A multi-mode filter with a resonator having a plurality of resonator bodies which are rectangular prisms and the filter being configured with a through hole that electrically connects an input and an output to the center of a coupling structure between a respective pair of slabs. The multi-mode filter further comprising a plurality of coupling aperture segments which are coupling structures between each pair of resonator bodies or slabs such that two triangular apertures at opposite corners of at least two different slab-cube interfaces are utilized with the triangular apertures being diagonally opposed to one another across the respective interface.

The present disclosure relates to a plug-in antenna device arranged to be received in a waveguide section. The plug-in antenna device includes one or more dielectric elements arranged in series and spaced apart by connecting members, a top-most dielectric element being arranged as antenna element. When the plug-in antenna device is received in the waveguide section, the dielectric elements are arranged electromagnetically coupled, whereby a radio frequency signal included in a radio frequency band passing to or from the antenna element via the dielectric elements is arranged to be electromagnetically filtered.

Some embodiments of the present disclosure provide a cavity high-Q triple-mode dielectric resonance structure and a filter with the resonance structure. The resonance structure includes a cavity and a cover plate, wherein an arrangement inside the cavity includes 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; between the triple-mode dielectric resonance rod and an inner wall of the cavity is air; one 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 the inner wall of the cavity; and the cube-like dielectric resonance block forms a triple-mode resonance in three directions of axes X, Y and Z of the cavity.

A dual-band filtering switch based on a single quad-mode dielectric resonator (DR) includes: a first printed circuit board (PCB) provided thereon with an input terminal; a second PCB provided thereon with an output terminal; a shielding shell arranged between the first and second PCBs and enclosing a shielding cavity together with the first and second PCBs; and a single quad-mode DR arranged in the shielding cavity. The first and second PCBs each include a feeding layer, a dielectric layer, and a ground layer that are stacked in sequence. The feeding layers of the first and second PCBs each include a microstrip line and a switching circuitry connected to the microstrip line, and the feeding layer is in contact with a surface of the DR to realize a switching function of the filtering switch. The proposed filtering switch feature low loss transmission and high selectivity with dual-band operation, miniaturization with the fewest resonators and friendly-integration, simultaneously.

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 present invention relates to a multi-mode filter comprising a carrier on which is mounted a dielectric resonator having a covering of an electrically conductive material in which there is provided an aperture and a coupling structure for coupling input signals to the dielectric resonator or for extracting filtered output signals from the dielectric resonator. The carrier is provided with an enclosing formation of electrically conductive material, which enclosing formation is electrically coupled to the electrically conductive covering of the dielectric resonator, such that the covering and the enclosing formation together form an electrically conductive enclosure for the dielectric resonator. The enclosure formed from the covering of the dielectric resonator and the enclosing formation increases the isolation of the filter and reduces leakage. The filter of the present invention is particularly suitable for use in cascaded resonator filter arrangements, and in duplex/diplex filters.

The present disclosure relates to a multi-type filter, and in particular, to a multi-type filter comprising: a cavity filter provided in any one (hereinafter, referred to as a “reference cavity”) among a plurality of cavities formed in a housing to be open to one side; and dielectric resonator filters respectively provided in at least two cavities adjacent to the reference cavity (hereinafter, referred to as “adjacent cavities”), wherein, to control the notch characteristics between the cavity filter and the at least two dielectric resonator filters according to windows formed by cutting of portions of partition walls between the reference cavity and the adjacent cavities to be in communication with each other, the windows are provided at different positions, which is advantageous in that the cross-coupling design is very easy without the need to include a metal crossbar and the like for separate notch formation.

The disclosure discloses an outwardly protruding triple-mode cavity resonance structure and a filter with the resonance structure. The structure includes a cavity (1) and a cover plate, wherein the cavity (1) is internally provided with a dielectric resonance block (2) and a dielectric support frame (3); at least one end face of the cavity (1) and/or the dielectric response block (2) protrudes outwards; the dielectric resonance block (2) and the dielectric support frame (3) form a triple-mode dielectric resonance rod; one end or any end of the cube-like dielectric resonance block (2) is connected with the dielectric support frame (3); the dielectric support frame (3) is connected with an inner wall of the cavity (1); and the dielectric response block (2) forms triple-mode resonance in three directions along the X, Y and Z axes of the cavity.

A resonator apparatus, a filter apparatus as well as a radio frequency and microwave device are disclosed. According to an embodiment, the resonator apparatus comprises an electrically conductive case and a dual-mode dielectric resonator provided in the electrically conductive case. The dual-mode dielectric resonator comprises a first dielectric block having a shape of a columnar body whose cross section is a cruciform. A mode coupling structure for coupling two resonant modes of the dual-mode dielectric resonator is provided in the columnar body. A bottom face of the columnar body is supported by an inner face of the electrically conductive case or by a supporting member provided on the inner face of the electrically conductive case. In at least one extending direction of a first extending direction and a second extending direction of the cruciform which are perpendicular to each other, lateral end faces of the columnar body are spaced apart from inner faces of the electrically conductive case.

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.