Abstract: Communications devices, triplexers, high-pass filters, and low-pass filters are disclosed. A communications device includes a triplexer having a common port and first, second, and third branch ports. A hybrid LC/SAW high-pass filter is connected between the common port and the third branch port, a hybrid LC/SAW low-pass filter is connected between the common port and an internal node, an LC high-pass filter is connected between the internal node and the second branch port, and an LC low-pass filter is connected between the internal node and the first branch port.

Abstract: A filter assembly in a multi-layer printed wiring board. One or more conductors is formed on an internal layer of a printed wiring board. Surrounding dielectric layers and ground layers form, together with the conductors of the internal layer, microstrip or stripline transmission lines and distributed element filters. The filter assembly may include a plurality of internal conductive layers, each sandwiched between dielectric layers and ground layers, and each internal layer may include a plurality of distributed element filters. Connections from each filter to the surface of the filter assembly are formed by vias, and connections from the surface of the filter assembly to a host board are formed by solder joints.

Abstract: Metal-oxide-metal (MOM) type capacitors include a first terminal configured to receive a first voltage, the first terminal being formed on a first dielectric layer; a first set of fingers formed on the first dielectric layer, the first set of fingers being coupled to the first terminal via a conductive trace formed on a second dielectric layer; a second terminal configured to receive second voltage, the second terminal being formed on the first dielectric layer; and a second set of fingers formed on the first dielectric layer, the second set of fingers being coupled to the second terminal, wherein the fingers of the second set are interspersed with the fingers of the first set.

Abstract: An elastic wave device includes a first elastic wave resonator unit including a first IDT electrode and a second elastic wave resonator unit including a second IDT electrode and satisfies Wc<(Wa+Wb), where Wa is a dimension of a high acoustic velocity region on a first busbar side in a direction along which electrode fingers extend in the first IDT electrode, Wb is a dimension of a high acoustic velocity region on a fourth busbar side in the direction along which the electrode fingers extend in the second IDT electrode, and Wc is a dimension of an inter-stage connection portion.

Abstract: A micro-resonator employs a lid-integrated electrode to one or more of drive, sense and tune a vibrational resonant mode of a microelectromechanical systems (MEMS) resonator. The micro-resonator includes a lid attached to a base that provides a resonator cavity. The micro-resonator further includes the MEMS resonator extending from a surface of the base toward the lid within the resonator cavity. The lid-integrated electrode extends vertically from the lid into the resonator cavity toward the base. The vertically extending, lid-integrated electrode is positioned spaced from and adjacent to a side of the MEMS resonator to one or more of drive, sense and tune mechanical movement of the MEMS resonator.

Abstract: A multiplexer (MUL) having fewer intermodulation products is specified. For this purpose, the multiplexer (MUL) comprises a transmit and/or receive filter (Tx, Rx), which operates with acoustic waves, and blocker electrodes (EL1, EL2) for diverting undesired frequency components to ground (GND). The blocker electrodes (EL1, EL2) are arranged in this case on the same chip (CH) as the filter which operates with acoustic waves.

Abstract: A multiplexer includes a n number (n is an integer equal to three or more) of filters that are individually provided in the n number of paths commonly connected at a common junction point, and that have different pass bands from one another. In the multiplexer, (n?1) filters among the n number of filters except for the first filter have impedances of which imaginary components cancel each other at a pass band frequency of the first filter when viewed from the common junction point in a state of the n number of paths being not commonly connected.

Abstract: An electronic device such as a set top box is provided having a vertical chassis wall having an aperture; a horizontal circuit board that extends toward the vertical chassis wall; F-connector connected to the horizontal circuit board, either under or over the board, and extending out of the a vertical chassis wall through the aperture; and inner shield, which can generally be used to contain/shield the RF circuit components mounted on the PCB, on the interior side of the vertical chassis wall and connected to the F-connector on or under the horizontal circuit board, wherein the inner shield comprises a series of vertical peripheral walls that surround components (either under or over the board); and a shield cover that covers the inner shield, the shield cover comprises a top portion that runs along or extends horizontally and side portions that extend from the periphery of the top portion and downward to overlap a part of the shield wall.

Abstract: A device is provided that includes a first waveguide configured to guide propagation of RF waves inside the first waveguide. A first side of the first waveguide is configured to emit an evanescent field associated with the propagation of the RF waves inside the first waveguide. The device also includes a second waveguide having a second side positioned within a predetermined distance to the first side of the first waveguide. The second waveguide is configured to guide propagation, inside the second waveguide, of induced RF waves associated with the evanescent field from the first waveguide. The device also includes a first probe coupled to the first waveguide and configured to emit the RF waves for propagation inside the first waveguide. The device also includes a second probe coupled to the second waveguide and configured to receive induced RF waves propagating inside the second waveguide.

Abstract: In a high-frequency module, a phase and amplitude of a high-frequency signal from a connection conductor between filter devices change due to the signal being transmitted by a takeout circuit unit. When the high-frequency signal at a third external connection terminal is a suppression signal and a high-frequency signal passing through the first filter circuit is a suppression-target signal, the transmission distance in the takeout circuit unit is such that the phase of the suppression signal is approximately inverted with respect to the phase of the suppression-target signal and the suppression signal has approximately the same amplitude as the suppression-target signal. The suppression signal is mixed with the suppression-target signal and components outside of the pass band are cancelled out and the attenuation characteristics of the filter circuit are enhanced.

Abstract: A system and method are provided that use RF energy to enhance the extraction of oil and gas from hydrocarbon bearing strata. A three-dimensional underground electromagnetic array is used to guide RF energy to where that energy is converted to heat in the hydrocarbon bearing strata. The three dimensional underground electromagnetic array is a guided wave structure, as opposed to an antenna structure, to minimize the unwanted effects of the near fields associated with antennas. In one embodiment, the legs of the three-dimensional underground electromagnetic array are composed of production well pipe.

Abstract: An apparatus for hydrocarbon resource recovery from a subterranean formation includes a radio frequency (RF) source, an RF antenna to be positioned within the subterranean formation to deliver RF power to the hydrocarbon resource within the subterranean formation, and an RF transmission line extending between the RF source and the RF antenna. The RF transmission line may include RF transmission line sections coupled together in end-to-end relation. Each section may include an inner conductor, an outer conductor surrounding the inner conductor, and an outer load-carrying tubular member surrounding the outer conductor. A respective coupling assembly joins ends of adjacent sections together. Each coupling assembly may include an electrical coupler being fixedly connected to first ends of corresponding inner and outer conductors and being slidably connected to opposing second ends of adjacent inner and outer conductors, and a mechanical coupler connecting ends of adjacent load-bearing tubular members together.

Abstract: A cavity filter and a RF communication device including the cavity filter are disclosed. The cavity filter includes a cavity body, a cover plate, a resonance rod, a tuning screw, and a supporting member. The cover plate caps the cavity body to form a resonance cavity. The resonance rod is a tube with an opening at one end, where the opening end is combined with the cover plate or the cavity body. The supporting member is mounted to the cover plate or the cavity body to further secure the tuning screw to the resonance rod, and pushes the tuning screw along an axial direction of the resonance rod against the bottom end of the resonance rod, so as to make the resonance rod undergo an elastic deformation and thus adjust the RF parameters of the cavity filter.

Abstract: Aspects of the subject disclosure may include, for example, a coupling device including a receiving portion that receives a radio frequency signal conveying data from a transmitting device. A magnetic coupler magnetically couples the radio frequency signal to a transmission medium as a guided electromagnetic wave that is bound by an outer surface of the transmission medium. A cap includes a dielectric portion that secures the transmission medium adjacent to the magnetic coupler and a reflective plate that reduces electromagnetic emissions from the magnetic coupler. Other embodiments are disclosed.

Abstract: An electronic component includes a spiral or substantially spiral first inductor extending along a stacking direction while turning around a ring-shaped or substantially ring-shaped path. The first inductor includes first inductor conductors and a first interlayer connecting conductor connected to each other. The first interlayer connecting conductor passes through some insulating layers. A second interlayer connecting conductor passes through some insulating layers, and is connected in series and is located within the ring-shaped path. A first capacitor conductor is disposed closer to one side of the stacking direction than the first inductor is. The first capacitor conductor is at least partially superposed on the ring-shaped path to define a first capacitor between the first capacitor conductor and the first inductor, and is superposed on a portion of a region surrounded by the ring-shaped path to be connected to the second interlayer connecting conductor.

Abstract: Methods of designing band-pass filters are disclosed. A baseline filter design is established, the baseline filter design including a plurality of surface acoustic wave resonators having respective resonant frequencies, the surface acoustic wave resonators organized by resonant frequency into two or more groups. One or more alternative filter designs are established, each alternative filter design derived from the baseline filter design by reordering the resonant frequencies of two or more surface acoustic wave resonators within at least one of the two or more groups. A respective performance metric related to input impedance over a pass band is calculated for each of the baseline filter design and the alternative filter designs. A final filter design is selected from the baseline filter design and the alternative filter designs based on the respective performance metrics.

Abstract: A multilayer electronic component includes a body including a dielectric layer and/or a magnetic layer, a terminal part including an input terminal, an output terminal, and a ground terminal connected to the body, and a filter part including a coil part disposed in the body and a capacitor part connected to the coil part and filtering a high frequency component of an input signal input to the input terminal. The capacitor part includes a plurality of first internal electrodes connected to the coil part and a plurality of second internal electrodes exposed to an exterior of the body.

Abstract: A spur cancelling, electromechanical filter includes a first resonator having a first resonant frequency and one or more first spurious responses, and it also includes, electrically connected to the first resonator, a second resonator having a second resonant frequency and one or more second spurious responses. The first and second resonant frequencies are approximately identical, but the first resonator is physically non-identical to the second resonator. The difference between the resonators makes the respective spurious responses different. This allows for filters constructed from a cascade of these resonators to exhibit reduced spurious responses.

Abstract: A filter unit of a high-frequency module includes a plurality of SAW resonators connected in series between a first series connection terminal and a second series connection terminal, first shunt connection terminals, a second shunt connection terminal, and a plurality of SAW resonators. A connection line interconnecting the SAW resonators is connected to the first shunt connection terminal through one of the SAW resonators. The first shunt connection terminal is connected to a ground through an inductor. A matching circuit is connected between the second series connection terminal and a second external connection terminal. The matching circuit is inductively or capacitively coupled to the inductor.

Abstract: A circularly polarized wave generator includes a rectangular hollow waveguide (1), a plurality of first protrusions (2) that are provided on one pair of opposing wall surfaces in the waveguide (1), have longitudinal directions orthogonal to an axial direction of the waveguide (1), and are arranged at intervals along the axial direction, and a plurality of second protrusions (3) that are provided between the first protrusions (2) on the wall surfaces and are arranged with longitudinal directions thereof running along the axial direction.