Mitsubishi Electric Corporation

Michio Takikawa

Yoshio Inasawa

Hiroto Ado

Masashi Okuno

Shinichi Yamamoto

Takuro Sasaki

Takashi Tomura

Yukihiro Honma

Hiromasa Nakajima

Tai Tanaka

Takashi Maruyama

Shigeo Udagawa

Tamotsu Nishino

Shuji Nuimura

Shingo Yamaura

Tomoyuki Koyanagi

Hiroshi Suenobu

Yuki Takatani

An antenna and a radome that covers the antenna are provided, the radome includes a first part, a second part, and a third part each with a surface which is flush to each other, the first part has a beam transmission characteristic corresponding to a scanning angle of 0 degrees of a beam emitted by the antenna with an emission direction directed toward the first part, the second part has a beam transmission characteristic corresponding to a first scanning angle of a beam emitted by the antenna with an emission direction directed toward the second part, and the third part has a beam transmission characteristic corresponding to a second scanning angle of a beam emitted by the antenna with an emission direction directed toward the third part.

Antenna device

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

A reflector antenna device includes: a primary radiator to radiate a first radio wave in a first frequency band and a second radio wave in a second frequency band lower in frequency than the first frequency band; and a reflector having a reflection face reflecting the first radio wave and the second radio wave radiated by the primary radiator, in which the reflection face of the reflector has a first region including a center point of the reflection face and a second region that is an outer peripheral region of the first region and is provided with a plurality of recesses, and each of the plurality of recesses is configured to allow entrance of the first radio wave, restrict entrance of the second radio wave, and reflect the first radio wave having entered the recess on a bottom face of the recess.

Reflector antenna 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

There are provided a plurality of poles whose roots are connected to a central part and whose tips extend in mutually different directions on an identical plane or on an identical curved surface, wherein a pole width at each of the roots is narrower than a pole width between each of the roots and the corresponding one of the tips, and a pole width at each of the tips is narrower that the pole width between each of the roots and the corresponding one of the tips, each pole width being defined by a length of a line segment in a direction perpendicular, on the identical plane or on the identical curved surface, to a line segment connecting each of the roots to a corresponding one of the tips in the respective poles.

Resonant element of frequency selective surface, frequency selective surface and antenna device

An antenna device includes a beamforming circuit () that forms a radio wave in a first frequency band, including two polarized waves orthogonal to each other, and outputs the radio wave in the first frequency band, a beamforming circuit () that receives the radio wave in the first frequency band output from the beamforming circuit (), and outputs a the radio wave in the first frequency band, and forms a radio wave in a second frequency band, including two polarized waves orthogonal to each other, and outputs the radio wave in the second frequency band, and primary radiators () that emit a beam in the first frequency band in response to the radio wave in the first frequency band output from the beamforming circuit (), and emit a beam in the second frequency band in response to the radio wave in the second frequency band output from the beamforming circuit ().

A first region of a reflection mirror including a center point of the paraboloid of revolution is formed of a conductor. A second region, which is an outer peripheral side of the first region, of the reflection mirror is a region where a plurality of reflection elements, which are conductor patterns, is arranged on a dielectric body overlaid on a base plate conductor. An arrangement pitch of the plurality of reflection elements corresponds to a wavelength of a radio wave in the second frequency band.

Reflection mirror antenna device

A plurality of primary radiators () is classified by combinations of frequency and polarization of radiated radio waves, a plurality of primary radiators () belonging to the same class is arranged at positions corresponding to vertexes of one of triangles in a repeated triangle pattern TR, and the shape of a main reflector () and the shape and arrangement of the repeated triangle pattern TRare determined such that a direction of a line segment passing through positions corresponding to two vertexes in the triangle is different from a radiation direction of a sidelobe of a radio wave reflected by a main reflector () after having been radiated from a primary radiator () arranged at a position corresponding to the vertexes.

Antenna apparatus

Frequency selective surface

A microwave irradiating and heating device including: a reaction furnace containing a sample material to be irradiated with a microwave passed through an opening and to be heated; a microwave irradiating source disposed outside the reaction furnace; a rotated quadric surface mirror reflecting microwave emitted from the microwave irradiating source toward the opening, and disposed above the reaction furnace; a lid for the opening, at least a portion of the lid made from dielectric to transmit microwave reflected on the rotated quadric surface mirror into the reaction furnace; wherein an angle of incidence of the microwave, reflected on the rotated quadric surface mirror and irradiated at the portion of the lid made from the dielectric, is at an angle causing a polarized wave of the microwave to pass through the portion.

Microwave irradiating and heating device

A microwave irradiating and heating device including a reaction furnace for containing a sample material to be irradiated with microwave and to be heated, a lid provided for the reaction furnace and having a single hole, a microwave irradiating source for emitting a microwave, the microwave irradiating source being disposed outside the reaction furnace, and a rotated quadric surface mirror for reflecting the microwave emitted from the microwave irradiating source into the reaction furnace through the hole of the lid, the rotated quadric surface mirror being disposed above the reaction furnace.

Disclosed is a microwave irradiating and heating device including: a reaction furnace () for containing a sample material () to be irradiated with microwave and to be heated; a polarization grid () provided for the reaction furnace (); a microwave irradiating source () for emitting a linearly polarized microwave, the microwave irradiating source () being disposed outside the reaction furnace (); and a reflector () for reflecting the microwave emitted from the microwave irradiating source () toward the reaction furnace () through the polarization grid (), the reflector () being disposed above the reaction furnace (), wherein the microwave irradiating source () is arranged in such a way that the polarization direction of the reflected microwave which is made incident upon the polarization grid () is perpendicular to an orientation of the polarization grid ().

Growing community of inventors

Tokyo, Japan

Michio Takikawa