Abstract: A device includes a top ferrite layer and a bottom ferrite layer. The device also includes a first circuit stack between the top ferrite layer and the bottom ferrite layer. The first circuit stack includes a first dielectric layer and a circulator circuit including a first circuit portion on a first side of the first dielectric layer and a second circuit portion on a second side of the first dielectric layer opposite the first side. The first circuit portion is different from the second circuit portion. The device also includes a second circuit stack including a second dielectric layer and a top ground layer disposed over the second dielectric layer. The second circuit stack is disposed over the top ferrite layer.

Abstract: An impedance matching device comprises a variable reactance circuit. The variable reactance circuit comprises a loosely coupled line portion 4 which includes a first line 2 and a second line 3 loosely coupled to the first line. One end 3a of the second line is connected to ground 5. The variable reactance circuit further comprises a capacity variable portion 6 provided between the other end 3b of the second line and ground. The capacity variable portion comprises a diode 7 connected between the other end of the second line and ground, a capacitor 8 connected in series to the diode between the other end of the second line and the diode, a variable DC power supply 11 connected between ground and a connection point 9 between the capacitor and the diode so as to apply reverse bias voltage to the diode, and a resistor 10 connected in series to the variable DC power supply between the connection point and ground.

Abstract: A power divider includes first to third transmission lines (TLs) and first to third capacitors. The second TL includes a first transmission portion (TP) and a first output portion (OP). The first TP is connected between the first TL and the first OP. The third TL includes a second TP and a second OP. The second TP is connected between the first TL and the second OP. The first capacitor is connected between ground and a common node of the first TL and the first and second TPs. The second capacitor is connected between ground and a terminal of the first OP distal from the first TP. The third capacitor is connected between ground and a terminal of the second OP distal from the second TP.

Abstract: A dielectric waveguide filter includes a dielectric body including a first and a second surfaces. The dielectric waveguide filter includes a metal plating covering an outer surface of the dielectric body. The dielectric waveguide filter includes a coupling structure formed a portion of the second surface. The coupling structure includes a coupling groove extending from the second surface into the dielectric body and including a coupling surface parallel to the second surface. The coupling structure includes an inner conductor at an annular center of the coupling groove that surrounds the inner conductor and separates the dielectric body into the inner conductor and an outer conductor. The inner conductor in the coupling groove includes a metal surface on the second surface. A distance between the coupling surface and the second surface is related to a coupling degree of the coupling structure.

Abstract: Provided is an antenna that suppresses increase in passing loss when phase-shifting signals input from an antenna element throughout a wide frequency band. The antenna includes a power feeding circuit 20 that converts four input signals input with phase differences different by 90 degrees from an antenna element so that the four input signals have a same phase and outputs them as one combined signal from an output terminal s31. The power feeding circuit 20 includes a first phase circuit portion 200A that phase-shifts the four input signals and combines them two by two to output two first combined signals, and a second phase circuit portion 200B that phase-shifts each of the two first combined signals by 90 degrees by reversing a shift direction to combine the two first combined signals. The second phase circuit portion 200B includes cascade-type phase shifters 241, 242 in which two 45 degrees phase-shifters or three 30 degrees phase shifters are connected in series.

Abstract: Filters include a housing and at least first through fourth resonators are mounted within the housing. The first resonator is configured to couple with the second resonator and the third resonator but not the fourth resonator. The second resonator is configured to couple with the first resonator and the fourth resonator but not the third resonator. The third resonator is configured to couple with the first resonator and the fourth resonator but not the second resonator. The fourth resonator is configured to couple with the second resonator and the third resonator but not the first resonator. The first, second and fourth resonators are configured to resonate within a passband of the filter, while the third resonator is configured to resonate outside the passband of the filter.

Abstract: A thin film type resonator used in a wireless power transmission system is proposed together with a design method thereof. The thin film type resonator may include a thin film line formed in a spiral shape. The thin film line may have a form factor in which a width and a pitch of the thin film line gradually increase from an innermost portion to an outermost portion.

Abstract: Tri-state triple band remotely configurable tuning probes for slide screw impedance tuners allow instantaneous larger frequency coverage beyond the capacity of existing tuning probes using the single horizontal and vertical axis mechanism of a prior art single probe, single band tuner. This is done by combining two tuning slugs, a master slug and a slave slug into a configurable tuning probe assembly mounted in the same mobile tuner carriage and controlled using a single vertical axis mechanism. To avoid spurious resonance phenomena the tuning slugs are controlled, driven, and locked vertically sliding on each other, and guided appropriately allowing smooth, uninhibited vertical movement of the metallic bodies.

Abstract: The present invention relates to a tunable waveguide resonator and a method of tuning a frequency of the tunable waveguide resonator. The waveguide resonator comprises a waveguide part having a plurality of walls where one of the plurality of walls at least partly comprises a tuning element. The tuning element has a first main surface facing toward a first main surface of an inner wall of one other wall of the plurality of walls. The tuning element is caused to, in response to a change in a temperature of the tuning element be reversibly displaced with respect to a reference plane of the first main surface of the tuning element along an extension perpendicular to the first main surface of the one other inner wall and whereby changing a dimension of a cavity of the tunable wave-guide resonator.

Abstract: A resonator is described including: a first part of a metal cavity; a first ring extending from the first part of the metal cavity, wherein at least part of an external surface of the first supporting ring is coated with a first metal coating that provides an electrical connection to the metal cavity; a second part of the metal cavity; and a ceramic ring extending from the second part of the metal cavity. At least part of an external surface of the ceramic ring is coated with a second metal coating that provides an electrical connection to the metal cavity, wherein the first and second parts are mounted to form the metal cavity such that the first ring and the ceramic ring partially overlap such that at least part of the ceramic ring is between at least parts of the first and second metal coatings.

Abstract: This application describes an apparatus and system for a Wide band end launcher to convert a signal in a coaxial line to a CPW line. The apparatus uses a transition zone which gradually tapers in two inclined planes from the coaxial line to the CPW line, connecting the central conductor of the coaxial line to the central conductor of the CPW line. In addition, the outer conductor of the coaxial line is connected to the ground plates of the CPW line. This allows for high bandwidth transfers between the two types of lines for accurate measurements and other purposes.

Abstract: In a noise filter circuit, a coupling loop part having a capacitor which is connected to both a positive electrode side input loop line and a negative electrode side output loop line is mounted on a dielectric substrate in a state where a positive electrode side input line and a positive electrode side input end part are connected, a positive electrode side output line and a positive electrode side output end part are connected, a negative electrode side input line and a negative electrode side input end part are connected, and a negative electrode side output line and a negative electrode side output end part are connected.

Abstract: This waveguide comprises: a first multilayered board in which a first dielectric layer and a plurality of first conductive layers the latter of which has a first opening are stacked; a first through via group in which a plurality of first through vias for electrically connecting the first conductive layers are aligned, in an in-plane direction of the first multilayered board, at intervals that are equal to or less than the one-half wavelength of an electromagnetic wave that is to be caused to propagate through the waveguide; and a second through via group in which a plurality of second through vias for electrically connecting the first conductive layers are aligned at said intervals in the in-plane direction. The waveguide does not have any through vias other than the plurality of first through vias and the plurality of second through vias.

Abstract: A high-frequency transmission element is provided. The high-frequency transmission element includes a connecting wire structure and an impedance matching plate structure. The connecting wire structure includes a connecting wire and a connecting pad. The connecting pad is located at an end of the connecting wire. The impedance matching plate structure includes an impedance matching plate body, an opening, and an impedance matching portion. The connecting pad is located in a projection range of the opening in a direction of orthographic projection of the impedance matching plate structure. The impedance matching portion is located in a periphery of the opening and extends in the direction from the connecting wire towards the connecting pad.

Abstract: A filter includes a multilayer body, plate electrodes, resonators, shield conductors, and connecting conductors. The multilayer body includes dielectric layers. The plate electrodes are spaced apart from one another in the multilayer body in a lamination direction thereof. The resonators are between the plate electrodes and extend in a first direction orthogonal or substantially orthogonal to the lamination direction. The shield conductors are on lateral surfaces of the multilayer body and are connected to the plate electrodes. The connecting conductors connect the resonators to the plate electrodes. The resonators are side by side in a second direction in the multilayer body. The resonators each include first and second ends. The first ends are connected to the shield conductor, and the second ends are spaced away from the shield conductor.

Abstract: A resonator includes a body shaft portion, a resonant disk portion and a coupling face portion. The body shaft portion has a top end and a bottom end. An inner cavity is slotted between the top end and the bottom end. The resonant disk portion is integrally formed on the top end. The coupling face portion is integrally formed on the bottom end. The body shaft portion includes a first outer surface and the coupling face portion includes a second outer surface. A first connecting arc surface is formed between the first outer surface and the second outer surface. The inner cavity has a central axis. In a transverse section perpendicular to the central axis, a wall thickness T of the body shaft portion is 0.5 mm˜1 mm and a first arc length R1 of the first connecting arc surface is no more than 0.25 mm.

Abstract: A multi-layer, highly-integrated antenna feed assembly and a method of manufacturing a multi-layer, highly-integrated antenna feed assembly are described herein. The antenna feed assembly includes multiple polarization forming networks operable over different frequency bands. In an example embodiment, the antenna feed assembly includes five layers of conductive material. Alternatively, the number of layers may be different than five.

Abstract: An adjustment method for an antenna device including an antenna, an adjustment circuit including first and second circuits connected in series with the antenna and a communication circuit connected with the adjustment circuit includes: determining constants of the first circuit such that at two frequencies, values of first resistance of first impedance as viewed from an output end of the first circuit toward the antenna each are equal to resistance of target impedance, and absolute values of first reactance of the first impedance are different from one another; and determining constants of the second circuit such that at the frequencies, while values of second resistance of second impedance as viewed from an output end of the adjustment circuit toward the antenna are kept at the values of the first resistance, values of second reactance of the second impedance each are a complex conjugate with reactance of the target impedance.

Abstract: A microwave circulator including an integrated circuit and having a number of ports, a respective superconducting ring segment coupled to each port to allow microwave frequency signals to be transferred between the port and the respective ring segment, a superconducting tunnel junction interconnecting each pair of adjacent ring segments to form a circulator ring, wherein the tunnel junctions are configured so that when a bias is applied to the tunnel junctions, signals undergo a phase shift as they traverse the tunnel junctions between ring segments, thereby propagating signals to an adjacent port in a propagation direction and at least one feature to at least partially suppress quasiparticles within the circulator.

Abstract: An analog front-end architecture for a capacitive pressure sensor with a low-noise amplifier unit for amplification of sensor signals from the sensor. The amplifier unit includes first and second integrator units for integrating charges injected into input terminals of the amplifier unit and for outputting integrated charges to output terminals of the amplifier unit, a feedback unit, and a startup unit. The feedback unit reinjects integrated charges from the integrator unit into the input terminals of the amplifier unit. The startup unit is switchable between first and second switching states and is configured, in the first switching state, to route the charges injected into the input terminals past the first integrator unit into the second integrator unit and from the second integrator unit into the feedback unit, and, in the second switching state, to route charges injected into the input terminals directly into the first integrator unit.