A filter structure and a filter device provided by the present application relate to the technical field of electronic devices. The filter structure includes: a shielding component, which includes a first shielding layer and a second shielding layer, which are arranged opposite each other at an interval; at least two resonance components, which are arranged at an interval, wherein each resonance component includes a resonance column and a resonance disk connected to the resonance column, and the resonance column is located between the first shielding layer and the second shielding layer and is connected to the first shielding layer; and a coupling enhancement component, which is respectively arranged at intervals from the first shielding layer and the second shielding layer, and is respectively connected to at least two resonance columns, so as to increase a coupling coefficient between the at least two resonance columns.

An in-line resonator filter has a linear array of three or more conductors. A first pair of adjacent conductors has inductive main coupling and oppositely signed capacitive main coupling, while a second pair of non-adjacent conductors has inductive cross-coupling. The first and second pairs have one conductor in common. Between the second pair of non-adjacent conductors, there is no direct ohmic connection that provides the corresponding inductive cross-coupling. The oppositely signed capacitive main coupling compensates for at least a portion of the inductive main coupling between the first pair of adjacent conductors. The in-line resonator filter is able to provide one or more transmission zeros without requiring any discrete bypass connectors that provide direct ohmic connection between pairs of non-adjacent conductors. As such, the in-line resonator filters can be smaller, less complex, and less susceptible to damage.

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.

A resonator includes a shield conductor, a columnar body, and a first dielectric body. The shield conductor includes a first conductor located on a negative z-direction side and a second conductor located on a positive z-direction side, and has a cavity therein. The columnar body has a columnar shape, and is placed inside the cavity, an end in the negative z-direction thereof being joined to the first conductor, an interval being provided between an end in the positive z-direction of the columnar body and the shield conductor. The first dielectric body is placed inside the cavity, an end in the positive z-direction thereof being joined to the second conductor, an interval being provided between an end in the negative z-direction of the first dielectric body and the shield conductor, the first dielectric body surrounding the columnar body so as to be apart from each other.

A cavity filter includes a threaded resonator and a threaded filter body to improve the coupling of radio frequency signals.

A coaxial resonator is provided. The coaxial resonator has a first side and a second side, the coaxial resonator comprising a dielectric disc having a first surface, a second surface and a hole, wherein the second side of the coaxial resonator is connected to the first surface of the dielectric disc, wherein the coaxial resonator further comprises a conductive element connected to second surface of the dielectric disc. A filter comprising a housing, comprising a lid/cover and a chassis having one or more cavities adapted for receiving a coaxial resonator is also provided.

A radio communication filtering apparatus includes: a filter main body including a connector attaching portion and a grooved portion that encloses at least a part of the connector attaching portion; and a connector to be attached to the connector attaching portion.

The present invention comprises: a conductive chassis having a cavity resonator; a conductive cover to cover the cavity resonator; a resonant element arranged in the cavity resonator, one end of the resonant element being connected with the chassis and the other end being open end; and a movable conductor arranged in a space between the open end of the resonant element and the conductive cover. As a result, a tunable band-pass filter which is inexpensive and of a simple structure and which can change a resonance frequency of a cavity resonator and the coupling amount between cavity resonators easily is realized.

The present invention discloses a dielectric filter with multilayer resonator, including a dielectric block, a plurality of multilayer resonator formed in the dielectric block, wherein each multilayer resonator is in a column shape extending in a first direction into the dielectric block and is formed of multiple metal layers paralleling and overlapping each other in a second direction, and vias extend in the second direction and connecting the metal layers in each multilayer resonator, and a ground electrode connected to the ground terminal of each multilayer resonator.

The present invention relates to a multi-mode resonator comprising: a housing in which a cavity corresponding to a substantially single accommodating space is arranged; and multiple resonance ribs which are arranged at a predetermined interval therebetween in the cavity, have lower ends fixed to a floor surface of the housing, have upper ends facing each other, and generate a resonance signal by multiple coupling therebetween.