Abstract: A microwave resonator with impedance jump, comprises at least one line of high characteristic impedance of a determined length and one line of low characteristic impedance, at least the line of high characteristic impedance comprising a first line cut, a first link wire of a first determined impedance ensuring an electrical link for the passage of the signal from one side to the other of the first line cut. A method for producing a microwave resonator comprising an adjustment step is also provided.

Abstract: The present invention relates to a band stop filter comprising: a resonating bar; a housing on the inside of which is formed a receiving space where the resonating bar is positioned, and which is made in a stepped form such that at least one part of an upper-end part is narrower than a lower-end part in terms of the internal width of the receiving space during the formation of the receiving space; a lower cover which has the resonating bar fitted thereto, is joined to the lower part of the housing and, when so joined, is assembled such that the resonating bar is inserted into the receiving space, and which forms the floor surface of the receiving space; and a hermetic-sealing cover which is provided within a recess pre-made in the housing in such a way as to couple with a resonator formed by the receiving space and the resonating bar on the inside of the receiving space, and is designed to hermetically seal the recess in the housing where a transmission line has been provided.

Abstract: A Yttrium Iron Garnet (YIG) tuned band reject filter using one or more Shunt YIG resonators provides for much wider minimum rejection bandwidths without increasing maximum 3 db bandwidths or spurious response. Various configurations of a tunable shunt YIG tuned band reject filter achieves a wide rejection bandwidth at the low end of the tuning range while keeping the maximum 3 db bandwidth, normally occurring at the high end of the tuning range, to a minimum.

Abstract: A laminate defining a high-frequency laminated component includes a ground electrode on a bottom surface of a lowermost insulating layer. A second insulating layer includes an inner-layer ground electrode arranged over substantially the entire surface thereof. A portion from a third insulating layer to a fifth insulating layer is provided with a capacitor electrode defining a series capacitor of a ground impedance adjustment circuit and capacitor electrodes defining a first parallel capacitor and a second parallel capacitor. A sixth insulating layer has an inner-layer ground electrode provided over substantially the entire surface thereof. The inner-layer ground electrodes are arranged in electrical continuity with the ground electrode by via holes.

Abstract: The millimeter waveband filter includes: a transmission line that is formed by a waveguide which propagates electromagnetic waves with a predetermined frequency range of a millimeter waveband from one end to the other end in a TE10 mode; and a pair of radio-wave half mirrors that are disposed opposite each other with a space interposed therebetween so as to block the inside of the transmission line and have planar shapes and a characteristic of transmitting a part of the electromagnetic waves with the predetermined frequency range and reflecting a part thereof. In the electromagnetic waves incident from the one end side of the transmission line, a frequency component centered on a resonant frequency of a resonator, which is formed between the pair of radio-wave half mirrors, is selectively output from the other end of the transmission line.

Abstract: This disclosure provides implementations of electromechanical systems (EMS) resonator structures, devices, apparatus, systems, and related processes. In one aspect, a device includes an evanescent-mode electromagnetic-wave cavity resonator. In some implementations, the resonator includes an isotropically-etched cavity operable to support one or more evanescent electromagnetic wave modes. In some implementations, the resonator also includes a cavity ceiling arranged to form a volume in conjunction with the isotropically-etched cavity. In some implementations, the resonator also includes a capacitive tuning structure having a portion that is located at least partially within the volume so as to support the evanescent electromagnetic wave modes. In some implementations, a distal surface of the tuning structure is separated from the closest surface to it by a gap distance, a resonant electromagnetic wave mode of the cavity resonator being dependent at least partially on the gap distance.

Abstract: A system for coupling teraherz (THz) radiation to a coaxial waveguide comprises an antenna that generates THz radiation having a mode that matches the mode of the waveguide. The antenna may comprise a pair of concentric electrodes, at least one of which may be affixed to or formed by one end of the waveguide. The radiation may have wavelengths between approximately 30 ?m and 3 mm. The waveguide may comprise an inner core and an outer wall defining an annular region. A terahertz sensor system may comprise a terahertz antenna comprising first and second concentric electrodes, means for generating a field across the trodes and means for triggering the emission of terahertz radiation, a first waveguide having first and second ends, said first end being coupled to said antenna so as to receive at least a portion of said terahertz radiation, and a sensor for detecting said terahertz radiation.

Abstract: A wideband bandpass filter includes an RF input terminal, an RF output terminal, a plurality of electrically tunable coupling capacitors coupled in series between the RF input and output terminals, and a plurality of resonating circuits each including an electrically tunable resonator capacitor coupled to one of the coupling capacitors. At least one resistance is coupled in series between at least one of the coupling capacitors for providing enhanced out of band rejection of the filter.

Abstract: A dual mode filter (200, 500, 900) comprising an input (Pin) and an output port (Pout) and a non-conducting substrate (205, 505), and first (215, 510, 902) and second (210, 540, 901) conductors which connect the input port to the output port. The conductors are arranged on or in the substrate, and the first conductor is longer than the second conductor by 50%. Either the first or the second conductor comprises a perturbation element (208, 530, 915) at a central position. The first conductor is arranged between the input port and the output port with a number of sections (216-222; 511-519; 931-933, 936-938), at least some of which are parallel to each other, and arranged so that the current in a section which has one or more other sections in parallel to it always flows in the same direction as the current in the most adjacent of said other sections.

Abstract: A reconfigurable bandpass filter including at least a tunable planar combline filter including varactor diodes arranged on a carrier board. For automatic calibration of adjustment of blocking voltage during operation, the reconfigurable bandpass filter includes a filter control offering an external abstracted interface. A memory is connected with the filter control. The memory stores calibration data. For approximating of the best possible filter characteristic, the filter control determines, based on memorized data, the best configuration of tuning voltages. The reconfigurable bandpass filter can be used in the field of secondary radar systems.

Abstract: A cavity filter device includes a micro-strip structure comprising a low dielectric organic material forming a printed wiring board. The printed wiring board may be soldered, welded, or adhered to the base of one or more cavity filters. The cavity filter may include a coupling pin such as a RF pin positioned at the base of the filter. The micro-strip structure may be configured to carry a RF signal from the input, across the micro-strip structure to the RF pin positioned at the base of the filter.

Abstract: A non-contacting rotary interface has a first core with a first pair of balanced transmission lines coupled to the first core and a second core moveable in relation to the first core with a second pair of balanced transmission lines coupled to the second core and configured to receive signals from the first pair of balanced transmission lines. The first pair of balanced transmission lines has a first transmit wire coupled to a termination point at a first end of the first transmit wire, a first transmitter coupled to the first transmit wire at a second end of the first transmit wire, a second transmit wire coupled to the termination point at a first end of the second transmit wire, and a second transmitter coupled to the second transmit wire at a second end of the second transmit wire. The balanced transmission lines may be electrical traces on a circuit board.

Abstract: A tunable bandpass filter integrated circuit includes a filter core including at least two spaced conductor layers, a plurality of peripherally spaced backside vias extending between the conductor layers defining a resonator cavity, at least one internal backside via, and a tunable impedance connected in series with the internal backside via between the conductor layers for adjusting the resonance of the cavity.

Abstract: A resonant via structure is provided with a multilayer substrate, a signal via conductor and ground vias. The multilayer substrate includes conductor layers and a dielectric. The dielectric isolates each of the conductor layers. The signal via conductor is disposed through the multilayer substrate. The ground vias are disposed through the multilayer substrate and around the signal via conductor. The dielectric comprises two sections disposed between the signal via and ground vias, in the plane of conductor layers. The first section is disposed between the first layer and other layer of the conductor layers. The second section is disposed between the other layer and the last layer of the conductor layers.

Abstract: The present invention discloses a filter for removing noise, which includes: a lower magnetic body; an insulating layer provided on the lower magnetic body and including at least one conductor pattern; and an upper magnetic body including a primary ferrite composite provided on the insulating layer and a secondary ferrite composite provided on the primary ferrite composite to cover a pore formed on a surface of the primary ferrite composite, and a method of manufacturing the same. According to the present invention, it is possible to implement a filter for removing noise with high performance and characteristics by increasing magnetic permeability and improving impedance characteristics through simple structure and process.

Abstract: [OBJECT] It is an object to provide a dielectric waveguide filter with attenuation poles, which is capable of suppressing deterioration in a high band-side attenuation characteristic with respect to a low band-side attenuation characteristic. [SOLUTION] A dielectric waveguide filter comprises a plurality of dielectric waveguide resonators each having a rectangular parallelepiped-shaped dielectric block, periphery of which is covered by a conductor film. The dielectric waveguide resonators are configured to form a main coupling path, and a sub coupling path bypassing a part of the main coupling path. The part of the main coupling path bypassed by the sub coupling path includes at least one capacitive coupling path.

Abstract: An electrical device that comprises a tunable cavity filter that includes a container and a post. The container encloses a cavity therein, wherein interior surfaces of the container are covered with a metal layer. The post is configured be movable through an opening in the container such that at least a portion of the post is locatable inside of the cavity.

Abstract: A duplexer includes: a reception filter connected between a reception terminal and an antenna terminal; a transmission filter connected between a transmission terminal and the antenna terminal; and a wiring substrate including the reception filter and the transmission filter on an upper surface, the reception terminal, the transmission terminal and the antenna terminal being formed on a lower surface, and a reception electrode electrically connected to the reception terminal, a transmission electrode electrically connected to the transmission terminal, an antenna electrode electrically connected to the antenna terminal, and a circular metal layer surrounding the reception, transmission and antenna electrodes, and electrically connected to a ground being formed on an upper surface, wherein a shortest distance between a side of the circular metal layer closest to the reception and transmission terminals and the reception electrode is larger than a width of the side of the circular metal layer.

Abstract: The adjustable resonator according to the invention has a casing, which is composed of walls, a lid and a bottom, a resonator cavity inside the casing and an internal conductor inside the resonator cavity, which internal conductor is in electric contact with the casing. The resonator further comprises a moveable adjustment piece, which comprises a conductive adjustment member, a conductive upper plate, and a dielectric support member. The adjustment member has a stem, which is vertical, and a cap as an expansion thereof. The adjustment member can be moved downwards so that its stem and the fixed internal conductor connected to the bottom of the resonator go within each other. The movement of the adjustment piece in the coaxial resonator first decreases the resonance frequency and then slowly increases it. Therefore the resonator provides a very wide adjustment area for the resonance frequency.

Abstract: A right circular cylindrical body of an isotropic dielectric such as a cross-linked styrene copolymer, has respective pluralities of mutually parallel grooves formed in its axial end faces, spaced apart by an intermediate portion whose dimension c is a half wavelength. The axial lengths a, b of the grooves are such that when a wave passes through the body, a quarter wavelength phase difference is produced between a component of a wave having its E-vector parallel to the grooves and a component of the wave having its E-vector orthogonal to the grooves. Alternatively the plate may consist of two or more discrete bodies whose grooves are dimensioned to produce a total differential phase shift of one quarter wavelength.