Abstract: One embodiment is directed to a microwave cavity resonator comprises a cavity housing forming a cavity. A resonator element is arranged in the cavity and extends longitudinally along a longitudinal axis, wherein the resonator element comprises, when viewed along the longitudinal axis, a first end connected to a first housing wall and a second end opposite the first end, the second end being arranged at a distance from a second housing wall. The resonator element, at its second end, comprises at least one first capacitor element and the cavity housing comprises at least one second capacitor element reaching into the cavity and arranged at a distance, when viewed along a direction perpendicular to the longitudinal axis, from the at least one first capacitor element such that a gap between the at least one first capacitor element and the at least one second capacitor element is formed.

Abstract: High-data-rate interconnect cables are disclosed, wherein electrical data signals are transmitted in a conductor assembly made of a thin metal layer surrounding a cylindrical support member. The cylindrical support member can be a high-resistivity conductor or a dielectric, such as a glass optical waveguide that supports the transmission of optical signals. The cylindrical support member can also be a core conductor that supports the transmission of electrical power and low-frequency auxiliary signals. The high-data-rate interconnect cables are self-equalizing, so that a data link transmission system that employs the high-data-rate interconnect cable does not require active equalization.

Abstract: A resonator according to the invention includes an Inner conductor. The resonator has a easing comprising walls, a lid and a bottom shell within which there is a resonator cavity. The Inner conductor is in said resonator cavity. The Inner conductor is a conductive material formed with a base portion having a first end and a second end having a first end attached to a surface of the resonator cavity galvanically, in addition, the inner conductor has two or more elongate conductive materials forming resonator parts having a first end and a second end, and the resonator pasts first end is galvanically secured to the base portion at one end and the other end is galvanically separated from the resonator cavity inner surface. The characteristics of the resonator parts are selected so that each produces its own resonance width. These properties Include, for example, size, shape, orientation, material, and their different combinations.

Abstract: A structure of the present disclosure is provided with a first conductor element (11), a conductor pattern (19) facing the first conductor element (11). In the conductor pattern (19), a part opposed to the first conductor element (11) includes a line part (14) with an open end (141), an opening (13) partially surrounding the line part (14) and a second conductor element (12) surrounding the opening (13) and being continuous to the line part (14). The first conductor element (11) and the line part (14) make up a microstrip line (16).

Abstract: A resonant element is provided with a multilayer board, comprising a plurality of conductor layers isolated by a dielectric, a signal via conductor, penetrating through the multilayer board, and a plurality of ground vias, penetrating thought the multilayer board and disposed around the signal via conductor. The multilayer board comprises a first conductor layer, a second conductor layer, and a corrugated conductor layer disposed between the first and the second conductor layers. The corrugated conductor layer comprises a corrugated signal plate, connected to the signal via conductor, and a corrugated ground plate, connected to the plurality of ground vias, isolated from the corrugated signal plate by the dielectric.

Abstract: A coaxial resonator includes a dielectric block; a first inner conductor disposed in an inner surface of a first through hole which extends from a first main surface of the dielectric block to an opposite second main surface thereof, the first inner conductor being connected to a reference potential at one side thereof; and an outer conductor disposed over side surfaces of the dielectric block, the outer conductor surrounding the first inner conductor, the outer conductor being connected to the reference potential. There is a low-dielectric-constant portion in a location between the first inner conductor and the outer conductor. The low-dielectric-constant portion surrounds a periphery of the first inner conductor and is lower in dielectric constant than the dielectric block.

Abstract: The microwave signals are coupled from a transmission line embedded in a Printed Circuit Board PCB to a resonant cavity mounted on an external metalized surface of this PCB. The coupling mechanism implements an easy-to-fabricate mechanism leading to high-quality filtering owing to the fact that the end of the transmission line is provided with a metalized feeding pad located at the external layer of the PCB inside the resonant cavity. The resonant cavity is provided with a re-entrant inner stub orthogonal to the PCB and separated from the PCB by a capacitive gap. The metalized feeding pad is facing the inner stub in the area of the capacitive gap and is offset from the axial direction of this inner stub. The metalized feeding pad is further separated from the external metalized surface of the PCB by a surface capacitive gap.

Abstract: A compact resonator is provided which includes a coupling that is connected to the resonator in between a resonator body and pedestal. The coupling may be keyed or otherwise fixed to prevent it from moving. Both deep drawn and solid resonator designs are provided.

Abstract: An improved filter arrangement includes an HF inner conductor, an outer conductor arrangement inside which the HF inner conductor is arranged, and at least one stub line which branches off from the HF inner conductor at a connection point. The HF inner conductor and the at least one additionally provided stub line are arranged in a common outer conductor arrangement.

Abstract: A cavity filter has a resonator. The resonator is engaged by a rod having a mounting portion and a thermal dissipation portion. The mounting portion of the rod extends through the floor of the cavity filter to engage an internal surface of the resonator. The thermal dissipation portion dissipates heat from the resonator to the outside of the cavity filter.

Abstract: A coaxial resonator includes a first outer conductor connected to a reference potential; a dielectric block which is provided with a through hole formed so as to pass therethrough from a first side surface to a second side surface opposed to the first side surface, and is so disposed that a first main surface abuts on the first outer conductor; an inner conductor disposed in an inside of the through hole; and a second outer conductor which is shaped like a rectangular box having its one face which is opened toward the first outer conductor, the second outer conductor having an inside dimension such that the dielectric block can be housed therein so as to be spaced from its second main surface, third side surface, and fourth side surface, and being connected to the reference potential.

Abstract: A microwave generator has a resonator with two mutually spaced resonator electrodes. The resonator electrodes provide a spark gap device which breaks down upon the application of a firing voltage between them. The spark gap device has at least two parallel-connected spark gaps.

Abstract: A coaxial mirror is provided for reflecting an electromagnetic signal. The mirror includes an outer pipe, an inner pipe, and first and second rods. The outer pipe extends between input and output ports, with closed initial and final terminals disposed at their respective ports. The inner pipe extends between a closed fore end and an open aft end. The inner pipe is coaxially disposed between the initial and final terminals within the outer pipe. The first rod, coaxially disposed within the outer pipe, extends from the input port to the fore end. The second rod, coaxially disposed within the inner pipe, extends from downstream of the fore end to the output port. Preferably, the first and second pipes are cylindrical tubes. Preferably, fluoropolymer fills the annular region between the inner and outer pipes, and fluoropolymer foam fills the inner pipe.

Abstract: A coaxial resonator device includes a substrate including a chip-and-wire circuit. A resonator is coupled to the substrate using a conductive epoxy. A system includes a resonator device. The resonator device includes a housing having one or more connectors, a resonator coupled to the housing a conductive epoxy, and a chip-and-wire circuit connecting the resonator to the one or more connectors.

Abstract: Various embodiments are directed to isolation devices, systems, methods and various means, for isolating ignition causing signals and/or explosions from hazardous or explosive environments.

Abstract: A coaxial resonator includes a dielectric block; a first inner conductor disposed in an inner surface of a first through hole which extends from a first main surface of the dielectric block to an opposite second main surface thereof, the first inner conductor being connected to a reference potential at one side thereof; and an outer conductor disposed over side surfaces of the dielectric block, the outer conductor surrounding the first inner conductor, the outer conductor being connected to the reference potential. There is a low-dielectric-constant portion in a location between the first inner conductor and the outer conductor. The low-dielectric-constant portion surrounds a periphery of the first inner conductor and is lower in dielectric constant than the dielectric block.

Abstract: A resonant circuit includes a plurality of cables, each of which including: an outer conductor made of a conductive material in a cylindrical manner; an inner conductor, made of a conductive material in an elongated manner, and disposed inside of the outer conductor; and an insulator disposed between the outer conductor and the inner conductor. The plurality of cables is disposed in series in a circular manner. The inner conductor, provided in one of adjacently disposed cables among the plurality of cables, is conductively connected to the outer conductor of another of the adjacently disposed cable.

Abstract: A standing wave barrier, particularly for use in a magnetic resonance tomography device, has a body and an opening in the body that is fashioned to accommodate a cable, the opening being formed as an externally open groove along a longitudinal direction of the standing wave barrier, and is shaped so that the cable can glide in and out along the standing wave barrier through the groove.

Abstract: An adjustable resonator filter comprised of cavity resonators. There is a mov- able conductive tuning element in the filter for adjusting each electromagnetic coupling, which element is located outside the resonator cavities. When the coupling between two resonators is the case, the movement of the tuning element changes the coupling between the signal ground and a fixed coupling element which extends from a resonator cavity to the next cavity, whereupon the strength of the coupling between the resonators changes. When the coupling between a resonator and the input/output line of the filter is the case, by means of the tuning element it is implemented a section with a low impedance inside a range with a relatively high impedance on the transmission path. This section moves together with the tuning element, in which case the strength of the coupling between the resonator and the line changes.

Abstract: A ceramic monoblock filter including a direct signal path defined by at least four spaced-apart through-hole resonators in combination with ground bars extending between the through-hole resonators and a separate quadruplet cross-coupling alternate signal path defined by two conductive pads located adjacent the first and fourth ones of the through-hole resonators respectively and a separate external bridge member which interconnects and couples the two pads. The bridge member is preferably made of a material having a lower dielectric constant than the block of the filter. In one embodiment, the filter is a monoblock duplexer filter comprising respective transmit and receive sections each including at least four of the through-hole resonators, the ground bars, the two pads, and the bridge member. In the duplexer embodiment, additional through-hole resonators may define shunt zeros.

Abstract: A RF array coil system and method for magnetic resonance imaging are provided. The array coil system includes an anterior coil section having a main anterior coil section and at least one secondary anterior coil section removably attachable to the main anterior coil section. The array coil system further includes a posterior coil section having a main posterior coil section and at least one secondary posterior coil section removably attachable to the main posterior coil section.

Abstract: An improved microwave cavity filter used in cellular communication systems such as base stations is disclosed. The cavity filter has a conductive housing forming a cavity therein and a hollow conductive resonator configured in the cavity with a folded hat shaped upper portion. A tuning screw extends from the top cover of the housing into the top folded hat portion of the hollow resonator to fine tune the resonator. The resonator also may preferably include two different diameter sections providing a first high impedance section with smaller diameter and a second lower impedance section with a larger diameter configured at an upper end of the resonator. This configuration provides a significantly smaller cavity height for a given power handling capability. The resonator is preferably of constant thickness allowing low cost stamping or other forming techniques to be used in forming the resonator.

Abstract: A quarter wave coaxial cavity resonator for producing corona discharge plasma from is presented. The quarter wave coaxial cavity resonator has a folded cavity made of opposing concentric cavity members that are nested together to form a continuous cavity ending in a aperture. A center conductor with a tip is positioned in the cavity. The folded cavity advantageously permits the coaxial cavity resonator to resonate at a lower operating frequency than an unfolded quarter wave coaxial cavity resonator of the same length. Embodiments of the quarter wave coaxial cavity resonator use narrower apertures to reduce radiative losses, and include center conductors that are reactive load elements, such as helical coils. When a radio frequency (RF) oscillation is produced in the quarter wave coaxial cavity resonator, corona discharge plasma is formed at the tip of the center conductor. The corona discharge plasma can be used to ignite combustible materials in combustion chambers of combustion engines.

Abstract: The invention is related to cavity resonators, a method for producing a cavity resonator, and a band pass filter system comprising cavity resonators. A cavity resonator (100) according to the invention comprises a printed circuit-board (10); an upper electrically conductive cap (20) having a three-dimensional structure (21); and a lower electrically conductive cap (30) having a three-dimensional structure (31). The structures of the upper cap (20) and the lower cap (30) are identical and the two caps (20, 30) are mounted on opposite sides of the printed circuit-board (10).

Abstract: A re-entrant resonant cavity 12 includes three parts 18, 19 and 20 which may be manufactured as metallized plastic components. The three parts 18, 19 and 20 are soldered to a multilayer PCB 23 using surface mount technology. The re-entrant stub 16 is in two portions with dielectric material provided by the PCB 23 between them. The cylindrical wall 13 surrounding the stub 16 is also divided into two sections 21 and 22 by the PCB 23. Vias 24 and 25 electrically connect the parts separated by the PCB 23. The pattern of the vias 24 and 25 determines the inductance of the cavity, and hence its resonance frequency. This enables cavities with the same geometry to be operated at different resonance frequencies by using different configurations of through connects. One of the sets of vias may be omitted in some cavities.

Abstract: A filter device having a frame made of plated steel sheet generates a smaller insertion loss and is excellent in productivity. Resonant elements are shaped into a cylindrical form by bending the steel sheet, whose both sides are plated, before they are placed in a filter housing. A gap formed on a lateral face of each resonant element is brazed with solder, and an outer plated face of each resonant element is brazed with solder to an inner plated face of the frame.

Abstract: A TEM mode resonator (12) comprising a tuneable cavity (13) defined by an electrically conducting cavity wall (14), the cavity wall comprising a grounding face (15), a capacitor face (16) and a surrounding wall (17) extending therebetween; an electrically conducting resonator member (18) within the cavity extending from the grounding face (15) part way to the capacitor face; a tuning member (19) within the cavity between the resonator member and capacitor face adapted to be displaced towards and away from the capacitor face along a displacement axis to tune the resonator; the capacitor face (16) further comprising an electrically conducting temperature compensation plate (25), the temperature compensation plate being connected to the capacitor face at two spaced apart points (23, 24) and forming a bowed surface therebetween; the temperature compensation plate having a smaller coefficient of thermal expansivity than the capacitor face.

Abstract: A coaxial resonator includes a core of dielectric material. A through-hole defines respective openings in the top and bottom surfaces of the core. The top surface further defines at least first and second metallized regions surrounding the through-hole opening and an unmetallized region therebetween. The first metallized region defines a resonator pad. An isolated metallized region on at least one of the side surfaces defines an input/output electrode. In one embodiment, one of the metallized regions on the top surface and the electrode define interdigitated fingers on the top surface. In another embodiment, the pad defines outwardly projecting corner ears and both the second metallized region and electrode define fingers protruding between the ears. In a further embodiment, the electrode extends across at least two of the side surfaces.

Abstract: A fixation arrangement for a resonator of a cavity body includes a cavity body including a base, a resonator defining a cavity and comprising a bottom, a screw including sharply arc-shaped head and securing the resonator on the base of the cavity body, and a sticky element located between the screw head of the screw and the bottom of the resonator.

Abstract: A microwave generator has at least one resonator with two mutually opposite resonator electrodes which are separated by a spark gap. The spark gap breaks down when a high-voltage is applied. The resonator electrodes are designed in the area of the spark gap such that they result in a two-dimensional or three-dimensional section with a substantially constant, minimum electrode separation.

Abstract: The present invention is, in one aspect, a radio frequency source, comprising a gyromagnetic precession oscillator. In a second aspect, the gyromagnetic precession oscillator comprises a closed, non-magnetic, cylindrical outer conductor defining a cavity therein; an axial field solenoid wound about the outer conductor; a non-magnetic, cylindrical inner conductor disposed within the cavity and coaxially aligned with the outer conductor; a plurality of cylindrical ferrite precessors, each defining a respective bore through which the inner conductor runs; a plurality of dividers disposed within and defining a resonant chamber in the cavity; and a dielectric material filling the cavity. In a third aspect, the radio frequency source is actively tunable. In a fourth aspect, the radio frequency source that is tunable pulse-to-pulse.

Abstract: A ceramic monoblock filter including a direct signal path defined by at least four spaced-apart through-hole resonators in combination with ground bars extending between the through-hole resonators and a separate quadruplet cross-coupling alternate signal path defined by two conductive pads located adjacent the first and fourth ones of the through-hole resonators respectively and a separate external bridge member which interconnects and couples the two pads. The bridge member is preferably made of a material having a lower dielectric constant than the block of the filter. In one embodiment, the filter is a monoblock duplexer filter comprising respective transmit and receive sections each including at least four of the through-hole resonators, the ground bars, the two pads, and the bridge member. In the duplexer embodiment, additional through-hole resonators may define shunt zeros.

Abstract: A method for forming flanged end of an inner conductor of a coaxial resonator at one end of the conductive body. The flange is formed integral to the conductive body by flaring the end of the conductive body. The size and shape of the flange are selected to achieve a desired capacitance surface area for use in a resonator. A combination of expanding tool and calibration tool are used to control the size and shape of the flange that will be formed on the end of the conductive body.

Abstract: A stable and reliable built-in cross-coupled dielectric filter with temperature-independent performances and improved rectangular degree and amplitude-frequency characteristic is disclosed. The built-in cross-coupled dielectric filter comprises at least three sequentially welded coaxial dielectric resonators. Mutually coupled capacitors or mutually coupled inductors are etched on the two adjacent lateral surfaces of the adjacent coaxial dielectric resonators, respectively, with an alternate setup. The input and output ports of the built-in cross-coupled dielectric filter are positioned at the two coaxial dielectric resonators at the head and tail, respectively. The present invention is particularly applicable to the high-frequency realm such as microwave.

Abstract: A method for constructing a distributed element coaxial resonator includes folding a coaxial resonator to provide a structure having a decreased physical length compared to its electrical length. In various embodiments, the resonator is tuned to affect a standing wave when excited by a signal of a specific wavelength. The coaxial resonator includes inner, middle and outer conductor sections, wherein the characteristic impedance is maintained throughout the resonator.

Abstract: A re-entrant microwave resonant cavity comprises a stub 6. A cylindrical wall 2, first end wall 3 and the stub 6 are integrally formed. A second end wall 4 is defined by a metallization layer 8 deposited on a printed circuit board substrate 9. The parts are joined using surface mount soldering processes. The end 11 of the stub 6 defines a gap 12. A rostrum 14 faces the end of the stub 6. The rostrum 14 is manufactured separately and then fixed to the substrate 9. A dielectric sphere 16 is located between the end 11 of the probe stub 6 and the rostrum 14. The dielectric sphere 16 maintains the gap size during use and aids in correct positioning of the parts during manufacture.

Abstract: There are provided a resonator for use in a filter, which interprets and reduces intermodulation distortion by analyzing characteristics of current density occurring at resonance and linear and nonlinear characteristics of the filter, a method for manufacturing filters by using the resonator and a filter manufactured by the method. The resonator has a ratio of an inside diameter to an outside diameter belonging to a range which is larger than about 1:3 and smaller than or equal to about 1:3.75 and its length (H) is about ?/4, wherein ? is a wavelength of a plane wave provided to the resonator. By employing the method, it is possible to effectively design the filters through the use of a circuitry and structural approach with breaking from a conventional approach depending on local and minute processing steps when manufacturing the filters.

Abstract: A band stop filter comprises a transmission line with center and outer conductors, and coaxial resonators. The outer conductor forming a unitary conductive housing with an inner space divided by conductive partition walls into resonator cavities. Each of the resonator cavities contains at least one of the coaxial resonators, wherein each of the coaxial resonators separately has an electromagnetic coupling to the transmission line. The coupling arranged by a coupling element to form an attenuation peak in the a response curve of the filter, where the natural frequencies of the coaxial resonators differ from each other to shape the response curve of the filter. The transmission conductor is located inside the housing, running through openings in the partition walls across all the resonator cavities. The housing is the outer conductor of the transmission line, and a portion of the transmission conductor in a resonator cavity is the coupling element.

Abstract: A coaxial resonator includes a core of dielectric material. A through-hole defines respective openings in the top and bottom surfaces of the core. The top surface further defines at least first and second metallized regions surrounding the through-hole opening and an unmetallized region therebetween. The first metallized region defines a resonator pad. An isolated metallized region on at least one of the side surfaces defines an input/output electrode. In one embodiment, one of the metallized regions on the top surface and the electrode define interdigitated fingers on the top surface. In another embodiment, the pad defines outwardly projecting corner ears and both the second metallized region and electrode define fingers protruding between the ears. In a further embodiment, the electrode extends across at least two of the side surfaces.

Abstract: A fixed or tunable resonator. The resonator includes an inner conductor, a hollow outer conductor, and a hollow insulating layer. The hollow outer conductor forms a first inner space. The hollow insulating layer is formed from an outer soft dielectric layer, an inner soft dielectric layer, and a ceramic layer disposed between the soft dielectric layers. The hollow insulating layer includes a second inner space formed by the inner soft dielectric layer. The inner conductor is disposed within the second inner space of the hollow insulating layer, and the hollow insulating layer is disposed within the first inner space of the hollow outer conductor.

Abstract: An object is to provide an electromechanical filter which can define a vibration mode so that a vibrator can be excited only in a desired vibration mode, that is, a filter which can suppress any vibration mode other than a desired vibration mode. The electromechanical filter includes a first member for inputting a signal, a second member disposed at a predetermined distance from the first member so as to surround the first member and to be excited due to an electrostatic force caused by the signal input from the first member, and a third member disposed at a predetermined distance from the second member so as to surround the second member and to detect vibration of the second member. The second member is designed to receive an attractive force from the first member and the third member so as to be bound and regulated as to a vibration direction.

Abstract: In a semi-coaxial cavity resonator in which an inner conductor is fixed to an outer conductor with a screw, an inner cavity where the inner conductor does not engage with the screw is provided to extend from a bearing surface of the inner conductor to a region of an internal thread hole formed inside the inner conductor which does engage with the screw, thereby providing a region where the screw is deformable. Accordingly, deviation in perpendicularity of the screw relative to the bearing surface, deviation in perpendicularity of the internal thread hole of the inner conductor, and the like, may be accommodated by the deformation of the screw, and the bearing surface of the inner conductor is brought into contact with a bottom surface of an outer conductor evenly and reliably, thereby suppressing intermodulation distortion from occurring.

Abstract: A high-frequency dielectric ceramic composition that has excellent dielectric properties, such as a large ?r, a large Q-value, and a small absolute value of ?f, even in a high-frequency region, such as a microwave region or a millimeter wave region, and that can be fired at 1400° C. or less, which is much lower than before, is provided. The high-frequency dielectric ceramic composition contains 100 parts by weight of main component and 0.005-0.300 parts by weight (on a B2O3 basis) of accessory boron compound. The main component has a composition formula of (1?y)xCaTiaO1+2a?(1?y)(1?x)Ca(M1z/3M22/3)bO1+2b-yLnAlcO(3+3c)/2, wherein x and y denote moles , and x, y, z, a, b, c, and ? (wherein ?=(1?y)x) satisfy the following relationships: 0.56?x?0.8, 0.08?y?0.18, 0.980?z<1.000, ??0.65, 0.985?a?1.05, 0.9?b?1.02, and 0.9?c?1.05.

Abstract: A coaxial via structure is adapted to transmit high speed signals or high intensity current through conductive layers of an electronic device carrier. The coaxial via structure comprises a central conductive track and an external conductive track separated by a dielectric material and is positioned in a core of the electronic device carrier or in the full thickness of the electronic device. The coaxial via structure can be combined with a stacked via structure so as allow efficient transmission of high speed signals across the electronic device carrier when a manufacturing process limits the creation of a full coaxial via structure across the entire electronic device carrier.

Abstract: An interface that provides minimum changes in contact pressure over a thermal range is disclosed. The interface is a mated joint of given material, typically metallic, joined by a mechanical fastener or fasteners. The fastener(s) create contact pressure at the joint surface wherein the contact pressure variation over a temperature range is minimized by the use of a thermal compensator having a predetermined length. The thermal compensator's length is chosen by setting the thermally induced expansion delta to offset an equal delta created by the fastener and interface configuration. The difference in expansion of the mated joint and fastener is canceled by the equal, but negative, difference between compensator and fastener. This cancellation of expansion minimizes the change in contact pressure at the joint interface. Maintaining a constant pressure provides PIM reliability during temperature changes.

Abstract: A microwave filter and method for remotely tuning a microwave filter from one sub-band to another sub-band using metallic rings to adjust the capacitance or inductance of the resonator. In adjusting the capacitance, a plurality of metallic rings are disposed in the upper section or end of the resonator. Each ring has an RF switch that connects or disconnects each ring to ground, thereby varying the capacitance of the resonator. In adjusting the inductance, a plurality of metallic rings are disposed perpendicular to the magnetic field of the resonator. Each ring has an RF switch disposed within the electrical path of the ring that opens or closes the electrical path of each ring. By opening and closing each ring, the magnetic field of the resonator is altered, thereby varying the inductance of the resonator.

Abstract: One exemplary miniaturized detection coil former for NMR spectroscopy includes a macroporous carrier material having a first surface and a second surface situated opposite thereto, as well as a multiplicity of discrete pores formed in the carrier material and having a diameter in the range of 500 nm to 100 ?m being arranged in a manner distributed over at least one surface region. The pores extend through the carrier material from the first to the second surface. A radiofrequency microcoil is embedded in the macroporous carrier material. The detection coil former finds particular utility in an NMR overall analysis system for the NMR-spectroscopic analysis of chemical compounds in the liquid phase.

Abstract: Transmission line and high frequency cavity resonator using such transmission lines, particularly for Nuclear Magnetic Resonance. This transmission line comprises a straight and segmented (1) bar, these segments being (or being made) electrically conducting, the bar being provided with dielectric elements (2) inserted between the segments.

Abstract: A method of forming a dielectric resonator from an inner-conductor-formed hole that has a substantially rectangular or substantially elliptical cross section in a direction perpendicular to the depth direction thereof, by placing a rotary cutting disk in contact with the edge of the opening of the inner-conductor-formed hole, and removing portions of an outer conductor and the inner conductor in the contact portion with the rotary cutting disk, thereby separating the inner conductor and the outer conductor.

Abstract: A dielectric resonator having variable cross-section, preferably varying monotonically, and, most preferably, the resonator being in the shape of a truncated cone. Such shapes displace the H11 mode from the TE mode in the longitudinal direction of the cone. Truncating the cone to eliminate the portion of the cone where the H11 mode exists, virtually eliminates the H11 mode. A circuit comprising a plurality of these resonators may be arranged in an enclosure with each resonator longitudinally inverted relative to adjacent resonator(s) to provide a compact design with enhanced coupling and adjustability. A spiral coupling loop provides high magnetic flux in a small physical volume for coupling energy into or out of the circuit. Alternately, the resonator can coupled to a microstrip by placing the resonator upside-down near the microstrip, whereby the TE mode is immediately above the microstrip, providing enhanced coupling there between.