Akira ENOKIHARA


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 dividerLC-ladder circuitmulti-bandmulti-division
 Summary | Full Text:PDF(2MB)

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 chirpelectro-optic modulatorrat-raceMach-Zehnder interferometer
 Summary | Full Text:PDF(1.5MB)

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 modulatorssingle sideband modulationmicrowave photonicsbranch-line coupler
 Summary | Full Text:PDF(3MB)

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 componentsrat-race circuitloose couplingCRLH-TLwideband
 Summary | Full Text:PDF(2.1MB)

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 couplermatching networkCRLH-TLdual-bandequivalent admittance approachsize reduction
 Summary | Full Text:PDF(2MB)

Guided-Wave EO Intensity Modulator Using Coupled Microstrip Line Electrode of Higher-Order Harmonic Resonance Combined with Polarization-Reversed Structure
Akira ENOKIHARA Hiroyoshi YAJIMA Hiroshi MURATA Yasuyuki OKAMURA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2007/05/01
Vol. E90-C  No. 5  pp. 1096-1104
Type of Manuscript:  Special Section PAPER (Special Section on Recent Advances in Integrated Photonic Devices)
Category: LiNbO3 Devices
Keyword: 
EO modulatorresonant electrodehigher order harmonic resonancepolarization reversed structuretransit-time effectLiTaO3
 Summary | Full Text:PDF(729.7KB)

Guided-Wave Electro-Optic Modulators Using Novel Electrode Structure of Coupled Microstrip Line Resonator
Akira ENOKIHARA Hiroyoshi YAJIMA Hiroshi MURATA Yasuyuki OKAMURA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/03/01
Vol. E88-C  No. 3  pp. 372-378
Type of Manuscript:  Special Section PAPER (Special Section on Optical Signal-Processing Devices for Photonic Networks)
Category: 
Keyword: 
modulatoroptical waveguideresonator electrodemillimeter-waveradio-on-fiber
 Summary | Full Text:PDF(612KB)

26 GHz Bandpass Filter and Duplexer Using TM11δ Mode Dielectric Resonators with High-Q Performance and Compact Configuration
Akira ENOKIHARA Hideki NANBA Toshiaki NAKAMURA Kojiro OKUYAMA Toshio ISHIZAKI Tomoki UWANO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2003/11/01
Vol. E86-C  No. 11  pp. 2283-2291
Type of Manuscript:  PAPER
Category: Microwaves, Millimeter-Waves
Keyword: 
filterduplexermillimeter-waveTM11δ rectan-gular-modedielectric resonatorsurface mount
 Summary | Full Text:PDF(1.6MB)

High-Tc Superconducting Filters for Power Signal Transmission on Communication Base Station
Kentaro SETSUNE Akira ENOKIHARA Koichi MIZUNO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1998/10/25
Vol. E81-C  No. 10  pp. 1578-1583
Type of Manuscript:  INVITED PAPER (Special Issue on Low- and High-Temperature Superconductive Electron Devices and Their Applications)
Category: Analog Applications
Keyword: 
high temperature superconductorHTS filterdisc resonatorhigh power filter
 Summary | Full Text:PDF(692KB)

High-Tc Superconducting Planar Filter for Power Handling Capability
Akira ENOKIHARA Kentaro SETSUNE 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1996/09/25
Vol. E79-C  No. 9  pp. 1228-1232
Type of Manuscript:  INVITED PAPER (Special Issue on Toward Digital and Analog Applications of Superconductors)
Category: Analog applications
Keyword: 
high-Tc superconductorfilterplanar filterdual-mode resonatorpower handlingdisk resonatorintermodulation
 Summary | Full Text:PDF(451.2KB)