Abstract: The present technology relates to a transmission line and transmission method that allow multi-mode transmission to be easily performed using electrical signals as a transmission target. A multi-mode waveguide is connected to a metal wire configured to transmit an electrical signal via a matching structure configured to perform impedance matching between the multi-mode waveguide and the metal wire. For example, the electrical signal can be a signal of a millimeter wave band. For example, the multi-mode waveguide, the metal wire, and the matching structure can be arranged to be aligned on a plane. The present technology can be applied to, for example, transmission for electrical signals such as millimeter waves.

Abstract: A multi-step silicon etching process has been developed to fabricate silicon-based terahertz (THz) waveguide components. This technique provides precise dimensional control across multiple etch depths with batch processing capabilities. Nonlinear and passive components such as mixers and multipliers waveguides, hybrids, OMTs and twists have been fabricated and integrated into a small silicon package. This fabrication technique enables a wafer-stacking architecture to provide ultra-compact multi-pixel receiver front-ends in the THz range.

Abstract: A communication cable includes one or more conductive elements surrounded by a dielectric sheath. The sheath member has a first dielectric constant value. A dielectric core member is placed longitudinally adjacent to and in contact with an outer surface of the sheath member. The core member has a second dielectric constant value that is higher than the first dielectric constant value. A cladding surrounds the sheath member and the dielectric core member. The cladding has a third dielectric constant value that is lower than the second dielectric constant value. A dielectric wave guide is formed by the dielectric core member surrounded by the sheath and the cladding.

Abstract: A multichannel dielectric wave guide includes a set of dielectric core members that have a length and a cross section shape that is approximately rectangular, The core members have a first dielectric constant value. A cladding surrounds the set of dielectric core members and has a second dielectric constant value that is lower than the first dielectric constant.

Abstract: A dielectric waveguide may be manufactured by forming a set of parallel channels in a planar sheet that has a lower dielectric constant value. The set of channels is then filled with a material having a higher dielectric constant value. The planar sheet is sliced into a plurality of strips that each contain one or more of the channels.

Abstract: A transducer includes a composite waveguide including a composite wire having an internal core of low electrical resistance material and an outer layer of magnetostrictive material.

Abstract: The present invention is related to a device for generating waveguide modes for use in a feed horn of a satellite antenna system, said waveguide modes comprising at least one excitation mode of higher order than the fundamental mode, said device comprising a waveguide containing a first waveguide section with at least three longitudinal slots extending in the inner side of said waveguide, characterised in that said waveguide contains a second waveguide section with at least three longitudinal slots extending in said inner side of said waveguide.

Abstract: A dielectric wave guide (DWG) has a dielectric core member having that has a first dielectric constant value. A cladding surrounding the dielectric core member has a second dielectric constant value that is lower than the first dielectric constant. A mating end of the DWG is configured in a non-planer shape for mating with a second DWG having a matching non-planar shaped mating end.

Abstract: A dielectric wave guide (DWG) has a dielectric core member that has a first dielectric constant value. A cladding surrounding the dielectric core member has a second dielectric constant value that is lower than the first dielectric constant. A mating end of the DWG is configured for mating with a second DWG having a matching non-planar shaped mating end.

Abstract: A microwave device having a narrow gap between two parallel surfaces of conducting material by using a texture or multilayer structure on one of the surfaces. The fields are mainly present inside the gap, and not in the texture or layer structure itself, so the losses are small. The microwave device further comprises one or more conducting elements, such as a metal ridge or a groove in one of the two surfaces, or a metal strip located in a multilayer structure between the two surfaces. The waves propagate along the conducting elements. At least one of the surfaces is provided with means to prohibit the waves from propagating in other directions between them than along the ridge, groove or strip. At very high frequency the gap waveguides and gap lines may be realized inside an IC package or inside the chip itself.

Abstract: The present invention relates to a tunable microwave arrangement (100) comprising a waveguide arrangement and tuning elements comprising a number of varactors for tuning an electromagnetic signal input to the waveguide arrangement. It comprises a substrate (1), a layered structure (20) comprising at least two conducting layers (2,3) and at least one dielectric layer (4) which are arranged in an alternating manner. The layered structure is arranged on the substrate (1) such that a first of said conducting layers (2) is closest to the substrate (1). It also comprises at least one surface mounted waveguide (5), a second of the conducting layers (3), most distant from the substrate, being adapted to form a wall of the surface mounted waveguide (5), which wall incorporates said tuning elements which are arranged to enable control of surface currents generated in said wall, hence loading the waveguide (5) with a tunable, controllable impedance.

Abstract: Provided is an electromagnetic wave propagation sheet constituted by a mesh-shaped conductor layer, a planar conductor layer, and an inductor layer sandwiched therebetween, wherein the mesh-shaped conductor layer and the planar conductor layer are electrically connected to each other in an end section of the electromagnetic wave propagation sheet by a short conductor, and a mesh-shaped conductor that constitutes the mesh-shaped conductor layer has a meander shape in the vicinity of the electromagnetic wave propagation sheet end section.

Abstract: A health monitoring system includes a waveguide that receives a wave transmitted from an external power source and that guides the wave to reach within a width of a rectenna. The waveguide may include a negative refractive index medium and/or a surface plasmon medium.

Abstract: Carbon nanostructures can be formed into polymer composites that are electrically conductive and highly reflective of microwave radiation, thereby facilitating transmission of the microwave radiation. Microwave transmission assemblies containing carbon nanostructures can include an elongate structure containing elongate opposing surfaces that extend the length of the elongate structure and that are spaced apart from one another with a channel region defined in between. The elongate opposing surfaces include a polymer composite containing a polymer matrix and a plurality of carbon nanostructures. Each carbon nanostructure can include a plurality of carbon nanotubes that are branched, crosslinked, and share common walls with one another.

Abstract: The invention discloses an optical communication system using grounded coplanar waveguide, comprising a current buffer and a transimpedance amplifier (TIA). Transmission lines of the optical communication system have grounded coplanar waveguide (GCPW) structures. The current buffer receives a current signal from a signal source, and outputs the current signal after reducing capacitance effects of the signal source. The TIA converts the current signal to a voltage signal, wherein a first end of the TIA receives the current signal, a second end of the TIAn outputs the voltage signal, and a shunt-shunt feedback circuit is coupled between the first end and the second end. Therefore, the present invention can minimize the circuit area and lower the power consumption as well.

Abstract: A substrate integrated waveguide (10) comprises a top conductive layer (14) and a bottom conductive layer (15) provided on either sides a substrate (11). At least one wall (12, 13) of conductive material is provided in the substrate (11) to define, together with the top and bottom layers (14, 15), the waveguide. The at least one wall (12, 13) comprise a multitude of thin conductive wires densely arranged close to each other in the substrate (11) and having respective short ends connected to the top and bottom layers (14, 15). The high number of wires per surface unit in the wall (12, 13) effectively prevent significant amount of power leakage through the wall (12, 13) during operation of the substrate integrated waveguide (10).

Abstract: A transmission line comprising a transmission medium defined by a plurality of dielectric layers, wherein the dielectric layers include a first layer having a first dielectric constant, a second layer having a second dielectric constant and a third layer having a third dielectric constant being less than the first and second dielectric constant.

Abstract: Provided is an atmospheric plasma equipment and a waveguide for the same. The atmospheric plasma equipment according to this disclosure includes: an oscillator supplying an electromagnetic wave; and a waveguide into which the electromagnetic wave generated from the oscillator is input to be propagated therethrough, wherein the waveguide includes at least one or more steps, and plasma is generated at a waveguide region including a final short portion. The atmospheric plasma equipment may simultaneously attain an effect of causing concentration of an electromagnetic wave applied through the waveguide with one or more steps and an effect of stably maintaining generated plasma.

Abstract: Dielectric coupler devices and dielectric coupling systems for communicating EHF electromagnetic signals, and their methods of use. The coupler devices include an electrically conductive body having a major surface, the electrically conductive body defining an elongate recess, and the elongate recess having a floor, where a dielectric body is disposed in the elongate recess and configured to conduct an EHF electromagnetic signal.

Abstract: A graphical technique and three phase unwrapping techniques for retrieving bulk permittivity and permeability tensors of materials, and more specifically, the new technique provides for retrieving isotropic and anisotropic material parameters.

Abstract: A waveguide structure including (i) a base that has a mounting surface, (ii) a metal plate member that has elasticity, that is stacked on the mounting surface, and that functions together with the base to constitute a waveguide, (iii) a positioning mechanism that is constituted by a positioning pin that is disposed so as to protrude from the base and an interfitting portion that is formed on the plate member, and that is fitted together with the positioning pin, the positioning mechanism positioning the plate member on the mounting surface of the base and also restricting movement along the mounting surface by fitting together of the positioning pin and the interfitting portion, and (iv) a holder that holds the plate member in a state of close contact with the mounting surface by pressing the plate member so as to generate a reaction force in the plate member.

Abstract: There is provided a waveguide connecting structure, including first, second, third and fourth waveguides. A first coupling window at one of magnetic field planes of the third waveguide couples the first and third waveguides in such a manner that the electric field planes of both are in parallel. A second coupling window formed at one of the electric field planes of the third waveguide couples the second and third waveguides in such a manner that the electric field planes of the second waveguide is in parallel with the magnetic field planes of the first waveguide. A third coupling window formed at the other one of the electric field planes couples the fourth and third waveguides in such a manner that the electric field planes of the fourth waveguide is in parallel with the magnetic field planes of the first waveguide.

Abstract: The design and use of a simplified, highly efficient, waveguide-based wireless distribution system are provided. A low-loss waveguide is used to transport wireless signals from a signal source or sources to one or more receiver locations. One or more adjustable signal coupling devices partially insert into the waveguide at predetermined locations along the length of the system to provide variable, controlled extraction of one or more wireless signals. Low-loss impedance matching circuitry is provided between the waveguide coupling devices and output connectors to maintain high system efficiency and the capability of supplying signals of high strength and quality to a large number of receivers in a wide wireless coverage area via a plurality of signal radiators. Some embodiments of the system are adaptable for wireless distribution service in HVAC plenum spaces while others disclose the combined functions of fire extinguishing and waveguide wireless distribution.

Abstract: A method of processing an electromagnetic signal, comprising includes configuring a waveguide that includes a multiferroic medium to propagate the electromagnetic signal. A mechanical strain or a control electrical or magnetic field is applied to the waveguide such that the applying changes a permittivity or a permeability of the medium. The electromagnetic signal is propagated through said waveguide while performing the applying.

Abstract: Provided is a signal transmission device including a high-frequency signal waveguide that transmits a high-frequency signal emitted from an electronic device. When the electronic device is arranged close to the high-frequency signal waveguide, the high-frequency signal is transmitted via the high-frequency signal waveguide.

Abstract: Dielectric conduits for the propagation of electromagnetic EHF signals include an elongate body of a dielectric material extending continuously along a longitudinal axis between a first terminus and a second terminus. At each point along the longitudinal axis, an orthogonal cross-section of the elongate body has a first dimension along a major axis of the cross-section, where the major axis extends along the largest dimension of the cross-section. The orthogonal cross-section also has a second dimension along a minor axis of the cross-section, where the minor axis extends along a widest dimension of the cross-section that is at a right angle to the major axis. For each cross-section of the elongate body, the first dimension is greater than the wavelength of the electromagnetic EHF signals and the second dimension is less than the wavelength of the electromagnetic EHF signals.

Abstract: Various embodiments of a millimeter-wave system operative to enhance propagation of millimeter-waves inside a laminate waveguide structure, in which electrical energy has leaked outside the laminated waveguide structure. The system comprises a laminate waveguide structure inside a printed circuit board, and an electrically conductive fence also inside the printed circuit board but outside the laminate waveguide structure. In various embodiments, the electrical energy of millimeter-waves leaks outside the laminate waveguide structure and is reflected by the electrically conducive fence back into the laminate waveguide structure.

Abstract: A microwave diffraction system includes two plates, a lattice model, a transmitter and a detector. The two plates are electrically conductive and configured in a parallel manner so as to form a planar waveguide. The lattice model includes a plurality of cylinders arranged in regular order and is placed between the two plates. The transmitter is arranged at an outside edge of the planar waveguide and configured for providing a microwave towards the lattice model. The detector is arranged at outside edge of the planar waveguide and configured for detecting the microwave reflected from the lattice model. The diffraction pattern obtained by the above-mentioned microwave diffraction system is similar to theoretical value.

Abstract: In order to guide electromagnetic waves in the terahertz range over long distances of several meters with low bending losses and large bandwidth, a device, a system and a method are provided such that electromagnetic waves in the terahertz range can be coupled into a wire having a core structure and at least one confinement structure, wherein the confinement structure extends continuously along a length of the wire.

Abstract: A dual mode vibrator is disclosed. There are available two vibrating units to enable obtainment of a variety of vibrations. Each lateral portion of the first and second vibrating units respectively supported by the first and second elastic members is supported by the first and second support bars secured at the housing for rotatable installation. Therefore, although the first and second vibrating units may rotate about the first and second support bars, the first and second vibrating units are not allowed to deviated or disengaged from the first and second support bars, whereby the plastic deformation of the first and second elastic members is prevented, and the first and second vibrating units can be positioned at predetermined positions at all times to enhance reliability of product.

Abstract: A launcher for microwave radiation comprises an elongate guide part, a surround part which surrounds a length of the guide part, at least one inwardly facing baffle provided on an inner face of the surround part and extending towards the guide part; and at least one outwardly facing baffle provided on an outer face of the guide part which is spaced axially along the guide part relative to the at least one inwardly facing baffle and faces outwards towards the inner surface of the surround part.

Abstract: An antenna feeding network, including at least one antenna feeding line, each antenna feeding line comprising a coaxial line having a central inner conductor and a surrounding outer conductor. The outer conductor (4) is made of an elongated tubular compartment (5) having an elongated opening (6) along one side of the compartment (5), and that the inner conductor (3) is suspended within the tubular compartment (5) by means of dielectric support means (7).

Abstract: A guided wave applicator comprising two electrically conductive waveguide walls and a waveguide dielectric. The volume of the waveguide dielectric is composed of non-gaseous dielectric material and is positioned between the two waveguide walls. The waveguide dielectric includes first and second longitudinal ends and includes first, second, third and fourth sides extending longitudinally between the two longitudinal ends. The first waveguide wall is positioned so that it covers the first side of the waveguide dielectric, and the second waveguide wall is positioned so that it covers the second side of the waveguide dielectric. In operation, electrical power can be supplied to one or both longitudinal ends of the waveguide dielectric, whereby the power can be coupled to a plasma through the exposed sides of the waveguide dielectric.

Abstract: A waveguide, that is improved in size, costs, manufacturing and in durability, has a base having a mounting surface, and a plate member held on the mounting surface of the base for defining a waveguide in cooperation with the base. The mounting surface of the base is a curved surface defined by a sweep of a flexure curve of the plate member when it is loaded along a straight line. The plate member is attached to the base in such a manner that the plate member is pressed against and curved along the mounting surface, and that the plate member has a curvature direction edge portion extending in a curvature direction which is a general extension of the flexure curve and a sweep direction edge portion extending in a direction of the sweep of the curve.

Abstract: A signal path for a small signal oscillating at a frequency of at least 20 GHz occurring in a magnetic resonance system has a signal source generating the small signal and a signal sink processing the small signal. The small signal is transmitted on a path from the signal source to the signal sink at least in a part section via a cable. The part section of the signal path, in which the small signal is transmitted via the cable, is embodied at least partly as a dielectric waveguide. The dielectric waveguide is disposed at least partly within an examination volume of the magnetic resonance system. The dielectric waveguide is delimited on a source side by a source-side mode converter and on a sink side, by a sink-side mode converter. The small signal is supplied to the source-side mode converter via a source-side electrical conductor and injected by the sink-side mode converter into a sink-side electrical conductor.

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

Abstract: An antenna apparatus can reduce gaps between laminated plates with a simple structure, and can be produced at low cost and in a small size, while ensuring reliability over a long period of time. The apparatus includes a base having a base transmission line portion, a laminated body that is composed of laminated plates placed on the base and has laminated body transmission line portions in communication with the base transmission line portion, and an antenna main body placed on the laminated body for emitting or receiving electromagnetic waves, wherein the base, the laminated plates and the antenna element plate are coupled with one another through surface to surface contact. The antenna main body has a curved plate formed of an arc-shaped elastic member protruding toward the base in a state before assembly, and the curved plate has an elastic force contributing to the coupling through surface to surface contact.

Abstract: Methods and apparatus are disclosed for wirelessly communicating among integrated circuits and/or functional modules within the integrated circuits. A semiconductor device fabrication operation uses a predetermined sequence of photographic and/or chemical processing steps to form one or more functional modules onto a semiconductor substrate. The functional modules are coupled to an integrated waveguide that is formed onto the semiconductor substrate and/or attached thereto to form an integrated circuit. The functional modules communicate with each other as well as to other integrated circuits using a multiple access transmission scheme via the integrated waveguide. One or more integrated circuits may be coupled to an integrated circuit carrier to form Multichip Module. The Multichip Module may be coupled to a semiconductor package to form a packaged integrated circuit.

Abstract: Methods and apparatus are disclosed for wirelessly communicating among integrated circuits and/or functional modules within the integrated circuits. A semiconductor device fabrication operation uses a predetermined sequence of photographic and/or chemical processing steps to form one or more functional modules onto a semiconductor substrate. The functional modules are coupled to an integrated waveguide that is formed onto the semiconductor substrate and/or attached thereto to form an integrated circuit. The functional modules communicate with each other as well as to other integrated circuits using a multiple access transmission scheme via the integrated waveguide. One or more integrated circuits may be coupled to an integrated circuit carrier to form Multichip Module. The Multichip Module may be coupled to a semiconductor package to form a packaged integrated circuit.

Abstract: Provided is a waveguide for guiding an electromagnetic wave between a first conductor layer and a second conductor layer each having a negative dielectric constant real part for the electromagnetic wave, the waveguide including a tapered structure in a part of the waveguide at which the electromagnetic wave exits or enters, in which a spatial profile of the tapered structure perpendicular to an optical axis extends to both sides with respect to the optical axis at least in one direction orthogonal to the optical axis as being closer to an opening plane at an outermost part of the tapered structure.

Abstract: A microwave-sending device for emitting microwaves includes electronics, a wave coupler, a waveguide, and a wave-emitting section. The electronics, the wave coupler, and the waveguide are joined by a common casting.

Abstract: A waveguide, printed circuit board and a method of fabricating a waveguide that includes: providing a ceramic powder and polymer binder slurry, and forming the waveguide from the slurry. The waveguide and a printed circuit that includes the waveguide are also described.

Abstract: Provided is an atmospheric plasma equipment and a waveguide for the same. The atmospheric plasma equipment according to this disclosure includes: an oscillator supplying an electromagnetic wave; and a waveguide into which the electromagnetic wave generated from the oscillator is input to be propagated therethrough, wherein the waveguide includes at least one or more steps, and plasma is generated at a waveguide region including a final short portion. The atmospheric plasma equipment may simultaneously attain an effect of causing concentration of an electromagnetic wave applied through the waveguide with one or more steps and an effect of stably maintaining generated plasma.

Abstract: A method of processing an electromagnetic signal, comprising includes configuring a waveguide that includes a multiferroic medium to propagate the electromagnetic signal. A mechanical strain or a control electrical or magnetic field is applied to the waveguide such that the applying changes a permittivity or a permeability of the medium. The electromagnetic signal is propagated through said waveguide while performing the applying.

Abstract: We introduce a new Periodic micro coaxial transmission line (PMTL) that is capable of sustaining a TEM propagation mode up to THz band. The PMTL can be manufactured using current photolithographic processes. This transmission line can be embedded in microscopic layers that allow many new applications. We further use the embedded PMTL to develop a modular, scaleable and fully automated Universal Test Fixture for testing chips in various stages of development mainly for digital IC chips that can be utilized in production lines with pick and place of chips on tape to test every chip before insertion into circuits. The PMTL can also provide Confined Field Interconnects between various elements on semiconductor wafers to reduce parasitic and radiation losses and practically eliminating cross talk, thus, increasing the speed of digital IC's. The PMTL is also used to develop a Universal Test Socket, and a Hand Probe.

Abstract: The present disclosure relates to a metamaterial for converging electromagnetic waves, which comprises a plurality of metamaterial sheet layers stacked integrally in an x direction. Each of the metamaterial sheet layers comprises a plurality of metamaterial units. Each of the metamaterial units has an identical substrate unit and a man-made microstructure attached on the substrate unit. The metamaterial units of each row have a same refractive index. Refractive indices of the metamaterial units of each column satisfy particular relationships. The man-made microstructure is a non-90° rotationally symmetrical structure, and an extraordinary optical axis of a refractive index ellipsoid thereof is non-perpendicular to and unparallel to the y direction. The thickness of the metamaterial can be considerably decreased while the function of converging electromagnetic waves is achieved in the present disclosure. This is favorable for making the metamaterial product miniaturized and lightweight.

Abstract: A converged network is described. The converged network includes a distributed antenna system hub coupled to the communication lines for wireless communications, horizontal cabling to carry communication lines for wired communications and wireless communications and a remote socket. The horizontal cabling is a duct that carries the wired and wireless communication lines to convey the telecommunication signals within the building. The remote socket connects the wireless communication lines with a remote electronics unit. In addition, one or more antennas can also be coupled to the remote socket to convey analog RF electrical radiation from the remote socket over adhesive backed coaxial cabling to the indoor environment.

Abstract: A metamaterial waveguide structure is disclosed. In some approaches the metamaterial waveguide structure is compressed along an optical axis using transformation optics techniques. An example is a Rotman lens that is compressed by 27 percent along the optical axis while maintaining the beam steering range, gain and side lobe amplitudes over a broad frequency range. In some approaches the metamaterial waveguide structure includes a plurality of complementary metamaterial elements patterned on a conducting surface of the waveguide.

Abstract: A method comprising polarizing and coupling an electromagnetic beam to a first-order transverse electric (TE1) mode with respect to a parallel plate waveguide (PPWG) integrated resonator comprising two plates and a cavity, sending the electromagnetic beam into the PPWG integrated resonator to excite the cavity by the TE1 mode and cause a resonance response, and obtaining wave amplitude data that comprises a resonant frequency, and obtaining the refractive index of fluids filling the cavity via the shift in resonant frequency.

Abstract: A device that includes a coplanar waveguide structure is disclosed. In an example, a device includes a coplanar waveguide structure that is oriented in a first direction, and a slot-type floating shield structure oriented proximate to the coplanar waveguide structure. The slot-type floating shield structure includes a first portion that extends transversely to the coplanar waveguide structure in a second direction and a second portion that extends from the first portion in a third direction that is perpendicular to the first direction and the second direction.