Search Results - "Kukutsu, N."

10-Gbit/s Wireless Link Using InP HEMT MMICs for Generating 120-GHz-Band Millimeter-Wave Signal by Hirata, A., Yamaguchi, R., Kosugi, T., Takahashi, H., Murata, K., Nagatsuma, T., Kukutsu, N., Kado, Y., Iai, N., Okabe, S., Kimura, S., Ikegawa, H., Nishikawa, H., Nakayama, T., Inada, T.

“…We have developed a 120-GHz-band wireless link whose maximum transmission data rate is 11.1 Gbit/s. The wireless link uses millimeter-wave monolithic…”
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Transmission Characteristics of 120-GHz-Band Wireless Link Using Radio-on-Fiber Technologies by Hirata, A., Takahashi, H., Yamaguchi, R., Kosugi, T., Murata, K., Nagatsuma, T., Kukutsu, N., Kado, Y.

“…The transmission characteristics of a 120-GHz-band millimeter-wave wireless link are described. The wireless link uses photonic technologies for generation,…”
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Effect of Rain Attenuation for a 10-Gb/s 120-GHz-Band Millimeter-Wave Wireless Link by Hirata, A., Yamaguchi, R., Takahashi, H., Kosugi, T., Murata, K., Kukutsu, N., Kado, Y.

“…We measured the effects of rain attenuation on 120-GHz band wireless link during the heavy rainy period (from July to September, 2008) and annual period (from…”
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Microwave Photonic Noise Source From Microwave to Sub-Terahertz Wave Bands and Its Applications to Noise Characterization by Ho-Jin Song, Shimizu, N., Kukutsu, N., Nagatsuma, T., Kado, Y.

“…In this paper, we present a microwave photonic technique to produce a noise signal from the microwave to sub-terahertz region with an optical amplified…”
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Sensitivity-Stabilized Fiber-Mounted Electrooptic Probe for Electric Field Mapping by Togo, H., Kukutsu, N., Shimizu, N., Nagatsuma, T.

“…We have developed a sensitivity-stabilized fiber-mounted electrooptic (EO) probe for electric field mapping. In this probe, a polarization-rotated reflection…”
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Toward practical applications over 100 GHz by Kukutsu, N, Hirata, A, Yaita, M, Ajito, K, Takahashi, H, Kosugi, T, Song, H.-J, Wakatsuki, A, Muramoto, Y, Nagatsuma, T, Kado, Y

“…This paper discusses practical applications of the frequency band starting at 100 Ghz-a band that has yet to be fully exploited. It considers the feasibility…”
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120-GHz-Band Wireless Link Technologies for Outdoor 10-Gbit/s Data Transmission by Hirata, A., Kosugi, T., Takahashi, H., Takeuchi, J., Togo, H., Yaita, M., Kukutsu, N., Aihara, K., Murata, K., Sato, Y., Nagatsuma, T., Kado, Y.

“…Our progress in 120-GHz-band wireless link technologies enables us to transmit 10-Gbit/s data transmission over a distance of more than 1 km. The 120-GHz-band…”
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Uni-Travelling-Carrier Photodiode Module Generating 300 GHz Power Greater Than 1 mW by Ho-Jin Song, Ajito, K., Muramoto, Y., Wakatsuki, A., Nagatsuma, T., Kukutsu, N.

“…In this letter, we demonstrate over 1 mW power generation at 300 GHz with a uni-travelling-carrier photodiode (UTC-PD) packaged in a WR-3 waveguide module. To…”
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5.8-km 10-Gbps data transmission over a 120-GHz-band wireless link by Hirata, A, Kosugi, T, Takahashi, H, Takeuchi, J, Murata, K, Kukutsu, N, Kado, Y, Okabe, S, Ikeda, T, Suginosita, F, Shogen, K, Nishikawa, H, Irino, A, Nakayama, T, Sudo, N

“…We have developed 120-GHz-band wireless equipment that can transmit 10-Gbit/s data signal over a distance of more than 5 km. In order to increase the output…”
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10-Gbit/s BPSK Modulator and Demodulator for a 120-GHz-Band Wireless Link by Takahashi, H, Kosugi, T, Hirata, A, Murata, K, Kukutsu, N

“…This paper presents 10-Gbit/s binary phase-shift keying modulator and demodulator modules for a 120-GHz-band millimeter-wave wireless link. To reduce system…”
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Continuous-wave terahertz spectroscopic imaging at over 1 THz for pharmaceutical applications by Ajito, K, Song, H.-J, Hirata, A, Wakatsuki, A, Muramoto, Y, Shigekawa, N, Kumashiro, T, Asa, D, Nagatsuma, T, Kukutsu, N, Kado, Y

“…Spectroscopic images were obtained using a system combining a tunable continuous-wave terahertz laser with an InP-based Schottky barrier diode detector…”
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Transient analysis of ferrite in three-dimensional space by Kukutsu, N., Yoshida, N., Fukai, I.

“…The authors present Bergeron's formulation of vector analysis for magnetized ferrite in a three-dimensional space and time domain. Results are provided for two…”
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Feasibility of millimeter wave imaging as tool for nondestructive inspection of wood and wooden structures by Fujii, Y, Fujiwara, Y, Tanaka, S, Okumura, S, Togo, H, Mochizuki, A, Kukutsu, N

“…Dielectric properties of wood were estimated by a reflection imaging using monostatic system of millimeter wave of 100GHz and by a transmission imaging using…”
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Transient analysis of magnetostatic waves in a ferrite loaded rectangular waveguide by the spatial network method by Kukutsu, N., Yoshida, N., Fukai, I.

“…The spatial network method was used for the 3-D time-domain analysis of a magnetostatic surface wave (MSSW) propagated on a ferrite slab loaded in a…”
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Optical measurement of millimeter-wave antenna for imaging concealed cracks on concrete surface by Togo, H, Mochizuki, S, Oka, S, Toyoda, I, Kukutsu, N, Kado, Y

“…We have developed a handy near-field imaging system (Crack Scan) to nondestructive inspect decrepit concrete structures. In Crack Scan, 77-GHz band tapered…”
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Continuous-Wave THz Homodyne Spectroscopy and Imaging System With Electro-Optical Phase Modulation for High Dynamic Range by Jae-Young Kim, Ho-Jin Song, Ajito, K., Yaita, M., Kukutsu, N.

“…We present a terahertz (THz) continuous-wave coherent homodyne spectroscopy and imaging system based on THz phase control using electrooptic (EO) phase…”
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Tomographic Imaging Using Photonically Generated Low-Coherence Terahertz Noise Sources by Isogawa, T., Kumashiro, T., Ho-Jin Song, Ajito, K., Kukutsu, N., Iwatsuki, K., Nagatsuma, T.

“…Three-dimensional (3D) terahertz (THz) imaging or THz tomography has recently proven to be powerful for non-destructive testing of industrial materials and…”
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Super absorption boundary condition for guided waves in the 3-D TLM simulation by Kukutsu, N., Konno, R.

“…A super absorption boundary condition (SABC) for the 3-D symmetrical condensed node transmission line matrix (3-D SCN TLM) method is presented. As both an…”
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10-Gbit/s QPSK modulator and demodulator for a 120-GHz-band wireless link by Takahashi, H., Kosugi, T., Hirata, A., Murata, K., Kukutsu, N.

“…This paper describes a 120-GHz-band quadrature phase shift keying (QPSK) modulator and demodulator fabricated on microwave monolithic integrated circuits…”
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High-phase-resolution 77-GHz-band radar module for near-field millimeter-wave imaging by Mochizuki, S., Oka, S., Togo, H., Kukutsu, N.

“…Near-field millimeter-wave (MMW) imaging is a unique approach for inspecting cracks in covered concrete surfaces to assess the deterioration of concrete…”
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