Abstract: A resonator assembly comprising a resonant member within a conductive resonator cavity is disclosed. The resonant member extends from a first inner surface of the resonator cavity towards an opposing second inner surface. A main portion of the resonant member has a substantially constant first cross sectional area. A cap portion of the resonant member extending from the main portion towards the opposing second inner surface has a progressively increasing cross sectional area increasing from the first cross sectional area adjacent to the main portion to a larger cap cross sectional area at an end of the resonant member, the larger cap cross sectional area being at least 1.i times as large as the first cross sectional area. The resonant member may also have a flared section at the other end giving the resonant member an hour glass type shape.

Abstract: A filter apparatus includes a first conductive signal line configured to form a first radio frequency resonator; a second conductive signal line configured to form a second radio frequency resonator; a cross-coupling element comprising a first electrode arranged to couple capacitively to the first conductive signal line, a second electrode arranged to couple capacitively to the second conductive signal line, and an electrically conductive signal line coupling the first electrode to the second electrode. The cross-coupling element is bendable with respect to the first conductive signal line and the second conductive signal line to adjust the capacitive coupling.

Abstract: A method has been described for making an electrical structure having an air dielectric and includes forming a first subunit including a sacrificial substrate, an electrically conductive layer including a first metal on the sacrificial substrate, and a sacrificial dielectric layer on the sacrificial substrate and the electrically conductive layer. The method further includes forming a second subunit including a dielectric layer and an electrically conductive layer thereon including the first metal, and coating a second metal onto the first metal of one or more of the first and second subunits. The method also includes aligning the first and second subunits together, heating and pressing the aligned first and second subunits to form an intermetallic compound of the first and second metals bonding adjacent metal portions together, and removing the sacrificial substrate and sacrificial dielectric layer to thereby form the electrical structure having the air dielectric.

Abstract: A coaxial cavity resonator filter has a hollow cavity and a post having desired dimensions for achieving desired filter characteristics. A tuning element is supported within a metallic opening and is configured to electromagnetically interact with the post. The tuning element has a conductive core element where the orientation of the tuning element with the cavity is adjusted so as to achieve the desired filter characteristic. An insulator is configured to cover a portion of the conductive core element of the tuning element, at a location where the tuning element and the metallic opening interact. A portion of the insulator is threaded so as to allow the conductive core element vary its orientation within the cavity without contacting the metallic opening.

Abstract: A signal transmission cable including a high-Q value band-elimination filter includes a first signal line conductor pattern including a first capacitor conductor portion and an inductor conductor portion on a first base layer. The first capacitor conductor portion includes a flat conductor, and the inductor conductor portion has a spiral shape. A second signal line conductor pattern including a second capacitor conductor portion is provided on a second base layer. The inductor conductor portion constitutes an inductor, and the first and second capacitor conductor portions and the first base layer constitute a capacitor. The inductor and the capacitor are connected in parallel by transmission conductor portions on the first and second base layers and an interlayer-connector conductor on the first base layer.

Abstract: A waveguide filter for the transmission of an RF signal comprising a plurality of blocks of dielectric material coupled together in a combined side-by-side and stacked relationship. Each of the blocks defines resonators and includes an exterior surface that is covered with a layer of conductive material and defines internal layers of conductive material with the blocks coupled together. The internal layers of conductive material include regions devoid of conductive material that define internal windows for the transmission of the RF signal between resonators in the side-by-side and stacked blocks. The internal layers of conductive material also include regions devoid of conductive material that define isolated pads of conductive material for the indirect transmission of the RF signal between resonators in the stacked blocks.

Abstract: A coaxial filter is provided. The coaxial filter comprises a first port, a second port, at least two capacitor segments each having two metal layers and a dielectric layer between them, and at least one grounded inductor stub connected to a metal layer of the at least two capacitor segments. The at least two capacitor segments are coaxially connected in series between the first port and the second port. An axis of the at least one grounded inductor stub is vertical to an axis of the at least two capacitor segments.

Abstract: The present invention provides filter assemblies, tuning elements and a method of tuning a filter. A filter assembly includes a housing having a top cover, a bottom cover and at least one sidewall, the top cover, the bottom cover and the at least one sidewall defining an internal cavity, the housing configured to receive first through third radio frequency (“RF”) transmission lines; a top metal sheet mounted within the internal cavity that has a plurality of openings that form a first hole pattern; and a bottom metal sheet mounted within the internal cavity that has a plurality of openings that form a second hole pattern. The top and bottom metal sheets are vertically spaced-apart from each other in a vertically stacked relationship within the internal cavity. The top metal sheet and the bottom metal sheet each include at least one resonator.

Abstract: A common mode filter suppressing a reflection of a common mode noise and sufficiently removing the common mode noise of 2 GHz or less includes: a signal coil spirally formed in a dielectric layer of a multilayer structure, and serially inserted and connected to one of the differential signal lines; a signal coil inserted and connected to the other differential signal line and formed in the dielectric layer so as to face the signal coil through the dielectric layer; a control coil formed in the dielectric layer so as to be sandwiched between the first and second signal coils interposing the dielectric layer and wound in the same direction as the signal coil; and an embedded resistor connected to at least one of an outer peripheral end or an inner peripheral end of the control coil, thus forming a feedback loop circuit by the control coil and the embedded resistor.

Abstract: One or more embodiments of the present invention describe an apparatus and method to combine unequal powers. The apparatus includes a first input port, a second input port, and a combiner. The first input port is operably connected to a first power amplifier and is configured to receive a first power from the first power amplifier. The second input port is operably connected to a second power amplifier and is configured to receive a second power from the second power amplifier. The combiner is configured to simultaneously receive the first power from the first input port and the second power from the second input port. The combiner is also configured to combine the first power and second power to produce a maximized power. The first power and second power are unequal.

Abstract: A filter can be used in circuit. The filter includes a first stage including a first resonator configured to oscillate at a first fundamental frequency, a second resonator configured to oscillate at a second fundamental frequency, and a first nonlinear coupler for the first resonator and the second resonator. The second fundamental frequency being one half of the first fundamental frequency. The filter also includes a second stage including a third resonator, a fourth resonator, and a second nonlinear coupler for the third resonator and the fourth resonator.

Abstract: A filter includes shunt circuits coupled between a reference node and each of an input port, an output port, a first node, and a second node. Resonant networks are coupled between the input port and the second node, and between the first node and the output port. Storage element circuits are coupled between the input port and the first node, and between the second node and the output port. The shunt circuits have an equivalent shunt circuit frequency response that partly defines a high passband frequency of the filter, the resonant networks have an equivalent resonant network frequency response that partly defines a low passband frequency of the filter, and the storage element circuits have an equivalent storage element circuit frequency response that defines a stopband frequency of the filter between the low passband frequency and the high passband frequency.

Abstract: An apparatus includes a top conductive layer of on an integrated circuit waveguide filter and a bottom conductive layer. The top and bottom conductive layers are coupled via a plurality of couplers that form an outline of the waveguide filter. A dielectric substrate layer is disposed between the top conductive layer and the bottom conductive layer of the integrated circuit waveguide filter. The dielectric substrate layer has a relative permittivity, ?r that affects the tuning of the integrated circuit waveguide filter. At least one tunable via includes a tunable material disposed within the dielectric substrate layer and is coupled to a set of electrodes. The set of electrodes enable a voltage to be applied to the tunable material within the tunable via to change the relative permittivity of the dielectric substrate layer and to enable tuning the frequency characteristics of the integrated circuit waveguide filter.

Abstract: A composite electronic component includes: a power stabilization unit including a capacitor and an inductor connected to each other in series and configured to rectify input voltage to generate output voltage; and a switch unit including a first switch connected to the capacitor in parallel and a second switch connected to the inductor in parallel.

Abstract: A tubular resonant filter comprises a multilayer sheet in a rolled configuration comprising multiple turns about a longitudinal axis, where the multilayer sheet includes a strain-relieved layer, a patterned first conductive layer on the strain-relieved layer, an insulating layer on the patterned first conductive layer, and a patterned second conductive layer on the insulating layer and the patterned first conductive layer. The patterned first and second conductive layers and the insulating layer are interrelated to form a rolled-up inductor connected to a rolled-up capacitor on the strain-relieved layer.

Abstract: A device that filters electromagnetic interference includes electrical conductors mounted in parallel. Each conductor includes a first coil positioned between a first and a second end of the respective conductor. Each first coil is coupled magnetically to each other first coil and has the same number of turns as each other first coil. The first and second ends of each of the conductors, respectively, are first and second terminals for the device. The device includes capacitors. Each capacitor is mounted between the second end of a corresponding electrical conductor and a third terminal of the device. The device includes an additional circuit. The additional circuit includes a second coil coupled magnetically with the first coils of the conductors. The additional circuit includes an additional coil. The second coil has a second number of turns.

Abstract: An LC parallel resonator includes a plurality of dielectric layers stacked on top of one another, a capacitor electrode, and an inductor electrode. The inductor electrode defines a loop including a connection point, as a start point, connected to the capacitor electrode. The inductor electrode includes a first line electrode, first via electrodes, and second via electrodes. The first line electrode extends in a direction perpendicular or substantially perpendicular to a stacking direction of the dielectric layers. The first via electrodes arranged in parallel or substantially in parallel with one another extend in the stacking direction of the dielectric layers, and connect the capacitor electrode to the first line electrode. The second via electrodes arranged in parallel or substantially in parallel with one another extend in the stacking direction of the dielectric layers and are connected to the first line electrode.

Abstract: A front-surface-side 3-terminal capacitor and a rear-surface-side 3-terminal capacitor are disposed respectively on a front surface and a rear surface of a circuit substrate at opposing positions. A first outer terminal and a second outer terminal of the front-surface-side 3-terminal capacitor are electrically connected to hot-side conductor patterns and, respectively. Third outer terminals and of the rear-surface-side 3-terminal capacitor are electrically connected to ground-side conductor patterns and, respectively. Third outer terminals and of the front-surface-side 3-terminal capacitor are electrically connected to a first outer terminal and a second outer terminal of the rear-surface-side 3-terminal capacitor by employing vias and, respectively. The front-surface-side 3-terminal capacitor and the rear-surface-side 3-terminal capacitor are thereby electrically connected in series.

Abstract: Systems and methods for mode suppression in a cavity are provided. In certain implementations, an apparatus comprises a cavity for propagating electromagnetic signals therein, wherein the electromagnetic signals propagate multiple times through the cavity; and an absorbing material applied to a first side of the cavity, wherein the absorbing material absorbs the electromagnetic signals. Further, an apparatus includes at least one transmitting antenna configured to couple electromagnetic energy into the cavity; and at least one receiving antenna configured to couple electromagnetic energy from the cavity.

Abstract: An electronic apparatus case including: a circuit board provided on a lower case, the circuit board having a plurality of signal lines in parallel, each specified area of the circuit board between each adjacent pair of the plurality of signal lines having a plurality of first through holes and a plurality of second through holes, the plurality of first and second through holes respectively being arranged in a first and a second lines at substantially equal interval of ? or less of a wavelength of signals propagating in the plurality of signal lines, the first line and the second line being arranged in parallel, each center of each of the plurality of first through holes and each center of each of the plurality of second through holes being shifted with a gap in a direction of the first line and the second line.