Abstract: A septum orthomode transducer polarizer (SPOL) is presented comprising sidewall ridges which increase bandwidth in the presence of draft angles for injection molding manufacturing techniques. A SPOL with sidewall ridges is able to accommodate draft angles for injection molding while creating greater modal separation within the SPOL and increasing the resultant bandwidth. A horn aperture may be included with the SPOL, and the combined structure may be injection molded as a single part to realize significant cost and mass reductions.

Abstract: A user equipment (UE) receives a reference signal from a base station and determines a pathloss based on the received reference signal. The UE further receive a downlink channel signal including an uplink resource assignment and a transmit power command. The UE transmits an uplink signal, wherein the uplink signal is transmitted using a transmit power level determined based on the pathloss, a format of the uplink signal, the uplink resource assignment and the transmit power command.

Abstract: A base station antenna comprises a plurality of columns of first radiating elements configured for operating in a first operational frequency band, each column of first radiating elements comprising a plurality of first radiating elements arranged in a longitudinal direction and an isolation wall positioned between adjacent columns of first radiating elements and extending in the longitudinal direction. The isolation wall comprises a frequency selective surface configured such that electromagnetic waves within the first operational frequency band are substantially blocked by the isolation wall.

Abstract: Embodiments include a sensor node, an active sensor node, and a vehicle with a communication system that includes sensor nodes. The sensor node include a package substrate, a diplexer/combiner block on the package substrate, a transceiver communicatively coupled to the diplexer/combiner block, and a first mm-wave launcher coupled to the diplexer/combiner block. The sensor node may have a sensor communicatively coupled to the transceiver, the sensor is communicatively coupled to the transceiver by an electrical cable and located on the package substrate. The sensor node may include that the sensor operates at a frequency band for communicating with an electronic control unit (ECU) communicatively coupled to the sensor node. The sensor node may have a filter communicatively coupled to the diplexer/combiner block, the transceiver communicatively coupled to the filter, the filter substantially removes frequencies from RF signals other than the frequency band of the sensor.

Abstract: A combiner/divider includes a plurality of input/output waveguides distributed in a plane and diverging in at least a partially common direction away from a central point. Each input/output waveguide extends from an outer node disposed distal of the central point to an inner port proximate to and spaced from the central point. Each input/output waveguide has a respective dimension in the plane that increases between the inner port and the outer node. An output/input waveguide has an aggregate port proximate to the central point and facing the inner ports. A transition waveguide defines an open cavity that flares outwardly in the plane from the aggregate port toward the inner ports and communicatively couples the output/input waveguide with the input/output waveguides. Opposing distal surfaces of the transition waveguide and inner port edges are spaced apart by a distance that decreases with increasing distance from the aggregate port.

Abstract: An array antenna system having an RF-port with individually controlled radiating elements.

Abstract: An electronic package and a method for fabricating the same are provided. The method includes stacking an antenna board on a circuit board, and disposing between the antenna board and the circuit board a supporting body securing the antenna board and the circuit board. As such, during a packaging process, the distance between the antenna board and the circuit board is kept unchanged due to the supporting body, thus ensuring that the antenna board operates properly and improving the product yield.

Abstract: The present technology pertains to a system and method of operation of a metamaterial phase shifter having various use applications. In one aspect of the present disclosure, a phase shifter includes a network of tunable impedance elements and a controller. The controller is coupled to the network of tunable impedance elements and configured to receive a phase shift input value and determine a corresponding tuning voltage to be supplied to each tunable impedance element of the network of tunable impedance elements based on the phase shift input value, the network of tunable impedance element being configured to shift a phase of an input signal based on tuning voltages supplied to the network of tunable impedance elements by the controller.

Abstract: A multiplexer (1) includes a plurality of filters connected to a common terminal (110). The multiplexer (1) includes: a low-frequency filter (11L) that is formed of at least one surface acoustic wave resonator arranged between the common terminal (110) and the input/output terminal (120) and has a first pass band; a high-frequency filter (12H) that is connected between the common terminal (110) and the input/output terminal (130) and has a second pass band located at a higher frequency than the first pass band; and a capacitor (CB1) that is serially arranged in a connection path between the common terminal (110) and the low-frequency filter (11L). The Q value of the capacitor (CB1) in the second pass band is higher than the Q value in the second pass band of a capacitance obtained by treating the at least one surface acoustic wave resonator of the low-frequency filter (11L) as a capacitance.

Abstract: Heat exchanger assemblies for electronic devices are disclosed. A heat exchanger assembly may include a heat transfer body that has a face that forms open passageways. A cover structure may be attached to the heat transfer body in a manner to enclose the open passageways, thereby forming a heat exchanger assembly that includes enclosed fluid conduits. In this regard, the enclosed fluid conduits may form complex and intricate patterns within the heat exchanger assembly that are tailored to the heat requirements of a particular application. Heat exchanger assemblies as described herein may be thermally coupled to a center waveguide section of a spatial power-combining device. The enclosed fluid conduits may be tailored based on locations of amplifiers within the center waveguide section to provide improved thermal operation of the spatial power-combining device.

Abstract: The present application discloses embodiments that relate to an electromagnetic apparatus. In one aspect, the present apparatus includes a circuit board configured to propagate an electromagnetic signal, a waveguide configured to propagate an electromagnetic signal, and a coupling port configured to couple the electromagnetic signal between the circuit board and the waveguide. The apparatus further includes a radiating structure disposed on the circuit board. The radiating structure includes an electric field coupling component configured to an electric field between the circuit board and the coupling port and a magnetic field coupling component configured to couple a magnetic field between the circuit board and the coupling port.

Abstract: A square waveguide (1) has four ridges (6a, 6b, 7a, 7b). The cross section of the square waveguide (1) perpendicular to a waveguide axial direction is square. Inside the square waveguide (1), two rectangular waveguide terminals (4, 5) are formed by partitioning the inside along the waveguide axial direction. A septum phase plate (2) formed to get narrower stepwisely as its gets closer to a square waveguide terminal (3) opposite to the rectangular waveguide terminals (4, 5) is provided. A projecting portion (8) is provided on a part of a ridge (7b) formed on a ridge-side wall surface opposite to a wall surface, the septum phase plate (2) being joined to the wall surface in a part where the septum phase plate has largest width, the projecting portion (8) being larger than other parts of the ridge (7b) in a cross-sectional shape perpendicular to the waveguide axial direction.

Abstract: An energy absorbing circuit includes a power divider that is configured to divide an incoming RF signal into a plurality of RF component signals; a plurality of transmission lines that are connected with the power divider, each of the transmission lines configured to transmit a respective RF component signal of the plurality of RF component signals; and a plurality of matching elements, each matching element being terminated to a respective one of the transmission lines.

Abstract: A test board is provided including a first branch line including a first portion which receives an input signal and a second portion opposite to the first portion. A plurality of second branch lines branch from the first branch line. Each of the second branch lines include a third portion connected to the second portion of the first branch line and a fourth portion connected to the third portion. A first characteristic impedance of the first portion of the first branch line is different from a second characteristic impedance of the second portion of the first branch line. A third characteristic impedance of the third portions of each of the second branch lines is different from a fourth characteristic impedance of the fourth portions of each of the second branch lines. The second characteristic impedance is equal to a combined characteristic impedance of the third portions of each of the second branch lines.

Abstract: Disclosed is an antenna device including a rectangular waveguide (1) having a first opening end (2a) and a second opening end (2b), a septum phase plate (3) disposed inside the rectangular waveguide (1) in such a way as to partition the first opening end (2a) into two parts along a first direction perpendicular to a waveguide axial direction of the rectangular waveguide (1), a width of the septum phase plate in a second direction perpendicular to both the waveguide axial direction of the rectangular waveguide (1) and the first direction becoming narrower stepwise with advancing from the first opening end (2a1, 2a2) toward the second opening end (2b), and first projecting portions (4a, 4b) disposed on two respective first inner walls (1a, 1b) parallel to the septum phase plate (3), out of four inner walls of the rectangular waveguide (1), in such a way as to project toward an inside of the rectangular waveguide (1).

Abstract: Heat exchanger assemblies for electronic devices are disclosed. A heat exchanger assembly may include a heat transfer body that has a face that forms open passageways. A cover structure may be attached to the heat transfer body in a manner to enclose the open passageways, thereby forming a heat exchanger assembly that includes enclosed fluid conduits. In this regard, the enclosed fluid conduits may form complex and intricate patterns within the heat exchanger assembly that are tailored to the heat requirements of a particular application. Heat exchanger assemblies as described herein may be thermally coupled to a center waveguide section of a spatial power-combining device. The enclosed fluid conduits may be tailored based on locations of amplifiers within the center waveguide section to provide improved thermal operation of the spatial power-combining device.

Abstract: A multiplexer (1) includes a plurality of filters connected to a common terminal (110). The multiplexer (1) includes: a low-frequency filter (11L) that is formed of at least one surface acoustic wave resonator arranged between the common terminal (110) and the input/output terminal (120) and has a first pass band; a high-frequency filter (12H) that is connected between the common terminal (110) and the input/output terminal (130) and has a second pass band located at a higher frequency than the first pass band; and a capacitor (CB1) that is serially arranged in a connection path between the common terminal (110) and the low-frequency filter (11L). The Q value of the capacitor (CB1) in the second pass band is higher than the Q value in the second pass band of a capacitance obtained by treating the at least one surface acoustic wave resonator of the low-frequency filter (11L) as a capacitance.

Abstract: A multiplexer (1) includes a plurality of filters connected to a common terminal (110). The multiplexer (1) includes: a low-frequency filter (11L) that is formed of at least one surface acoustic wave resonator arranged between the common terminal (110) and the input/output terminal (120) and has a first pass band; a high-frequency filter (12H) that is connected between the common terminal (110) and the input/output terminal (130) and has a second pass band located at a higher frequency than the first pass band; and a capacitor (CB1) that is serially arranged in a connection path between the common terminal (110) and the low-frequency filter (11L). The Q value of the capacitor (CB1) in the second pass band is higher than the Q value in the second pass band of a capacitance obtained by treating the at least one surface acoustic wave resonator of the low-frequency filter (11L) as a capacitance.

Abstract: An ultra-wideband Ortho-Mode (OMT) Transducer with ridges is provided. The ultra-wideband OMT with ridges includes a mode separation cavity, a combining cavity and a matching cavity. The mode separation cavity is configured to separate waves transmitted by a common port into at least one TE01 mode and at least one TE10 mode. The combining cavity is connected to two side ports of the mode separation cavity, is configured to combine TE01 modes transmitted by the two side ports into one and output from a standard rectangular port. The matching cavity is connected to a through port of the mode separation cavity and is configured to smoothly transit at least one TE10 mode transmitted by the through port to the standard rectangular port for output. The ultra-wideband OMT with ridges further includes a first ridge, a second ridge, a third ridge, and a fourth ridge.

Abstract: A combiner/divider includes a transition waveguide interposed between a plurality of input/output waveguides and an output/input waveguide. The input/output waveguides are preferably distributed in a radial sector extending in the E-plane of the input/output waveguides. The input/output waveguides extend from inner nodes disposed proximate to and spaced from a sector center to outer nodes disposed along an arc of the sector. At least some of the input/output waveguides taper in size from the inner nodes to the outer nodes. Walls between adjacent input/output waveguides also may taper in width between the inner nodes and the outer nodes. The output/input waveguide has an inner port facing and spaced from the inner nodes of the input/output waveguides. A transition waveguide extends between the input/output waveguides and the output/input waveguide and has side walls extending along the radii of the sector for communicatively coupling the output/input waveguide with input/output waveguides.

Abstract: A CMOS gain element is disclosed herein. Also disclosed herein are splitters, comprising the CMOS gain element, and local oscillator distribution circuitry comprising the splitters and the CMOS gain elements. Semiconductor devices comprising the local oscillator distribution circuitry may have smaller footprints and reduced power consumption relative to prior art devices.

Abstract: Spatial power-combining devices for higher frequency operation and increased bandwidth applications are disclosed. The spatial power-combining device includes a center waveguide section with a plurality of amplifier assemblies. The plurality of amplifier assemblies forms an input end and an output end, and an input inner conductor is mechanically attached to the input end, and an output inner conductor is mechanically attached to the output end. A method for joining a plurality of amplifier assemblies together to provide a center waveguide with an input end including an input connector receptacle and an output end including an output connector receptacle is also disclosed.

Abstract: According to one aspect, there is provided a wireless radio module comprising a millimeter wave wireless communication transceiver configured to output radar signals for physiological measurement, a millimeter wave antenna array connected to the millimeter wave wireless communication transceiver and configured to transmit the radar signals and to receive reflected radar signals, and a processing unit configured to analyze the received reflected radar signals to determine changes in a spectrum reflecting at least one of heart rate or respiration.

Abstract: An expanded waveguide for providing uniform electromagnetic field is disclosed. The expanded waveguide comprises an expanded area expanded in the direction of the E-plane, an input transition area and an output transition area connected to both sides of the expanded area and configured to pass an electromagnetic wave, and entrance parts formed respectively to an end part of the input transition area and an end part of the output transition area, the electromagnetic wave being inputted and outputted through the entrance parts. Here, a plurality of multilateral pillars are arranged in constant space in the transition areas, and a channel is formed along between the multilateral pillars.

Abstract: A spatial power-combining device and an antenna structure designed for high efficiency, high frequency, and ultra-wide bandwidth operation. The antenna structure may include a signal conductor and a ground conductor that are entirely separated by air. A spatial power-combining device may include a plurality of amplifier assemblies including multiple output antenna structures and an output coaxial waveguide section configured to concurrently combine signals received from each output antenna structure of the plurality of amplifier assemblies. The plurality of amplifier assemblies may also include multiple input antenna structures and an input coaxial waveguide configured to provide an input signal concurrently to each input antenna structure of the plurality of amplifier assemblies.

Abstract: A method includes receiving, through a vertical polarization port of an orthogonal-mode transducer (OMT), a vertical polarized signal from a vertical polarization diplexer, and receiving, through a horizontal polarization port of the OMT, a horizontal polarized signal from a horizontal polarization diplexer. The method also includes receiving, through a common port of the OMT, a circular polarized signal comprising the vertical and horizontal polarized signals. The common waveguide includes a septum polarizer configured to split or combine between the circular polarized signal, and the vertical polarized signal and the horizontal polarized signal.

Abstract: A first microwave backhaul assembly comprises a first antenna, a front-end circuit, an inter-backhaul-assembly interface circuit, and an interference cancellation circuit. The first antenna is operable to receive a first microwave signal. The front-end circuit is operable to convert the first microwave signal to a lower-frequency digital signal, wherein the lower-frequency digital signal has energy of a second microwave signal and energy of a third microwave signal. The inter-backhaul-assembly interface circuit is operable to receive information from a second microwave backhaul assembly. The interference cancellation circuit is operable to use the information received via the inter-backhaul-assembly interface circuit during processing of the lower-frequency digital signal to remove, from the first microwave signal, the energy of the third microwave signal. The information received via the inter-backhaul-assembly interface may comprise a signal having energy of the second microwave signal.

Abstract: A spatial power-combining device and an antenna structure designed for high efficiency, high frequency, and ultra-wide bandwidth operation. The antenna structure may include a signal conductor and a ground conductor that are entirely separated by air. A spatial power-combining device may include a plurality of amplifier assemblies including multiple output antenna structures and an output coaxial waveguide section configured to concurrently combine signals received from each output antenna structure of the plurality of amplifier assemblies. The plurality of amplifier assemblies may also include multiple input antenna structures and an input coaxial waveguide configured to provide an input signal concurrently to each input antenna structure of the plurality of amplifier assemblies.

Abstract: Spatial power-combining devices having amplifier connectors are disclosed. A spatial power-combining device structure includes a plate including a first face, a second face that opposes the first face, an exterior surface between the first face and the second face, and a plurality of amplifier connectors accessible at the exterior surface. A waveguide assembly is coupled to the plate at the first face, the waveguide assembly including an inner housing including a plurality of antenna signal conductors and an outer housing including a plurality of antenna ground conductors. A coaxial waveguide section is coupled to the waveguide assembly. The plurality of amplifier connectors may be radially arranged in the plate. A plurality of amplifier modules are on the exterior surface and coupled to corresponding ones of the plurality of amplifier connectors.

Abstract: In an example embodiment, a waveguide device comprises: a first common waveguide; a polarizer section, the polarizer section including a conductive septum dividing the first common waveguide into a first divided waveguide portion and a second waveguide divided portion; a second waveguide coupled to the first divided waveguide portion of the polarizer section; a third waveguide coupled to the second divided waveguide portion of the polarizer section; and a dielectric insert. The dielectric insert includes a first dielectric portion partially filling the polarizer section. The conductive septum and the dielectric portion convert a signal between a polarized state in the first common waveguide and a first polarization component in the second waveguide and a second polarization component in the third waveguide.

Abstract: In an example embodiment, a waveguide device comprises: a first common waveguide; a polarizer section, the polarizer section including a conductive septum dividing the first common waveguide into a first divided waveguide portion and a second waveguide divided portion; a second waveguide coupled to the first divided waveguide portion of the polarizer section; a third waveguide coupled to the second divided waveguide portion of the polarizer section; and a dielectric insert. The dielectric insert includes a first dielectric portion partially filling the polarizer section. The conductive septum and the dielectric portion convert a signal between a polarized state in the first common waveguide and a first polarization component in the second waveguide and a second polarization component in the third waveguide.

Abstract: A power combiner system for use in a single-mode waveguide includes an input waveguide, an output waveguide, at least one power amplifier module that includes a plurality of amplifiers, and at least one input dipole antenna extending into the input waveguide. Each input dipole antenna includes two input dipole antenna arms, and each input dipole antenna arm is coupled to an input of a corresponding one of the plurality of amplifiers. The system further includes at least one output dipole antenna extending into the output waveguide. Each output dipole antenna includes two output dipole antenna arms, and each output dipole antenna arm is coupled to an output of a corresponding one of the plurality of amplifiers. Each power amplifier module is disposed in a plane that runs parallel with the direction of propagation.

Abstract: A two-port triplate-line/waveguide converter in one embodiment of this invention is provided with a rectangular waveguide and two probes that connect to central conductors of separate trip late lines via slits, said slits being formed separately on two opposing inside walls of the rectangular waveguide and lying on an imaginary straight line that is perpendicular to said inside walls. The two probes, the tips of which are bent inside the rectangular waveguide, constitute monopole antennas with the aforementioned inside walls functioning as the ground planes thereof.

Abstract: Waveguide components that have a high degree of performance accuracy over the temperature range of interest are provided. The components require no post-formation trimming steps, are light-weight, and dimensionally stable. In addition, a method for the manufacture of these millimeter wave components is provided.

Abstract: A power divider/combiner includes a main conductor defining an axis and having an outer surface; an input connector, at a front end, having a center conductor, electrically coupled to the main conductor and having an axis aligned with the main conductor axis; a first hollow cylindrical conductor having an open end facing rearwardly, having an inner cylindrical surface, the main conductor being received in and spaced apart from the inner cylindrical surface, the first hollow cylindrical conductor being electrically coupled to the second conductor of the input connector; a second hollow cylindrical conductor having an open end facing forwardly, the first cylindrical conductor being received in and spaced apart from the inner cylindrical surface of the second cylindrical conductor; a third hollow cylindrical conductor having an open back end facing rearwardly, the second cylindrical conductor being received in and spaced apart from the inner cylindrical surface of the third cylindrical conductor; and a plurality

Abstract: Embodiments disclosed herein relate to wave guide couplers as well as 3-way, 6-way, and 9-way combiners. The waveguide coupler comprises: a housing having a first outer waveguide branch, a second outer waveguide branch, and an inner waveguide branch; first, second, and third input ports in communication with the first outer, second outer, and the inner waveguide branches respectively; an output port in communication with the inner waveguide branch; a first wall separating the first outer waveguide branch and the inner waveguide branch, the first wall having a first iris; a second wall separating the second outer waveguide branch and the inner waveguide branch, the second wall having a second iris; a first tapered section in the first outer waveguide branch; and a second tapered section the second outer waveguide branch. Various embodiments of the 3-way, 6-way, and 9-way combiners are implemented using the wave guide coupler.

Abstract: In an example embodiment, a waveguide device comprises: a first common waveguide; a polarizer section, the polarizer section including a conductive septum dividing the first common waveguide into a first divided waveguide portion and a second waveguide divided portion; a second waveguide coupled to the first divided waveguide portion of the polarizer section; a third waveguide coupled to the second divided waveguide portion of the polarizer section; and a dielectric insert. The dielectric insert includes a first dielectric portion partially filling the polarizer section. The conductive septum and the dielectric portion convert a signal between a polarized state in the first common waveguide and a first polarization component in the second waveguide and a second polarization component in the third waveguide.

Abstract: Aspects of the subject disclosure may include, for example, a system that performs operations including detecting a signal degradation of guided electromagnetic waves bound to a transmission medium without utilizing an electrical return path, the guided electromagnetic waves having a non-optical frequency range, and adjusting an alignment of at least a portion of fields of the guided electromagnetic waves to mitigate the signal degradation. Other embodiments are disclosed.

Abstract: A feed network for an antenna system having a waveguide is disclosed. The waveguide has broad sides facing each other and narrow sides facing each other. The feed network includes a first microstrip conductor including a first conductor loop and a second microstrip conductor including a second conductor loop. The first and second conductor loops each extend into the waveguide from one of the narrow sides and are each electrically coupled to one of the broad sides.

Abstract: A system includes an antenna array and a transceiver configured to communicate wirelessly via the antenna array. The antenna array includes a substrate having first and second ground plates. The antenna array also includes multiple substrate integrated waveguide (SIW) antenna elements located along an edge of the substrate. The antenna array further includes feed lines configured to provide signals to the antenna elements and receive signals from the antenna elements. Each antenna element includes a waveguide between the first and second ground plates and enclosed by vias through the substrate, where the waveguide has one open edge along the edge of the substrate. The system could include multiple antenna arrays, where each antenna array includes multiple SIW antenna elements and the antenna arrays are located along different edges of the substrate.

Abstract: An RF power combiner functioning as a higher-order harmonics filter comprises: at least one pair of coaxially arranged disc-shaped metal conductors, at least one of the conductors having a central axial opening to accommodate a waveguide is provided. Facing surfaces of the disk-shaped metal conductors are shaped symmetrically with respect to the plane of symmetry of the disk-shaped metal conductors to form a plurality of consecutive, radially communicating concentric cavities having isosceles trapezoids with different bases in section. The smaller base of each trapezoid disposed closer to the central axis. The number of the concentric cavities is (2 k+1), where K is the number of signal harmonics being filtered.

Abstract: A power splitter comprises at least two mutually parallel lateral waveguides with rectangular cross-section and a transverse waveguide with rectangular cross-section comprising two opposite ends respectively connected to the two lateral waveguides. The two lateral waveguides are oriented along a direction Y and mounted flat with their large side parallel to a plane XY, the transverse waveguide is oriented along a direction X perpendicular to the direction Y and mounted edgewise with its small side parallel to the plane XY, and each lateral waveguide is coupled to the transverse waveguide by a tee coupler in the E-plane with embedded junction, the two ends of the transverse waveguide being respectively embedded in each lateral waveguide, at the center of the said respective lateral waveguide.

Abstract: A power combiner has at least two uncommon ports and at least one common port. Isolation between the uncommon ports over a broad band is achieved through a lossy band response circuit having a phase and amplitude response effective to compensate for changes in phase and amplitude between the uncommon ports with change in frequency of an input signal. The lossy band response circuit may have a resistance approximating a resistance effective to isolate the uncommon ports over a bandwidth at a center frequency. A coupler may likewise increase the band for which an input port is isolated from the isolated port by coupling a lossy circuit between the input port and isolated port. The lossy circuit may be embodied as a lossy band response circuit.

Abstract: An antenna generally includes at least two feeds and at least one open side defined between the at least two feeds. A feed point is between and/or connected to the at least two feeds. The antenna also includes shorting legs for mechanical support and electrically coupling to a ground plane.

Abstract: A high bandwidth, low signal error, compact waveguide includes a conductive body including a waveguide input portion and a plurality of waveguide output portions disposed coplanar with the input waveguide portion. The waveguide further includes a common junction joining the input waveguide portion and the plurality of output waveguide portions. A septum is disposed proximate the common junction collinear with a centerline of the input waveguide portion. The waveguide further includes a plurality of iris elements disposed proximate the common junction transverse to the centerline of the input waveguide portion. The septum and the plurality of iris elements changes an impedance of the common junction to match the impedance across the entire waveguide bandwidth.

Abstract: A T-junction microwave applicator and a method for making a T-junction microwave applicator with a microwave source supplying electromagnetic energy through a junction arm to a pair of collinear arms extending in opposite directions from their junction with the junction arm. The two collinear arms form a main waveguide terminated in end walls in which entrance and exit ports are formed for a conveyor to convey material to be heated through the main waveguide for exposure to electromagnetic energy. A rectangular conductive ridge in the wall of the main waveguide opposite the junction arm extends the length of the applicator. A cylindrical tuning bar spanning the junction is positioned vertically in a plane perpendicular to the axis of the main waveguide to maximize power transfer to the material to be heated.

Abstract: This application is directed to an apparatus for creating microwave radiation patterns for an object detection system. The apparatus includes a waveguide conduit having first slots at one side of the conduit and corresponding second slots at an opposite side of the conduit. The waveguide conduit is coupled to a microwave source for transmitting microwaves from the microwave source through the plurality of first slots. A plunger is moveably positioned in the waveguide conduit from one end thereof. The plunger allows the waveguide conduit to be tuned to generally optimize the power of the microwaves exiting the first slots. Secondary plungers are each fitted in one of the second slots to independently tune or detune microwave emittance through a corresponding first slot.

Abstract: Apparatus is provided which allows for the receipt and/or transmission of data signals, and, for the received signals, for the subsequent separation of the same into at least two sets of data signals which are orthogonal and provide these sets of data signals to subsequent processing components, whilst maintaining the isolation between the first and second data signal sets. For the transmission of the data signals the first and second sets of data signals are initially separate and then combined into one data set to allow the same to be transmitted.

Abstract: A system divides a signal into first and second portions and transmits the first and second portions through different signal paths between a first port and a second port. Each of the signal paths comprises an amplifier arranged in sequence with a passive device. Phase shifters may be included in each of the signal paths to produce cancellation of intermodulation products by destructive interference.

Abstract: Example power modules are described. In one implementation, a power module includes four RF signal ports that are electromagnetically coupled to a fifth RF signal port, which is substantially perpendicular to a geometric plane containing the four RF signal ports. Each of the four RF signal ports includes a waveguide and a reactive element extending into the waveguide. A termination port is electromagnetically coupled to the four RF signal ports and is substantially perpendicular to a geometric plane containing the four RF signal ports. The termination port is substantially coaxial with the fifth RF signal port.