Abstract: A radio wave propagation analysis device includes a simplified map information generating unit to acquire map information including building information and open space region information corresponding to the map information, generate block region information in which a region obtained by excluding a region indicated by the open space region information from a map indicated by the map information is set as a block region, and generate simplified map information in which the map information is simplified in which the region obtained by excluding the region indicated by the open space region information is changed to a block region indicated by the block region information, and a radio wave propagation analysis unit to perform radio wave propagation analysis on the basis of the simplified map information.

Abstract: 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.

Abstract: 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.

Abstract: A reflector antenna apparatus includes: a radiator that emits a radio wave; a reflector that reflects the radio wave emitted from the radiator, a shape of the reflector being changeable; a support structure supporting the reflector, the support structure being connected to at least a part of an outer periphery of the reflector and including at least two flexible support members capable of following a change in the shape of the reflector; an injection device that injects a fluid into the at least two support members; and a coupling that couples the reflector and the at least two support members. In a deployed state in which the at least two support members are filled with the fluid, the reflector is configured to form a curved surface shape in which the reflector is not curved in a first direction and is curved in a second direction orthogonal to the first direction.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: What is provided here are: a radiation element provided at one of walls of a heating chamber, 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 at both end portions thereof; 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; wherein the at least one hollow dielectric member is provided along one of the walls which is other than the wall at which the radiation element is provided; and wherein the plasma control unit controls the state of the hollow dielectric member so that it is 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 t

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: An antenna device includes a beamforming circuit (3) 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 (6) that receives the radio wave in the first frequency band output from the beamforming circuit (3), 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 (7) 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 (6), 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 (6).

Abstract: 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.

Abstract: A plurality of primary radiators (1) is classified by combinations of frequency and polarization of radiated radio waves, a plurality of primary radiators (1) belonging to the same class is arranged at positions corresponding to vertexes of one of triangles in a repeated triangle pattern TRPattern, and the shape of a main reflector (2) and the shape and arrangement of the repeated triangle pattern TRPattern are 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 (2) after having been radiated from a primary radiator (1) arranged at a position corresponding to the vertexes.

Abstract: 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.

Abstract: An antenna device includes a beamforming circuit (3) 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 (6) that receives the radio wave in the first frequency band output from the beamforming circuit (3), 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 (7) 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 (6), 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 (6).