Mitsubishi Electric Corporation

Tai Tanaka

Takashi Maruyama

Shigeo Udagawa

Michio Takikawa

Yoshio Inasawa

Yasuhiro Nishioka

Tomoharu Awano

Mitsuru Kirita

Koji Ibata

Shingo Yamaura

Hiroshi Suenobu

Hayato Ogino

Yuichiro Fukuma

Jin Hirano

Ryotaro Ohashi

A method for calibrating a phased array antenna is provided. The phased array antenna includes multiple transmission modules each including a phase shifter that changes a phase of a high frequency signal output from a signal source, an amplifier that amplifies an amplitude of the high frequency signal, and a transmission antenna that converts the high frequency signal into a radio wave, and a reception module including a reception antenna. The method includes a step of receiving, by the reception antenna, a reflected wave that is a radio wave transmitted from the transmission antenna of each of the multiple transmission modules and reflected outside the phased array antenna, and a step of adjusting the phase shifter and the amplifier of each of the multiple transmission modules based on an amplitude and a phase of the reflected wave received.

Phased array antenna calibration method and phased array antenna calibration system

A radiation element for radiating a microwave into the heating chamber at least one hollow dielectric member in which a gas is sealed, the hollow dielectric member having electrodes and a control unit having a plasma control unit for controlling the state of the hollow dielectric member and a current adjustment unit for adjusting a current to be applied to the electrodes of the hollow dielectric member under the control of the plasma control unit, the current adjustment unit being connected to the electrodes; and wherein the plasma control unit controls the state of the hollow dielectric member to put into one of states of: a plasma state in which the microwave is reflected by the gas; a plasma state in which the microwave is absorbed by the gas; and a gas state in which the microwave is allowed to be transmitted through the gas.

Microwave heating device

Included are: a radar main unit for emitting a radar wave and receiving a reflection wave of the radar wave reflected by an object; and a dielectric substrate in which multiple matching layers each having a protruded shape are regularly arranged on one surface of the dielectric substrate, and the radar wave emitted from the radar main unit enters the multiple matching layers in a state where the other-surface side of the dielectric substrate is attached to a windshield.

Radar device

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

Growing community of inventors

Tokyo, Japan

Tai Tanaka