Abstract: A band-pass filter for microwave is provided that can be frequency-tuned the filter comprising an input resonator comprising a metal input cavity and an input dielectric element, an output resonator comprising a metal output cavity and an output dielectric element, an input excitation means (S1) of elongate shape, an output excitation means of elongate shape, the input resonator and the output resonator being coupled, characterized in that the input dielectric element and the output dielectric element have a recess, the input excitation means penetrates the recess of the input dielectric element the output excitation means penetrates the recess of the output dielectric element, the input dielectric element is capable of carrying out a rotation about an input rotation axis, the rotations of the dielectric elements allowing the modification of the central frequency of the filter.

Abstract: An embodiment of the present invention provides a method of applying patterned metallization to a ceramic block comprising applying a photodefinable ink to said ceramic block; drying said ink; exposing said photodefinable ink to UV radiation through a predefined mask according to the thickness of the film to form a pattern; developing said pattern in a developer solution thereby forming a patterned ceramic block; and rinsing, drying and firing said patterned ceramic block.

Abstract: A balance filter packaging chip having a balun mounted therein and a manufacturing method thereof are provided. The balance filter packaging chip includes a device substrate; a balance filter mounted on the device substrate; a bonding layer stacked on a certain area of the device substrate; a packaging substrate having a cavity formed over the balance filter, and combined with the device substrate by the bonding layer; a balun located on a certain area over the packaging substrate; and an insulator layer for passivating the balun. Accordingly, the present invention can reduce an element size and simplify a manufacturing process.

Abstract: Various multi-mode resonant filters including a housing having a cavity, are provided. The multi-mode resonant filters include a Dielectric Resonant (DR) element received in the cavity of the housing, and a plurality of transmission lines for connecting a point on one of a first axis, a second axis, and a third axis with a point on another axis. The first axis, the second axis, and the third axis are orthogonal to each other with respect to a center of the DR element.

Abstract: The present invention uses TE01(n?) single-mode resonators in different orientations that are cascaded along an evanescent mode waveguide. By exploiting multiple orthogonal evanescent modes that can alternatively by-pass, or excite the resonators, cross-coupling between non-adjacent resonators is established and properly controlled. Pseudoelliptic filters are realized without using cumbersome cross-coupled architectures, or reduced spurious performance multi-mode resonators. A 6th order filter with two transmission zeros in the lower stopband, a 5th order filter with three transmission zeros, and an 8th order filter with four transmission zeros are included as embodiments of the present invention.

Abstract: A resonator cavity for supporting a plurality of resonant modes and filtering electromagnetic energy includes a cavity and a resonator element with a mounting flange. The cavity is defined by a top end wall, a bottom end wall and a sidewall and has a longitudinal axis along its length is defined. The resonator element is positioned within the cavity along the longitudinal axis and includes a mounting flange. The resonator element is only in physical contact with the cavity through the mounting flange at a mounting location and where at least one resonant mode of the electromagnetic energy exhibits a local minimum. The dimensions of the cavity and the resonator element are selected so that the associated electromagnetic energy is defined by an electromagnetic field pattern that substantially repeats itself at least twice along the length of the resonator.

Abstract: There are provided a dielectric ceramic having a high Qf value in a relative permittivity ?r range of 35 to 45, and a small absolute value of a temperature coefficient ?f which indicates change of the resonant frequency in a wide temperature range from a low temperature range to a high temperature range, and a dielectric filter having the dielectric ceramic. A dielectric ceramic includes: a main component, molar ratios ?, ?, and ? satisfying expressions of 0.240???0.470, 0.040???0.200, 0.400???0.650, and ?+?+?=1 when a composition formula of the main component is represented as ?ZrO2.?SnO2.?TiO2; and Mn, a content of Mn in terms of MnO2 being greater than or equal to 0.01% by mass and less than 0.1% by mass with respect to 100% by mass of the main component.

Abstract: An ultra wide band-pass, absorptive band-reject filter has a pair of quadrature hybrid couplers cascaded and coupled by a phase shifting element and a matched pair of band-reject filters in two parallel paths. The matched pair of band-reject filters each rejects signals in a desired reject frequency band. The quadrature hybrid couplers each have an insertion loss amplitude crossover for signals propagated to terminals across the coupler that coincides with the reject frequency band. The phase shifting element is configured to have a phase shift of 180 degrees at frequencies in the reject frequency band. In a preferred embodiment, the pair of quadrature hybrid couplers are identical in performance and the band-reject filters are identical in performance with respect to a center frequency fn of the reject frequency band. The absorptive band-reject filter thereby provides an absorptive rejection response in the reject frequency band while a very wide pass-band frequency range is maintained.

Abstract: A multi-cavity RF filter has at least one electrically conductive coupling probe disposed between two resonator cavities. The coupling probe is provided with an ESD protective arrangement such that the coupling probe is electrically connected to a metallic housing of the RF filter only by the ESD protective arrangement. The ESD protective arrangement is configured to provide (i) a low resistance electrical path from the coupling probe to the metallic housing and (ii) a high impedance to RF energy having wavelengths proximate to a center frequency wavelength of the RF filter.

Abstract: An electronic component includes a capacitor having a desired capacitance value and a laminate including a plurality of laminated insulating material layers. Land electrodes are provided on a bottom surface of the laminate. Internal conductors face the land electrodes, respectively, across the insulating material layer within the laminate, have areas larger than those of the land electrodes, respectively, and contain the land electrodes, respectively, when seen in a planar view from a z-axis direction. A capacitor conductor is provided on the positive direction side of the capacitor conductors in the z-axis direction and faces the capacitor conductors.

Abstract: An electrical filter structure for forwarding an electrical signal from a first filter port to a second filter port in a frequency-selective manner includes a filter core structure having a working impedance, wherein the working impedance is different from a first characteristic port impedance of a first filter port, and also different from a second characteristic port impedance of a second filter port. The electrical filter structure also includes a first matching arrangement electrically coupled between the first filter port and the filter core structure and a second matching arrangement electrically coupled between the second filter port and the filter core structure.

Abstract: A dielectric resonator filter and a method of manufacturing the same are disclosed. The dielectric resonator includes a metal housing having a top surface and a bottom surface and defining a resonator cavity, and a dielectric rod located within the resonator cavity. The dielectric rod is short-circuited at both the top surface and the bottom surface. A plurality of holes are formed in the dielectric rod parallel to an axis of the dielectric rod and a plurality of apertures are formed on the top surface corresponding to the positions of the holes, respectively. A plurality of screws are inserted into the holes through the apertures, respectively. The dielectric resonator supports dual TM11 degenerate modes, each of which forms an electric resonator. An insertion depth and a dimension of each of the screws is adjustable to adjust resonance frequencies of the dual degenerate modes and coupling between the dual degenerate modes.

Abstract: This left-handed substance comprises an array of conductive wires positioned relative to one another in such a way as to present a negative permittivity relative to the electromagnetic waves which have an electrical field parallel to the biggest dimension of these wires and are propagated at a frequency below the electrical plasma frequency of the substance, each wire being made out of a conductive magnetic material having negative permeability for a range of frequencies of the electromagnetic waves below the electrical plasma frequency of the substance and when there is no external artificial static magnetic field. Each wire comprises at least one strip, made out of a conductive magnetic material that extends along the greatest dimension of the wire in a plane of the strip and has a thickness at least twice as small as the skin thickness of the conductive magnetic material.

Abstract: A cavity filter includes a slider, a driving device, an adapter and a resilient member. The slider is used to slide relative to and couple with a plurality of resonators located in the cavity filter to change a resonating frequency of the cavity filter. The driving device is used to drive the slider slide relative to the plurality of resonators. The adapter is installed between the slider and the driving device. The resilient member is elastically connected between the slider and the adapter and used to absorb vibrations of the driving device to make the slider move on an even keel.

Abstract: A tuneable filter comprising at least one resonator body comprising a resonant cavity defined by an electrically conducting cavity wall, the cavity wall comprising a grounding face, a capacitive face and a surrounding wall extending therebetween; a resonator within the cavity; and, a detuning arm arranged within the cavity substantially parallel to the capacitive face, the detuning arm being adapted to rotate in a plane substantially parallel to the capacitive face about a detuning axis.

Abstract: A unit of a metamaterial includes an uppermost part electrode, a lowermost part electrode, a first internal electrode, a second internal electrode, a third internal electrode, a fourth internal electrode, and a transmission line. The transmission line connects a section of the uppermost part electrode which extends in the ?z direction to a section of the lowermost part electrode which extends in the +z direction. The length of the transmission line is set to substantially ½ of a resonant wavelength. The first internal electrode and the fourth internal electrode are respectively placed so as to be opposed to the uppermost part electrode and the lowermost part electrode. The first internal electrode and the fourth internal electrode are not electrically connected directly to each other.

Abstract: The present invention relates to a resonator and discloses a transverse magnetic mode dielectric resonator, a transverse magnetic mode dielectric filter, and a base station. By using the present invention, good contact between contact surfaces and convenient assembly can be achieved. Moreover, the transverse magnetic mode dielectric resonator according to the embodiments of the present invention has good structure stability, convenient assembly, and strong realizability, thereby being suitable for mass production and having good mass production consistency.

Abstract: A bandpass filter has a combline structure having a plurality of cascaded nodes. A plurality of nodes in the filter are connected both to resonant elements (a.k.a. resonators) and non-resonant elements (including elements having inductances and/or capacitances that do not resonate in a predetermined frequency band of interest). The resonant frequencies of the resonant elements may be adjusted, in order to adjust the location of the center frequency and/or the width of the passband of the filter. The characteristics of the resonant and non-resonant elements are selected such that the poles of the filter, when plotted on the complex plane, move substantially along the imaginary axis when the resonant frequencies are adjusted, without substantial movement along the real axis. The resulting bandpass filter has substantially constant losses and substantially constant absolute selectivity over a relatively wide range of bandwidths.

Abstract: An I/O system and device for use with superconducting device provides multi-stage filtering using superconducting electrical pathways, while providing good thermal conductivity to maintain low temperature of the various components and allowing the easy mounting and dismounting of a device sample from a refrigerated environment. Filtering may include a lumped element filter assembly including multiple plates each carrying a number of lumped element filters. Filtering may include a metal powder filter assembly including multiple metal power filters formed in passages of a substantially non-magnetic portions. A device sample holder assembly secures a device sample, for example a superconducting quantum processor, and provides signals, ground and good thermal conduction.

Abstract: A semiconductor device includes: a transmission line including a capacitor section and an inductor section arranged on a semiconductor substrate, and a junction of the semiconductor substrate and one of the capacitor section and the inductance section, wherein a transmission characteristic of the transmission line is determined by a voltage applied to the junction.

Abstract: A printed circuit board and an electronic product are disclosed. In accordance with an embodiment of the present invention, the printed circuit board includes a first board, which has an electronic component mounted thereon, and a second board, which is positioned on an upper side of the first board and covers at least a portion of an upper surface of the first board and in which an EBG structure is inserted into the second board such that a noise radiating upwards from the first board is shielded. Thus, the printed circuit board can readily absorb various frequencies, be easily applied without any antenna effect and be cost-effective in manufacturing.

Abstract: Disclosed are a dielectric resonator having simple configuration applicable to a multiple mode with no electrical signal transmission loss, and a method of controlling a resonance state (coupling mode) in the dielectric resonator. The dielectric resonator includes a cylindrical or polygonal external conductor, and a dielectric resonant element arranged at the substantially center of the external conductor. A notched portion is formed at a part of the dielectric resonant element so as to control the resonance state of the dielectric resonator.

Abstract: A filter includes: a container; at least one barrier, an input device and an output device. The at least one barrier divide the space of the container into at least two resonant cavities. Each resonant cavity has a harmonic oscillator disposed therein. The harmonic oscillators includes a supporter and a carbon nanotube structure disposed on a surface of the supporter.

Abstract: A dual mode dielectric resonator (DR) filter has a first DR, and is configured to operate at a HE12? mode within a first frequency band while exhibiting a Q factor of no less than 5000. A first characteristic size of the first DR may be substantially similar to a size of a second DR, where the second DR is configured to operate in a conventional DR filter at a HE11? mode within a second frequency band, the second frequency band being substantially lower than the first frequency band.

Abstract: An oscillator device manufacturing method includes: placing an oscillator provided with electrodes on a convex pedestal provided on an assembly table; arranging, on the assembly table, a frame member including an opening surrounded by a frame thereof and provided with electrode pads on the frame such that the opening is positioned at the pedestal; connecting the electrode pads to the electrodes of the oscillator placed on the pedestal via wires, while the frame member is arranged on the assembly table; removing the frame member from the assembly table together with the oscillator after the connecting, and bonding the frame member connected to the oscillator to a substrate. By using the method, the oscillator device including the oscillator suspended in air above the substrate can be efficiently manufactured. In stead of using the frame member, a frame body in which frame members are arrayed can be employed.

Abstract: A dielectric resonator body for a multi-mode cavity filter, the resonator body including: a piece of first dielectric material, with at least one substantially flat face for mounting on a substrate, the piece of first dielectric material having a shape such that it can support at least a first resonant mode and at least one spurious response; and a layer of conductive material at least partially coating the resonator body; wherein the piece of first dielectric material includes at least one region having a different dielectric constant to the first dielectric material, whereby the presence of the region of different dielectric constant alters the frequency separation of the resonant mode and the spurious response.

Abstract: A multi-mode cavity filter having a dielectric resonator body incorporating a piece of dielectric material, the piece of dielectric material having a shape such that it can support at least two substantially degenerate resonant modes; and a coupling structure comprising a plurality of independent coupling elements for coupling signals to the piece of dielectric material.

Abstract: A dielectric resonator body for a multi-mode cavity filter, the resonator including: a piece of dielectric material, with at least one substantially flat face for mounting on a substrate layer, the piece of dielectric material having a shape such that it can support at least a first resonant mode and at least one substantially degenerate resonant mode; wherein the shape of the piece of dielectric material is such that the first resonant mode and the at least one substantially degenerate resonant mode are capable of being simultaneously independently excited, and wherein the piece of dielectric material is at least partially covered with a layer of conductive material.

Abstract: A cavity filter, including a dielectric resonator structure comprising a piece of dielectric material having a shape such that it can support a first resonant mode and a second resonant mode which is substantially degenerate with the first resonant mode; and a coupling structure for exciting a resonant mode within the piece of dielectric material or extracting energy from a resonant mode within the piece of dielectric material; wherein the coupling structure consists of a single patch element in contact with a surface of the piece of dielectric material, the patch element being arranged to couple directly to said first and second resonant modes simultaneously.

Abstract: A multi-mode cavity filter, comprising: at least one dielectric resonator body incorporating a piece of dielectric material, the piece of dielectric material having a shape such that it can support at least a first resonant mode and at least a second substantially degenerate resonant mode; a layer of conductive material in contact with and covering the dielectric resonator body; and a coupling structure comprising at least one electrically conductive coupling path for at least one of inputting signals to the dielectric resonator body and outputting signals from the dielectric resonator body, the at least one electrically conductive coupling path being arranged for at least one of directly coupling signals to the first resonant mode and the second substantially degenerate resonant mode in parallel, and directly coupling signals from the first resonant mode and the second substantially degenerate resonant mode in parallel.

Abstract: A multi-mode cavity filter includes a dielectric resonator body incorporating a piece of dielectric material, the piece of dielectric material having a shape such that it can support at least two substantially degenerate resonant modes; and a phased array of coupling elements for coupling signals to the piece of dielectric material.

Abstract: A multi-mode cavity filter has a resonator body with a face and a conductive covering. The face has an uncovered area through which a signal can be coupled into or out of the body. A boundary exists between the uncovered area and the covering. A first vector drawn between two most distal points on the boundary and not crossing the covering is such that a second vector drawn between two other points on the boundary and orthogonal to the first vector has a length that is at least 70% that of the first vector. The length of the first vector is at least 20% of the length of the shortest vector that passes through a centroid of the face and extends completely across the face.

Abstract: A multi-mode cavity filter comprises: a dielectric resonator; a coupling structure for at least one of coupling input signals to the dielectric resonator and extracting filtered output signals from the dielectric resonator; a covering of conductive material around the dielectric resonator and comprising an aperture; and a printed circuit board structure having at least one ground plane layer arranged over said aperture and electrically coupled to the covering of conductive material.

Abstract: A multi-mode cavity filter, comprising: at least one dielectric resonator body incorporating a piece of dielectric material, the piece of dielectric material having a shape such that it can support at least a first resonant mode and at least a second substantially degenerate resonant mode; and a coupling structure comprising a patterned conductive layer for at least one of coupling signals to the piece of dielectric material and coupling signals from the piece of dielectric material.

Abstract: A cavity filter, including: a dielectric resonator structure comprising a piece of dielectric material having a shape such that it can support a first resonant mode and a second resonant mode which is substantially degenerate with the first resonant mode; and a coupling structure for exciting a resonant mode within the piece of dielectric material or extracting energy from a resonant mode within the piece of dielectric material; wherein the coupling structure consists of a single patch element in contact with a surface of the piece of dielectric material.

Abstract: A filter of the present invention is a filter including a substrate and a filter element mounted on the substrate, wherein the substrate is provided with a plurality of wiring layers including a filter element wiring layer which is formed with wirings and connected with the filter element, an insulating layer interposed between the plural wiring layers and a ground pattern formed in at least a part of a wiring layer under the filter element wiring layer; and the thickness of the insulating layer interposed between the filter element wiring layer and the other wiring layer is smaller than the width of the wiring formed in the filter element wiring layer, and is larger than the thickness of the other wiring layer. By such a configuration, a thin, high-suppression and high-isolation filter can be realized.

Abstract: An electromagnet structure comprises a magnetic shell having a cavity, a magnetic pole located within the cavity and having a magnetic gap for focusing a magnetic field on a magnetically tunable filter, a conductive coil located within the cavity of the magnetic shell and forming multiple turns around the magnetic pole, and a heater located within the cavity of the magnetic shell and configured to maintain the conductive coil at a substantially constant temperature when the magnetically tunable filter is tuned to different frequencies.

Abstract: Conductor pieces 102 that are periodically arrayed, a conductor plane 103 that has openings 104 periodically arrayed so as to correspond to the conductor pieces 102, and a dielectric 108 that is arranged between the conductor pieces 102 and the conductor plane 103, are included. Island electrodes 105 and planar inductance elements 106 are arranged in the openings 104 of the conductor plane 103. The island electrodes 105 and the conductor pieces 102 are connected by conductor posts 107. The island electrodes 105 and the conductor plane 103 are connected through the planar inductance elements 106.

Abstract: A microwave channel multiplexing device comprises several elementary filters connected in parallel with a common output port by way of a transverse waveguide, each filter comprising a lower end fixed to a support common to all the filters and an upper end away from the support, an external peripheral wall, at least one internal cavity defining an internal channel, a signal input connected to the internal cavity and a signal output connected to the transverse waveguide. The multiplexing device furthermore comprises a conducto-radiative device coupled mechanically and thermally to at least two filters, the conducto-radiative device comprising at least one thermally conducting plate, and linked to the external peripheral walls of each of said at least two filters, the plate being fixed at the level of the upper end of the filters. The invention applies to the field of satellite telecommunications and more particularly to signals repetition devices aboard satellites.

Abstract: A cavity filter having two series of resonance chambers symmetrically and bilaterally connected between an antenna port and two opposing signal input/output ports in a resonant space therein, each series of resonance chambers having the last resonance chamber thereof connected to the antenna port and the first resonance chamber thereof connected to the respective signal input/output port and kept in communication with the associating last resonance chamber through one respective channel and the second resonance chamber thereof kept in communication with the last second resonance chamber thereof through one respective channel to provide cross-coupling feedback, getting better stop-band flatness and improving signal quality.

Abstract: A microwave filter for filtering a microwave signal is disclosed. The microwave filter has at least one band edge at a band edge transition frequency. The filter comprises an input port and an output port. The filter also comprises a plurality of single resonators connected in parallel between the input and output ports. The filter further comprises a frequency independent electrical coupling between the input and output ports connected in parallel with the resonators. A subset of the resonators has Q values each of which are at least a factor of three higher than the Qs of each of the remaining resonators.

Abstract: A cavity filter having two series of resonance chambers bilaterally connected between an antenna port and two opposing signal input/output ports, each series of resonance chambers having the last resonance chamber thereof connected to the antenna port and the first resonance chamber thereof connected between the respective signal input/output port and the associating last resonance chamber to perform cross-coupling feedback, improving the quality of the signal received by the signal receiver using the cavity filter and enhancing signal transmission performance.

Abstract: A cavity filter includes a base member defining therein a resonant chamber, an antenna port disposed at the center of the resonant chamber, two signal input/output ports respectively disposed at two distal ends of the resonant chamber for signal input/output, a cover member covering the base member, two feedback channels disposed in the base member at two opposite lateral sides relative to the resonant chamber and respectively connected between the signal ports and the antenna port, and wave-absorbing components respectively mounted in the feedback channels for removing surge waves from feedback frequency components in the feedback channels.

Abstract: An electromagnetic bandgap structure includes: first conductive plates, placed on a first planar surface; second conductive plates, placed on a second planar surface; a first conductive trace, electrically connecting any two adjacent first conductive plates with each other on the first planar surface, in which the two adjacent first conductive plates are in a first direction; a second conductive trace, electrically connecting any two adjacent second conductive plates with each other on the second planar surface, in which the two adjacent second conductive plates are in the first direction; a first stitching via, electrically connecting any two adjacent conductive portions lined up in a direction different from the first direction on the first planar surface with each other; and a second stitching via, electrically connecting any two adjacent conductive portions lined up in a direction different from the first direction on the second planar surface with each other.

Abstract: A multi-mode filter for realizing wide-band is disclosed. The multi-mode filter includes a housing; a plurality of cavities formed in the housing; a plurality of resonators located in each of the cavities; at least one connector formed through a side wall of the housing; and at least one coupling element connected to the at least one connector in the cavities, the at least one coupling element coupling the at least one connector with at least one of the resonators respectively, wherein each of the at least one coupling element has “T” shape in view of front section and “L” shape in view of side section.

Abstract: An integrated cavity filter/antenna system includes a substrate, a cavity filter formed in or on the substrate. A first cavity resonator is in or on the substrate that is enclosed by metal walls. At least a second cavity resonator is formed in or on the substrate that is enclosed by metal walls. An inter-resonator coupling structure couples energy between the first cavity resonator and the second cavity resonator. An antenna is integrated with one of the cavity resonators so that the antenna acts as both a port of the cavity filter and as a radiating element for the filter/antenna system. A connector is coupled to one of the cavity resonators for coupling energy into the filter/antenna system.

Abstract: A multi-mode filter for realizing wide band using capacitive coupling and inductive coupling and capable of tuning coupling value is disclosed. The multi-mode filter includes a housing; a first cavity and a second cavity formed in the housing; a first resonator located in the first cavity, a second resonator located in the second cavity, a wall configured to separate the first cavity from the second cavity; and a first coupling element, wherein a groove is formed between the housing and the wall, the first coupling element is inserted in the groove in crossing direction to the wall, one part of the first coupling element is disposed in the first cavity, another part of the first coupling element is disposed in the second cavity, and the first coupling element is connected to a ground.

Abstract: A material including a conductor may be rolled to form a resonant element.

Abstract: A duplex filter includes a core of dielectric material with top, bottom, and side surfaces, and first and second spaced-apart sets of through-holes extending therethrough. A wall extends outwardly from the top surface to define a peripheral rim and cavity. A pattern of metallized and unmetallized areas are defined on selected core surfaces including strips of metallization on the top surface that extend onto the wall and the peripheral rim thereof to define respective transmit, receive, and antenna connection posts. In one embodiment, the core is made from two separate blocks which have been coupled together to define an interior metallized layer which separates the first and second sets of through-holes and an exterior wall on the top surface separates the respective transmit and receive conductive patterns thereon.

Abstract: In a high-frequency module, mounting lands arranged to mount at least one filter device having at least one set of an unbalanced terminal and two balanced terminals are provided at one side of a substrate top surface, and mounting lands arranged to mount at least one element electrically connected to the filter device are arranged at the opposite side. At least two of a plurality of connection terminals provided on a substrate bottom surface are respectively connected to conductor patterns connected to via-hole conductors penetrating the substrate within a mounting area for mounting the filter device via connection lines and are arranged at a pitch which is less than the pitch of the via-hole conductors.