A radio-frequency device comprising (1) an input resonator configured to receive an input signal, (2) an output resonator configured to provide an output signal, and (3) a plurality of signal paths coupled between the input resonator and the output resonator, wherein each signal path included the plurality of signal paths comprises a bandpass filter that (A) is at least partially composed of a ceramic material and (B) has a bandpass center frequency different from every other signal path included in the plurality of signal paths. Various other apparatuses, systems, and methods are also disclosed.

A radio-frequency device comprising (1) an input resonator configured to receive an input signal, (2) an output resonator configured to provide an output signal, and (3) a plurality of signal paths coupled between the input resonator and the output resonator, wherein each signal path included the plurality of signal paths comprises a bandpass filter that (A) is at least partially composed of a ceramic material and (B) has a bandpass center frequency different from every other signal path included in the plurality of signal paths. Various other apparatuses, systems, and methods are also disclosed.

The present disclosure relates to an oscillator device (1, 1′, 1″, 1′″) comprising an active circuit device (2, 2′″), a circuit board (3) and a cavity resonator (4, 4′). The active circuit device (2, 2′″) comprises an amplifier unit (5), and the circuit board (3) comprises a first main side (6) and a 5 second main side (7), where the active circuit device (2, 2′″) is mounted to the first main side (6). The cavity resonator (4, 4′) is positioned on the second main side (7). The oscillator device (1) further comprises at least one excitation via connection (8) that runs through the circuit board (3) and electrically connects the active circuit device (2, 2′″) to an excitation structure (9) inside the cavity resonator (4, 4′).

The present disclosure relates to an oscillator device (1, 1′, 1″, 1′″) comprising an active circuit device (2, 2′″), a circuit board (3) and a cavity resonator (4, 4′). The active circuit device (2, 2′″) comprises an amplifier unit (5), and the circuit board (3) comprises a first main side (6) and a 5 second main side (7), where the active circuit device (2, 2′″) is mounted to the first main side (6). The cavity resonator (4, 4′) is positioned on the second main side (7). The oscillator device (1) further comprises at least one excitation via connection (8) that runs through the circuit board (3) and electrically connects the active circuit device (2, 2′″) to an excitation structure (9) inside the cavity resonator (4, 4′).

An apparatus for treating gaseous pollutant with plasma comprises a microwave source generating a microwave oscillation; a waveguide component coupled to the microwave source; and a resonant cavity coupled to the waveguide component, the microwave oscillation is substantially propagated toward a waveguide direction, the resonant cavity comprises a first chamber and a second chamber, the waveguide direction is substantially parallel to a reference axis defined in the first chamber, the first chamber has an inner wall surrounding the reference axis, the inner wall comprises a first inner wall obliquely inclined toward the reference axis and a second inner wall substantially parallel in respect to the reference axis relatively, an area of the first inner wall is larger than that of the second inner wall so that the first chamber has a tapered space, and the microwave oscillation interacts with an ignition gas in the second chamber to generate a torch.

The present invention relates to a cavity filter including: an RF signal connecting portion spaced apart, by a predetermined distance, from an outer member having an electrode pad provided on a surface thereof; and a terminal portion configured to electrically connect the electrode pad of the outer member and the RF signal connecting portion so as to absorb assembly tolerance existing at the predetermined distance and to prevent disconnection of the electric flow between the electrode pad and the RF signal connecting portion, wherein a part of the terminal portion, positioned between the electrode pad and the RF signal connecting portion, is elastically deformed to absorb assembly tolerance existing in a terminal insertion port. Therefore, the cavity filter can efficiently absorb assembly tolerance which occurs through assembly design, and prevent disconnection of an electric flow, thereby preventing degradation in performance of an antenna device.

A system comprises: a radio frequency (RF) resonator comprising a cavity and a tuning element, the cavity having at least one port, and the tuning element having a length inside the cavity; a processor; a spectrum analyzer coupled to the at least one port, the spectrum analyzer to provide to the processor values of a resonance parameter, the resonance parameter indicative of a resonant wavelength of the RF resonator; and an automotive steering mechanism coupled to the tuning element.

A system comprises: a radio frequency (RF) resonator comprising a cavity and a tuning element, the cavity having at least one port, and the tuning element having a length inside the cavity; a processor; a spectrum analyzer coupled to the at least one port, the spectrum analyzer to provide to the processor values of a resonance parameter, the resonance parameter indicative of a resonant wavelength of the RF resonator; and an automotive steering mechanism coupled to the tuning element.

A plasma processing apparatus includes a chamber providing a substrate processing space, a conductive upper shower head providing a plurality of gas holes and provided above the substrate processing space, a conductive lower shower plate providing through holes connected to the substrate processing space and provided under the upper shower head and above the substrate processing space, an electromagnetic wave introduction part formed of a dielectric material, a waveguide extending in the circumferential direction to surround the upper shower head and the electromagnetic wave introduction part and connected to the electromagnetic wave introduction part, and a coaxial line including a central conductor and an outer conductor and provided to supply electromagnetic waves to the waveguide. The coaxial line extends away from the central axis. The central conductor is connected to a wall surface that defines the waveguide at a position away from the central axis.

A solid-state direct cavity combiner (DCC) transmitter system for providing megawatts of power is featured. The system includes a resonant cavity including at least one high-power output transmission line, hundreds of high-power transistors each generating an amount of RF power input directly into the resonant cavity, and a plurality of modules each including at least one pair of high-power transistors differentially driving a transmission line and a coupling loop. Each said transmission line and coupling loop extends into the resonant cavity to match an impedance of each said high-power transistors of each said module to an impedance of said resonant cavity to electromagnetically couple power into the resonant cavity to provide the megawatts of power to the high-power output transmission line.