Abstract: A camera assembly may include a printed circuit board (PCB), an image sensor carried by the PCB, and an electrically conductive layer carried by the PCB defining a ground plane. The camera assembly may also include a lens assembly, and a camera body that includes a dielectric layer and an electrically conductive layer thereon. The camera body may have a lens assembly opening aligned between the image sensor and the lens assembly and may also have a ground plane access opening therein aligned with the ground plane. The camera assembly may also include an electrically conductive material within the ground plane access opening coupling the electrically conductive layer to the ground plane.

Abstract: An enhanced hybrid-tee coupler (“EHT-coupler”), the EHT-coupler is described. The EHT-coupler includes a first waveguide, second waveguide, third waveguide, and fourth waveguide. The first waveguide defines a first port and the second waveguide defines a second port. Similarly, the third waveguide defines a fourth port and the fourth waveguide defines a fourth port. The first, second, third, and fourth waveguides meet in a single common junction and the first waveguide and second waveguide are collinear. The third waveguide forms an E-plane junction with both the first waveguide and the second waveguide and the fourth waveguide forms an H-plane junction with both the first waveguide and the second waveguide. The EHT-coupler also includes a first impedance matching element positioned in the common junction where the first impedance matching element includes a base and a tip.

Abstract: The various technologies presented herein relate to waveguide dividers and waveguide combiners for application in radar systems, wireless communications, etc. Waveguide dividers-combiners can be manufactured in accordance with custom dimensions, as well as in accordance with waveguide standards such that the input and output ports are of a defined dimension and have a common impedance. Various embodiments are presented which can incorporate one or more septum(s), one or more pairs of septums, an iris, an input matching region, a notch located on the input waveguide arm, waveguide arms having stepped transformer regions, etc. The various divider configurations presented herein can be utilized in high fractional bandwidth applications, e.g., a fractional bandwidth of about 30%, and RF applications in the Ka frequency band (e.g., 26.5-40 GHz).

Abstract: A power combining apparatus includes a waveguide structure and a plurality of antenna elements arranged in the waveguide structure, wherein each of the antenna elements comprises a center planar antenna layer, two outer planar antenna layers arranged on opposite sides of the center planar antenna layer, a non-conductive layer between the center planar antenna layer and one of the outer planar antenna layers, and another non-conductive layer between the center planar antenna and the other one of the outer planar antenna layers. The power combining apparatus includes a waveguide structure having an input, an output, and a plurality of antenna elements arranged in the waveguide structure, wherein each antenna element is configured to transform an electric field direction of an electromagnetic field by substantially 90 degrees rotation about a longitudinal axis of the waveguide structure, wherein a bandwidth of the antenna is less than, equal to, or greater than a decade of frequency range.

Abstract: Methods and systems are disclosed for optimizing the distribution of a broadband wireless signal in a building. The methods and systems include at least one antenna inserted into a building ventilation system and transmitting a wireless broadband signal from a transmitter in communication with the antenna. The wireless broadband signal will include multiple orthogonal subcarriers. The methods and systems further include detecting the wireless broadband signal with a receiver in the building. In selected embodiments, the methods and systems may include the steps of analyzing a parameter of the detected wireless broadband signal and optimizing the wireless broadband signal based at least in part upon the analyzed parameter.

Abstract: In one embodiment, a non-dispersive phase shifter includes a composite right- and left-handed (CRLH) circuit that can be toggled between a first phase delay state and a second phase delay state with a substantially constant phase shift over a range of frequencies.

Abstract: A cable assembly including a coaxial cable having active components mounted thereon, a housing substantially surrounding the coaxial cable, and a launch connector mounted to the outside of the housing and in connection with the coaxial cable.

Abstract: A system and method for amplifying and wave shaping a signal is presented. A system includes a Class F/Inverse Class F radio frequency (RF) power amplifier (PA). The RF PA includes an amplifier and an output matching network. The amplifier amplifies a radio wave signal to produce and an amplified signal. The output matching network wave shapes the amplified signal using a plurality of tuning stubs to generate an output signal. The tuning stubs operate at different harmonics of the amplified signal. When operating in a Class F mode the plurality of tuning stubs act as short circuits at even harmonics and the plurality of tuning stubs act as open circuits at odd harmonics. When operating in an Inverse Class F mode the plurality of tuning stubs act as open circuits and at even harmonics the plurality of tuning stubs act as short circuits at odd harmonics.

Abstract: Radio frequency (RF) power amplifiers are provided which may include high power, wideband, microwave or millimeter-wave solid state power amplifiers based on waveguide power combiner/dividers.

Abstract: A power combiner/divider having a waveguide, a plurality of amplifiers disposed on a supporting structure, a plurality of probes, each one having a first end electrically coupled to an output of a corresponding one of the plurality of amplifiers and a second end projecting outwardly from the supporting structure and into the waveguide. The probes are disposed in a common region of the waveguide. The region has a common electric field maximum within the waveguide. A first portion of the probes proximate the sidewalls have lengths different from a second portion of the probes disposed in a region distal from the sidewalls of the waveguide. The waveguide is supported by the support structure. The power combiner is a monolithic microwave integrated circuit structure.

Abstract: The present invention relates to a signal directing means for dividing or combining signals. It comprises a bottom row first port, a first row first and second port, and a bottom row signal connector. The signal directing means further comprises a first row first and second amplifier, each first row amplifier having a corresponding first and second terminal, said first terminals being connected along the bottom row signal connector. The signal directing means also comprises a first row signal connector, where said second terminals are connected along the first row signal connector. The second terminal of the first row first amplifier is connected to the first row first port and the second terminal of the first row second amplifier is connected to the first row second port. A plurality of second connector ports are also provided, with connecting impedances connecting between the respective ports.

Abstract: A power combiner/divider having a waveguide, a plurality of amplifiers disposed on a supporting structure, a plurality of probes, each one having a first end electrically coupled to an output of a corresponding one of the plurality of amplifiers and a second end projecting outwardly from the supporting structure and into the waveguide. The probes are disposed in a common region of the waveguide. The region has a common electric field maximum within the waveguide. A first portion of the probes proximate the sidewalls have lengths different from a second portion of the probes disposed in a region distal from the sidewalls of the waveguide. The waveguide is supported by the support structure. The power combiner is a monolithic microwave integrated circuit structure.

Abstract: A dielectric waveguide (DWG) has a longitudinal core member with a first dielectric constant value surrounded by a cladding with a cladding dielectric constant value that is lower than the first dielectric constant value. A first port of a signal divider is connected to receive a signal from the DWG. A second port and a third port are each configured to output a portion of the signal received on the first port, wherein the first and second port are approximately in line and the third port is at an angle to a line formed by the first port and the second port. The first port and second port have a core member with the first dielectric constant value, and the third port has a core member with a second dielectric constant value that is higher than the first dielectric constant value.

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.

Abstract: A concentric feed is provided. The concentric feed includes an outer-conductive tube electrically connected at a base of an inner-conductive tube to an outer-conductive tube by a process comprising the steps of: configuring the outer-conductive tube; configuring the inner-conductive tube; and positioning the outer-conductive tube to contact the inner-conductive tube at the base. The outer-conductive tube is configured to include: a side-port; a first-edge surface; a first-interior surface sharing an edge with and perpendicular to the first-edge surface; a second-edge surface; and a second-interior surface sharing an edge with and perpendicular to the second-edge surface. The inner-conductive tube is configured to include: the base at a base-end of the inner-conductive tube, the base including a first lip and a second lip protruding orthogonal to a first surface and a second surface, respectively, and a central-port centered on the central axis and parallel to the central axis; and a main-body.

Abstract: Multiple-way ring cavity power combiners and power dividers are disclosed. In one aspect, the disclosed ring cavity power combiners and power dividers can support a large number of devices by providing a large number of power-combining or power-dividing ports. In another aspect, the disclosed embodiments describe implementations employing a ring cavity that result in demonstrated performance characteristics suitable for UWB applications. Advantages provided include suppressing higher order modes and low losses among other advantages.

Abstract: An Ortho Mode Transducer (OMT) comprising a main guide configured with a set of ports and at both ends for communicating a band of frequencies. The ports and are placed at a predetermined distance from each other to form a taper section. Branching waveguides are disposed around the main guide for extracting polarization signals from the main guide. Coupling apertures are disposed apart along the periphery of the main guide for coupling the branching waveguides to the main guide. The coupling apertures are aligned parallel to a longitudinal axis of the main guide and extended to the taper portion of the main guide, which enhances bandwidth performance without the need for additional extraneous impedance matching elements.

Abstract: An amplification device with reduced bulk including at least one plate parallel to a plane XY and at least two amplifier modules mounted on the plate, each amplifier module including an amplifier element, an input connection waveguide, and an output connection waveguide oriented in one and the same direction X corresponding to a direction of longitudinal propagation, the amplifier element having an input and output axis oriented in a direction Y perpendicular to the direction of propagation X, wherein the input connection waveguides of the amplifier modules are distinct, have different lengths and are mounted in parallel to one another, the output connection waveguides of the amplifier modules are distinct, have different lengths and are mounted in parallel to one another, and the sum of the lengths of the input and output guides of one and the same amplifier module is identical for each amplifier module.

Abstract: A T-shaped waveguide tube with adjustability as between two outputs includes a T-shaped body, a T-shaped cover detachably mounted on the body, and a baffle. A number of pair of pillars can be mounted on a bottom board of the body. An energy entrance, a first energy output, and a second energy output are formed by the body, the cover, and the baffle. By installing the pillars in different configurations, wave energy from the energy entrance can be distributed equally or otherwise through the two outputs of the waveguide tube.

Abstract: A power divider for a Wilkinson power divider includes a dielectric layer arranged at a lower part of the Wilkinson power divider and composed of at least one composite material: and a first composite right/left handed (CRLH) transmission line connected in series between the transformer line and the first output line. Further, the power divider for the Wilkinson power divider includes a second CRLH transmission line connected in series between the transformer line and the second output line.

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 transmission system transmits a signal from a transmission terminal to a reception terminal via a pair of transmission lines. The transmission terminal side of the transmission lines is connected to a first resistor having a predetermined resistance value depending on the characteristic impedance of the transmission lines.

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: There is provided a power combiner configured to combine high-frequency powers such that the high-frequency powers respectively input to a plurality of input terminals are output from one output terminal via transmission circuits respectively connected to the input terminals. The respective input terminals are connected to one ends of resistances in parallel with the respective transmission circuits and the other ends of the resistances are connected to each other, so that the input terminals are connected to each other through the resistances connected to the respective input terminals. Each of the transmission circuits is comprised of a circuit in which a first inductor, a transmission section having a constant characteristic impedance and a second inductor are connected to each other in series.

Abstract: An N-way radio frequency (RF) divider/combiner is formed as a combination including an input port electrically coupled to a first 2-way divider/combiner and a second 2-way divider/combiner. An antenna may be coupled to at least one port of the N-way divider. The antenna may be formed as a compound printed loop (CPL) antenna. The N-way RF divider/combiner may be configured to provide N inputs and M output ports, wherein N and M are integers and any of the M output ports and N input ports can be connected to any combinations of devices. Such devices may include, e.g., an antenna including but not limited to a CPL antenna, RF receive port, transmit port, amplifier, RF switch, low noise amplifier (LNA), oscillator, tuning circuit, matching circuit, lumped element circuit, active circuit, diode, adjustable inductive circuit, and adjustable capacitive circuit.

Abstract: A reconfigurable Wilkinson power divider, methods of manufacture and design structures are provided. The structure includes a first port, and a first arm and a second arm connected to the first port. The first arm and the second arm each include one or more tunable t-line circuits. The structure also includes a second port and a third port connected to the first port via the first arm and second arm, respectively.

Abstract: A plurality of power amplifiers are integrated into a semiconductor substrate and coupled to a corresponding first plurality of antennas on an adjacent first microwave substrate. A second microwave substrate carries a second plurality of antennas coupled to a combining network. The second microwave substrate is separated from the first microwave substrate to allow a free space combination of RF energy propagated by the first plurality of antennas.

Abstract: A circuit topology to reduce ringing and the strength of unwanted signals includes a signal transmitting terminal, a first signal receiving terminal, and a second signal receiving terminal The signal transmitting terminal receives a first DC voltage via a first node and a first resistor. The first node is electrically connected to a second node via a third resistor and an energy consuming element. The energy consuming element weakens the voltage level of noise signals on the second signal receiving terminal, therefore, signal reflections from the second signal receiving terminal are reduced, and signal integrity at the first signal receiving terminal is improved.

Abstract: In general, in accordance with an exemplary aspect of the present invention, an electrical system configured to use power combining of microwave signals, such as those from monolithic microwave integrated circuits or MMICs is provided. In one exemplary embodiment, the system of the present invention further comprises a low loss interface that the circuits are directly connected to. In another exemplary embodiment, the circuits are connected to a pin which is connected to the low loss interface. In yet another exemplary embodiment of the present invention, a multi-layer power amplifier is provided that comprises two or more chassis and circuits attached to impedance matching interfaces according to the present invention. This multi-layered power amplifier is configured to amplify an energy signal and have a significantly reduced volume compared to existing power combiners.

Abstract: A power combining apparatus includes a waveguide structure and a plurality of antenna elements arranged in the waveguide structure, wherein each of the antenna elements comprises a center planar antenna layer, two outer planar antenna layers arranged on opposite sides of the center planar antenna layer, a non-conductive layer between the center planar antenna layer and one of the outer planar antenna layers, and another non-conductive layer between the center planar antenna and the other one of the outer planar antenna layers. The power combining apparatus includes a waveguide structure having an input, an output, and a plurality of antenna elements arranged in the waveguide structure, wherein each antenna element is configured to transform an electric field direction of an electromagnetic field by substantially 90 degrees rotation about a longitudinal axis of the waveguide structure, wherein a bandwidth of the antenna is less than, equal to, or greater than a decade of frequency range.

Abstract: A power combining apparatus includes an output waveguide section having inner and outer coaxial conductors, wherein an outer surface of the inner conductor and an inner surface of the outer conductor each includes a substantially linear taper, a center waveguide section having an input, an output, and a plurality of antenna elements, the output of the center waveguide section being coupled to the output waveguide section, and an output waveguide section coupled to the output of the center waveguide section.

Abstract: A compact power divider/combiner with flexible port spacing is disclosed. In an exemplary embodiment, an apparatus includes a three port circuit having first, second, and third ports, and a matching circuit configured to couple the second and third ports to ground. The matching circuit includes a first transmission line connected between a first port and a second port, a second transmission line connected between the first port and a third port, a first matching circuit connected between the second port and a first node, a second matching circuit connected between the first node and the third port, and a third matching circuit connected between the first node and a ground.

Abstract: The power combiner/distributor for performing one of power combination and power division, includes: a first branch circuit (117) having a plurality of first branch side terminals (113, 114) connected in parallel and one first combination side terminal (115), which are connected through a first power combination point (116); and a second branch circuit (137) having a plurality of second branch side terminals (133, 134) connected in parallel and one second combination side terminal (135) connected through a second power combination point (136), the one first combination side terminal and the one of plurality of second branch side terminals being connected to each other, in which a length from the first power combination point to the second power combination point is an integral multiple of ½ wavelength.

Abstract: Provided is a waveguide-microstrip line converter, including: a waveguide; a dielectric substrate that is connected to cover one end of the waveguide; a strip conductor that is disposed on a front surface of the dielectric substrate; a conductor plate that is disposed the front surface of the dielectric substrate, and connected to the strip conductor; a ground conductor that is disposed on a rear surface of the dielectric substrate; and a plurality of connection conductors that connect a periphery of the conductor plate and the ground conductor, in which: the ground conductor has an opening formed therein in a connection region; the strip conductor and the ground conductor form a microstrip line; and the plurality of connection conductors are arranged so that a distance between two lines of the plurality of connection conductors that are aligned in a longitudinal direction of the microstrip line, and disposed on both opposing sides of the conductor plate in a vicinity of a connection portion is narrower than

Abstract: A compact microstrip to waveguide dual coupler transition includes a multilayer printed circuit board configured with a rectangular region on an upper surface of the multilayer printed circuit board, wherein the rectangular region has a pair of long edges and a pair of short edges; a transition probe configured on the upper surface of the multilayer printed circuit board, wherein a terminal of the transition probe extends into the rectangular region through a long edge of the rectangular region, and another terminal of the transition probe is electrically connected to a power amplifier; a first coupler probe configured on the upper surface of the multilayer printed circuit board, wherein a terminal of the first coupler probe extends into the rectangular region; and a second coupler probe configured on the upper surface of the multilayer printed circuit board, wherein a terminal of the second coupler probe extends into the rectangular region.

Abstract: An exemplary communication device includes a combiner having a first transmission line configured to be coupled with a first communication component. A second transmission line is configured to be coupled with a second communication component. A third transmission line is coupled with the first and second transmission lines. An isolation module is coupled with the first and second transmission lines. The isolation module has a resistance, a capacitance and an inductance configured to isolate the first communication component from the second communication component if one of the components is inoperative. The isolation module components are also configured to provide RF matching for the first and second transmission lines if one of the components is inoperative.

Abstract: An apparatus and method for outputting high-frequency, high-power signals from low-frequency, low-power input is disclosed. The apparatus and method may provide a two-dimensional nonlinear lattice having a plurality of inductors and voltage-dependent capacitors intersecting at a plurality of nodes. Two or more adjacent boundaries of the nonlinear lattice may be provided with input signals which constructively interfere to output a signal of substantially higher amplitude and higher frequency than those of the input signals.

Abstract: An antenna assembly for receiving the GPS signals in a global positioning system (GPS) receiver module automatically orients the antenna to better receive the GPS signals. The antenna is oriented by a positioner (e.g., a counterweight) that automatically rotates a frame on which the antenna is mounted. The GPS receiver module may also include multiple antennas oriented in different directions to maintain good reception of the GPS signals in any position. The multiple antennas are oriented in a manner so that the poor reception range an antenna is covered by other antennas. Signals from multiple antennas may be combined or chosen for processing by a GPS processor. Also, multiple GPS receiver modules may be deployed in close proximity so that wireless communication between the GPS receiver modules may be established.

Abstract: A combiner/divider circuit may include a plurality of planar transmission lines that each may have a planar signal conductor and at least a planar signal-return conductor. Ends of different ones of the signal conductors of the plurality of transmission lines may interconnect with the signal conductor of a first transmission line may be connected to the signal conductors of second and third transmission lines. Signal-return conductors of the first, fourth, and fifth transmission lines may be connected along their lengths. Vias may connect signal-return conductors of the second and third transmission lines with respective signal conductors of the fourth and fifth transmission lines. The positions of the fourth and fifth striplines relative to the first strip line may reverse in a transition region spaced from the connection region.

Abstract: Disclosed is a structure for precision control of electrical impedance of signal transmission circuit board. A substrate forms thereon a plurality of first signal transmission lines, and a first covering insulation layer is formed on a first surface of the substrate to cover a surface of each first signal transmission lines and each spacing section formed between adjacent first signal transmission lines. Each first signal transmission lines can transmit a differential mode signal or a common mode signal.

Abstract: A combiner/divider circuit may include a plurality of planar transmission lines that each may have a planar signal conductor and at least a planar signal-return conductor. Ends of different ones of the signal conductors of the plurality of transmission lines may interconnect with the signal conductor of a first transmission line may be connected to the signal conductors of second and third transmission lines. Signal-return conductors of the first, fourth, and fifth transmission lines may be connected along their lengths. Vias may connect signal-return conductors of the second and third transmission lines with respective signal conductors of the fourth and fifth transmission lines. The positions of the fourth and fifth striplines relative to the first strip line may reverse in a transition region spaced from the connection region.

Abstract: A broadband building block portion is provided, which may be used to construct N-way multi-port combiners. The building block portion comprises a first feeding probe that receives a first input signal, a second feeding probe that receives a second input signal, a combining probe that combines the first and second input signals to output a combined signal, and a transmission line coupled to the first and second feeding probes.

Abstract: In general, in accordance with an exemplary aspect of the present invention, an electrical system configured to use power combining of microwave signals, such as those from monolithic microwave integrated circuits or MMICs is provided. In one exemplary embodiment, the system of the present invention further comprises a low loss interface that the circuits are directly connected to. In another exemplary embodiment, the circuits are connected to a pin which is connected to the low loss interface. In yet another exemplary embodiment of the present invention, a multi-layer power amplifier is provided that comprises two or more chassis and circuits attached to impedance matching interfaces according to the present invention. This multi-layered power amplifier is configured to amplify an energy signal and have a significantly reduced volume compared to existing power combiners.

Abstract: The present invention is directed to a compact balun device that includes an unbalanced port and a set of balanced differential ports. A first set of coupled transmission line structures is coupled to the unbalanced port and one port of the set of balanced differential ports. The first set of coupled transmission line structures is characterized by at least one device parameter and a first length that is substantially equal to a quarter of a wavelength (?). The wavelength (?) corresponds to a first frequency. A second set of coupled transmission line structures is coupled to another port of the set of balanced differential ports. The second set of coupled transmission line structures is characterized by the at least one device parameter and a second length that is substantially equal to the quarter of a wavelength (?). The wavelength (?) corresponds to the first frequency.

Abstract: A combiner/divider circuit may include a plurality of transmission lines forming a junction, a sum port, a first component port, a second component port, and a difference port. A transmission line may be associated with the difference port and may be formed by inductively coupling a portion of each of two other transmission lines. The difference port may be terminated by a terminating impedance element at a location spaced apart from the junction, with the inductively coupled portions being between the junction and the terminating impedance element.

Abstract: A coupling slot 10 provided in a wide wall shared by a first rectangular waveguide 8 and a second rectangular waveguide 9 arranged by stacking is formed by directing a longitudinal direction of the coupling slot 10 to a tube axial direction, and a matching conductor 11 projecting to a waveguide near the coupling slot 10 is provided on one sidewall of the second rectangular waveguide 9. A process of providing the matching conductor 11 is easy, a structure that can be manufactured at low cost is obtained, and a power distribution ratio can be set at an arbitrary ratio.

Abstract: In cases where a power divider is constructed by using a multilayer substrate, a power divider is obtained which is smaller in size and has a good reflection property. The power divider according to the present invention is provided with a multilayer dielectric substrate (1), strip conductor patterns (2a through 2c) formed on one surface of the multilayer dielectric substrate (1), and a ground conductor pattern (3) formed on the other surface of the multilayer dielectric substrate (1), wherein a transmission line is composed of the dielectric substrate (1), the strip conductor patterns (2a through 2c) and the ground conductor pattern (3), and the transmission line has its one end branched to form a plurality of branch lines (12a, 12b), with an isolation resistance (4) being formed between the branch lines.

Abstract: The invention relates to a method and a device for pseudo-differential transmission in interconnections used for sending a plurality of electrical signals. The ends of an interconnection having 4 transmission conductors and a return conductor distinct from the reference conductor are each connected to a termination circuit. Three damping circuits are connected between the return conductor and the reference conductor. The transmitting circuits receive at their inputs the signals from the 4 channels of the two sources, and are connected to the conductors of the interconnection. A transmitting circuit in the activated state produces natural electrical variables, each natural electrical variable being allocated to one and only one channel.

Abstract: A reconfigurable Wilkinson power divider, methods of manufacture and design structures are provided. The structure includes a first port, and a first arm and a second arm connected to the first port. The first arm and the second arm each include one or more tunable t-line circuits. The structure also includes a second port and a third port connected to the first port via the first arm and second arm, respectively.

Abstract: The present invention relates to an orthomode transducer (OMT) device (1) for splitting a linear orthogonally polarized electromagnetic signal into a plurality of linearly polarized frequency components and vice versa. The OMT device comprises a rectangular or circular guide section having a constant cross-section perpendicular to a lengthwise direction of said guide section and first and second lengthwise opposed open ends, a septum (3) that is successively increased in height; extending from an end of the a wave guide portion (4) towards a second lengthwise open end of the guide section, wherein that the plane of said septum (3) is provided at an angle of 45 degrees relative to the polarization axes of the orthogonal linear polarization modes and said septum (3) induces a differential phase shift of substantially 180 degrees or a multiple of 180 degrees between components of the linear polarization modes that are perpendicular to said septum (3) and components that are parallel to said septum (3).