Abstract: A dielectric substrate is provided between a first waveguide member and a second waveguide member. The second waveguide member includes a plurality of slots for radiating a horizontally polarized wave. The dielectric substrate is provided with a plurality of line-shaped conductors arranged obliquely with respect to the waveguide axial direction and waveguide wall conductors as waveguide wall surfaces, and includes conductor-removed portions that function as vertically-polarized-wave radiation slot parallel to the waveguide axial direction. The waveguide wall conductors are connected by vias.

Abstract: In adjacent two of linear array antennas, respective first element antennas and respective second element antennas are arranged so that positions of the first element antennas in the arrangement direction are shifted from each other by a half an arrangement interval and positions of the second element antennas in the arrangement direction are shifted from each other by a half the arrangement interval, the arrangement interval being an interval between the element antennas. In two of the linear array antennas, the first element antennas of one of the two and the second element antennas of the other one of the two are arranged at the same positions, and the second element antennas of the one of the two and the first element antennas of the other one of the two are arranged at the same positions, the two being located two linear array antennas away from each other.

Abstract: Included are: a first dielectric substrate provided with a first conductor ground plane on a front or back surface thereof; a plurality of patch antennas formed in the first conductor ground plane, a plurality of conductive members, ends of which connected to the first conductor ground plane to surround the patch antennas individually, and a second conductor ground plane connected to each of the other ends of the conductive members, and parts of the plurality of conductive members penetrate the first dielectric substrate, and the remaining parts of the conductive members function as spacers for providing an air layer between the first dielectric substrate and the second conductor ground plane, and the plurality of conductive members functions as spacers for providing an air layer between the first conductor ground plane and the second conductor ground plane.

Abstract: In radiation elements, recessed portions for adjusting the power of an electromagnetic wave that passes through the radiation elements are formed as power adjustment portions at coupling portions, respectively, which are on the opposite side of a feeding unit out of sets of two coupling portions to a feed line.

Abstract: Disclosed is an antenna device including a rectangular waveguide (1) having a first opening end (2a) and a second opening end (2b), a septum phase plate (3) disposed inside the rectangular waveguide (1) in such a way as to partition the first opening end (2a) into two parts along a first direction perpendicular to a waveguide axial direction of the rectangular waveguide (1), a width of the septum phase plate in a second direction perpendicular to both the waveguide axial direction of the rectangular waveguide (1) and the first direction becoming narrower stepwise with advancing from the first opening end (2a1, 2a2) toward the second opening end (2b), and first projecting portions (4a, 4b) disposed on two respective first inner walls (1a, 1b) parallel to the septum phase plate (3), out of four inner walls of the rectangular waveguide (1), in such a way as to project toward an inside of the rectangular waveguide (1).

Abstract: An antenna device includes: a dielectric substrate 1; a first conductor 2 provided on a first surface of the dielectric substrate 1; a second conductor 100 provided on a second surface of the dielectric substrate 1, the second surface being opposite to the first surface on which the first conductor 2 is provided, the second conductor 100 having a feeding point 12; a third conductor 200a provided on the same second surface on which the second conductor 100 is provided; and a pair of transmission lines that electrically connect the second conductor 100 and the third conductor 200a.

Abstract: There are provided: an excitation distribution calculating unit (13) for calculating excitation distributions W1(t) and W2(t) of a communication beam and an interference beam, of which sums of squares of excitation amplitudes of the communication beam for transmitting a communication signal d(t) and the interference beam for transmitting an interference signal i(t), which are radio waves, are the same to each other for each of a plurality of element antennas (3-1) to (3-K); and an excitation distribution synthesizing unit (25) for synthesizing the excitation distributions W1(t) and W2(t) of the communication beam and the interference beam calculated by the excitation distribution calculating unit (13) and outputting a synthesized excitation distribution E(t), and a phase control unit (30) respectively controls phases of carrier wave signals given to the plurality of element antennas (3-1) to (3-K) in accordance with the synthesized excitation distribution E(t) output from the excitation distribution synthesiz

Abstract: Included are: a waveguide in which multiple probe inserting holes are provided in a first wall surface, and multiple connection shaft inserting holes are provided in a second wall surface; multiple feed probes each of which is inserted in one of the probe inserting holes, and to a first end of each of which one of multiple circularly polarized element antennas is connected; multiple connection shafts each of which is inserted in one of the connection shaft inserting holes, and a third end of each of which is connected to a second end of one of the feed probes; multiple rotation shafts, a fifth end of each of which is connected to a fourth end of one of the connection shafts; multiple rotation devices each of which rotates one of the rotation shafts; and a control device that individually controls rotation of the rotation devices.

Abstract: An antenna device is configured to include a first waveguide that is short-circuited to a ground conductor plate in such a way that an input output end thereof is connected to a first opening, and a second waveguide in which a first input output end thereof is connected to another input output end in the first waveguide, for deflecting the direction of an electric field of an electromagnetic wave supplied from the first input output end or a second input output end thereof in such a way that the direction of an electric field of an electromagnetic wave at the first input output end differs from the direction of an electric field of an electromagnetic wave at the second input output end by 90 degrees.

Abstract: An array antenna device, including: a waveguide (1) having a plurality of radiation units (2) arranged on one tube wall thereof, in which the waveguide (1) has a plurality of grooves (3) arranged on an inner side of a tube wall facing the tube wall, movable short-circuit surfaces (4) each electrically short-circuited to an inner wall of one of the grooves (3), and movable short-circuit surface controlling mechanisms (5) for changing positions of the movable short-circuit surfaces (4).

Abstract: There are provided a communication excitation distribution calculating unit (11) that calculates an excitation distribution W1(t) of a communication beam using an excitation phase distribution S that directs a main lobe of the communication beam in a communication direction; an interference excitation distribution calculating unit (14) that calculates an excitation distribution W2(t) of an interference beam using an excitation phase distribution D that forms a null of an antenna pattern in the communication direction; and an excitation distribution combining unit (20) that combines the excitation distribution W1(t) of the communication beam and the excitation distribution W2(t) of the interference beam. An amplitude/phase controlling unit (30) controls amplitudes and phases of carrier signals to be provided to element antennas (3-1) to (3-K), in accordance with the combined excitation distribution obtained by the excitation distribution combining unit (20).

Abstract: There is provided a partial discharge sensor including a first flange formed at an end of a first conductor tube, a second flange formed at an end of a second conductor tube, a first insulating spacer sandwiched between the first flange and the second flange, a plurality of holes passing through the first flange, the first insulating spacer, and the second flange, at least two first conductors each passing through one of the plurality of holes to be disposed with electrically connected to the first flange and the second flange, a second conductor passing through one of the plurality of holes to be disposed with electrically connected to the second flange, and a second insulating spacer that insulates the second conductor and the first flange from each other.

Abstract: The present invention is characterized by an antenna device including: a circuit board; a circuit pattern formed by a conductor on a surface of the circuit board; and a minute loop antenna mounted on the circuit board and formed in a loop shape by a conductor having two end portions, wherein the circuit pattern includes at least a feeder circuit configured to supply power to the minute loop antenna, and a ground, and the minute loop antenna is mounted on the circuit board such that: the conductor having the two end portions is connected at one end thereof to the feeder circuit and connected at another end thereof to the ground; a loop surface of the conductor having the two end portions is perpendicular to a plane on which the circuit pattern is formed; and a normal line passing through the loop surface does not pass through the circuit pattern.

Abstract: A partial discharge sensor evaluation method includes a first frequency characteristic measuring process in which, in a state where a reference antenna 3 for which a frequency characteristic in an effective height is known and a measuring antenna 2 are installed on a flat ground 1 to be separated by a predetermined distance from each other, a transmission characteristic measurer 4 measures a frequency characteristic of a transmission characteristic between the reference antenna 3 and the measuring antenna 2, and a second frequency characteristic measuring process in which, in a state where a measured antenna 9 is installed inside a cylindrical ground 6 buried in a circular opening 5 formed at a position where the reference antenna 3 has been installed, the transmission characteristic measurer 4 measures the frequency characteristic of the transmission characteristic between the measured antenna 9 and the measuring antenna 2.

Abstract: There are provided a communication excitation distribution calculating unit (11) that calculates an excitation distribution W1(t) of a communication beam using an excitation phase distribution S that directs a main lobe of the communication beam in a communication direction; an interference excitation distribution calculating unit (14) that calculates an excitation distribution W2(t) of an interference beam using an excitation phase distribution D that forms a null of an antenna pattern in the communication direction; and an excitation distribution combining unit (20) that combines the excitation distribution W1(t) of the communication beam and the excitation distribution W2(t) of the interference beam. An amplitude/phase controlling unit (30) controls amplitudes and phases of carrier signals to be provided to element antennas (3-1) to (3-K), in accordance with the combined excitation distribution obtained by the excitation distribution combining unit (20).

Abstract: A partial discharge sensor includes: a first ground (1) that constitutes a closed space (3) to surround a high-voltage wire (2); and a cylindrical branch pipe (4) disposed at the first ground (1) to protrude to an outer space to house with a lid (8) a first metal container (6) having at least one hole through which gas can pass, and having a slit (12) formed on the side to the space (3); at one end of a coaxial wire (7) disposed in the container (6), an outer conductor (9) of the coaxial wire (7) is connected to the first metal container (6) at a portion near the center of the slit (12), and an inner conductor (10) of the coaxial wire (7) is connected to the first metal container (6) at an opposite portion to a position where the outer conductor (9) is connected across the slit (12).

Abstract: There is provided a conductive hollow tube (3) which is brought into tight contact with the top surface of a grounding conductor (1a) at a position where a first end having an opening plane (4a) with an inner diameter matching a diameter of a hole (2a) formed on the grounding conductor (1) overlaps with the hole (2a), and which is bent so that an opening plane (4b) of a second end faces the top surface direction and that an intermediate portion between the first end and the second end is arranged parallel to the grounding conductor (1), and a conductive liquid supplied from the opening plane (4a) of the first end is passed through the conductive hollow tube (3) and discharged to the outside from the opening plane (4b) of the second end.

Abstract: There is provided a partial discharge sensor including a first flange formed at an end of a first conductor tube, a second flange formed at an end of a second conductor tube, a first insulating spacer sandwiched between the first flange and the second flange, a plurality of holes passing through the first flange, the first insulating spacer, and the second flange, at least two first conductors each passing through one of the plurality of holes to be disposed with electrically connected to the first flange and the second flange, a second conductor passing through one of the plurality of holes to be disposed with electrically connected to the second flange, and a second insulating spacer that insulates the second conductor and the first flange from each other.