Abstract: A high frequency module includes a first board including a connection portion protruding from an end portion thereof, and a second board including a board through-hole penetrating the second board in a thickness direction thereof. The first board includes a connection pattern connecting a terminal pad formed on a leading end of the connection portion penetrating the board through-hole and a first line pattern forming a tri-plate line. The connection pattern has a line width increasing stepwise from the terminal pad toward the first line pattern. The second board includes a connection pad electrically connected to the terminal pad penetrating the board through-hole.

Abstract: A leaky cable is provided with a linear insulator and a metal layer formed on an outer peripheral surface of the insulator. A slot for leaking electromagnetic waves is formed through the metal layer between an inner peripheral surface and an outer peripheral surface of the metal layer, and the outer peripheral surface of the insulator is formed with unevenness that inhibits misalignment of the slot with respect to the insulator. The method of manufacturing the leaky cable includes forming an insulator composed of thermoplastic resin in a cylindrical shape, roughening an outer peripheral surface of the insulator, forming a metal layer on the outer peripheral surface of the insulator, and forming a slot through the metal layer between an inner peripheral surface and an outer peripheral surface of the metal layer. The slot is configured to leak electromagnetic waves to outside of the metal layer.

Abstract: A phase-shifting circuit 1 includes a signal conductor 2 that transmits signals, and a dielectric body 3 that is disposed to overlap the signal conductor 2, said phase-shifting circuit changing the phase of the signals by changing the area of an overlapping section 5 where the signal conductor 2 and the dielectric body 3 overlap each other. The phase-shifting circuit further includes a transformer unit 7 for matching impedance between the overlapping section 5 and non-overlapping section 6 where the signal conductor 2 and the dielectric body 3 do not overlap each other, said transformer unit being provided at end sections of the dielectric body 3, said end sections being on the input side and output side of the signals.

Abstract: A phase-shifting circuit 1 includes a signal conductor 2 that transmits signals, and a dielectric body 3 that is disposed to overlap the signal conductor 2, said phase-shifting circuit changing the phase of the signals by changing the area of an overlapping section 5 where the signal conductor 2 and the dielectric body 3 overlap each other. The phase-shifting circuit further includes a transformer unit 7 for matching impedance between the overlapping section 5 and non-overlapping section 6 where the signal conductor 2 and the dielectric body 3 do not overlap each other, said transformer unit being provided at end sections of the dielectric body 3, said end sections being on the input side and output side of the signals.

Abstract: An antenna device includes a transmission line for propagating high frequency signal, and a plurality of antenna elements connected to the transmission line. The transmission line includes a first plate-shaped conductor, a second plate-shaped conductor, and a third plate-shaped conductor electrically grounded, a first central conductor disposed between the first and second plate-shaped conductors, a second central conductor disposed between the second and third plate-shaped conductors, an electrically connecting member inserted in an inserting hole formed through the second plate-shaped conductor, to electrically connect the first and second central conductors together, and an electrically grounded conductor disposed adjacent to the electrically connecting member.

Abstract: An antenna device includes a center substrate including a dielectric substrate and a center conductor on the dielectric substrate, and two ground plates sandwiching via an air layer the center substrate therebetween to form a feeder line. A hole is formed in the dielectric substrate on at least one side of the center conductor along a longitudinal direction of the center conductor.

Abstract: An antenna device includes an input/output portion for a high frequency signal to be input or output, a distributing portion for distributing the high frequency signal input to the input/output portion into a plurality of high frequency signals, a phase shifting portion for imparting the plurality of high frequency signals with a predetermined amount of phase shift, and a feeding portion for feeding a plurality of antenna elements with the plurality of high frequency signals imparted with the predetermined amount of phase shift to cause the plurality of antenna elements to radiate the plurality of high frequency signals. The feeding portion is configured as a triplate line with a center conductor placed between one pair of parallel plate shaped outer conductors.

Abstract: In an antenna device including an antenna element and a feeder line to supply power to the antenna element, the antenna device includes: a front surface feeder line and a rear surface feeder line on front and rear surfaces of a substrate; opposing upper-side and lower-side ground plates across the substrate; a coaxial cable including a center conductor connected to the front surface feeder line and the rear surface feeder line and an outer conductor connected to the upper-side ground plate; and a center conductor connection fitting including a substrate connection portion inserted between the upper-side ground plate and the lower-side ground plate and a first cable connection portion protruding to outside of the upper-side ground plate. First connection pieces of the substrate connection portion are connected to the front surface feeder line, and a second connection piece is connected to the rear surface feeder line.

Abstract: A phase shifter includes dielectric members including facing portions facing a signal line formed on a surface of a substrate and being made of a dielectric material, a supporting member configured to support the dielectric members and receive a moving force for moving the dielectric members in a direction which is parallel to the substrate and crosses the signal line, and a moving mechanism configured to apply the moving force to the supporting member. At least either the dielectric members or the supporting member is provided with a protrusion configured to keep a distance between the facing portions of the dielectric members and the signal line.

Abstract: An antenna device includes a first triplate line and one or more second triplate lines that are connected to the first triplate line so as to cross the first triplate line. Two ground plates of each second triplate line include respective flange portions that are in contact with and fixed to a surface of one of two ground plates of the first triplate line. At least one of a surface of each flange portion that contacts the one of the ground plates of the first triplate line and the surface of the one of the ground plates of the first triplate line that contacts each flange portion is provided with an irregular portion for reducing a contact area between each flange portion and the one of the ground plates.

Abstract: A phase-shift circuit being smaller in size than a conventional phase-shift circuit and being capable of causing a phase difference equivalent to or larger than that in the conventional phase-shift circuit between an input signal and an output signal is achieved. A phase-shift circuit includes: a signal line; and a dielectric member overlapping the signal line and being capable of reciprocating in a direction intersecting the signal line, and changes a phase of a signal propagating through the signal line. The dielectric member is configured of a frame body and a dielectric plate provided inside the frame body and having an overlapping area with the signal line increased or decreased by the reciprocation, and the frame body has a permittivity lower than a permittivity of the dielectric plate.

Abstract: An antenna device includes a plurality of phase shift circuits to which distributed signals are respectively input and a plurality of antenna elements to which signals output from the respective phase shift circuits are input. At least one of the plurality of phase shift circuits has a signal line in which a first region in which paired dielectric members are disposed, a second region in which no paired dielectric members is disposed and a third region in which paired dielectric members are disposed are provided in this order along a propagation direction of a signal. Moreover, a characteristic impedance of the first region in a state where the paired dielectric members are not disposed and a characteristic impedance of the third region in a state where the paired dielectric members are not disposed are higher than a characteristic impedance of the second region.

Abstract: A transmission line has a triplate line including a first outer conductor and a second outer conductor disposed in parallel with each other at a predetermined interval, and a central conductor disposed in a space between the first outer conductor and the second outer conductor; and a dielectric spacer interposed between the first and second outer conductors and the central conductor and configured to support the central conductor. The central conductor has a supported portion supported by the dielectric spacer, and first and second high-impedance portions having characteristic impedances higher than a characteristic impedance in the supported portion. The first and second high-impedance portions are disposed on input and output sides, respectively, of the supported portion.

Abstract: An antenna device has a feed line including a triplate line. Each triplate line has a central conductor and two ground plates sandwiching the central conductor via an air layer. At least a part of the triplate line is configured such that the two ground plates sandwich a center substrate including a wiring pattern as the central conductor provided on a dielectric substrate via the air layer.

Abstract: An antenna device includes a transmission line for propagating high frequency signal, and a plurality of antenna elements connected to the transmission line. The transmission line includes a first plate-shaped conductor, a second plate-shaped conductor, and a third plate-shaped conductor electrically grounded, a first central conductor disposed between the first and second plate-shaped conductors, a second central conductor disposed between the second and third plate-shaped conductors, an electrically connecting member inserted in an inserting hole formed through the second plate-shaped conductor, to electrically connect the first and second central conductors together, and an electrically grounded conductor disposed adjacent to the electrically connecting member.

Abstract: An antenna device (1) includes a plurality of triplate lines (31, 32) each of which includes a central conductor (401/122A) arranged between one pair of outer conductors (30, 50/121A, 123A) parallel to each other, and a plurality of antenna elements (14a) to transmit high frequency signals distributed by the plurality of triplate lines (31, 32). The plurality of triplate lines (31, 32) include a first triplate line (31) and a second triplate line (32) arranged non-parallel to each other and at a predetermined angle therebetween so that respective central conductors (401/122A) of the first triplate line (31) and the second triplate line (32) are intersected and connected together.

Abstract: A phase shifter includes dielectric members including facing portions facing a signal line formed on a surface of a substrate and being made of a dielectric material, a supporting member configured to support the dielectric members and receive a moving force for moving the dielectric members in a direction which is parallel to the substrate and crosses the signal line, and a moving mechanism configured to apply the moving force to the supporting member. At least either the dielectric members or the supporting member is provided with a protrusion configured to keep a distance between the facing portions of the dielectric members and the signal line.

Abstract: A phase-shift circuit being smaller in size than a conventional phase-shift circuit and being capable of causing a phase difference equivalent to or larger than that in the conventional phase-shift circuit between an input signal and an output signal is achieved. A phase-shift circuit includes: a signal line; and a dielectric member overlapping the signal line and being capable of reciprocating in a direction intersecting the signal line, and changes a phase of a signal propagating through the signal line. The dielectric member is configured of a frame body and a dielectric plate provided inside the frame body and having an overlapping area with the signal line increased or decreased by the reciprocation, and the frame body has a permittivity lower than a permittivity of the dielectric plate.

Abstract: An antenna device includes a center substrate including a dielectric substrate and a center conductor on the dielectric substrate, and two ground plates sandwiching via an air layer the center substrate therebetween to form a feeder line. A hole is formed in the dielectric substrate on at least one side of the center conductor along a longitudinal direction of the center conductor.

Abstract: An antenna device includes a plurality of phase shift circuits to which distributed signals are respectively input and a plurality of antenna elements to which signals output from the respective phase shift circuits are input. At least one of the plurality of phase shift circuits has a signal line in which a first region in which paired dielectric members are disposed, a second region in which no paired dielectric members is disposed and a third region in which paired dielectric members are disposed are provided in this order along a propagation direction of a signal. Moreover, a characteristic impedance of the first region in a state where the paired dielectric members are not disposed and a characteristic impedance of the third region in a state where the paired dielectric members are not disposed are higher than a characteristic impedance of the second region.