A temperature-compensating device for a solid-state oscillator, wherein a part of the conductive walls constituting a cavity resonator is formed by a movable plate, the movable plate is fixed to one end of a dielectric rod with a high coefficient of linear expansion, and the other end of said rod is fixed to an extension of said cavity resonator.

A solid-state oscillator which includes a reentrant cavity resonator having a resonant cavity and a post member insulated in a DC sense from a wall portion of said resonant cavity, a solid-state oscillating element disposed at the position of the highest high-frequency voltage within said reentrant cavity resonator whereby an oscillating frequency is greatly varied by changing the DC bias voltage to be applied to said element.

A temperature compensated cavity for a solid state oscillator in which part of the conductive plates forming the cavity resonator is constituted by a movable plate, said movable plate being secured to one end of a dielectric rod having a large coefficient of linear expansion, the end of which is supported extensibly, and the other end of which is secured to the extended part of said cavity resonator.

A stabilized solid-state oscillator comprising a free running oscillator with its frequencies made variably by a variable reactance element, a high-Q fundamental cavity resonator coupled to the output line of the free running oscillator for controlling the oscillation frequency by phase locking and a diode phase detector coupled with the same output line; characterized in that variations of the oscillation frequency are detected as the amount of phase variations of the wave reflected from the fu...

An active device comprises an IMPATT diode arranged on a heat sink block, a coaxial cavity resonator whose inner conductor of coaxial line is the supply means for supplying a DC bias to the oscillator element, a resonance circuit formed of that part of the inner conductor which is around the oscillator element, a step waveguide to which an output from the resonance circuit is transmitted through an output coupling part formed of the inner conductor and the outer wall of the coaxial cavity resona...

Microwave heating apparatus comprising a fan beam radiator exhibiting a pattern of microwave radiation which is concentrated in the angular direction and less concentrated in the radial direction with respect to a shaft set substantially at the center of an oven and rotating a microwave beam and an article to-be-heated relative to each other, thereby to uniformly heat the article by applying the rotating beam.

A microwave integrated circuit device for reception wherein a microwave integrated circuit substrate is mounted on a short-circuited plane of an inner surface of a waveguide, a rectangular groove is provided in the short-circuited plane, and a mixer diode is arranged astride the groove.

A temperature compensated dielectric resonator device is composed of a dielectric resonator element mounted on a micro-integrated circuit (MIC) plane. A screw is provided for manually regulating the frequency of the device and a supporting member supporting the screw is disposed in vicinity of the element. The supporting member dimensions and materials are predetermined, so that the screw may be held at such a position that it compensates for a resonant frequency shift caused by thermal expansio...

A dielectric heating device for heating a dielectric sandwiched between a pair of electrodes is disclosed in which an oscillation circuit is made up of the above-mentioned electrodes, a coil connected in series with the electrodes, a first capacitor connected in parallel with a series circuit made up of the electrodes and the coil, another series circuit connected in parallel with the first capacitor and made up of second and third capacitors and a field effect transistor having source and drain...

A high-power solid-state oscillator comprising a cavity resonator, a conductive plate positioned in said cavity resonator and in a plane perpendicular to the electric field in said cavity resonator and bisecting said cavity resonator, and at least two solid-state oscillating elements symmetrically positioned respectively on opposite surfaces of said conductive plate and positioned in a plane perpendicular to the axis of said cavity resonator.