Abstract: A Wilkinson power divider is embedded in a multi-layer printed circuit board (PCB). In one example, the power divider is configured as an embedded coplanar waveguide with ground (CPWG) device. In another example, the embedded Wilkinson power divider is configured using striplines. In both examples, a resistive foil is used as the isolation resistor of the Wilkinson power divider. In some examples, the two arms of the Wilkinson power divider have semi-oval shapes. The device may be configured to provide a wide impedance bandwidth (e.g., in the range of 24-31 GHz) with minimal return loss and insertion loss. Cascaded configurations are also described herein.

Abstract: A composite resonator includes: a first conductor extending in a first plane direction; a second conductor separated from the first conductor in a first direction and extending in the first plane direction; a third conductor separated from the second conductor in the first direction and extending in the first plane direction; a fourth conductor separated from the third conductor in the first direction and extending in the first plane direction; and a plurality of connection conductors parallel to the first direction, the plurality of connection conductors being provided along a periphery of the first conductor, the second conductor, the third conductor, and the fourth conductor. The plurality of connection conductors are configured to electromagnetically connect the first conductor, the second conductor, the third conductor, and the fourth conductor.

Abstract: A composite filter component includes a filter causing a signal of a band AL reception band to pass through, a filter causing a signal of a band BL reception band to pass through, a filter causing a signal of a band AM reception band configured to be simultaneously received with a signal of the band AL to pass through, a filter causing a signal of a band BM reception band configured to be simultaneously received with a signal of the band BL to pass through.

Abstract: The present disclosure relates to a communication device such as a multiplexer or a demultiplexer, comprising: a housing comprising a common first port and a plurality of second ports; a plurality of cavity filters for transmitting a wireless signal between the first port and a corresponding one of the second ports, each of the plurality of cavity filters comprising one or more cavities formed in the housing and a resonator arranged in each cavity; and a coupler for coupling the first port to each cavity filter. The coupler is arranged in one cavity of each cavity filter, and is coupled to the resonator in the one cavity.

Abstract: Disclosed is a millimeter-wave (mmWave) band LC filter that is applied to a high-frequency signal in a mmWave band. The mmWave band LC filter includes a first ground layer providing an electrical ground, a second ground layer, a via wall having an end connected to the first ground layer and another end connected to the second ground layer, a blocking wall dividing a resonance space into sub-spaces, holes formed in the second ground layer to open the sub-spaces, pins connected to the first ground layer while passing through the holes, pin electrodes connected to the pins and spaced apart from the second ground layer while facing a portion of the second ground layer, a floating electrode spaced apart from the pin electrodes while facing portions of two of the pin electrodes, and input/output terminals connected to the pin electrodes or the floating electrode and configured to receive and output signals.

Abstract: The dynamic ultra-selective waveguide filter (DUST) assembly includes a stack of a plurality of substrate integrated waveguide (SIW) filters, each of which includes a first and second conductive layers, a dielectric layer disposed between the first and second conductive layers to form a waveguide between an input port and an output port, and a plurality of conductive couplers that interconnect the first conductive layer and the second conductive layer through the dielectric layer. The DUST assembly further includes a switch network coupled to the stack of the SIW filters to provide discretely switched tuning or continuous tuning. The switch network includes Super Lattice Castellated Field Effect Transistor (SLCFET) switches to operate the discretely switched tuning or the continuous tuning.

Abstract: An improved transition between a central contact of a coaxial component and a transmission line, such as a radio-frequency transmission line, is provided. The transition may be between a central contact of a coaxial component and a transmission line of a circuit such as a radio-frequency circuit. The central contact has a cylindrical front portion and, extending its front portion, a rear portion that makes contact with the transmission line and that is fastened thereto by a solder joint. The rear portion has at least one gap, defining a volume forming a reserve for the solder of the solder joint.

Abstract: A multilayer common mode filter of the present disclosure is a filter comprising a plurality of coils configuring mutually different channels, wherein a plurality of coil patterns, and a plurality of via conductors connecting the coil patterns are provided inside a coil stack, and the plurality of via conductors are arranged, on a floor plan of the coil stack, in positions where same do not overlap with each other.

Abstract: A dielectric waveguide resonator includes: a dielectric resonant cavity including a dielectric body and a metal plating layer wrapping an outer surface of the dielectric body; and a metal interface provided in the dielectric body and connected to the metal plating layer, where the metal interface intersects a direction of an intrinsic electric field of the dielectric resonant cavity. The dielectric waveguide resonator includes a blind hole recessed inwards from a surface of the dielectric body, where a bottom surface of the blind hole includes the metal interface, and where an axial direction of the blind hole corresponds with the direction of the intrinsic electric field of the dielectric resonant cavity.

Abstract: A filter comprises: a plurality of resonators, each of which is provided with a via electrode and capacitor electrodes; a first shielding conductor; and a first coupling capacitance electrode that faces the first shield conductor and is not connected to any of the plurality of resonators. The first coupling capacitance electrode is formed on a layer on which a first capacitor electrode is formed, and a part of the first coupling capacitance electrode is positioned between a second capacitor electrode and the first shield conductor.

Abstract: A filter device applied to a radio-frequency circuit includes a dielectric substrate on which a ground electrode is disposed and a main line which has an input end and an output end. The filter device also includes first and second resonators and an intermediate resonator. The main line is disposed to face the ground electrode and extends in a first direction. The first resonator intersects the main line and extends in a second direction. The second resonator intersects the main line and extends in the second direction in a region further to an output end side than the first resonator. At least part of the intermediate resonator is disposed between the first resonator and the second resonator.

Abstract: The disclosure relates to transition structures for digital signal transmission and digital transmission lines including the same for transmitting digital signals at an ultra-high speed of approximately 100 Gbps. According to the present disclosure, it is possible to transmit digital signals at ultra-high speed while solving problems such as interference between lines or phase difference 180° of existing differential lines by connecting balanced lines to differential lines with two lines of opposite polarities using optimized transition structures of various shapes or digital transmission lines with a plurality of dielectric substrates.

Abstract: A new harmonic slide screw impedance tuner for VHF-UHF frequencies uses a reduced overall length spiral slabline structure and three rotating carriages allowing reducing the linear size of the tuner from originally L=3?/2 to a spiral length L=2?RN of a cylinder with 2R diameter and a height H made up of N floors (example: F=100 MHz, ?=300 cm, R=10 cm, N=10 floors of 2 cm each, yields a 20×20 cm cylinder versus a 450 cm linear slabline; a core reduction of 450/20=23). The slabline stands vertically on the bench table surface and the carriages, including the tuning probes rotate and wind up and down around a vertical axis through the center of the spiral slabline, controlled by a rack- and pinion spiral arrangement on the edge of the spiral slabline. The rotation of the carriages controls the phase of GAMMA and the insertion of the tuning probes into the channel of the slabline controls its amplitude.

Abstract: A plurality of pairs of ground vias which are arranged, in a planar view, facing each other on opposite sides of the slit may include, in a direction that the slit extends in a planar view from a center of the second opening, at least one pair of first ground vias, which are positioned within a first distance range, and at least one pair of second ground vias, which are positioned within a second distance range. A minimum distance between via-walls of the at least one pair of first ground vias may be wider than a minimum distance between via-walls of the at least one pair of second ground vias. A signal at a first frequency band may be transmitted through the transmission line at a first resonating mode, and a signal at a second frequency band may be transmitted through the transmission line at a second resonating mode.

Abstract: An object is to provide a stepped impedance resonator capable of efficiently reducing a footprint. A resonator includes a coplanar waveguide and a section. The coplanar waveguide has a first impedance. The section has a second impedance different from the first impedance and includes a fishbone waveguide. The resonator is configured as a stepped impedance resonator in which the coplanar waveguide and the section including the fishbone waveguide are connected in series.

Abstract: A transition between a strip conductor connection and a waveguide for a high-frequency connection. A strip conductor connection is arranged on a carrier substrate and is adjoined by a transition to a waveguide structure integrated into the carrier substrate. This waveguide structure integrated into the carrier substrate is adjoined by a waveguide on an outer side of the carrier substrate.

Abstract: A multiplexer includes a dielectric base plate, a connection structure, and a plurality of bandpass filters with different operation frequencies. A conductive thin film layer is disposed on a side plane of the dielectric base plate, and includes a signal wire and one or more grounding plates on a side of the signal wire. The connection structure is disposed on the conductive thin film layer, and includes a main branch and a plurality of branches, where the main branch is connected to the plurality of branches respectively, and serves as an input port of the multiplexer. Each of the plurality of bandpass filters is connected to the signal wire and the one or more grounding plates. The bandpass filter includes a first port and a second port, the first port is connected to a corresponding branch, and the second port serves as one of output ports of the multiplexer.

Abstract: A dielectric filter includes a housing, a dielectric resonator, a cover plate, and a tuning structure. A resonant slot is disposed on the housing, a support portion is disposed in the resonant slot, and the support portion encloses to form an intermodulation groove at a slot bottom of the resonant slot. The dielectric resonator is mounted on the support portion and covers a groove opening of the intermodulation groove, multiple adjustment holes are disposed on the dielectric resonator, and the multiple adjustment holes communicate with the intermodulation groove. The cover plate is connected to the housing, covers an opening of the resonant slot, and is spaced apart from the dielectric resonator. The tuning structure is connected to the cover plate, where each of the multiple adjustment holes is configured with one tuning structure.

Abstract: The present disclosure relates to a dielectric cavity resonator, comprising: a metallic resonance cavity having a cuboid shape defining three orthogonal axes x, y, z substantially aligned with walls of the metallic resonance cavity and having a central axis extending in the z direction; a dielectric core provided in the metallic resonance cavity, the dielectric core comprising: a central part extending coaxially with respect to the central axis of the metallic resonance cavity; and four columnar parts arranged around the central part and integrally formed with the central part and each extending in the z direction and having a petal-like shape in an x-y cross-section perpendicular to the z direction, every two adjacent columnar parts being spaced by a groove, the dielectric core being centrosymmetric and axisymmetric in each x-y cross-section perpendicular to the z direction, wherein the metallic resonance cavity has a square cross-section, and in each petal-like cross-section, each columnar part extends in a

Abstract: The present disclosure relates to a cavity filter assembly and, particularly, comprises: a filter body having a cavity, which is a predetermined space therein; and at least one resonance bar having a front end surface that forms a stamped part, which is a protruding surface protruding from the bottom surface of the filter body toward the cavity so as to be parallel to the bottom surface of the filter body in the cavity, for frequency tuning in the cavity, and having a tuning correction hole that penetrates the stamped part, wherein the resonance bar allows frequency tuning to be performed in the cavity through stamping on the outer surface of the stamped part from the outside of the filter body, and the tuned frequency can be corrected through the tuning correction hole, and thus the advantages of reducing the total weight and component costs of an antenna device and improving product productivity are provided.