Mitsubishi Electric Corporation

Yuichiro Fukuma

Hayato Ogino

Yoshio Inasawa

Yukihisa Yoshida

Yasuhiro Nishioka

Teruki Naito

Tai Tanaka

Shingo Yamaura

A sealed case () includes a first electrode () and a second electrode (). The maximum size of each of these electrodes and a distance between them are equal to or smaller than one tenth the wavelength of a signal of interest. The sealed case () is configured such that the internal gas becomes a plasma state. The second electrode () is connected to a first conductor (), and the first electrode () is connected to a second conductor () disposed to be perpendicular to the first conductor ().

Antenna device and array antenna device

An antenna device includes a ground conductor (), a dielectric tube () containing an ionizing gas and passing through the ground conductor, whose folded-back portion () and both ends are disposed in different sides of the ground conductor, first electrodes () disposed at both ends of the dielectric tube (), a plasma excitation power supply connected to the first electrodes, bringing the ionizing gas into a plasma state; a second electrode () ring-shaped and disposed at the both ends side of dielectric tube () from the ground conductor (), fitted to and in contact with the dielectric tube outer surface, a high frequency transmitter () supplying a high frequency signal to the second electrode (), and a feed line () connecting the second electrode and the high frequency transmitter. Each end of the dielectric tube () is larger than the second electrode in the inner diameter.

Antenna device

Growing community of inventors

Tokyo, Japan

Yuichiro Fukuma