The present application provides a dielectric resonant structure for controlling harmonic distances, including a cavity, a support frame, a dielectric resonator and a cover plate, wherein the cavity is composed of a sealed space, and one surface of the cavity is a cover plate surface; the dielectric resonator is composed of a dielectric; the dielectric resonator is installed in the cavity; and the support frame is installed at any position between the dielectric resonator and an inner wall of the cavity, matches any shape of the dielectric resonator and the cavity, and is connected to, fixed with, and supported the dielectric resonator. The dielectric resonator is partially provided with a blind slot, a through slot, a blind hole or a through hole, or is provided with a protrusion on its surface, so as to change the span of frequency between a fundamental mode and the span of frequency high-order mode or between the high-order mode and a higher-order mode. When the set materials and dimensions of the cavity, the dielectric resonator and the support frame remain unchanged, most filters require the frequency of the high-order mode to be as far away from a passband as possible, so as to reduce the interference to a main passband. The dielectric resonator of the present application is capable of conveniently controlling harmonic distances of the filter and flexibly changing the attenuation performance outside the passband.

Embodiments of this application provide a dual-mode resonator, a filter, and a radio frequency unit. The dual-mode resonator includes a cavity and a dual-mode dielectric body coupled to an inner surface of the cavity. The dual-mode dielectric body includes a central part and four components that protrude from the central part, where the four components are disposed opposite to each other in pair and are in a cross shape. A first coupling groove and a second coupling groove are provided on the central part, where an extension direction of the first coupling groove is between two adjacent components, and an extension direction of the second coupling groove is between the other two adjacent components. The widths and/or the depths of the first and the second coupling grooves are different, and the extension direction of the first coupling groove and the extension direction of the second coupling groove are at a preset angle.

The disclosure discloses a concave triple-mode cavity resonance structure and a filter with the resonance structure. The structure comprises 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 and/or the dielectric response block is 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 connected with the dielectric support frame; the dielectric support frame is connected with an inner wall of the cavity; and the dielectric response block and the dielectric support frame form triple-mode resonance in three directions along the X, Y and Z axes of the cavity.

The disclosure provides a high-Q triple-mode cavity dielectric resonant hollow structure and a filter with the dielectric resonant structure. The structure includes a cavity and a cover plate, wherein the cavity is internally provided with a cube-like dielectric resonance block and a dielectric support frame; the cube-like dielectric resonance block and the dielectric support frame form a triple-mode dielectric resonance rod; air is arranged between the triple-mode dielectric resonance rod and an inner wall of the cavity; one end or any end of the cube-like dielectric resonance block is connected with the dielectric support frame respectively; the dielectric support frame is connected with an inner wall of the cavity; and the cube-like dielectric resonance block forms triple-mode resonance in directions of X, Y and Z-axes of the cavity.

A dual-mode dielectric resonator using two dissimilar modes is described, the dissimilar modes supported by a ridge waveguide resonator and a ¼-wavelength (¼λ) metalized cylindrical resonator within a single, metal-coated dielectric block. Each ridge waveguide resonator and cylindrical resonator form a dual-mode resonator pair. Coupling control posts set between the ridge waveguide resonator and cylindrical resonator can adjust their coupling. Multiple pairs of ridge waveguide/cylindrical resonators are fabricated in the same dielectric block to form a coupled resonator bandpass filter, including an 8-pole or 10-pole dielectric resonator filter, for 5G or other applications. Transmission zeros can be introduced by a metalized blind hole extending vertically between two ridge waveguide resonators or a microstrip extending between two dual-mode resonator pairs between which there exists no partial-width or full-width dielectric window.

A triple-mode dielectric resonator filter includes: a dielectric resonator positioned in a cavity of a housing and formed perpendicular to a longitudinal direction of the housing; a dielectric support coupled to the dielectric resonator through a bonding process and mounted and fixed by a fixing screw passing through a screw fixing mounting hole in the cavity of the housing and fixed to support the dielectric resonator at a predetermined height; and compensation blocks formed to protrude at regular intervals on a side surface of the dielectric resonator to allow the dielectric resonator to operate in three modes. A band pass filter composed of a dielectric resonator and an NRN stub achieves an improved insertion loss, high compression properties and a stable structure compared to a typical band pass filter using an NRN stub.

A superconducting input and/or output system employs at least one microwave superconducting resonator. The microwave superconducting resonator(s) may be communicatively coupled to a microwave transmission line. Each microwave superconducting resonator may include a first and a second DC SQUID, in series with one another and with an inductance (e.g., inductor), and a capacitance in parallel with the first and second DC SQUIDs and inductance. Respective inductive interfaces are operable to apply flux bias to control the DC SQUIDs. The second DC SQUID may be coupled to a Quantum Flux Parametron (QFP), for example as a final element in a shift register. A superconducting parallel plate capacitor structure and method of fabricating such are also taught.

The present disclosure presents a dual-channel filter based on a dielectric resonator, which includes a metal cavity, a dielectric resonator, two tuning metal probes, and four feeding metal probes. The dielectric resonator is disposed at the center of the metal cavity. The four feeding metal probes are disposed around the metal cavity, and coupled to the dielectric resonator. The two tuning metal probes are connected to the metal cavity, and respectively located at a central position directly above and below the dielectric resonator. The dual-channel filter integrates two channel filters with good isolation between them, and has two input ports and two output ports.

A multimode radio frequency resonator is provided. The multimode radio frequency resonator comprises: a monoblock of dielectric material having an initial shape that allows for multimode resonance, the initial shape comprising surfaces areas and edges between the surface areas. The multimode radio frequency resonator also comprises a conductive layer covering the whole surface of the monoblock, and a split chamfer disposed at one of the edges of the monoblock. The split chamfer includes two symmetrical cut-outs at the outer-most sides of the edge of the monoblock, and a central portion that is intact with respect to the initial shape of the monoblock and separates the symmetrical cut-outs. A method for tuning such a multimode radio frequency resonator is also described.

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.