Abstract: In an impedance matching device, a storage unit stores a control value representing a load value and a value equivalent to input impedance in advance. The control value identifies inductance and capacitance values matching a predetermined impedance value by use of either a first or second matching circuit. An impedance estimation unit estimates input impedance of the power transmission antenna. The load value estimation unit estimates load value of a circuit connected to a power reception antenna and consuming transmitted electric power. A circuit selection unit electrically connects the first matching circuit, the second matching circuit, or a through circuit per the load value and the input impedance equivalent value. A control value output unit reads out the control value stored in the storage unit based on the load value and the input impedance equivalent value, and outputs the control value to the circuit selected by the circuit selection unit.

Abstract: A microresonator with an input electrode and an output electrode patterned thereon is described. The input electrode includes a series of stubs that are configured to isolate acoustic waves, such that the waves are not reflected into the microresonator. Such design results in reduction of spurious modes corresponding to the microresonator.

Abstract: A bus bar device with a noise filter includes a magnetic body, a bus bar and first to third capacitors. The bus bar has input and output ends and extends through the magnetic body. The capacitors are disposed on an electrical path between the bus bar and a ground conductor surface. The first capacitor is located at the input end side of the bus bar and the second and third capacitors are located at the output end side. The first capacitor has one end connected to the bus bar and the other end connected to the ground conductor surface in one of two regions divided by the bus bar. Each one of the second and third capacitors has one end connected to the bus bar and the other end connected to the ground conductor surface in the same region as the first capacitor or in the other region.

Abstract: Integrated circuit packages with stripline structures are provided. An integrated circuit package substrate may include a core layer having top and bottom surfaces and dielectric layers formed on the top and bottom surfaces of the core layer. Stripline structures may be formed in at least some of the dielectric layers. A stripline trace may include signal routing conductors sandwiched between top and bottom ground planes. In particular, a dielectric layer may be formed between the signal conductors and the bottom ground plane to support the signal conductors, whereas a localized air region may be formed over the signal routing conductors separating the signal conductors from the top ground plane. If desired, the region above the signal routing conductors between the top ground plane and the signal routing conductors may be filled using other types of material having low loss and/or a dielectric constant that is frequency independent.

Abstract: In an impedance matching device, a storage unit stores a control value representing a load value and a value equivalent to input impedance in advance. The control value identifies inductance and capacitance values matching a predetermined impedance value by use of either a first or second matching circuit. An impedance estimation unit estimates input impedance of the power transmission antenna. The load value estimation unit estimates load value of a circuit connected to a power reception antenna and consuming transmitted electric power. A circuit selection unit electrically connects the first matching circuit, the second matching circuit, or a through circuit per the load value and the input impedance equivalent value. A control value output unit reads out the control value stored in the storage unit based on the load value and the input impedance equivalent value, and outputs the control value to the circuit selected by the circuit selection unit.

Abstract: A transmission line includes a signal terminal for inputting a first signal and a second signal, a first wire coupled to the signal terminal for transmitting the first signal, a second wire coupled to the signal terminal for transmitting the second signal, a filtering module coupled to the first and second wires for receiving the first and second signals to filter out noises of the first and second signal, a third wire coupled to the filtering module for transmitting the first signal, and a fourth wire coupled to the filtering module for transmitting the second signal.

Abstract: A multiplexer with a common port feeding structure is disclosed. The multiplexer with a common port feeding structure of the present invention comprises: a housing comprising an antenna connector connected to an antenna for bidirectional transmitting and receiving and a plurality of input/output connectors bidirectionally inputting and outputting a specific frequency band of wireless signals which are input/output through the antenna; a plurality of band-pass filter units mounted inside the housing to transmit wireless signals at between the antenna connector and the input/output connector to pass a specific frequency band; and a coupling unit having a plurality of feeding members to couple the antenna connector and each of the plurality of band-pass filter units.

Abstract: A digitally controlled phase shifter is disclosed. In an exemplary embodiment, an apparatus includes a first component connected between a first terminal and a node, a second component connected between a second terminal and the node, an impedance selectively connected between the first and second terminals by a first switch, and a second switch to connected between the node and a ground. The apparatus is configured to provide a first amount of phase shift when the first and second switches are in an open position, and a second amount of phase shift when the first and second switches are in a closed position.

Abstract: An adjustable directional coupler circuit includes a directional coupler and a correction circuit. The directional coupler includes a first port for receiving an input signal; a second port for outputting the input signal to a load; a third port for outputting a first coupled signal including a desired first coupled signal proportional to forward power of the input signal and an extraneous first coupled signal proportional to reverse power of a reflected signal; and a fourth port for outputting a second coupled signal including a desired second coupled signal proportional to the reverse power and an extraneous second coupled signal proportional to the forward power. The correction circuit adjusts magnitude and phase of a sample of the second coupled signal to provide an adjusted second coupled signal, and to sum the adjusted second coupled signal and the first coupled signal to cancel the extraneous first coupled signal.

Abstract: A tunable guard ring for improved circuit isolation is disclosed. In an exemplary embodiment, an apparatus includes a closed loop guard ring formed on an integrated circuit and magnetically coupled by a selected coupling factor to a first inductor formed on the integrated circuit. The apparatus also includes a tunable capacitor forming a portion of the closed loop guard ring and configured to reduce magnetic field coupling from the first inductor to a second inductor.

Abstract: An improved nondirectional radiofrequency power divider is characterized by the following features: —having an outer conductor (1) and/or outer conductor housing (1?), with a first inner conductor (11), wherein the first inner conductor (11) runs in the outer conductor (1) or in the outer conductor housing (1?), —with a second inner conductor (13), wherein the second inner conductor (13) runs in the space (15) which is formed between the first inner conductor (11) and the outer conductor (1) or the outer conductor housing (1?), —the second inner conductor (13) is electrically connected to a branch line running away therefrom or is provided therewith, the second inner conductor (13) is relatively adjustable and/or positionable in terms of the distance of said second inner conductor from the first inner conductor (11) and/or in terms of the distance of said inner conductor from the outer conductor (1) or from the outer conductor housing (1?) so as to effect a variable power distribution.

Abstract: In an impedance matching device, a storage unit stores a control value representing a load value and a value equivalent to input impedance in advance. The control value identifies inductance and capacitance values matching a predetermined impedance value by use of either a first or second matching circuit. An impedance estimation unit estimates input impedance of the power transmission antenna. The load value estimation unit estimates load value of a circuit connected to a power reception antenna and consuming transmitted electric power. A circuit selection unit electrically connects the first matching circuit, the second matching circuit, or a through circuit per the load value and the input impedance equivalent value. A control value output unit reads out the control value stored in the storage unit based on the load value and the input impedance equivalent value, and outputs the control value to the circuit selected by the circuit selection unit.

Abstract: Disclosed in the present specification is a circuit board. The circuit board includes a first reference plane and a second reference plane, wherein the second reference plane includes a defected ground structure. The circuit board also includes a signal trace coupled to a signal via, wherein the signal trace is disposed above the first reference plane. The circuit board additionally includes a spiral inductor positioned adjacent to the defected ground structure, wherein the spiral inductor is coupled to the signal via.

Abstract: An assembly and method for providing electromagnetic interference isolation. The assembly includes an enclosure which has a first panel and a second panel. Bus bars extend through the first panel and the second panel. A mounting plate is positioned between the first panel and the second panel. The mounting plate has locating members thereon. A plurality of inductive cores are positioned proximate the locating members, the inductive cores having openings through which the bus bars extend. The inductive cores are precisely positioned in the enclosure to facilitate the electromagnetic interference isolation.

Abstract: A coupling apparatus having plurality of branches and a resistive element is disclosed. Each branch may be configured to couple at least one of (i) a first input node and (ii) a second input node to a first output node through a plurality of switches and a plurality of capacitors. The resistive element generally connects the first output node to a second output node. The first output node may be loaded by a respective parasitic capacitance of at least one of the switches.

Abstract: The present invention relates to a waveguide tuning device (1) arranged for mounting in a waveguide structure (2) which has a longitudinal extension (L) and comprises a first inner wall (3), a second inner wall (4), a third inner wall (5) and a fourth inner wall. The inner walls are arranged such that a rectangular cross-section is obtained for the waveguide structure. The first inner wall (3) and the second inner wall (4) have a first length (b) and are facing each other. The third inner wall (5) and the fourth inner wall (6) have a second length (a) and are facing each other. The electrical field (E) is parallel to the main surfaces of the first inner wall (3) and the second inner wall (4). The tuning device (1) is electrically controllable and arranged for mounting at the first inner wall (3) and/or the second inner wall (4). The present invention also relates to a tunable waveguide structure.

Abstract: A microwave signal connector can comprise a first portion of an inner conductor comprising a first diameter. A second portion of the inner conductor comprises a second diameter less than the first diameter and is in contact with the first portion of the inner conductor. An outer conductor is disposed around the first portion of the inner conductor and the second portion of the inner conductor with a first inner diameter disposed over the first diameter and a second inner diameter disposed over the second diameter. A dielectric material is disposed between the second portion of the inner conductor and the outer conductor that extends along a length of the second portion of the inner conductor. An adhesive is attached to the dielectric material, the second portion of the inner conductor, and the outer conductor.

Abstract: A hybrid diplexer combining planar transmission line(s) and a waveguide is disclosed. In one embodiment, a diplexer includes first, second, and third ports. The diplexer also includes a first signal path and a second signal path. The first signal path may be used to convey lower frequencies, and may be implemented using planar transmission lines. The second signal path may be used to convey higher frequencies, and may be implemented, at least in part, using a waveguide. The first signal path may be coupled between the first port and the second port, while the second signal path may be coupled between the first port and the third port. In one embodiment, the first signal path may implement a low-pass filter, while the second signal path may implement a high-pass filter.

Abstract: Embodiments of coupler systems (10) include a directional coupler (12), a tuning element (14a, 14b), and an actuator (16a, 16b). The coupler (12) is configured to split an input signal into two output signals or, alternatively, to combine two input signals into a single output. The tuning element (14a, 14b) is a capacitive device that allows the frequency response of the coupler (12) to be varied, so that the coupler (12) can be tuned to a particular frequency or range of frequencies at a given operating condition. The actuator (16a, 16b) generates a mechanical force that actuates tuning element (14a, 14b).

Abstract: A compact interfacing device for rotating electro-magnetic fields between an input and output waveguide includes a support bar extending between opposing sides of a frame, the frame encircling an interior space divided by the support bar; and a dipole bar orientated orthogonal to the support bar. When the input waveguide interfaces an input-side of the frame and is arranged so that an extent of an input width of the input waveguide is orientated at first angle with respect to an extent of the dipole-bar length, and when the output waveguide interfaces an output-side of the frame and is arranged so that an extent of an output width of the output waveguide is orientated at a second angle with respect to the extent of the dipole-bar length, an input electric field aligned perpendicular to the extent of the input width is rotated upon propagating through the compact interfacing device.