Abstract: Aspects of the disclosure provide a connector. The connector includes a first signal conductor. The first signal conductor is configured to receive a first electronic signal that includes multiple frequency components. The first signal conductor includes a plurality of conductor portions having portion-dependent impedances. The first signal conductor is configured to transfer the first electronic signal between a via on a circuit board that has a via stub and an electronic device to reduce via stub effects. In addition, in an example, the connector includes a second signal conductor to transfer a second electronic signal. The second electronic signal and the first electronic signal are a pair of differential signals. In an example, the first signal conductor and the second signal conductor have different via stub effects.

Abstract: A system that incorporates teachings of the present disclosure may include, for example, a matching network including a tunable reactance circuit configured to be coupled to at least one of a transmitter portion and a receiver portion of a communication device, where the tunable reactance circuit is adjustable to a plurality of tuning states, and where the determination of a tuning state is based on whether detected signal measurements are determined to be invalid and is based on information from at least one of an open-loop or closed-loop feedback configuration of the tunable reactance circuit. Additional embodiments are disclosed.

Abstract: An integrated cavity filter/antenna system includes a substrate, a cavity filter formed in or on the substrate. A first cavity resonator is in or on the substrate that is enclosed by metal walls. At least a second cavity resonator is formed in or on the substrate that is enclosed by metal walls. An inter-resonator coupling structure couples energy between the first cavity resonator and the second cavity resonator. An antenna is integrated with one of the cavity resonators so that the antenna acts as both a port of the cavity filter and as a radiating element for the filter/antenna system. A connector is coupled to one of the cavity resonators for coupling energy into the filter/antenna system.

Abstract: An equalizer includes a circuit board and a compensation module. The compensation module includes first and second transmission lines, first to fourth resistors, and first to fourth micro-strips. Two vias extend through the circuit board and are grounded. First terminals of the first and second resistors are electrically connected to the ground layer through the first via. First terminals of the third and fourth resistors are electrically connected to the ground layer through the second via. A second terminal of the first resistor is electrically connected to the first transmission line through the first micro-strip, and is further electrically connected to a second terminal of the second resistor through the second micro-strip. A second terminal of the third resistor is electrically connected to the second transmission line through the third micro-strip, and is further electrically connected to a second terminal of the fourth resistor through the fourth micro-strip.

Abstract: An equalizer circuit includes a passive equalizer having an inductor connected in parallel to a signal interconnection line, the inductor being made up of a conductor portion formed on a side face of a through-hole of a circuit board.

Abstract: Mechanical vertical stops, in form of metallic or plastic screws or dowel pins are introduced as permanent limits and attached on the tuning probes or the vertical axis of slide screw impedances tuners; the vertical stops are adjusted in order to prevent the probes from getting closer to the center conductor than a certain limit; this limit is calculated to prevent corona discharge at a specified maximum RF power and a required maximum reflection factor (Gamma). The adjustment method uses measured data of Gamma as a function of the vertical position of the probe to estimate and adjust for the requested gap to be maintained between the probes (at their lowest position) and the center conductor at any given RF power. The technique can be used in automatic, stepper controlled, as well as in manual, micrometer screw controlled, tuners.

Abstract: An RF transmission line device with high performance, wide band characteristics includes an inner conductor for transmitting communication signals of a desired frequency band and a grounded outer conductor electrically insulated from the inner conductor by at least one dielectric material. A tap conductor is connected to the inner conductor and serves as an auxiliary path through which signals outside the desired frequency band can be externally injected into and/or retrieved from the through RF path, the tap conductor extending longitudinally through a tap housing conductively coupled to the outer conductor. As a feature of the invention, a modular attachment is removably coupled to the tap housing and includes a plurality of voltage suppression components that are arranged in the conductive path between the tap conductor and the tap housing, the voltage suppression components discharging transient voltages diverted from the inner conductor by the tap conductor.

Abstract: A band-pass filter includes an input node coupled to receive an oscillating input signal, an output node, and a first LC resonator coupled to a first node coupled between the input node and the output node and to a first power supply node coupled to provide a first voltage. The first LC resonator includes a first capacitor, and a first inductor coupled in series with the first capacitor. The output node is coupled to output a filtered response signal that includes at least one zero based on the oscillating input signal and the first LC resonator.

Abstract: A termination configured to absorb high microwave power while generating low levels of passive intermodulation interference. The termination includes a microwave cable having a first end and a second end providing an insertion loss from the first end to the second end, a heat-dispersive element in thermal contact with at least a portion of the microwave cable, a channel accommodating the microwave cable, and an input connector coupled to the proximal end of the microwave cable. Optionally, one or more plates having grooves to accommodate the microwave cable may be provided between the heat-dispersive elements.

Abstract: A transmission line having a plurality of branch lines that respectively include a first end part and a second end part and have a same line length, in which at least part of the plurality of branch lines includes bent shapes, the first end parts of the plurality of branch lines are connected to a common terminal, and the second end parts of the plurality of branch lines are connected to a common terminal. The plurality of branch lines may include two micro strip lines that are formed on substrates having the same dielectric constant and have bent shapes in symmetry with each other with respect to a straight line.

Abstract: A circulator comprises a thermally conductive waveguide housing having a plurality of hollow waveguide arms that communicate with a central cavity, with the hollow waveguide arms each having at least one inner sidewall surface that is angled toward the central cavity. A ferrite element is disposed in the central cavity of the waveguide housing. The ferrite element includes a central portion and a plurality of ferrite segments that extend from the central portion. The ferrite segments each protrude into a separate waveguide arm along the at least one inner sidewall surface, with at least one side of each ferrite segment attached to the at least one inner sidewall surface.

Abstract: The present disclosure may include, for example, a tunable capacitor having a decoder for generating a plurality of control signals, and an array of tunable switched capacitors comprising a plurality of fixed capacitors coupled to a plurality of switches. The plurality of switches can be controlled by the plurality of control signals to manage a tunable range of reactance of the array of tunable switched capacitors. Additionally, the array of tunable switched capacitors is adapted to have non-uniform quality (Q) factors. Additional embodiments are disclosed.

Abstract: Terahertz metamaterials comprise a periodic array of resonator elements disposed on a dielectric substrate or thin membrane, wherein the resonator elements have a structure that provides a tunable magnetic permeability or a tunable electric permittivity for incident electromagnetic radiation at a frequency greater than about 100 GHz and the periodic array has a lattice constant that is smaller than the wavelength of the incident electromagnetic radiation. Microfabricated metamaterials exhibit lower losses and can be assembled into three-dimensional structures that enable full coupling of incident electromagnetic terahertz radiation in two or three orthogonal directions. Furthermore, polarization sensitive and insensitive metamaterials at terahertz frequencies can enable new devices and applications.

Abstract: Various exemplary embodiments relate to a support assembly for a planar filter. The assembly includes a u-shaped housing with angled surfaces at the inner corners of the u-shape, a first dielectric plate having a first angled surface in contact with one of the angled surfaces of the housing, a second dielectric plate having a second angled surface in contact with the other angled surface of the housing, at least one compressible ring, and a cover. The planar filter is supported between the first dielectric plate and the second dielectric plate. The cover compresses the compressible ring to apply downward force on the first and second dielectric plates. The downward force is translated to an inward force by the angled surfaces of the housing. The angled surfaces of the housing apply an inward force on the first dielectric plate and the second dielectric plate.

Abstract: A module includes a substrate including an IC disposed on an upper surface side thereof. The IC includes a modulation circuit unit arranged to modulate a baseband signal into an RF signal and a demodulation circuit unit arranged to demodulate an RF signal into a baseband signal. The substrate includes a first wiring layer provided on the upper surface side, a second wiring layer disposed on a lower surface side of the first wiring layer, and an insulator layer disposed between the first wiring layer and the second wiring layer. A baseband signal-use wiring pattern is provided in the first wiring layer, an RF signal-use wiring pattern is provided in the second wiring layer, and on one surface of the insulator layer, a substantially flat-plate ground electrode pattern is arranged to cover substantially an entire surface. A balun is provided in the second wiring layer.

Abstract: Methods for tuning a tunable matching network can involve comparing a source impedance of a source to a real part of a load impedance of a load. Depending on characteristics of the network, capacitances of one or more tunable capacitors can be set to correspond to device boundary parameters, and capacitances of remaining tunable capacitors can be set based on a predetermined relationship between the parameters of the capacitors, the source, the load, and other components. From these initially determined values, the capacitance value of one or more of the capacitors can be adjusted to fall within device boundary conditions and achieve a perfect or at least best match tuning configuration.

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: A device comprises a waveguide structure that includes multiple arms extending from the structure, wherein the arms connect to the structure; a switching element disposed in the structure and having multiple segments, each segment being associated with a waveguide arm, wherein the switching element has an E-plane aperture extending through the switching element, wherein the E-plane aperture is aligned perpendicularly to the H-plane; and an E-plane magnetizing winding inserted through the E-plane aperture such that current applied to the E-plane magnetizing winding establishes a magnetic field in the switching element that is aligned with the H-plane.

Abstract: A mobile device includes an adjustable impedance matching network coupled between a power amplifier and an antenna and has an adjustable impedance element. An impedance sensor is coupled between the power amplifier and adjustable impedance matching network. A processor is configured to a) calculate a corrected antenna load impedance based upon a sensed impedance at inputs of the impedance matching network and a current value of the adjustable impedance element, and b) determine a new value for the adjustable impedance element based upon the corrected antenna load impedance. The processor is also configured to c) set the adjustable impedance element to the new value, and d) sense a new impedance at the inputs and determine if the sensed new impedance is within a threshold value of the power amplifier impedance, and repeat steps a), b), and c) if the sensed new impedance is not within the threshold value.

Abstract: An impedance matching apparatus is provided. The impedance matching apparatus includes a signal separation unit, an impedance detection unit, and an impedance matching unit. The signal separation unit separates a transmission and reception signal, and selectively passes a desired frequency corresponding to the transmission and reception signal. The impedance detection unit receives a signal outputted from the signal separation unit to detect first and second electric potentials between a plurality of impedances. The impedance matching unit compares the first and second electric potentials detected by the impedance detection unit to match the impedances.