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 (15) comprising an amplifier unit (16) and a tunable waveguide resonator (1) which in turn comprises a rectangular waveguide part (2) having electrically conducting inner walls (3) and a first waveguide port (4). The amplifier unit (16) is arranged to be electrically connected to the waveguide resonator (1) via the first waveguide port (4) by means of a first connector (17). The waveguide resonator (1) comprises at least one tuning element (6) positioned within the waveguide part (2), wherein each tuning element (6) comprises an electrically conducting body (7) and a holding rod (8a, 8b). The holding rod (8a, 8b) is attached to the electrically conducting body (7) and is movable from the outside of the waveguide resonator (1) such that the electrically conducting body (7) can be moved between a plurality of positions within the waveguide part (2) by means of the holding rod (8a, 8b).

The invention relates to the field of microwave emitting equipment, in particular to microwave oscillators. The proposed variants of an oscillator and a matrix-type microwave oscillator enable to efficiently direct microwave radiation from one or more microwave sources and sum up microwave radiations, thus ensuring high values of efficiency and output power, superior functional capabilities of the device, a high degree of synchronization of radiations emitted by said microwave sources. The microwave oscillator comprises a microwave source and a resonator with a microwave channel made therein. The resonator comprises a box and a base electrically connected to each other, while the microwave channel accommodates a suppressing means for suppressing a back wave. The matrix-type oscillator comprises a plurality of said microwave oscillators electrically connected to each other.

A fixed-geometry probe for exchanging microwave energy with a cavity resonator is easy to manufacture, reliable and readily adjustable external to the cavity to select a coupling coefficient. The probe includes a transmission line that enters, turns and exits the cavity resonator. A first end of the transmission line lies outside the cavity resonator for connection to a microwave circuit to exchange microwave energy. A portion of the transmission line's outer conductor(s) is removed within the cavity resonator to form a fixed-geometry radiating element to exchange microwave energy with the cavity resonator in accordance with the coupling coefficient. The line's outer conductor is connected to the cavity resonator on either side of the radiating element. A second end of the transmission line is terminated outside the cavity resonator with a terminating impedance creating a mismatch with the line's characteristic impedance to create a reflective stub. The coupling coefficient is controlled by the length of the reflective stub and terminating impedance.

A small-size high-power terahertz oscillator achieves a stable oscillation in a terahertz frequency band even at room temperature. The high-power terahertz oscillator has a structure in which a bow-tie antenna is disposed on a substrate, a cavity resonator, which includes two cavities, is disposed at a power supply portion of the bow-tie antenna, and a resonant tunneling diode (RTD) is disposed along a bottom of a wall of the cavity resonator, which defines the two cavities, and stably oscillates waves in the terahertz frequency band at room temperature by using the RTD, the bow-tie antenna and the cavity resonator.

[Problem]

An object of the present invention is to provide a small-size high-power terahertz oscillator that achieves a stable oscillation in a terahertz frequency band even at a room temperature.

[Means for solving the problem]

The present invention is the high-power terahertz oscillator that has a structure in which a bow-tie antenna is disposed on a substrate, a cavity resonator which includes two cavities is disposed at a power supply portion of the bow-tie antenna and a RTD is disposed along a bottom of a wall of the cavity resonator which defines the two cavities, and stably oscillates waves in the terahertz frequency band at room temperature by using the RTD, the bow-tie antenna and the cavity resonator.

The present disclosure relates to an oscillator device (15) comprising an amplifier unit (16) and a tunable waveguide resonator (1) which in turn comprises a rectangular waveguide part (2) having electrically conducting inner walls (3) and a first waveguide port (4). The amplifier unit (16) is arranged to be electrically connected to the waveguide resonator (1) via the first waveguide port (4) by means of a first connector (17). The waveguide resonator (1) comprises at least one tuning element (6) positioned within the waveguide part (2), wherein each tuning element (6) comprises an electrically conducting body (7) and a holding rod (8a, 8b). The holding rod (8a, 8b) is attached to the electrically conducting body (7) and is movable from the outside of the waveguide resonator (1) such that the electrically conducting body (7) can be moved between a plurality of positions within the waveguide part (2) by means of the holding rod (8a, 8b).

A phased locked loop (PLL) having a filter output voltage that is limited to a fraction of the voltage range accepted by the tuning port of a voltage-controlled oscillator (VCO) under control and a control system responsive to the filter output voltage and for summing the filter output voltage with an elevator voltage and applying the summed voltage to the VCO tuning port.

The invention relates to the field of microwave emitting equipment, in particular to microwave oscillators. The proposed variants of an oscillator and a matrix-type microwave oscillator enable to efficiently direct microwave radiation from one or more microwave sources and sum up microwave radiations, thus ensuring high values of efficiency and output power, superior functional capabilities of the device, a high degree of synchronization of radiations emitted by said microwave sources. The microwave oscillator comprises a microwave source and a resonator with a microwave channel made therein. The resonator comprises a box and a base electrically connected to each other, while the microwave channel accommodates a suppressing means for suppressing a back wave. The matrix-type oscillator comprises a plurality of said microwave oscillators electrically connected to each other.

A high frequency oscillator has a high frequency generation part, an oscillation part, a matching unit, rectification element parts and switch parts. The oscillation part oscillates high frequency power generated by the high frequency generation part. The matching unit is arranged between the high frequency generation part and the oscillation part, and has one or more capacitors and matching circuits having difference characteristics so as to perform matching between the high frequency generation part and the oscillation part. The rectification element parts and the matching circuits are arranged in one-to-one correspondence. The rectification element parts rectify high frequency power supplied from the high frequency generation part to the oscillation part. The switch part is connected to the corresponding rectification element part to switch the corresponding capacitor connected to the corresponding matching circuit through the corresponding rectification element part.