Abstract: A printed circuit board for a radar level measurement device with a printed circuit board substrate is provided, wherein a microwave signal is coupled via a microwave conductor into a waveguide. A connection region on a front side of the printed circuit board substrate serves to receive the waveguide. A shape of a resonator shell is generated inversely by producing an annular peripheral recess whose wall has an electromagnetically reflecting coating on a rear side of the printed circuit board substrate. The annular peripheral recess on the rear side, together with a region surrounded by the recess, forms a resonator for the injected microwave signals.

Abstract: An integrated circuit device includes first and second features, each including an end portion arranged along a common axis, and separated by a space. The end portion of the first feature includes a first indention adjacent to the space. The end portion of the second feature includes a first indention adjacent to the space, mirroring the first indention of the first feature about the space. The end portions are substantially similar in shape.

Abstract: A coaxial microstrip line conversion circuit includes: a waveguide including first and second through holes, spaced apart from each other, the second through hole having a dimension to cut off a used frequency; a coaxial connector including a central conductor including a projection projecting from an axial end of an outer conductor; and a microstrip line including a ground conductor provided on one surface of an insulating substrate, and a strip line provided on the other surface of the insulating substrate and including a projection projecting axially from the ground conductor. The outer conductor is connected to an outer wall of the waveguide. The projection of the central conductor is inserted through the first through hole into the waveguide, the ground conductor is connected to an inner wall of the second through hole, and the projection of the strip line is inserted through the second through hole into the waveguide.

Abstract: A metal member which allows a waveguide to extend inside a dielectric substrate and is adapted to hold a short-circuit metal layer at a potential same as a potential of the waveguide is made to remain along cross-sections of the two wide walls of the waveguide and is removed along cross-sections of two narrow walls of the waveguide so as to prevent an electromagnetic wave from unintendedly being radiated.

Abstract: A system is provided in which a set of modules each have a substrate on which is mounted a radio frequency (RF) transmitter and/or an RF receiver coupled to a near field communication (NFC) coupler located on the substrate. Each module has a housing that surrounds and encloses the substrate. The housing has a port region on a surface of the housing. Each module has a field confiner located between the NFC coupler and the port region on the housing configured to guide electromagnetic energy emanated from the NFC coupler through the port region to a port region of an adjacent module. A reflective surface is positioned adjacent the backside of each NFC coupler to reflect back side electromagnetic towards the port region.

Abstract: Provided is a balanced/unbalanced converter (1) that includes a first strip line (40), a second strip line (41), a third strip line (42), a fourth strip line (43), an unbalanced terminal (4), and an open terminal (7). The first strip line (40) includes a spiral first conductor (19), and the second strip line (41) includes a spiral second conductor (14). An outer circumferential end (19b) of the first conductor (19) is electrically connected to the unbalanced terminal (4), and an outer circumferential end (14a) of the second conductor (14) is electrically connected to the open terminal (7).

Abstract: A system is provided in which a set of modules each have a substrate on which is mounted a radio frequency (RF) transmitter and/or an RF receiver coupled to a near field communication (NFC) coupler located on the substrate. Each module has a housing that surrounds and encloses the substrate. The housing has a port region on a surface of the housing. Each module has a field confiner located between the NFC coupler and the port region on the housing configured to guide electromagnetic energy emanated from the NFC coupler through the port region to a port region of an adjacent module. The port region is offset laterally from the NFC coupler. The field confiner is skewed to provide a pathway between the NFC coupler and the port region.

Abstract: In described examples, an integrated waveguide transition includes a substrate with a waveguide side and an opposing waveguide termination side. A first layer of metal covers a portion of the waveguide side, a second layer of metal is separated from the first layer of metal by a first layer of dielectric, and a third layer of metal covers a portion of the waveguide termination side and is separated from the second layer of metal by a second layer of dielectric. A substrate waveguide perpendicular to a plane of the substrate extends from the waveguide side to the waveguide termination side; and a length and a width of the substrate waveguide is defined by a fence of ground-stitching vias that short the first layer of metal and the second layer of metal to a plate of the third layer of metal that forms a back short.

Abstract: A dielectric substrate for transmitting a signal with a frequency f0 includes a dielectric and a copper film pattern arranged on a first surface of the dielectric. The copper film pattern has a first dimension L in a direction parallel to a propagation direction of an electromagnetic wave that has the frequency f0 and that propagates on the first surface, and the first dimension L is given by: L = 1 ? r - 1 ? k ? ? ? 0 where ?r represents a relative permittivity of the dielectric, k represents a constant in a range of 0.15 to 0.70, and ?0 represents a free space wavelength of the signal.

Abstract: A system is provided in which a set of modules each have a substrate on which is mounted a radio frequency (RF) transmitter and/or an RF receiver coupled to a near field communication (NFC) coupler located on the substrate. Each module has a housing that surrounds and encloses the substrate. The housing has a port region on a surface of the housing. Each module has a field confiner located between the NFC coupler and the port region on the housing configured to guide electromagnetic energy emanated from the NFC coupler through the port region to a port region of an adjacent module. An artificial magnetic conductor surface is positioned adjacent the backside of each NFC coupler to reflect back side electromagnetic energy with a phase shift of approximately zero degrees.

Abstract: An antenna for transmitting a first frequency and a second frequency signals is enclosed. The antenna includes a first metallic section having a first end and a second end, a second metallic section located on a side of the first metallic section and having a first end and a second end. The second metallic section is separated from the first metallic section by a first non-conducting gap. The antenna further includes a third metallic section located on a side of the second metallic section and having a first end and a second end. The third metallic section is separated from the second metallic section by a second non-conducting gap. The first end of the first metallic section is connected to a first electronic circuit, the first end of the third metallic section is connected to a second electronic circuit, and the first end of the second metallic section is connected to a feeding port. The second end of the first metallic section is electrically attached to a first metallic plate.

Abstract: A waveguide interface comprising a support block configured to support a printed circuit board assembly. An interface is coupled to an end portion of the support block and extends from the support block. The interface includes a slot positioned to receive at least a portion of the printed circuit board assembly and one or more holes positioned to receive attachment devices to secure the interface to a waveguide component. The support block and interface are molded as a monolithic device. A method of forming the waveguide interface, a waveguide assembly including the waveguide interface, and a method of making the waveguide assembly including the waveguide interface are also disclosed.

Abstract: A waveguide launch includes a first substrate having a first electrically insulating layer having first and second faces, an internal waveguide extending through the first electrically insulating layer, the internal waveguide being defined by an electrically conductive internal waveguide side wall, and, first and second electrically conductive layers in electrical contact with the internal waveguide side wall, and an electrically conductive probe launch. The waveguide launch also includes; a second substrate having a second electrically insulating layer having third and fourth faces, a backshort recess arranged within the second electrically insulating layer, a third electrically conductive layer on the third face, and, an interconnection waveguide extending between the first and third faces.

Abstract: A radio frequency transmission arrangement comprises a ground plate having an aperture comprising a slot with an elongate cross-section and substantially parallel sides, and a first and second transmission line. The thickness of the ground plate is greater than a width of the slot. The first transmission line comprises a first elongate conductor on a first side of the ground plate and has an end terminated with a first termination stub. The second transmission line comprises a second elongate conductor on the opposite side of the ground plate and has an end terminated with a second termination stub. The first transmission line is arranged to cross the slot at a point adjacent to the first termination stub, and the second transmission line is arranged to cross the slot at a point adjacent to the second termination stub.

Abstract: A communication device is disclosed herein. In an example embodiment, a communication device includes an aperture section configured to attach to a protruding section of another communication device magnetically, and a first wireless communicator configured to wirelessly communicate with a second wireless communicator of the another communication device at a frequency associated with a millimeter-wave band, the first wireless communicator including at least one transmitting coupler, wherein the at least one transmitting coupler converts a wired signal to a radio signal.

Abstract: A marchand balun with a reduced plane size is disclosed. The marchand balun provides two coupling units each having two transmission lines coupled to each other and having a length of ?/8, where ? is a characteristic wavelength of a signal subject to the marchand balun. The marchand balun further provides an additional unit, where two coupling unit and the additional unit are connected in series to each other. The additional unit is one of a transmission line with a length of ?/16 with one open end and a capacitor with one grounded end.

Abstract: Embodiments herein describe a high-speed communication channel in a PCB that includes a dielectric waveguide coupled at respective ends to coaxial vias. The dielectric waveguide includes a core and a cladding where the material of the core has a higher dielectric constant than the material of the cladding. Thus, electromagnetic signals propagating in the core are internally reflected at the interface between the core and cladding such that the electromagnetic signals are primary contained in the core. The coaxial vias include a center conductor and an outer conductor (or shield) which extend through one or more layers of the PCB. One of the coaxial vias radiates electromagnetic signals into the dielectric waveguide at a first end of the core while the other coaxial via receives the radiated signals at a second end of the core.

Abstract: A sensor for dielectric spectroscopy of a sample is disclosed. The sensor comprises a waveguide inductively loaded with a composite dielectric section which comprises a sample holder and a discontinuity separating the sample holder from the waveguide. The electromagnetic impedance of the composite dielectric section varies gradually, at least along the propagation direction of the waveguide, and at least from the onset of the discontinuity towards the sample holder.

Abstract: A package for embedding one or more electronic components comprises a carrier structure a silicon-based carrier layer, one or more electronic components embedded in one or more cavities formed in the carrier layer, and a cover structure arranged on top of the carrier structure. The cover structure comprises a cover layer and one or more cavities formed in the cover layer. An antenna element and/or a waveguide for connection to an antenna element is formed in and/or on top of the cover layer and coupled to the one or more cavities.

Abstract: There is provided a printed circuit board structure, a dielectric substrate structure and a method of manufacturing thereof using wideband microstrip lines for reducing signal reflection, resonance and radiation for maintaining signal quality. The widths of certain portions of the wideband microstrips and underlying substrate portions are tapered gradually for achieving a reduction in a signal reflection, resonance and radiation therefore resulting in maintaining signal quality.

Abstract: A feed line in the form of a trip late line that runs from a waveguide/triplate-line converter coupled to a radio to a plurality of patch antennas in a cluster pattern. The width and length of a section of said feed line between the waveguide/triplate-line converter and the branch point nearest thereto are set such that the impedance of said section directly matches the parallel combination of the impedances of branches beyond said branch point and the loss in said section is kept to or below a predetermined upper limit.

Abstract: A directional antenna has a body made of a stack of layers of dielectric panels. A radiating plate is recessed in the top panel of the stack. A grounding plate is attached to the bottom panel of the stack. A feed wire attaches to the radiating plate to feed a signal to the radiating plate. A grounding conductor attaches to the grounding plate for ground. In at least one embodiment the internal feed wire of a coaxial connector provides the feed wire and the external chassis of the coaxial connector provides the grounding conductor.

Abstract: To allow a metal film to have a sufficient thickness around a bottom surface of a non-through hole and prevent the metal film from being peeled from a substrate surface, a method for producing a waveguide substrate includes forming a first metal film on (i) a first main surface of a substrate, at which first main surface a non-through hole opens, and on (ii) an inner wall of the non-through hole, forming resist on a first main surface side of the substrate in such a manner that the resist blocks the opening of the non-through hole, removing a first portion of the first metal film which first portion is on the first main surface, removing the resist, and forming a second metal film on the first main surface of the substrate in a state where the first metal film is present on the inner wall of the non-through hole.

Abstract: A multilayer electronic component includes a stack and a balun. The stack includes a plurality of stacked dielectric layers and conductor layers. The balun is formed using the stack. The balun includes an unbalanced transmission line and first to fourth balanced transmission lines. The unbalanced transmission line includes a first line portion and a second line portion connected in series. The first and second balanced transmission lines are configured to be electromagnetically coupled to the first line portion. The third and fourth balanced transmission lines are configured to be electromagnetically coupled to the second line portion.

Abstract: A coaxial waveguide conversion device according to the present invention includes a first member; a second member provided so as to be opposed to the first member; and a conductor plate provided so as to be sandwiched between the first member and the second member. A waveguide is formed in the first member and the second member to a depth that penetrates the first member and does not penetrate the second member. The conductor plate includes an opening having a shape corresponding to a shape of an aperture plane of the waveguide; a conductor surface portion provided around the opening; an antenna portion; a waveguide short-circuit portion connecting the antenna portion with the conductor surface portion; a coaxial wiring portion provided at one end of the antenna portion; and a coaxial line short-circuit portion connecting another end of the antenna portion with the conductor surface portion.

Abstract: A system is provided for combining multiple solid-state amplifiers using a radial combiner/divider. The system includes a coaxial input port, a coaxial output port, a first plurality of N waveguides radially disposed around a first transition, a second plurality of N waveguides radially disposed around a second transition, and a plurality of N amplifiers. A first end of each of the first plurality of waveguides is operatively connected to the coaxial input port via the first transition. A first end of each of the second plurality of waveguides is operatively connected to the coaxial output port via the second transition. A first port of each of the plurality of amplifiers is connected to a second end of one of the first plurality of waveguides and a second port of each of the plurality of amplifiers is connected to a second end of one of the second plurality of waveguides.

Abstract: A planar-transmission-line-to-waveguide adapter is provided, to reduce limitations on bandwidth expansion. The planar-transmission-line-to-waveguide adapter includes a planar transmission line structure includes at least a planar transmission line, a dielectric substrate, and a metal ground having a coupling gap. a gradient waveguide structure includes m dielectric waveguides with gradient sizes, and any dielectric waveguide is surrounded by metal via holes in a dielectric substrate, where m is a positive integer not less than 2. a1st dielectric waveguide in the m dielectric waveguides with gradient sizes is coupled with the coupling gap in the planar transmission line structure. Adjacent dielectric waveguides are connected by using a metal ground, and a radiation patch is disposed between the adjacent dielectric waveguides. A metal ground and a radiation patch are disposed on a surface on which an mth dielectric waveguide comes into contact with a standard waveguide.

Abstract: An electronic device may include a wireless circuit, and a coaxial cable device having an S-shaped balun segment coupled to the wireless circuit, and an antenna segment coupled to the S-shaped balun segment. The S-shaped balun segment may include a first inner conductor segment, and a first outer conductor segment surrounding the first inner conductor segment. The antenna segment may include a second inner conductor segment coupled to the first inner conductor segment, and a second outer conductor segment surrounding the second inner conductor segment and coupled to the first outer conductor segment, the second inner conductor segment extending from the second outer conductor segment.

Abstract: An embodiment of the present invention provides an antenna assembly and a mobile terminal. The antenna assembly includes an antenna body provided with a grounding plate and a feeding portion. The antenna body includes a radiating portion provided with an unclosed loop structure. The antenna assembly further has a metal frame. The metal frame is provided with a closed first loop portion surrounding an outer periphery of the radiating portion. An annular gap is formed between the first loop portion and the radiating portion. The antenna assembly of the present disclosure improves the product performance and makes the product appearance more aesthetic.

Abstract: A FET based double balanced mixer (DBM) that exhibits good conversion gain and IIP3 values and provides improved linearity and wide bandwidth. In one embodiment, a first balun is configured to receive a local oscillator (LO) signal and generate two balanced LO signals that are coupled to two corresponding opposing nodes of a four-node FET ring. A second balun is configured to pass an RF signal on the unbalanced side. The FET ring includes at least four FETs connected as branches of a ring, with the source of each FET connected to the drain of a next FET in the ring. Each FET is preferably fabricated as, or configured as, a low threshold voltage device having its gate connected to its drain, which causes the FET to operate as a diode, but with the unique characteristic of having close to a zero turn-on voltage.

Abstract: A balun includes: a balanced port; an unbalanced port; and a double-y junction portion between the balanced port and the unbalanced port, the double-y junction portion including: a balanced y junction portion having first and second balanced stubs; and an unbalanced y junction portion having first and second unbalanced stubs, wherein at least one of the first balanced stub, the second balanced stub, the first unbalanced stub, and the second unbalanced stub includes a switch.

Abstract: An assembly for confining electromagnetic radiation in a waveguide. The assembly comprises a waveguide, comprising walls surrounding a cavity and an aperture in the walls that opens to the cavity, and a substrate assembly disposed in the aperture. The substrate assembly comprises a substrate comprising an antenna, wherein the antenna is located within the cavity and is configured for transmission of radiation within the cavity. The substrate assembly comprises an integrated circuit (IC) electrically connected to the substrate, where the IC comprises semi-conductor components and a ground plane on one side of the IC. The ground plane is located between the IC semi-conductor components and the antenna. The ground plane is located across the aperture to reduce the area of the aperture and to reflect some of the radiation directed to the aperture back into the cavity.

Abstract: The present invention is related to an electromagnetic noise filter device and an equivalent filter circuit thereof. The filter device comprises a substrate, a transmission line and a ground plane having slotted ground structure. The transmission line is configured on the top surface of the substrate, and the grounding plane is configured on the bottom surface of the substrate. At least one pair of impedance elements are configured within the slotted ground structure. The transmission line can be electromagnetic coupled to the slotted ground structure and the impedance elements so as to form an equivalent filter circuit. Thereby, the electromagnetic noises on at least one specific frequency may be absorbed by the impedance elements of the filter device so as to avoid the electromagnetic reflection induced by the electromagnetic noise and interfering the signal transmitted on the transmission line.

Abstract: A system and method uses an active manifold for an antenna array. The manifold can be assembled by a method including providing a first set of cards including a first set of antenna elements and a corresponding number of integrated circuit based time delay units or phase shifters for the first set of antenna elements. The first set of antenna elements is associated with a row of the antenna array. The method also includes providing a second set of cards including a second set of antenna elements and a corresponding number of integrated circuit based time delay units or phase shifters for the second set of antenna elements. The second set of antenna elements is associated with a column of the antenna array.

Abstract: The invention relates to a surface mount microwave system, comprising a multilayer arrangement comprising a first conductive layer, a second conductive layer and a dielectric layer, wherein the first conductive layer is arranged on the dielectric layer, and wherein the dielectric layer is arranged on the second conductive layer, wherein the first conductive layer comprises a microwave circuit and wherein the second conductive layer forms a reference potential layer, a hollow microwave waveguide being at least partly formed in the second conductive layer, and a microwave transition structure for electromagnetically coupling the first conductive layer with the hollow microwave waveguide. According to some implementation forms, a reflector on a cover covering the multilayer arrangement may be avoided.

Abstract: The invention relates to contactless plug connectors and contactless plug connector systems for electromagnetically connecting a corresponding mating plug connector. In order to allow for an electromagnetic connection, the invention suggest providing at least one input terminal for inputting a baseband input signal; an antenna element arranged at the mating end of the contactless plug connector; and a transmitting circuit for modulating the inputted baseband input signal on a predetermined carrier frequency and for transmitting the modulated baseband input signal via the antenna element as a radio wave with the predetermined carrier frequency. In particular, the contactless plug connector and contactless plug connector system include an electromagnetic shielding element arranged to surround the transmitting circuit and the antenna element with a rim portion forming an opening at the mating end of the contactless plug connector.

Abstract: Embodiments are directed to a balun structure comprising: a monopole antenna, and a microstrip coupled to the monopole antenna and comprising a ground plane modified to include at least two arms. Embodiments are directed to a balun structure comprising: a monopole antenna, and a microstrip coupled to the monopole antenna using a stepwise tapered microstrip feed.

Abstract: Embodiments of the invention include transmission line transformers. According to one aspect, a multilayer transmission line transformer (TLT) includes a first set of two conductors forming a first clockwise spiral. The TLT includes a second set of two conductors forming a second counterclockwise spiral that is substantially coaxial with the first spiral. The first and second spirals are arranged to cause a substantial cancellation of common mode currents in the first and second sets of conductors during operation of the TLT.

Abstract: This present disclosure provides a sensing cable of parallel spiral transmission line structure for distributed sensing and measuring of rock-soil mass deformation. A circular cross-section of a silicone strip is tightly wounded by two mutually-insulated wires. The two mutually-insulated wires form the spiral cable. The two mutually-insulated wires are wrapped around and covered by a silicone shroud. They constitute a sensing cable. A termination matching impedance is connected to one end of each of the two mutually-insulated wires. A time domain reflectometry measurement instrument is connected to the other end of the two mutually-insulated wires. The present disclosure implements a distributed positioning and measurement of rock-soil mass deformation.

Abstract: An RF device includes an impedance transformation circuit having a plurality of first RF couplers. Each first RF coupler includes a first portion of a first transmission line winding disposed on at least one first printed circuit board (PCB) and is configured to be electromagnetically coupled to a first portion of a second transmission line winding disposed on at least one second printed circuit board (PCB). The RF device also includes a balun circuit includes a plurality of second RF couplers coupled to balanced port connections, each second RF coupler including a second portion of the first transmission line winding wound around the first portion of a first transmission line winding and configured to be electromagnetically coupled to a second portion of the second transmission line winding wound around the first portion of a second transmission line winding.

Abstract: An omni-directional triband antenna operates without ground radials with gain commensurate with a half wavelength vertical on each band. The triband antenna includes a dual-band twinlead J-pole providing half wavelength radiators for UHF and VHF, and an impedance transformer defining feedpoints to which a length Lc of coaxial cable is attached. The Lc lower end is the triband antenna connector port. Intermediate band radiators are first and second wire elements that collectively are a half-wavelength at the intermediate band. The first element is wound helically about the impedance transformer, with upper end floating and lower end connected to a first feedpoint. The second element is wound helically about the Lc upper portion of coaxial cable, with upper end connected to the remaining feedpoint, and lower end of the element floating. The helical windings radiate vertically and there is no cross-interference between antenna radiation in any of the three bands.

Abstract: An RF filter assembly comprising a substrate, an RF waveguide filter mounted on the substrate and a pair of alignment/mounting/RF signal transmission pins extending from respective apertures in the substrate into respective through-holes in the RF filter. In one embodiment, the RF waveguide filter is comprised of first and second blocks of dielectric material coupled together in an abutting side-by-side relationship and the pair of through-holes are defined in the first and second blocks respectively. In one embodiment, respective RF signal transmission pads defined on the respective first and second blocks of dielectric material are abutted against respective RF signal transmission pads defined on the substrate and interconnected by an RF signal transmission line in the interior of the substrate for transmitting the RF signal between the first and second blocks of dielectric material.

Abstract: To reduce electromagnetic wave transmission loss, a connecting portion is provided on the end portion of a waveguide. A connecting portion has a first half and a second half, each made of a dielectric material. An antenna formed on a printed circuit board is interposed between the first half and the second half. The connecting portion has conductive portions and. The conductive portions have a shape corresponding to the cross-section of the conductive portion of the waveguide in cross-section orthogonal to the direction in which the circuit board extends, and surround the first half and the second half.

Abstract: Electrical connector includes a connector body having a front side configured to engage a mating connector and a mounting side configured to engage an electrical component. The electrical connector also includes a conductor array including a plurality of signal conductors and a plurality of ground conductors that extend through the connector body. The plurality of signal conductors includes adjacent signal conductors and the plurality of ground conductors include first and second ground conductors that are positioned between the adjacent signal conductors. The first and second ground conductors are separated from each other by a physical gap. The electrical connector also includes first and second resonance-control elements attached to the first and second ground conductors, respectively, within the gap between grounds. The first and second resonance-control elements are spaced from each other and include at least one of an electrically-lossy or magnetically-lossy material.

Abstract: An RF circuit for wireless devices comprises a single differential power amplifier and an impedance balancing circuit for each frequency band. The impedance balancing circuit serves both to provide an appropriate impedance at the output of the amplifier as the operating mode of the device changes, and also transforms the differential output of the amplifier to a single-ended output. The impedance balancing circuit optionally comprises a BALUN circuit and a variable capacitor that is varied as the operating mode changes in order to vary the impedance at the output of the amplifier.

Abstract: A method of forming an E-plane probe includes forming a plurality of monolithically integrated circuits (MICs) on a wafer, each MIC including a monolithic microwave integrated circuit (MMIC), and an E-plane probe coupled to the MMIC, mounting the wafer on an ultra-violet (UV) tape, cutting the wafer with a laser at a first power and a first linear cutting speed along vertical streets and then along horizontal streets to form separate substrates, cutting with the laser at a second power and a second linear cutting speed a rectangle or a portion of a rectangle from the separate substrates to form narrow substrate extensions on the substrates, and repeating this step for each rectangle or portion of a rectangle to be cut to form substrate extensions, and curing the UV tape, wherein the E-plane probes are on the narrow substrate extensions.

Abstract: A transformer, a method for manufacturing the transformer and a chip are provided. The method includes: a first primary tuning capacitor and/or a first secondary tuning capacitor are/is arranged in an area enclosed by a primary coil and a secondary coil, wherein the first primary tuning capacitor includes more than one second primary tuning capacitor, and the first secondary tuning capacitor includes more than one second secondary tuning capacitor; the more than one second primary tuning capacitor are connected in parallel, and the more than one second secondary tuning capacitor are connected in parallel; and the more than one second primary tuning capacitor and the at least one wire between the more than one second primary tuning capacitor, and/or the more than one second secondary tuning capacitor and the at least one wire between the more than one second secondary tuning capacitor form a partially-shielded network or part of the partially-shielded network.

Abstract: A linear resonator of a high-frequency antenna suitable for emitting a radiofrequency energisation signal and for receiving a radiofrequency relaxation signal, the linear resonator includes a radiating element to emit af radiofrequency energisation signal and receive a radiofrequency relaxation signal. The resonator also includes: a balun circuit including a power-supply line and two coupling lines; a substrate made of a dielectric material, supporting the radiating element which contains the balun circuit; two contact points connecting the balun circuit to the radiating element, the contact points being formed by one of the ends of the coupling lines extending out of the substrate, the distance separating the two contact points being selected so as to ensure the impedance matching of the resonator; and a chip floorplan separating the coupling lines from the radiating element.

Abstract: The present invention is applied to a transmitting amplifier including one of a carrier amplifier and a peak amplifier as a first amplifier and the other as a second amplifier. A transmitting amplifier according to the present invention includes a transmission line transformer with a ¼ wavelength, dual-coaxial structure such that a center conductor, an inner conductor, and an outer conductor are formed in that order from the center toward the outside. The center conductor and the inner conductor constitute a first coaxial line, and the inner conductor and the outer conductor constitute a second coaxial line. The output of the first amplifier is connected to one end of the first and the second coaxial lines, and an output terminal is connected to the other end of the first and second coaxial lines. The other end of the first coaxial line, the output of the second amplifier, and the other end of the second coaxial line are connected.

Abstract: The present invention is drawn a transmission line transformer that uses specifically displaced beads of impedance increasing material on the coaxial transmission lines. The beads of impedance increasing material greatly reduce induced back currents on the outer surfaces of the coaxial transmission lines, which reduces losses and improves performance. The specific displacement of the beads enables the coaxial transmission lines to be compactly disposed within a heat sink.