J. Chiba

Security communication in winding tunnels and deep underground streets

K. Matsui, J. Chiba, 1994, 1994 Proceedings of IEEE International Carnahan Conference on Security Technology.

Sensor for gravitational field and its application to measures against large earthquake disasters

J. Chiba, 1994, 1994 Proceedings of IEEE International Carnahan Conference on Security Technology.

RADIOCOMMUNICATION IN THE TUNNEL AND UNDERGROUND STREET

Y. Kuwamoto, J. Chiba, R. Sato, 1978 .

Effects of Trains on Cutoff Frequency and Field in Rectangular Tunnel As Waveguide

J. Chiba, K. Sugiyama, 1982 .

Communication in a three-layered conducting media with a vertical magnetic dipole

A. Arutaki, J. Chiba, 1980 .

Radio Communication in Tunnels

J. Chiba, R. Sato, J. Chiba, 1978 .

Attenuation Constants of UHF Radio Waves in Arched Tunnels (Short Paper)

Yoshio Yamaguchi, T. Sekiguchi, T. Abe, 1985 .

Improved theory for E-plane symmetrical tee junctions

T. Obata, J. Chiba, 1989 .