Abstract: A line bridging element for two microstrip lines, each of which are configured to conduct electromagnetic waves having a wavelength in the millimeter wavelength range, including a dielectric resonator, including a first coupling point, which is configured to couple the line-conducted electromagnetic wave, which is carried in the first microstrip line, into the dielectric resonator, including a second coupling point, which is configured to decouple the electromagnetic wave coupled into the dielectric resonator into the first microstrip line. The invention also provides a method for manufacturing a line bridging element.

Abstract: A resonance device includes a waveguide, a dielectric resonator disposed coaxial with the waveguide, an excitation structure thereof. One end of the waveguide is open and the other is short-circuited. The dielectric resonator has two end surfaces disposed on opposite sides to each other, is insulated from the waveguide in the vicinity of the open end of the waveguide, and is disposed within the waveguide, such that a thickness being a distance between the two end surfaces is constant, regardless of a radial position of the dielectric resonator. In a power transmission apparatus, the two resonance devices are provided. The open end of the waveguide of one resonance device and the open end of the waveguide of the other resonance device are disposed opposite each other. Power, which is input to an excitation structure of one resonance device, is output from an excitation structure of the other resonance device.

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 artificial dielectric resonator that can enhance a relative dielectric constant in a basic mode is provided. The artificial dielectric resonator 1 has a first series metal strip group 2 including a plurality of metal strips 20 each in a thin sheet shape arranged with microscopic gaps 20G provided in a longitudinal direction, and a second series metal strip group 3 including a plurality of metal strips 30 each in a thin sheet shape arranged with microscopic gaps 30G provided in a longitudinal direction, the first series metal strip group 2 and the second series metal strip group 3 are disposed close to each other in a thickness direction of the metal strips 20 and 30, and the metal strip 20 or 30 of one metal strip group 2 or 3 is disposed to face and cross gap 30G or 20G of the other metal strip group 3 or 2.

Abstract: A dielectric resonator in a radio frequency filter is provided, in which a dielectric resonance element is fixed at the center of a housing space formed by a cover and a housing, a guide groove is formed into a bottom of the housing, for allowing the dielectric resonance element to be inserted therein, a metal plate is interposed between the cover and the housing, and a dielectric fixing screw is engaged with the cover at a position corresponding to an upper end portion of the dielectric resonance element by screwing, for fixing the dielectric resonance element by pressing the upper end portion of the dielectric resonance element.

Abstract: A dielectric resonator filter comprising a metal wall that is configured with metal cavities. Dielectric resonators can be placed in the metal cavities and configured as a set of cylindrical TE mode resonators and a set of rectangular HE mode resonators. Separating walls are disposed between the dielectric resonators, which include tunable irises for electromagnetic mixed coupling between the cylindrical TE mode resonators and the rectangular HE mode resonators. The rectangular HE mode resonators are configured to shift up the TE mode in frequency. This leads to an easy separation of two degenerate HE modes, a wide spurious free stop band and also achieves electric coupling without using any additional coupling member.

Abstract: An object of the present invention is to provide an improved and simplified filter assembly. The object is achieved by a dielectric rod (120, 610, 620) for a filter chassis (110). The dielectric rod (120, 610, 620) extends between a first end (121) and a second end (122). The dielectric rod (120, 610, 620) comprises a conductive element (150) placed at the first (end 121). The conductive element (150) is adapted to be in conductive contact with a first contact means (141) of the filter chassis (110). The dielectric rod further comprises a second fastening element (160) placed at the second end (122). The second fastening element (160) is adapted to be attached and detached to a first fastening element (131) comprised in the filter chassis (110), such that the dielectric rod (120, 610, 620) is replaceable in the filter chassis (110).

Abstract: There is provided a dielectric ceramic composition for high-frequency use represented by a composition formula of a(Sn,Ti)O2-bMg2SiO4-cMgTi2O5-dMgSiO3. In the composition formula, a, b, c and d (provided that a, b, c and d are mol %) are within the following ranges: 4?a?37, 34?b?92, 2?c?15 and 2?d?15, respectively, and a+b+c+d=100. The dielectric ceramic composition for high-frequency use has a relative permittivity ?r of 7.5-12.0, a Qm×fo value of not less than 50000 (GHz) and an absolute value of a temperature coefficient ?f of resonance frequency fo of not more than 30 ppm/° C.

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: Provided are a resonator and a biosensor system including the same. The resonator may have a flat plate shape to increase a filling factor of a sample, thereby improving measurement sensitivity. Also, the resonator may be miniaturized, and thus the biosensor system including the resonator may also be miniaturized.

Abstract: Composite material, devices incorporating the composite material and methods of forming the composite material are provided. The composite material includes interstitial material that has at least one of a select relative permittivity property value and a select relative permeability property value. The composite material further includes inclusion material within the interstitial material. The inclusion material has at least one of a select relative permeability property value and a select relative permittivity property value. The select relative permeability and permittivity property values of the interstitial and the inclusion materials are selected so that the effective intrinsic impedance of the interstitial and the inclusion material match the intrinsic impedance of air. Devices made from the composite include metamaterial and/or metamaterial-inspired (e.g. near-field LC-type parasitic) substrates and/or lenses, front-end protection, stealth absorbers, filters and mixers.

Abstract: A resonator structure for a wireless power transfer system Includes resonators, which are to transfer wireless power, and a dielectric substance, which includes at least one exposure region formed on the dielectric substance to fix the resonators in a covered shape and to selectively expose parts of the resonators.

Abstract: A method of manufacturing a MEMS resonator formed from a first material having a first Young's modulus and a first temperature coefficient of the first Young's modulus, and a second material having a second Young's modulus and a second temperature coefficient of the second Young's modulus, a sign of the second temperature coefficient being opposite to a sign of the first temperature coefficient at least within operating conditions of the resonator. The method includes the steps of forming the resonator from the first material; applying the second material to the resonator; and controlling the quantity of the second material applied to the resonator by the geometry of the resonator.

Abstract: In a metamaterial, a dielectric layer includes a host medium and dielectric bodies disposed in rows with predetermined intervals therebetween is sandwiched between a pair of conductive mesh plates each having holes, thereby forming a functional layer including dielectric resonators corresponding to the dielectric bodies. The metamaterial is configured by laminating the functional layers. The holes and the dielectric resonators are positioned coaxially and an electromagnetic wave is propagated in each of the functional layers in a propagation direction perpendicular to a multi-layered laminate surface such that the metamaterial function as a left-handed metamaterial in relation to the propagation direction perpendicular to the multi-layered surface.

Abstract: A microwave TM mode resonator includes a resonator cavity defined by an electrically conducting cavity wall having first and second spaced apart end faces and a side wall extending therebetween. The resonator further includes a resonator body within the cavity extending along its length between the first and second end faces, wherein a portion of the length of the resonator body is a dielectric and a further portion of the length is a metal.

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: Various embodiments of the present invention are directed to metamaterial-based devices and to methods of fabricating metamaterial-based devices. In one embodiment, a metamaterial-based device comprises a channel layer, a top metallic layer, and a bottom metallic layer. The channel layer has a top and a bottom surfaces, and at least one channel configured to transmit at least one material. The top metallic layer has a top surface and a bottom surface attached to the top surface of the channel layer and has a first lattice of openings extending between the top and bottom surfaces of the top metallic layer. The bottom metallic layer has a top surface and a bottom surface, wherein the top surface of the bottom metallic layer is attached to the bottom surface of the channel layer.

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: 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: 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 leaky cavity resonator that includes a waveguide, the waveguide being filled with a dielectric material, and at least two complementary split ring resonators (CSRRs), the CSRRs residing inside the waveguide parallel to each other placed symmetrically both radially and in height, a leaky resonant cavity being formed between the at least two CSRRs and a wall of the waveguide. A frequency band of the leaky cavity resonator is adjustable by varying a distance w between at least one outside perimeter of at least one CSRR and an interior wall of the waveguide. A frequency band of the leaky cavity resonator is also adjustable by varying a size of the leaky resonant cavity. The at least two CSRRs each have at least one stub connecting to a wall of the waveguide. A frequency band of the leaky cavity resonator is also adjustable by varying a size of the stubs.

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: Since known detection devices include detectors of the same number as that of samples, the system configuration is complicated. According to the present invention, therefore, a plurality of electromagnetic-wave-transmission lines with different propagation-delay times and a coupled-transmission line coupling the electromagnetic-wave-transmission lines with each other are provided, and an electromagnetic wave is detected by the same electromagnetic-wave-detection unit. Subsequently, a detection device including at least one electromagnetic-wave detector of a number smaller than that of samples can be provided, which decreases the system complexity.

Abstract: A resonator arrangement has a conductive, semi-open outer housing, at an interior of which a conductive bar is provided disposed coaxially to the housing. At one end of the bar in a direction of a housing bottom, the bar has a die and, together with a dielectric and the housing bottom, forms a capacitor. The bar is short-circuited to the housing at another end, so that the bar and housing together form an LC oscillator circuit. Also disclosed is a method for analyzing a sample using a resonator arrangement.

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 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: A variable frequency resonator includes a series resonance circuit and a parallel resonance circuit. The series resonance circuit includes a first inductor, a first capacitor and a variable capacitance diode which are connected together in series. A reverse bias voltage is applied to the variable capacitance diode. A signal source is connected to the series resonance circuit. The parallel resonance circuit includes a second inductor and a second capacitor which are connected together in parallel. One terminal of the parallel resonance circuit is connected to a connection point between the first inductor and the first capacitor, and the other terminal of the parallel resonance circuit is connected to a connection point between the variable capacitor and the one terminal of the signal source.

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, comprising a resonator body of dielectric material capable of supporting at least two degenerate electromagnetic standing wave modes and having a face, and a conductive pattern on at least part of the face for coupling a radio frequency signal between the pattern and the resonator body.

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 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 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 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: The present invention relates to low vibration probes. Specifically, the present invention relates to low vibration probes in dielectric resonant oscillators. Accordingly, the present invention provides a dielectric resonant oscillator apparatus comprising a casing; a lid; a puck mounted on a support and one or more probes wherein the support comprises a hollow ceramic tube.

Abstract: Various exemplary embodiments relate to a temperature compensation structure for use in a dielectric resonator that permits a support to be thermally efficient in rapidly transferring heat generated by a central puck in the resonator. The temperature compensation structure may have an extension shaped to promote heat from the puck into the support, thereby permitting high power operation of the dielectric resonator without overheating.

Abstract: An optical resonator includes a master resonator configured to resonate an electromagnetic wave, one structure or a pair of structures adjacent to each other, each of which is arranged at a position that overlaps one of resonance modes of the master resonator, is made up of a material in which a real part of a permittivity assumes a negative value, and an absolute value of the real part is larger than an absolute value of an imaginary part of the permittivity, and has a size which makes scattering that the electromagnetic wave suffers be Rayleigh scattering, and one or a plurality of particles, each of which is laid out near the structure by a distance smaller than the size of the structure.

Abstract: The invention relates to a dielectric resonator rod in a transverse magnetic mode radio frequency filter comprising a first cylindrical end part (10) of a first diameter (D1) and a second cylindrical end part (20) of a second diameter (D2). The first diameter is different than the second diameter and the first cylindrical end part (10) is connected via a third intermediate part (30) to the second cylindrical end part (20). The third intermediate part (30) comprises a tapered outer circumferential surface connecting the first cylindrical end part (10) to the second cylindrical end part (20).

Abstract: To provide a resonator that includes a resonant tunneling diode that can generate an electromagnetic wave. In the resonator, the resonant tunneling diode and a resistor layer are sandwiched between first and second conductors in a direction approximately perpendicular to the in-plane direction of the resonant tunneling diode. Further, the in-plane cross-sectional area of the resistor layer is larger than that of the resonant tunneling diode. Further, the width of the in-plane cross-sectional area of the resistor layer is more than twice as large as the skin depth of an electromagnetic wave to be caused to resonate.

Abstract: Novel quadruple-mode, dual-mode, and dual-band filters as well multiplexers are presented. A cylindrical dielectric resonator sized appropriately in terms of its diameter D and length L will operate as a quadruple-mode resonator, offering significant size reduction for dielectric resonator filter applications. This is achieved by having two mode pairs of the structure resonate at the same frequency. Single-cavity, quad-mode filters and higher order 4n-pole filters are realizable using this quad-mode cylindrical resonator. The structure of the quad-mode cylinder can be simplified by cutting lengthwise along its central axis to produce a half-cut cylinder suitable for operation in either a dual-mode or a dual-band. Dual-mode, 2n-pole filters are realizable using this half-cut cylinder. Dual-band filters and diplexers are further realizable using the half-cut structure and full cylinder by carrying separate frequency bands on different resonant modes of the structure.

Abstract: A filter includes a cross-coupling link which includes a crossbar, a first vertical support attached to one end of the crossbar, a second vertical support attached to another end of the crossbar, a first coupling arm attached to the first vertical support, a second coupling arm attached to the second vertical support, a first adjustable support attached to the first coupling arm at one end and grounded at another end, and a second adjustable support attached to the second coupling arm at one end and grounded at another end.

Abstract: The invention relates to temperature compensated micro-electro-mechanical (MEMS) resonators (300) preferably made of silicon. Prior art MEMS resonators have a significant temperature coefficient of resonance frequency, whereby it is difficult to achieve a sufficiently good frequency stability. The inventive MEMS resonator has a resonance plate (310) which resonates in Lamé mode. The resonance plate is p+ doped material, such as silicon doped with boron, and the concentration of the p+ doping is such that the plate has a temperature coefficient of resonance frequency near to zero. The tensile stress and the second order temperature coefficient can further be reduced by doping the plate with germanium.

Abstract: Disclosed is a dielectric ceramic which contains, as the main component, a crystal containing La, Al, Ca and Ti and additionally contains a molybdenum oxide.

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 minima. 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: The present disclosed technique pertains to high Q mode resonators, and, more particularly, to a technique for separating a high Q mode from masking low Q modes. In a first aspect, it includes a high Q mode resonator, comprising: a housing defining a clover-shaped resonating cavity; a dielectric material filling the cavity; an input to the cavity; and an output from the cavity. In a second aspect, it includes a high Q mode resonator, comprising: a housing defining a clover-shaped resonating cavity, the cavity comprising four intersecting right angle, cylindrical chambers; a fluid dielectric material filling the cavity; an input to the cavity; and an output from the cavity. In a third aspect, it includes a method, comprising: introducing a signal to a resonating cavity; resonating the signal within a chamber, the resonating cavity shifting the resonance of the low Q mode higher in frequency than it shifts the high Q mode; and permitting egress of the signal from the resonating cavity.

Abstract: An apparatus for coupling a combline resonator and a ceramic resonator, including one or more of the following: a housing; a combline resonator in the housing; a ceramic resonator in the housing, the ceramic resonator having a stem portion and a mushroom portion; a ridge extending between the combline resonator and the ceramic resonator, the ridge passing between the mushroom portion of the ceramic resonator and the housing, wherein a coupling is obtained between an electrical field of the combline resonator and an electrical field of the ceramic resonator.

Abstract: A dielectric resonator in a radio frequency filter is provided, in which a dielectric resonance element is fixed at the center of a housing space formed by a cover and a housing, a guide groove is formed into a bottom of the housing, for allowing the dielectric resonance element to be inserted therein, a metal plate is interposed between the cover and the housing, and a dielectric fixing screw is engaged with the cover at a position corresponding to an upper end portion of the dielectric resonance element by screwing, for fixing the dielectric resonance element by pressing the upper end portion of the dielectric resonance element.

Abstract: Various exemplary embodiments relate to an improved coupler for resonant cavities and dielectric resonators. The coupler may permit accurate tuning of electromagnetic signals within desired frequency ranges. The coupler may be secured to a movable tuning device by a plurality of securing members. Each securing member may be separate, having no contact with any other securing member.

Abstract: Various exemplary embodiments relate to a temperature compensation structure for use in a dielectric resonator that permits a support to be thermally efficient in rapidly transferring heat generated by a central puck in the resonator. The temperature compensation structure may have an extension shaped to promote heat from the puck into the support, thereby permitting high power operation of the dielectric resonator without overheating.

Abstract: A dielectric resonator for a negative refractivity medium, which is coupled to a plurality of substrates, comprises at least one crystal unit, at least one first crystal cube and at least one second crystal cube. The crystal units are arrayed on the substrate. On an identical substrate, each crystal unit has a first spacing with respect to one adjacent crystal unit and a second spacing with respect to another adjacent crystal unit. The first spacing is vertical to the second spacing. Each crystal unit has one first crystal cube and one second crystal cube. A third spacing exists between the first and second crystal cubes. The first and second crystal cubes have a permittivity greater than 20. The present invention adopts the negative refractivity medium to achieve lower dielectric loss. Further, the present invention features isotropy and has low fabrication cost and high industrial utility.