Abstract: An acoustic wave element having reflectors providing capacitance according to the present invention further improves skirt characteristics of the acoustic wave element steeply by configuring the reflector structure of the acoustic wave element such as a SAW resonator, a composite resonator, and DMS as a capacitive reflector structure so that the parallel resonance frequency can be shifted toward the series resonance frequency without additional capacitors connected to the acoustic wave element while maintaining the area.

Abstract: According to one embodiment, a computing device includes an element section, a first conductive portion, a second conductive portion, a first coupling conductive portion, and a controller. The element section includes a first structure, a second structure, and a first coupling structure. The first structure includes a first cavity resonator having a first resonance frequency, a first other cavity resonator having a first other resonance frequency, and a first coupler configured to couple the first cavity resonator and the first other cavity resonator. The first other resonance frequency is lower than the first resonance frequency. The second structure includes a second cavity resonator having a second resonance frequency, a second other cavity resonator having a second other resonance frequency, and a second coupler configured to couple the second cavity resonator and the second other cavity resonator. The second other resonance frequency is lower than the second resonance frequency.

Abstract: An electronic component is provided that includes a substrate, an insulator layer expanding over a surface of the substrate, a planar conductor on the substrate or in the insulator layer and expanding in a plane parallel to the surface of the substrate, and an inductor conductor pattern on the insulator layer or in the insulator layer. When viewed in a direction perpendicular to the surface of the substrate, a length in a longitudinal direction of a region in which a region with the inductor conductor pattern overlapping the planar conductor is represented by Ls, and a distance between the inductor conductor pattern and the planar conductor is represented by d, such that Ls/d is 1 or more and 60 or less.

Abstract: A high- and low-pass network circuit with integrated amplitude-phase regulation, including a high- and low-pass network phase-shift unit circuit and amplitude modulation unit subcircuits each including an amplitude modulation switch transistor and a resistor connected in parallel. The high- and low-pass network phase-shift unit circuit includes high-pass and low-pass network subcircuits. A first end of the high-pass network subcircuit is connected to a first end of the low-pass network subcircuit through phase modulation switch transistors M1 and M3. A second end of the high-pass network subcircuit is connected to a second end of the low-pass network subcircuit through phase modulation switch transistors M2 and M4. Body ends of M1 and M2 are connected through two amplitude modulation unit subcircuits. Body ends of M3 and M4 are connected through another two amplitude modulation unit subcircuits. A method for controlling such network circuit is also provided.

Abstract: Provided are apparatuses and methods for a tri-frequency feedchain configured to combine at least three frequency bands on a waveguide. The feedchain includes a turnstile configured to support two orthogonal fundamental modes and combine six filtered signals and a third signal and output the combined signal via an output port. The feedchain also includes at least six filters disposed about the turnstile configured to filter a split signal into the filtered signals. The turnstile is a junction for the filters and includes a port at the interface of each filter and the turnstile for receiving the filtered signal. The turnstile includes a third signal port configured to receive the third signal. The split signals are of an intermediary frequency band comprising a first and second frequency band and the third signal is of a third frequency band. The first, second, and third frequency bands do not intersect.

Abstract: This application provides example bulk acoustic resonators, example acoustic filters, and example electronic devices. One example bulk acoustic resonator includes a piezoelectric material layer, an interdigital transducer, and a dielectric layer. The interdigital transducer is disposed on the piezoelectric material layer. The interdigital transducer includes a first busbar and a second busbar that are disposed opposite to each other, a plurality of first electrodes, and a plurality of second electrodes. The plurality of first electrodes sequentially protrude from the first busbar to the second busbar along an extension direction of the first busbar. The plurality of second electrodes sequentially protrude from the second busbar to the first busbar along an extension direction of the second busbar. The plurality of first electrodes and the plurality of second electrodes are sequentially arranged in a staggered manner between the first busbar and the second busbar.

Abstract: The invention relates to a flexible planar transmission line for communication between a first electronic device and a second electronic device. The flexible planar transmission line comprises a first conducting layer, a dielectric layer, a second conducting layer, a signal line provided in the dielectric layer and a concatenation of a first filter and a second filter, wherein the first filter being arranged to attenuate frequency components of a signal and a second filter being arranged to attenuate higher order modes of the propagated signal.

Abstract: A method for manufacturing an acoustic wave element includes preparing a wafer, attaching the wafer to a dicing tape, dicing the wafer to singulate the acoustic wave element, and abutting a pin against the acoustic wave element with the dicing tape interposed therebetween to separate the acoustic wave element from the dicing tape, and pick up the acoustic wave element. A position at which the pin is abutted against the acoustic wave element overlaps a hollow portion in a support of the acoustic wave element in a lamination direction.

Abstract: Wide-band output isolation is provided. A device includes a first output for a first radio frequency (RF) signal. A device includes a second output for a second RF signal. The device includes a first transistor having a first source/drain. The device includes a second transistor having a first source/drain, wherein the first source/drain of the first transistor is coupled to the first source/drain of the second transistor and wherein the first and second transistors are disposed between the first output and the second output.

Abstract: An equivalent circuit includes a first capacitor having a first capacitance, a circuit part configured to include an inductor component, a capacitor component, and a resistor connected in series with one another, the circuit part being connected in parallel with the first capacitor, and a second capacitor provided between the first capacitor and the circuit part and having a second capacitance. The first capacitance of the first capacitor changes in accordance with a voltage value of a direct current voltage applied to the first capacitor. The second capacitor has the positive second capacitance that changes in accordance with the voltage value of the direct current voltage applied to the first capacitor and that is N times (N>0) the first capacitance of the first capacitor.

Abstract: A coaxial tap in a hybrid fiber coaxial cable distribution system serves subscribers with an RF signal.

Abstract: A filter module includes an antenna connection terminal, filter elements, and inductors. The filter elements are connected to an antenna connection terminal. A first inductor is connected between the antenna connection terminal and the filter elements. A second inductor is connected between a transmission line, which connects the first inductor and the filter elements, and a ground reference potential. The filter elements are on an insulating multilayer substrate. The inductors include electrodes on the multilayer substrate. Inductor electrodes of the first inductor and central cavities of the inductor electrodes are at positions different from other electrodes inside the multilayer substrate.

Abstract: The present disclosure aims to improve the performance of a notch filter using a rectangular waveguide and a cavity. A notch filter has a rectangular opening that is formed in an end face thereof. Inside of the notch filter, a waveguide is connected with circular cavities and by connecting pipes. In a planar shape of the waveguide, from an inlet side thereof, a wide path portion, a tapered portion and a narrow path portion are formed and are further connected with a tapered portion and a wide path portion. The circular cavities and designed according to the frequency of the electromagnetic wave that is to be trapped are provided in the middle of the narrow path portion. The configuration of decreasing the width of the waveguide in a location where the circular cavities are provided improves the performance of removal of the electromagnetic wave by the circular cavities.

Abstract: A metal-integrated suspended line includes multiple metal substrates stacked from top to bottom and connected by rivets or screws to form a self-encapsulating structure. At least two of the metal substrates except a top metal substrate and a bottom metal substrate are spaced apart from each other, and each of the at least two metal substrates defines an air-filled hollow cavity. One of the metals substrates disposed between hollow cavities of the two metal substrates is provided with a circuit structure. The metal-integrated suspended line can give full play to advantages of all-metal-integrated suspended line platform, and achieve the circuit structure with high Q value, good electromagnetic shielding and excellent heat dissipation performance; meanwhile, a slotline structure can be designed by etching slots on the metal substrate disposed between the two hollow cavities of two of the at least two metal substrates.

Abstract: Disclosed is an iris waveguide switch capable of efficiently transmitting and switching a signal between two desired inputs and two desired outputs in high power applications, which is generally used in various applications such as millimeter wave radar, satellite systems and RF test setup. The iris waveguide switch includes two main parts: an inner cylinder and an outer cube. Periodic irises prevent the signal propagating through the gap between the inner cylinder and the outer cube to the side surface of the inner cylinder, guiding the signal into the inner cylinder bend. The inner cylinder, rotated by a drive mechanism, switches the incoming signal between two inputs and two outputs.

Abstract: A slot modulator coupled to a coplanar transmission line including a pair of spaced apart engineered rails forming a waveguide slot therebetween and opposed slabs coupling the engineered rails to the coplanar transmission line. The engineered rails formed at least partially of highly doped silicon and the slabs formed at least partially of highly doped silicon.

Abstract: The present disclosure relates to a filter architecture, which includes a filter bank with multiple filters, an input switch coupled to an input side of the filter bank, and an output switch coupled to an output side of the filter bank. Each filter is multiplexed with one or more different filters at the input side and the output side of the filter bank. At a given time, the input switch is controlled to connect a first group of the filters to a radio frequency (RF) input terminal, and the output switch is controlled to connect a second group of the filters to an RF output terminal. Herein, the first group and the second group have one filter in common, such that the input switch and the output switch are configured to select one of the filters to operate at the given time.

Abstract: A system for efficiently generating a tailored electromagnetic (EM) wave having a lower velocity than the speed of electromagnetic waves in free space includes a parallel-plate waveguide which extends linearly and a sinewave current generator. The parallel-plate waveguide includes a ground plate and a tailored transmitting antenna plate disposed in parallel and spaced apart. The ground plate is formed of a first conductor. The tailored transmitting antenna plate is constructed physically and electrically by at least three phase-shifted sub-antennas connected in series, each of the sub-antennas being formed of a second conductor which has relatively high resistance. The ground plate and the antenna plate define a space therein which may be maintained as vacuum. The sinewave current generator generates multiple phase-shifted sinewave currents which are respectively input to the sub-antennas.

Abstract: A high power electrical signal power combiner including coaxial and integrated waveguide structures, and including thermal stress relief elements and impedance transformation elements is designed and constructed.

Abstract: Disclosed herein are embodiments of a method of manufacturing film bulk acoustic wave resonators. The method comprises forming a sacrificial layer over a surface of a substrate to form a plurality of film bulk acoustic wave resonators on the surface of the substrate, forming a piezoelectric film on the surface of the substrate to cover the sacrificial layer, and removing the sacrificial layer to form an air gap between the surface of the substrate and the piezoelectric film that has covered the sacrificial layer, the air gap corresponding to each of the plurality of film bulk acoustic wave resonators. The step of forming the piezoelectric film includes controlling a concentration distribution of an additive added to the piezoelectric film across the surface of the substrate to suppress a variation of the acoustic velocity of the piezoelectric film depending on a position on the main surface of the substrate.