (SSB) modulation,
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Electro-Optic Modulator for Compensation of Third-Order Intermodulation Distortion Using Frequency Chirp Modulation Daichi FURUBAYASHI Yuta KASHIWAGI Takanori SATO Tadashi KAWAI Akira ENOKIHARA Naokatsu YAMAMOTO Tetsuya KAWANISHI
Publication: Publication Date: 2020/11/01 Vol. E103-C No. 11 pp. 653-660 Type of Manuscript: Special Section PAPER (Special Section on Opto-electronics and Communications for Future Optical Network) Category: Keyword: electro-optic modulator, third-order intermodulation distortion, dual parallel Mach-Zehnder modulator, frequency chirp, rat race circuit,
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A 920MHz Lumped-Element Wilkinson Power Divider Utilizing LC-Ladder Circuits Tadashi KAWAI Kensuke NAGANO Akira ENOKIHARA
Publication: Publication Date: 2018/10/01 Vol. E101-C No. 10 pp. 801-804 Type of Manuscript: BRIEF PAPER Category: Keyword: wilkinson power divider, lumped-element, LC-ladder circuit,
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Design of Multi-Way LC-Ladder Dividers with Multi-Band Operation Yosuke OKADA Tadashi KAWAI Akira ENOKIHARA
Publication: Publication Date: 2017/10/01 Vol. E100-C No. 10 pp. 893-900 Type of Manuscript: Special Section PAPER (Special Section on Microwave and Millimeter-Wave Technology) Category: Keyword: power divider, LC-ladder circuit, multi-band, multi-division,
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Low Chirp Modulation by Electro-Optic Intensity Modulator Using Microwave 180-Degree Hybrid Directly Formed on LiNbO₃ Substrate Akira ENOKIHARA Masashi YAMAMOTO Tadashi KAWAI Tetsuya KAWANISHI
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2015/08/01 Vol. E98-C No. 8 pp. 777-782 Type of Manuscript: Special Section PAPER (Special Section on Microwave Photonics) Category: MWP Device and Application Keyword: light-frequency chirp, electro-optic modulator, rat-race, Mach-Zehnder interferometer,
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Compact Electro-Optic Single Sideband Modulators Utilizing Miniaturized Branch-Line Couplers on LiNbO₃ Substrate Katsuyuki YAMAMOTO Tadashi KAWAI Akira ENOKIHARA Tetsuya KAWANISHI
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2015/08/01 Vol. E98-C No. 8 pp. 769-776 Type of Manuscript: Special Section PAPER (Special Section on Microwave Photonics) Category: MWP Device and Application Keyword: electro-optic modulators, single sideband modulation, microwave photonics, branch-line coupler,
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Parallel Ring-Line Rat-Race Circuit with Very Loose Coupling Utilizing Composite Right-/Left-Handed Transmission Lines Tadashi KAWAI Yuma SUMITOMO Akira ENOKIHARA Isao OHTA Kei SATOH Yasunori SUZUKI Hiroshi OKAZAKI Shoichi NARAHASHI
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2014/10/01 Vol. E97-C No. 10 pp. 965-971 Type of Manuscript: Special Section PAPER (Special Section on Recent Progress in Microwave and Millimeter-wave Technologies) Category: Keyword: microwave passive components, rat-race circuit, loose coupling, CRLH-TL, wideband,
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Design and Fabrication of PTFE-Filled Waveguide Components by SR Direct Etching Mitsuyoshi KISHIHARA Hiroaki IKEUCHI Yuichi UTSUMI Tadashi KAWAI Isao OHTA
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2012/01/01 Vol. E95-C No. 1 pp. 122-129 Type of Manuscript: PAPER Category: Microwaves, Millimeter-Waves Keyword: X-ray lithography, bandpass filters, directional couplers, sputtering, dielectric materials,
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Design of an H-Plane Waveguide Intersection with High Isolation Hiroaki IKEUCHI Tadashi KAWAI Mitsuyoshi KISHIHARA Isao OHTA
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2011/10/01 Vol. E94-C No. 10 pp. 1572-1578 Type of Manuscript: Special Section PAPER (Special Section on Microwave and Millimeter-Wave Technology) Category: Passive Devices and Circuits Keyword: microwave, waveguide circuit, waveguide intersection, crossover, SIW,
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Band-Broadening Design Technique of CRLH-TLs Dual-Band Branch-Line Couplers Using CRLH-TLs Matching Networks Tadashi KAWAI Miku NAKAMURA Isao OHTA Akira ENOKIHARA
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2010/07/01 Vol. E93-C No. 7 pp. 1072-1077 Type of Manuscript: Special Section PAPER (Special Section on Recent Progress in Microwave and Millimeter-Wave Technologies) Category: Keyword: branch-line coupler, matching network, CRLH-TL, dual-band, equivalent admittance approach, size reduction,
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Fabrication of Wide Band Metallic Bend Waveguide with Asymmetric In-Line Dielectric Rods Yoshihiro KOKUBO Tadashi KAWAI
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2009/12/01 Vol. E92-C No. 12 pp. 1538-1540 Type of Manuscript: BRIEF PAPER Category: Microwaves, Millimeter-Waves Keyword: dielectric rods, cylindrical array, single mode, asymmetry, waveguide,
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Wide Band Metallic Waveguide with Asymmetric In-Line Dielectric Rods Yoshihiro KOKUBO Tadashi KAWAI
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2008/12/01 Vol. E91-C No. 12 pp. 1966-1968 Type of Manuscript: LETTER Category: Microwaves, Millimeter-Waves Keyword: dielectric rods, cylindrical array, single mode, asymmetry,
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Dual-Band Wilkinson Power Dividers Using a Series RLC Circuit Tadashi KAWAI Yasuaki NAKASHIMA Yoshihiro KOKUBO Isao OHTA
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2008/11/01 Vol. E91-C No. 11 pp. 1793-1797 Type of Manuscript: Special Section PAPER (Special Section on Microwave and Millimeter-wave Technologies) Category: Keyword: microwave passive components, dual-band, power divider, Wilkinson power divider,
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Parallel Coupled Microstrip Couplers Compensated with Periodic Floating-Conductors on Coupled Edges Takao FUJII Isao OHTA Tadashi KAWAI Yoshihiro KOKUBO
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2008/05/01 Vol. E91-C No. 5 pp. 780-787 Type of Manuscript: PAPER Category: Microwaves, Millimeter-Waves Keyword: artificial coupled-line, directional couplers, microstrip couplers, parallel coupled lines, periodically loading,
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Miniature Broad-Band CPW 3-dB Branch-Line Couplers in Slow-Wave Structure Takao FUJII Isao OHTA Tadashi KAWAI Yoshihiro KOKUBO
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2007/12/01 Vol. E90-C No. 12 pp. 2245-2253 Type of Manuscript: Special Section PAPER (Special Section on Recent Technologies for Microwave and Millimeter-wave Passive Devices) Category: Keyword: coplanar waveguides, directional couplers, hybrids, equivalent admittance, microwave circuits, slow-wave structure,
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Economic Setup for a Dual-Band Metallic Waveguide with Dual In-Line Dielectric Rods Yoshihiro KOKUBO Sotaro YOSHIDA Tadashi KAWAI
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2007/12/01 Vol. E90-C No. 12 pp. 2261-2262 Type of Manuscript: Special Section LETTER (Special Section on Recent Technologies for Microwave and Millimeter-wave Passive Devices) Category: Keyword: bend waveguide, cylindrical array, dielectric rod, economy,
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Design of Quadrature Hybrids and Directional Couplers Based on the Equivalent Admittance Approach Isao OHTA Tadashi KAWAI
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2005/01/01 Vol. E88-C No. 1 pp. 2-14 Type of Manuscript: INVITED PAPER (Special Section on Recent Trends of Microwave and Millimeter-Wave Passive Circuit Components and Technologies for Improvement of Characteristics) Category: Keyword: microwave passive component, directional coupler, hybrid, microwave integrated circuit, equivalent admittance approach,
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Broadband Multi-Way Microstrip Power Dividers Mitsuyoshi KISHIHARA Kuniyoshi YAMANE Isao OHTA Tadashi KAWAI
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2005/01/01 Vol. E88-C No. 1 pp. 20-27 Type of Manuscript: Special Section PAPER (Special Section on Recent Trends of Microwave and Millimeter-Wave Passive Circuit Components and Technologies for Improvement of Characteristics) Category: Keyword: power dividers, microstrip components, multiport circuits, Chebyshev transformers, design automation,
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A New Wide-Band and Reduced-Size Hybrid Ring Tadashi KAWAI Isao OHTA
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2003/02/01 Vol. E86-C No. 2 pp. 134-138 Type of Manuscript: Special Section PAPER (Special Issue on Circuit and Device Technology for High-Speed Wireless Communication) Category: Passive (Coupler) Keyword: hybrid ring, equivalent admittance, uniplanar circuit, phase inverter, broadband,
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Asymmetrical Coupled-HNRD-Guide Directional Couplers with Flat Coupling Mitsuyoshi KISHIHARA Isao OHTA Tadashi KAWAI Kuniyoshi YAMANE
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2003/02/01 Vol. E86-C No. 2 pp. 126-133 Type of Manuscript: Special Section PAPER (Special Issue on Circuit and Device Technology for High-Speed Wireless Communication) Category: Passive (Coupler) Keyword: NRD guide, transverse resonance technique, directional coupler, millimeter wave, coupled-line,
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A Novel 180-Degree 3 dB Hybrid Using a Cylindrical Cavity Mitsuyoshi KISHIHARA Tadashi KAWAI Yoshihiro KOKUBO Isao OHTA
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 1999/07/25 Vol. E82-C No. 7 pp. 1148-1153 Type of Manuscript: Special Section PAPER (Special Issue on Microwave and Millimeter Wave Technology) Category: Passive Devices and Circuits Keyword: waveguide, waveguide component, E-plane planar circuit, hybrid,
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A Power-Combining system of Four Oscillators Using an Eight-Port Hybrid Isao OHTA Tadashi KAWAI Yoshihiro KOKUBO
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 1996/10/25 Vol. E79-C No. 10 pp. 1449-1454 Type of Manuscript: PAPER Category: Microwave and Millimeter Wave Technology Keyword: microwave, microwave oscillator, power combining, parallel running, mutual synchronization,
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