Technology is described for vacuum electron device (e.g., sheet beam klystron) that includes a hollow tube structure. In one example, the hollow tube structure includes at least three resonant cavities and at least two drift tube sections. Each resonant cavity includes a cavity width along a major axis and a cavity height along a minor axis. Each drift tube section includes a drift tube section width and a drift tube section height, and the cavity height is greater than the drift tube section height. A first drift tube section is disposed between a first resonant cavity and a second resonant cavity. A second drift tube section is disposed between the second resonant cavity and a third resonant cavity. A drift tube section width of the first drift tube section is substantially different from a drift tube section width of the second drift tube section.

An exemplary cavity resonator has a resonant frequency and includes a conductive body containing a cavity and a plate attached to the body enclosing the cavity. The position of a conductive tuning mechanism that protrudes into the cavity affects the tuning of the resonant frequency of the cavity resonator. A portion of the enclosed cavity is made of a shape memory alloy (SMA) material that has been trained to have a coefficient of thermal expansion that results in dimensional changes of the portion as the temperature varies so that the dimensional changes produce changes in the resonant frequency that counteract the combined change in the resonant frequency due to dimensional changes with temperature associated with the other portions of the enclosed cavity made of materials other than SMA material. This results in a stable resonant frequency versus temperature characteristic.

Embodiments of the present disclosure perform incisions along the direction of the long axis of the waveguide, thereby exposing a trench structure which can be readily plated. Once divided and plated, the individual cut pieces can then be secured together to restore the original waveguide structure. In this fashion, multiple cut pieces can be secured together and used as “building blocks” to create a modular solution which can be used to provide a number of different customizable waveguide structures. Thus, embodiments of the present disclosure perform plating procedures in a less expensive manner while achieving the benefits of ganged waveguide structures. Moreover, embodiments of the present disclosure offer a modular approach to ganged waveguide design thereby allowing for end-user flexibility in testing.

A dielectric resonator, an assembly method thereof and a dielectric filter enable are provided. The dielectric resonator includes the dielectric resonant column, the metal cavity, a sealing cover plate and a tuning screw, wherein the dielectric resonant column is located in the metal cavity, the sealing cover plate is located on an upper end face of the metal cavity, and the tuning screw is located on the sealing cover plate. The dielectric resonator also includes an insulating fixed module located between the lower end face of the sealing cover plate and the upper end face of the dielectric resonant column, and the insulating fixed module is high enough to ensure that a pressure is formed between the sealing cover plate and the dielectric resonant column, so that the dielectric resonant column is fixed at the bottom of the metal cavity.

A dual-mode filter with a cross iris is provided. The cross iris is adjustable, and the dual-mode filter includes at least one resonator at both sides of the cross iris. The dual-mode filter includes tuning screws located on the cross iris in line with vertical and horizontal slots, changing a coupling level of the vertical and horizontal slots and changing a bandwidth. Minor design or production based errors are fixed by configuring the dual-mode filter with desired technical parameters.

A microwave resonator comprising a hollow tube comprising fan electrically conductive tube wall which defines a tube bore, the tube extending along a length axis from a first end to a second end; a first electrically conductive closing plate closing the first end of the tube; a second electrically conductive closing plate closing the second end of the tube; a plurality of dielectric resonant pucks, each puck comprising first and second end faces and a side wall extending therebetween, each puck being dimensioned such that its dominant mode is a doubly degenerate mode; the pucks being arranged within the tube bore spaced apart from each other and the closing plates, each puck being arranged with its end faces normal to the length axis and centered on the length axis and its side wall abutting the tube wall such that there is no air gap between the puck and tube wall which extends from one end face to the other of the puck, the puck adjacent to the first closing plate being termed the input puck; each puck being separated from the adjacent puck in the tube bore by a coupling gap, each coupling gap having ah electrically conductive iris plate arranged therein, each iris plate being arranged normal to the length axis, each iris plate comprising at least one coupling slot extending therethrough; an input microwave coupler adapted to receive a microwave signal and provide it to the input puck; each puck comprising a symmetry breaking structure for modifying the frequency of one of the degenerate modes relative to the other and the coupling between the two modes.

The disclosure discloses an irregular-shaped cavity multi-mode resonance structure and a filter with the resonance structure. The irregular-shaped cavity multi-mode resonance structure includes a cavity and a cover plate, wherein the cavity is internally provided with a dielectric resonance block and a dielectric support frame; at least one end face of the cavity is concave or convex, and at least one end face of the dielectric resonance block is convex or concave, the dielectric resonance block and the dielectric support frame form a triple-mode dielectric resonance rod; one end or any end of the cube-like dielectric resonance block is respectively connected with the dielectric support frame; the dielectric support frame is connected with an inner wall of the cavity; and the dielectric resonance block forms triple-mode resonance in three directions along the X, Y and Z axes of the cavity.

The dielectric resonator includes a sealing cover, a dielectric resonant column, a metal cavity, and an electrically-conductive elastic structure body. The dielectric resonant column is located within the metal cavity, wherein the sealing cover is connected to an upper surface of the dielectric resonant column. The sealing cover is located at the upper end face of the metal cavity and is configured to seal the metal cavity. The metal cavity is provided with a groove at the bottom. The electrically-conductive elastic structure body is located within the groove and is configured to support the dielectric resonant column. The depth of the groove causes a lower surface of the dielectric resonant column to be lower than an inner bottom surface of the metal cavity after the sealing cover seals the metal cavity. A lower end face of the dielectric resonant column is in contact with the electrically-conductive elastic structure body.

Disclosed herein are components for millimeter-wave communication, as well as related methods and systems.

Disclosed herein are components for millimeter-wave communication, as well as related methods and systems.