Abstract: A phase shift device includes an input quadrature junction for receiving an input EM signal and extracting a first electromagnetic (EM) signal, a second EM signal, a third EM signal, and a fourth EM signal from the input EM signal. Four waveguide arms are operatively connected to the input quadrature junction for respectively conveying the first, second, third, and fourth EM signals therethrough. At least two of the waveguide arms shift the phase of EM signal conveyed therethrough such that two of the first, second, third, and fourth EM signals are phase shifted with respect to the other two of the first, second, third, and fourth EM signals. An output quadrature junction is operatively connected to the waveguide arms for combining the first, second, third, and fourth EM signals. Thus, polarization adjustment may be achieved through rotation of the phase shift device.

Abstract: An elastic wave device includes a first unbalanced terminal, a second unbalanced terminal, a first balanced terminal, a second balanced terminal, a first filter part, and a second filter part. A phase of an electric signal transmitted from first unbalanced terminal to the first balanced terminal in the first filter part is different from a phase of an electric signal transmitted from the second unbalanced terminal to the first balanced terminal in the second filter part. A phase of an electric signal transmitted from the first unbalanced terminal to the second balanced terminal in the first filter part is different from a phase of an electric signal transmitted from the second unbalanced terminal to the second balanced terminal in the second filter part.

Abstract: A filter includes one or a plurality of parallel resonators coupled in parallel and one or a plurality of a film bulk acoustic resonators coupled in series, the film bulk acoustic resonator having a substrate, a lower electrode, a piezoelectric membrane, and an upper electrode, wherein: at least one of the lower electrode and the upper electrode has a thick membrane region having a thickness larger than that of a center portion of a resonance region at an edge of the resonance region, the resonance region being a region where the lower electrode and the upper electrode face with each other through the piezoelectric membrane; and a width of the thick membrane region is smaller than a wavelength of an acoustic wave propagating in a direction crossing a thickness direction of the piezoelectric membrane.

Abstract: An elastic wave device includes a resonator and an inductor. One end of the inductor is connected to the resonator, and the other end of the inductor is connected to a ground electrode or a signal electrode. The elastic wave device includes a chip and a mounting substrate. The chip includes a piezoelectric substrate and an interdigital transducer electrode provided on the piezoelectric substrate so define the resonator. The chip is mounted on the mounting substrate. The inductor is provided to the mounting substrate. A dummy electrode to which the one end side of the inductor is connected and the ground electrode or the signal electrode are provided on a surface of the mounting substrate that is opposite to the chip.

Abstract: A network signal processing circuit assembly includes a network-on-chip, a network connector, and a processing circuit including a plurality of channels respectively and electrically connected between the network-on-chip and the network connector, a plurality of signal coupling capacitors respectively electrically coupled to the channels, and a plurality of inductor sets electrically connected in parallel between the signal coupling capacitors and the network connector for causing a back-EMF (back-electro motive force) when receiving power supply from the signal coupling capacitors.

Abstract: The present invention is directed towards a self-polarized capacitive micromechanical resonator apparatus and fabrication method. The apparatus includes a body member capable of retaining a polarization charge in the absence of a polarization voltage source. By creating potential wells or charge traps on the surface of the resonant body member through a nitrogen diffusing process, charges may be trapped in the charge traps. Unless perturbed externally, the charges remain trapped thus enabling a self-polarization technique without the need for any externally applied polarization voltage.

Abstract: An electrical filter for filtering an electrical signal, the filter having a transmission characteristic comprising a band edge at a band edge transition frequency, the filter comprising a circulator having a first circulator port for receiving a signal to be filtered, the circulator being adapted to transfer a signal received at the first circulator port to a second circulator port and being further adapted to transfer a signal received at the second circulator port to a third circulator port; and, a reflection mode filter connected to the second port; the reflection mode filter comprising a filter network comprising at least one resonator, the filter network having a network input connected to the second circulator port; and, a further resonator connected to the network input, the further resonator being arranged to provide an extracted pole providing a transmission zero closest to the band edge transition frequency; wherein the further resonator has a high Q compared to the low Q of at least one of the at

Abstract: Certain embodiments relate to a waveguide/coplanar waveguide (CPW) transition assembly adapted to transition RF signals from a waveguide to a coplanar waveguide (CPW), the waveguide/CPW transition assembly having at least some peripheral walls and including a central waveguide transition septum having the CPW disposed therein. The waveguide/coplanar waveguide (CPW) transition assembly includes an electronic component coupled to the CPW, and control circuitry operationally coupled with the electronic component. Portions of the control circuitry at least partially extend from outside of the at least some peripheral walls to within the at least some peripheral walls.

Abstract: Embodiments are disclosed of an orthomode transducer (OMT) device for splitting a linear orthogonally polarized electromagnetic signal into a plurality of linearly polarized frequency components and vice versa. The 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 that is successively increased in height; extending from an end of the a waveguide portion towards a second lengthwise open end of the guide section, wherein that the plane of said septum is provided at an angle of 45 degrees relative to the polarization axes of the orthogonal linear polarization modes and said septum induces a differential phase shift of substantially 180 degrees or a multiple thereof between components of the linear polarization modes that are perpendicular to said septum and components that are parallel to said septum.

Abstract: Tunable microwave magnetic devices that provide increased performance with reduced size, weight, and cost. The disclosed microwave magnetic devices are voltage-tunable devices that include ferrite substrates. To tune the devices, the magnetic permeability of the respective ferrite substrates is varied by external, voltage-tuned, magnetic fringe fields created by one or more magnetoelectric (ME) transducers.

Abstract: Provided is a phase shifter using a substrate integrated waveguide (SIW). The phase shifter includes: a substrate; and a waveguide integrated on the substrate, wherein the waveguide includes an input port, an out port, two columns of via walls which are separated by a width of the waveguide and are arranged parallel to each other, and either a plurality of air holes which are formed to shift a phase of a signal between the input port and the output port or a plurality of rods, each including an air hole and a dielectric material inserted into the air hole.

Abstract: A duplexer includes a reception filter that is connected between a reception terminal and an antenna terminal and includes one or a plurality of series resonators that are acoustic wave resonators, and a transmission filter that is connected between a transmission terminal and the antenna terminal and includes one or a plurality of acoustic wave resonators, a resonance frequency of a first series resonator that is one of the one or the plurality of series resonators and is closest to the antenna terminal in the reception filter being higher than an upper limit frequency of a reception band of the reception filter.

Abstract: An elastic wave device includes a piezoelectric substrate, an IDT electrode disposed on the piezoelectric substrate, a wiring electrode disposed on the piezoelectric substrate and connected to the IDT electrode, a first insulator disposed on the piezoelectric substrate to seal the IDT electrode and the wiring electrode, a resin layer provided on the first insulator, an inductor electrode disposed on the resin layer, a second insulator disposed on the resin layer to cover the inductor electrode, a terminal electrode disposed on the second insulator, and a connecting electrode passing through the first insulator, the second insulator, and the resin layer to electrically connect the wiring electrode, the terminal electrode, and the inductor electrode. The first insulator includes a resin and filler dispersed in the resin. A density of filler in the resin layer is smaller than an average density of the filler in the first insulator.

Abstract: The present invention is an acoustic wave device including first and second acoustic wave resonators. A first tilt angle that is an angle formed between a direction perpendicular to a direction in which electrode fingers of the first acoustic wave resonator extend and a direction along which the electrode fingers are arranged is different from a second tilt angle that is an angle formed between a direction perpendicular to a direction in which electrode fingers of the second acoustic wave resonator extend and a direction along which the electrode fingers are arranged.

Abstract: An acoustic wave device comprising at least one surface acoustic wave filter and one bulk acoustic wave filter, the device including, on a substrate comprising a second piezoelectric material: a stack of layers including a first metal layer and a layer of a first monocrystalline piezoelectric material, wherein the stack of layers is partially etched so as to define a first area in which the first and second piezoelectric materials are present and a second area in which the first piezoelectric material is absent; a second metallization at the first area for defining the bulk acoustic wave filter integrating the first piezoelectric material, and a third metallization at the second area for defining the surface acoustic wave filter integrating the second piezoelectric material.

Abstract: The invention relates to an adjustable resonator filter, which has a casing made up of a bottom, walls and a lid, which casing functions as a ground for a transmission path, which is divided with conductive partitions into resonator cavities, and on the transmission path of the resonator filter there is a coupling opening in the partitions separating subsequent cavities. In the casing there is by at least one partition a coupling space, which is open into both resonator cavities separated by the partition, which resonator filter has an inductive coupling member. This is arranged to extend through said coupling space into both resonator cavities. The inductive coupling member is in electric contact with the casing at least in one of the resonator cavities. In the coupling space there is a moveable conductive adjustment piece, which has a minimum position for the coupling and a maximum position for the coupling.

Abstract: A surface acoustic wave filter includes an arrangement of transducers having at least one first transducer one second transducer and one third transducer. The at least one first transducer is connected to the input terminal and a terminal for applying a reference potential. The second transducer is connected to the first output terminal and the terminal for applying the reference potential. The third transducer is connected to the second output terminal and the terminal for applying the reference potential. A capacitor is connected to at least one of a first and second output terminal in such a way that the capacitor is connected between the first and second output terminals or between one of the first and second output terminals and the terminal for applying the reference potential.

Abstract: A laminated balanced filter includes one unbalanced terminal, two balanced terminals, a ground terminal, an unbalanced-side LC parallel resonator, an intermediate LC parallel resonator, and a balanced-side inductor. The inductor electrode pattern of the balanced-side inductor includes a first portion extending from one end portion to a connection portion and a second portion extending from the other end portion to the connection portion. A direction of a current flowing through the first portion is opposite to a direction of a current flowing through the inductor electrode pattern of the intermediate LC parallel resonator. A direction of a current flowing through the second portion of the balanced-side inductor is the same as a direction of a current flowing through the inductor electrode pattern of the intermediate LC parallel resonator. The laminated balanced filter further includes a coupling capacitor connected between a balanced terminal connected to the first portion and an unbalanced terminal.

Abstract: An acoustic filter and method of acoustic filter manufacture provides a plurality of series acoustic resonators coupled in series on a first resonator substrate, a plurality of shunt resonators on a second resonator substrate, and a support substrate. The first and second resonator substrates are mounted on the support substrate. The filter further provides a plurality of electrical connections, wherein each respective electrical connection electrically couples a respective one of the plurality of shunt resonators to a respective one of the plurality of series acoustic resonators.

Abstract: A multi-mode filter for realizing wide-band is disclosed. The multi-mode filter includes a housing; a plurality of cavities formed in the housing; a plurality of resonators located in each of the cavities; at least one connector formed through a side wall of the housing; and at least one coupling element connected to the at least one connector in the cavities, the at least one coupling element coupling the at least one connector with at least one of the resonators respectively, wherein each of the at least one coupling element has “T” shape in view of front section and “L” shape in view of side section.