An antenna assembly comprises a plurality of radiating elements; an unshielded circuit; and an input terminal; wherein the radiating elements are connected to the unshielded circuit through a plurality of cables, and the unshielded circuit is connected to the input terminal through an input cable; and wherein at least one of the plurality of cables and the input cable is connected to an open connect line.

A cavity-type radio frequency filter is disclosed. the radio frequency filter having a cavity structure including an enclosure, a resonant element, a cover, a frequency tuning screw, and a resilient fixing member. The enclosure has a hollow inside and an open surface on one side to have a cavity. The resonant element is positioned in the hollow of the enclosure. The cover has a screw hole having a preset diameter at a position corresponding to the resonant element, and is configured to seal the open surface of the enclosure. The frequency tuning screw is configured to be screwed into the screw hole of the cover, and it has an upper end formed at least partially with a latching abutment that protrudes outwardly.

The present disclosure relates to a dielectric coupling sleeve configured to capacitively couple a first electrical conductor to a second electrical conductor. The dielectric coupling sleeve includes a first sleeve section and a second sleeve section. The first sleeve section has a first diameter. A receiving space is closed on one side and formed in the first sleeve section. The receiving section is configured to receive an insertion of the first electrical conductor. The second sleeve section has a second diameter. The second diameter is smaller than the first diameter. The second sleeve section is configured for insertion into the conductor cavity of the second electrical conductor.

A coaxial radio frequency (RF) isolator is disclosed. The isolator can include an input connector, an output connector, and a conductive body. The isolator can also include an outer shield surrounding a portion of the body. The isolator can further include a coupler within the outer shield and forming a cavity between an inner surface of the body and the coupling member. The coupler can be configured to electrically couple with the outer shield. Additionally, the isolator can include a coaxial circuit surrounding a portion of the coupler within the cavity. Further, the isolator can include a toroid surrounding a portion of the coupler and positioned within the cavity. Moreover, the isolator can include a signal conditioning circuit electrically configured to condition signals communicated between the input connector and the output connector.

A coaxial radio frequency (RF) isolator is disclosed. The isolator can include an input connector, an output connector, and a conductive body. The isolator can also include an outer shield surrounding a portion of the body. The isolator can further include a coupler within the outer shield and forming a cavity between an inner surface of the body and the coupling member. The coupler can be configured to electrically couple with the outer shield. Additionally, the isolator can include a coaxial circuit surrounding a portion of the coupler within the cavity. Further, the isolator can include a toroid surrounding a portion of the coupler and positioned within the cavity. Moreover, the isolator can include a signal conditioning circuit electrically configured to condition signals communicated between the input connector and the output connector.

Provided are a coaxial filter and a communication radio frequency device. The communication radio frequency device includes the coaxial filter. The coaxial filter includes a housing having a resonant cavity, a cover plate, and a resonator. The cover plate corresponds to the resonant cavity and covers the housing. The resonator includes plurality of elastic pieces, a connection portion, and a body portion which are sequentially connected from one end to another end. The connection portion is connected to a bottom of the resonant cavity.

Provided are a coaxial filter and a communication radio frequency device. The communication radio frequency device includes the coaxial filter. The coaxial filter includes a housing having a resonant cavity, a cover plate, and a resonator. The cover plate corresponds to the resonant cavity and covers the housing. The resonator includes plurality of elastic pieces, a connection portion, and a body portion which are sequentially connected from one end to another end. The connection portion is connected to a bottom of the resonant cavity.

A filter cable, which solves the problem that devices which can better cope with various problems in complex electromagnetic environment and have simple and reasonable structural design are lacking in the related art. The filter cable comprises a core wire; the core wire comprises an insulating substrate and a first conductor layer surrounding the insulating substrate; the first conductor layer has a first etching pattern; the first etching pattern is distributed along the axial direction of the filter cable; and the first etching pattern is used to make the filter cable equivalent to a first filter circuit to realize the filtering function.

An isolator includes a body including an input connector and an output connector. The isolator also includes an outer shield positioned at least partially around a portion of the body. The isolator also includes a coupling member electrically coupled to the outer shield and positioned at least partially within the outer shield. The isolator also includes a coaxial circuit positioned at least partially around a first portion of the coupling member. The isolator also includes a toroid positioned at least partially around a second portion of the coupling member. The toroid is configured to filter radio frequency (RF) signals. The first portion and the second portion are axially-adjacent to one another. The isolator also includes a conditioning circuit in communication with the input connector and the output connector. The conditioning circuit is configured to condition the RF signals communicated between the input connector and the output connector.

An isolator includes a body including an input connector and an output connector. The isolator also includes an outer shield positioned at least partially around a portion of the body. The isolator also includes a coupling member electrically coupled to the outer shield and positioned at least partially within the outer shield. The isolator also includes a coaxial circuit positioned at least partially around a first portion of the coupling member. The isolator also includes a toroid positioned at least partially around a second portion of the coupling member. The toroid is configured to filter radio frequency (RF) signals. The first portion and the second portion are axially-adjacent to one another. The isolator also includes a conditioning circuit in communication with the input connector and the output connector. The conditioning circuit is configured to condition the RF signals communicated between the input connector and the output connector.