A printed circuit board is provided, comprising a horizontally extending dielectric substrate and a substrate integrated waveguide (SIW). The SIW comprises two horizontally disposed conductive ground planes spaced by a vertical distance, and two vertically disposed conductive fences spanning therebetween. The fences extend in a first horizontal direction, and are spaced from one another in a second horizontal direction, perpendicular to the first horizontal direction. A space defined between the ground planes and the fences comprises material of the substrate formed with one or more channels being free of material of the substrate and extending in the first horizontal direction. Each of the channels is formed by a plurality of vertical cylindrical cavities, and each cavity horizontally overlaps one or more adjacent cavities.

A radio frequency (RF) connector includes an insulating portion configured in a cylindrical shape; an outer conducting portion configured in a cylindrical shape and disposed to surround an outer circumferential surface of the insulating portion; and an inner conducting portion disposed inside the insulating portion in a hollow shape and having both ends protruding from the insulating portion, the insulating portion electrically separating the outer conducting portion from the inner conducting portion.

An illustrative example electronic device includes a substrate integrated wave guide (SIW) comprising a substrate and a plurality of conductive members in the substrate. An antenna member is situated at least partially in the substrate in a vicinity of at least some of the plurality of conductive members. A signal generator has a conductive output electrically coupled with the antenna member. The antenna member radiates a signal into the SIW based on operation of the signal generator.

An illustrative example electronic device includes a substrate integrated wave guide (SIW) comprising a substrate and a plurality of conductive members in the substrate. An antenna member is situated at least partially in the substrate in a vicinity of at least some of the plurality of conductive members. A signal generator has a conductive output electrically coupled with the antenna member. The antenna member radiates a signal into the SIW based on operation of the signal generator.

A coaxial waveguide transducer includes: a waveguide having a substantially L shape formed of a first waveguide part and a second waveguide part arranged substantially orthogonal to each other; a stepwise step bend part formed in an outer corner part of an L-shaped bent part of the waveguide; a first conductor and a second conductor arranged in respective inner side walls of the waveguide in such a way that they are extended in a direction in which a central conductor of the coaxial line is extended and are positioned on a plane the same as that where the central conductor is provided; and a third conductor having one end connected to the central conductor and another end connected to one of the first conductor and the second conductor, the third conductor being arranged obliquely with respect to the direction in which the central conductor is extended.

A coaxial waveguide transducer includes: a waveguide having a substantially L shape formed of a first waveguide part and a second waveguide part arranged substantially orthogonal to each other; a stepwise step bend part formed in an outer corner part of an L-shaped bent part of the waveguide; a first conductor and a second conductor arranged in respective inner side walls of the waveguide in such a way that they are extended in a direction in which a central conductor of the coaxial line is extended and are positioned on a plane the same as that where the central conductor is provided; and a third conductor having one end connected to the central conductor and another end connected to one of the first conductor and the second conductor, the third conductor being arranged obliquely with respect to the direction in which the central conductor is extended.

Disclosed is a transmission line-waveguide transition device including side surfaces and a top surface having a size and shape corresponding to a waveguide to which a signal of a transmission line is transmitted, the side surfaces and top surface having a plate shape; and a plate-shaped ridge formed in an inner space defined by the side surfaces and the top surface, the ridge being provided with a slope having one end connected to the transmission line and an opposite end contacting the top surface.

Disclosed is a transmission line-waveguide transition device including side surfaces and a top surface having a size and shape corresponding to a waveguide to which a signal of a transmission line is transmitted, the side surfaces and top surface having a plate shape; and a plate-shaped ridge formed in an inner space defined by the side surfaces and the top surface, the ridge being provided with a slope having one end connected to the transmission line and an opposite end contacting the top surface.

The present invention relates to a cavity filter and, in particular, provides an advantage of preventing performance deterioration of an antenna device by efficiently absorbing an assembly tolerance which may occur due to assembly design and preventing an interruption of an electrical flow, by comprising: an RF signal connecting part provided to be spaced apart at a predetermined distance from an external member having an electrode pad formed on one surface thereof; a terminal part which electrically connects the electrode pad of the external member to the RF signal connecting part, while absorbing an assembly tolerance existing within the predetermined distance and simultaneously preventing an interruption of an electrical flow between the electrode pad and the RF signal connecting part; a dielectric body which is inserted into a terminal insertion hole so as to surround the outside of the terminal part; and an elastic member which has a portion of the edge supported by the dielectric body and which elastically supports the terminal part by means of an operation in which a hollow part is deformed in the vertical direction when an assembly force is transmitted to the terminal part supported to pass through the hollow part, wherein the terminal part comprises one terminal brought into contact with the electrode pad and the other terminal connected to the RF signal connecting part.

An apparatus includes a signal splitter configured to receive an input signal for transmission and to split the input signal to form two or more sub-signals. The apparatus further includes a first amplifier configured to generate a first amplified sub-signal, a second amplifier configured to generate a second amplified sub-signal, a first launcher coupled to the first amplifier and to a waveguide, and a second launcher coupled to the second amplifier and to the waveguide. The first and second launchers are coupled to the waveguide such that a first radiative signal generated by the first launcher responsive to the first amplified sub-signal and a second radiative signal generated by the second launcher responsive to the second amplified sub-signal are combined in the waveguide to form a transmission signal corresponding to the input signal.