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1

Low resistance ohmic contacts to high-Tc superconducting thin films

Tazoh, Y., Aihara, K., Miyabara, K., Hohkawa, K., Oshima, M.

Journal:

IEEE Transactions on Magnetics

Year:

1989

Language:

english

File:

PDF, 305 KB

english, 1989

2

Abrikosov vortex memory with improved sensitivity and reduced write current levels

Miyahara, K., Mukaida, M., Tokumitsu, M., Kubo, S., Hohkawa, K.

Journal:

IEEE Transactions on Magnetics

Year:

1987

Language:

english

File:

PDF, 287 KB

english, 1987

3

Design on semiconductor coupled SAW convolver

K. Hohkawa, T. Suda, Y. Aoki, C. Hong, C. Kaneshiro, K. Koh

Journal:

IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control

Year:

2002

Language:

english

File:

PDF, 542 KB

english, 2002

4

[IEEE 2007 IEEE Ultrasonics Symposium Proceedings - New York, NY, USA (2007.10.28-2007.10.31)] 2007 IEEE Ultrasonics Symposium Proceedings - P3I-3 Wafer Level Chip Size Packaging of SAW Devices Using Low Temperature Sacrifice Process

Koh, K., Yamazaki, T., Hohkawa, Y.

Year:

2007

Language:

english

File:

PDF, 216 KB

english, 2007

5

Semiconductor Film Bonding Technology and Application in Two-axis Hall Sensor Fabrication

Koh, Keishin, Matushita, Takashi, Hohkawa, Koji

Journal:

MRS Proceedings

Year:

2008

Language:

english

File:

PDF, 723 KB

english, 2008

6

Fabrication of YBaCuO/CeO2 multilayer structure for via structure and YBaCuO wiring

Eiji Fujimoto, Tsutomu Nakajima, Toshikazu Yamada, Hiroshi Sato, Kohji Hohkawa, Hiroshi Akoh

Journal:

Physica C: Superconductivity

Year:

2002

Language:

english

File:

PDF, 178 KB

english, 2002

7

An interferometer direct-coupled Josephson logic gate

Kohji Hohkawa, Akira Ishida

Journal:

Electronics and Communications in Japan (Part I: Communications))

Year:

1983

Language:

english

File:

PDF, 496 KB

english, 1983

8

A Josephson multiplexer with AC-powered master-slave latches

Akahori, Y., Hohkawa, K., Nakanishi, T., Fujita, S.

Journal:

IEEE Transactions on Electron Devices

Year:

1988

Language:

english

File:

PDF, 831 KB

english, 1988

9

A Josephson adder employing high-gain direct-coupled logic gate

Hohkawa, K., Nitta, J., Ishida, A.

Journal:

IEEE Transactions on Electron Devices

Year:

1984

Language:

english

File:

PDF, 576 KB

english, 1984

10

A Josephson dual-phase ac-powered logic network using special latch circuits

Akahori, Y., Hohkawa, K.

Journal:

IEEE Transactions on Electron Devices

Year:

1985

Language:

english

File:

PDF, 604 KB

english, 1985

11

A Josephson current-injection three-input AND gate

Akahori, Y., Hohkawa, K.

Journal:

IEEE Transactions on Electron Devices

Year:

1987

Language:

english

File:

PDF, 614 KB

english, 1987

12

Temperature-Compensated SAW Oscillator Construction Employing Multiple Resonators

Hohkawa, K., Yoshikawa, S.

Journal:

IEEE Transactions on Sonics and Ultrasonics

Year:

1979

Language:

english

File:

PDF, 536 KB

english, 1979

13

Surface Acoustic Waves in Reverse-Biased AlGaN/GaN Heterostructures

Shigekawa, N., Nishimura, K., Yokoyama, H., Hohkawa, K.

Journal:

IEEE Transactions on Electron Devices

Year:

2008

Language:

english

File:

PDF, 442 KB

english, 2008

14

SAW Filters Composed of Interdigital Schottky and Ohmic Contacts on AlGaN/GaN Heterostructures

Shigekawa, N., Nishimura, K., Suemitsu, T., Yokoyama, H., Hohkawa, K.

Journal:

IEEE Electron Device Letters

Year:

2007

Language:

english

File:

PDF, 331 KB

english, 2007

15

Optical amplification in trunk transmission networks

Nakagawa, K., Aida, K., Aoyama, K., Hohkawa, K.

Journal:

Year:

1992

File:

PDF, 949 KB

1992

16

[IEEE 2003 IEEE Ultrasonics Symposium - Honolulu, HI, USA (5-8 Oct. 2003)] IEEE Symposium on Ultrasonics, 2003 - Design consideration on ultra-wideband-SAW devices operating at GHz frequency range

Hohkawa, K., Yoshida, H., Kaneshiro, C., Koh, K.

Year:

2003

Language:

english

File:

PDF, 100 KB

english, 2003

17

[IEEE 1997 IEEE Ultrasonics Symposium An International Symposium - Toronto, Ont., Canada (5-8 Oct. 1997)] 1997 IEEE Ultrasonics Symposium Proceedings. An International Symposium (Cat. No.97CH36118) - AFM and TEM measurement of the microscopic surface structure of a quartz substrate

Noge, S., Araki, N., Komine, K., Suzuki, H., Shiraishi, H., Hohkawa, K.

Year:

1997

Language:

english

File:

PDF, 250 KB

english, 1997

18

[IEEE IEEE Ultrasonics Symposium, 2004 - Montreal, Canada (23-27 Aug. 2004)] IEEE Ultrasonics Symposium, 2004 - Bonding method of semiconductor devices on piezoelectric substrate using laser enhanced flip-chip technology

Keishin Koh,, Kaneshiro, C., Hohkawa, K.

Year:

2004

Language:

english

File:

PDF, 843 KB

english, 2004

19

[IEEE 1995 IEEE Ultrasonics Symposium. An International Symposium - Seattle, WA, USA (7-10 Nov. 1995)] 1995 IEEE Ultrasonics Symposium. Proceedings. An International Symposium - Low resistance thin Al film by simple sputtering deposition

Noge, S., Ueno, H., Hohkawa, K., Yoshikawa, S.

Year:

1995

Language:

english

File:

PDF, 180 KB

english, 1995

20

Line terminating multiplexers for SDH optical networks

Yamabayashi, Y., Matsuoka, S., Uematsu, Y., Hohkawa, K., Ohhata, M.

Journal:

Journal of Lightwave Technology

Year:

1993

Language:

english

File:

PDF, 787 KB

english, 1993

21

[IEEE 2006 64th Device Research Conference - State College, PA, USA (2006.06.26-2006.06.28)] 2006 64th Device Research Conference - AlGaN/GaN Field-Effect Surface Acoustic Wave Filters with >40-dB Isolation for Monolithic Integration with HEMTs

Shigekawa, Naoteru, Nishimura, Kazumi, Suemitsu, Tetsuya, Yokoyama, Haruki, Hohkawa, Kohji

Year:

2006

Language:

english

File:

PDF, 2.14 MB

english, 2006

22

[IEEE IEEE Global Telecommunications Conference GLOBECOM '91: Countdown to the New Millennium. Conference Record - Phoenix, AZ, USA (2-5 Dec. 1991)] IEEE Global Telecommunications Conference GLOBECOM '91: Countdown to the New Millennium. Conference Record - Very high speed optical line terminals

Yamabayashi, Y., Matsuoka, S., Miyagawa, Y., Hohkawa, K., Nakagawa, K.

Year:

1991

Language:

english

File:

PDF, 432 KB

english, 1991

23

[IEEE IEEE Ultrasonics Symposium, 2004 - Montreal, Canada (23-27 Aug. 2004)] IEEE Ultrasonics Symposium, 2004 - Ultra wide bandwidth SAW matched filter with chirp signal chips

Hohkawa, K., Kaneshiro, C., Keishin Koh,

Year:

2004

Language:

english

File:

PDF, 786 KB

english, 2004

24

[IEEE 1991 IEEE MTT-S International Microwave Symposium Digest - Boston, MA, USA (10-14 June 1991)] 1991 IEEE MTT-S International Microwave Symposium Digest - Ultrahigh speed optical transmission systems in Japan

Nakagawa, K., Hohkawa, K., Hagimoto, K.

Year:

1991

File:

PDF, 294 KB

1991

25

Fabrication of superconducting delay line with GaAs Schottky diode

Koh, K., Hohkawa, K.

Journal:

IEEE Transactions on Appiled Superconductivity

Year:

1999

Language:

english

File:

PDF, 368 KB

english, 1999

26

[IEEE IEEE Ultrasonics Symposium, 2005. - Rotterdam, The Netherlands (18-21 Sept. 2005)] IEEE Ultrasonics Symposium, 2005. - Transfer effects of induced carriers by SAW

Kaneshiro, C., Koh, K., Hohkawa, K., Nishimura, K., Shigekawa, N.

Year:

2005

Language:

english

File:

PDF, 353 KB

english, 2005

27

A novel current injection Josephson logic gate with high gain

Journal:

Applied Physics Letters

Year:

1981

Language:

english

File:

PDF, 465 KB

english, 1981

28

[IEEE IEEE Symposium on Ultrasonics, 2003 - Honululu, HI, USA (Oct. 5-8, 2003)] IEEE Symposium on Ultrasonics, 2003 - Fabrication of multi-functional integrated liquid sensors using MEMS and film-bonding technology

Kaneshiro, C., Koh, K., Hohkawa, K., Yamamura, A., Matsumoto, K.

Year:

2003

Language:

english

File:

PDF, 87 KB

english, 2003

29

Interdigital transducers with control gates on AlGaN∕GaN heterostructures

Shigekawa, Naoteru, Nishimura, Kazumi, Suemitsu, Tetsuya, Yokoyama, Haruki, Hohkawa, Kohji

Journal:

Applied Physics Letters

Year:

2006

Language:

english

File:

PDF, 498 KB

english, 2006

30

Side-gate effects on transfer characteristics in GaN-based transversal filters

Shigekawa, Naoteru, Nishimura, Kazumi, Yokoyama, Haruki, Hohkawa, Kohji

Journal:

Applied Physics Letters

Year:

2005

Language:

english

File:

PDF, 342 KB

english, 2005

31

[IEEE 2008 IEEE Ultrasonics Symposium (IUS) - Beijing, China (2008.11.2-2008.11.5)] 2008 IEEE Ultrasonics Symposium - Single phase transducer consisting of AlGaN/GaN

Hohkawa, Kohji, Oshiyama, Satoshi, Terao, Yuji, Koh, Keishin, Nishimura, Kazumi, Shigekawa, Naoteru

Year:

2008

Language:

english

File:

PDF, 1.45 MB

english, 2008

32

[IEEE 1979 Ultrasonics Symposium - (1979.09.26-1979.09.28)] 1979 Ultrasonics Symposium - Temperature Stable Oscillators Employing Parallel Connected SAW Resonators

Hohkawa, K., Yoshikawa, S.

Year:

1979

Language:

english

File:

PDF, 368 KB

english, 1979

33

Abrikosov vortex memory

Miyahara, Kazunori, Mukaida, Masashi, Hohkawa, Kohji

Journal:

Applied Physics Letters

Year:

1985

Language:

english

File:

PDF, 440 KB

english, 1985

34

Fabrication of YBaCuO wiring for YBaCuO trilayer junctions

Sato, H., Akoh, H., Onizawa, T., Hohkawa, K., Tomioka, A., Kawabe, U.

Journal:

IEEE Transactions on Appiled Superconductivity

Year:

1999

Language:

english

File:

PDF, 375 KB

english, 1999

35

[IEEE 2008 IEEE Ultrasonics Symposium (IUS) - Beijing, China (2008.11.2-2008.11.5)] 2008 IEEE Ultrasonics Symposium - Study on SAW devices having face to face aligned packaged structure

Koh, Keishin, Yamazaki, Takanori, Terao, Yuji, Hohkawa, Kohji

Year:

2008

Language:

english

File:

PDF, 4.27 MB

english, 2008

36

[IEEE 2006 IEEE Ultrasonics Symposium - Vancouver, BC, Canada (2006.10.2-2006.10.6)] 2006 IEEE Ultrasonics Symposium - P3O-6 Basic Study on SAW Device with Semiconductor Layer as IDTs and Control Means for Variable Operation

Koh, K., Hohkawa, K., Nishimura, K., Shigekawa, N., Mizusawa, T.

Year:

2006

Language:

english

File:

PDF, 432 KB

english, 2006

37

[IEEE IEEE MTT-S International Microwave Symposium Digest, 2005. - Long Beach, CA, USA (12-17 June 2005)] IEEE MTT-S International Microwave Symposium Digest, 2005. - Study on Photo-Induced Acoustic Charge Transport Effect in GaN Film

Hohkawa, K., Kaneshiro, C., Koh, K., Nishimura, K., Shigekawa, N.

Year:

2005

Language:

english

File:

PDF, 363 KB

english, 2005

38

Fabrication of superconductor/semiconductor quasi-monolithic devices using epitaxial liftoff technology

Qixin Huang,, Hohkawa, K.

Journal:

IEEE Transactions on Appiled Superconductivity

Year:

1997

Language:

english

File:

PDF, 449 KB

english, 1997

39

[IEEE LEOS'94 - Boston, MA, USA (31 Oct.-3 Nov. 1994)] Proceedings of LEOS'94 - A 1.25 Gbit/s four channel GaAs MSI integrated with MSM-PDs for optical interconnection

Uematsu, Y., Yamabayashi, K., Hohkawa, K., Togashi, M., Tanaka, N., Arai, Y.

Year:

1994

Language:

english

File:

PDF, 224 KB

english, 1994

40

[IEEE IEEE Symposium on Ultrasonics, 2003 - Honululu, HI, USA (Oct. 5-8, 2003)] IEEE Symposium on Ultrasonics, 2003 - Fabrication of timing extraction circuit integrating photodetector and SAW filter on piezoelectric substrate

Koh, K., Deguchi, T., Okamoto, S., Aoki, Y., Kaneshiro, C., Hohkawa, H.

Year:

2003

Language:

english

File:

PDF, 124 KB

english, 2003

41

[IEEE 2007 IEEE Ultrasonics Symposium Proceedings - New York, NY, USA (2007.10.28-2007.10.31)] 2007 IEEE Ultrasonics Symposium Proceedings - P5I-1 Multiple States Switching Operation of AlGaN /GaN Layer Mode Device

Hohkawa, K., Koh, K., Nishimura, K., Shigekawa, N.

Year:

2007

Language:

english

File:

PDF, 484 KB

english, 2007

42

[IEEE 2006 IEEE Ultrasonics Symposium - Vancouver, BC, Canada (2006.10.2-2006.10.6)] 2006 IEEE Ultrasonics Symposium - P2I-1 Surface Acoustic Wave Ultraviolet Sensor Using Epitaxial AlGaN/(Al,Ga)N Film

Koh, K., Nakai, K., Negisi, T., Yokota, M., Hohkawa, K.

Year:

2006

Language:

english

File:

PDF, 324 KB

english, 2006

43

[IEEE 2009 IEEE International Ultrasonics Symposium - Rome, Italy (2009.09.20-2009.09.23)] 2009 IEEE International Ultrasonics Symposium - Fabrication of SAW devices with small package size using through substrate via technology

Koh, Keishin, Okitsui, Hiroyuki, Hohkawa, Kohji

Year:

2009

Language:

english

File:

PDF, 1.81 MB

english, 2009

44

[IEEE IEEE Ultrasonics Symposium - Baltimore, MD, USA (31 Oct.-3 Nov. 1993)] Proceedings of IEEE Ultrasonics Symposium - Application of fluorinated copolyimides on surface acoustic wave devices

Komine, K., Araki, N., Hohkawa, K.

Year:

1993

Language:

english

File:

PDF, 445 KB

english, 1993

45

Fabrication and Application of Two-Axis Hall Sensor Array Using ELO Film Bonding Technology

Keishin Koh,, Seok Beom Kim,, Hohkawa, K.

Journal:

IEEE Transactions on Appiled Superconductivity

Year:

2007

Language:

english

File:

PDF, 429 KB

english, 2007

46

[IEEE 2006 IEEE Ultrasonics Symposium - Vancouver, BC, Canada (2006.10.2-2006.10.6)] 2006 IEEE Ultrasonics Symposium - P3O-3 Wideband Layer Mode Acoustic Devices on GaN/Sapphire Substrate

Koh, K., Yokota, M., Hohkawa, K., Nishimura, K., Shigekawa, N.

Year:

2006

Language:

english

File:

PDF, 433 KB

english, 2006

47

Temperature Dependence of Surface Acoustic Wave Characteristics of GaN Layers on Sapphire Substrates

Nishimura, Kazumi, Shigekawa, Naoteru, Yokoyama, Haruki, Hohkawa, Kohji

Journal:

Japanese Journal of Applied Physics

Year:

2005

Language:

english

File:

PDF, 166 KB

english, 2005

48

SAW characteristics of GaN with n+-GaN IDTs

Nishimura, K., Shigekawa, N., Yokoyama, H., Hohkawa, K.

Journal:

Electronics Letters

Year:

2006

Language:

english

File:

PDF, 64 KB

english, 2006

49

Fabrication of Surface Acoustic Wave-Semiconductor Coupled Devices Using Epitaxial Lift-Off Technology

Hong, Chulun, Koh, Keishin, Kaneshiro, Chinami, Aoki, Yusuke, Hohkawa, Kohji

Journal:

Japanese Journal of Applied Physics

Year:

2000

Language:

english

File:

PDF, 1.15 MB

english, 2000

50

Simulation Study on Semiconductor Coupled Surface Acoustic Wave Convolver through a Multi-Strip Electrodes

Hohkawa, Kohji, Suda, Takaya, Aoki, Yusuke, Kaneshiro, Chinami, Koh, Keishin

Journal:

Japanese Journal of Applied Physics

Year:

2001

Language:

english

File:

PDF, 1.80 MB

english, 2001