Abstract: A dielectric waveguide port coupling structure comprising: a surface-metalized dielectric block having a first surface and a second surface that is opposite to the first surface; a blind groove opened in the first surface of the dielectric block; wherein the blind groove comprises a main portion and an extension portion each extending from the main portion toward a corresponding frequency blind hole that is located nearby and opened in the first surface of the dielectric block, the blind groove having its walls metalized; and a coupling through-hole penetrating from a bottom wall of the blind groove to the second surface of the dielectric block, and used for connecting with an input or output device to input or output a signal, wherein the coupling through-hole is metalized. A transmission line is on the bottom wall of the blind groove and extends from the coupling through-hole along a corresponding extension portion.

Abstract: Embodiments of the disclosure provide an antenna filter unit and a radio unit. The antenna filter unit includes a radiation unit and a cavity filter coupled to the radiation unit. The radiation unit is arranged on an outer side of a wall of a cavity of the cavity filter. At least a part of the wall is also arranged as a reflection plate for the radiation unit. The radio unit includes the above-mentioned antenna filter unit and a radio circuit board. According to the antenna filter unit and the radio unit provided by embodiments of the disclosure, the number and volume of elements in a radio system are reduced, the degree of integration can be improved, the weight and installation space are reduced, and the costs are reduced.

Abstract: A phase shifter, an antenna unit, and a base station are disclosed. According to an embodiment, the phase shifter includes a first plate and a second plate slidable relative to the first plate. Two parallel microstrip lines are provided on a first surface of the first plate. A means electrically coupled to the two parallel microstrip lines is provided on a second surface of the second plate that faces to the first surface of the first plate. The means defines a signal transmission path which couples the two parallel microstrip lines, and introduces an infinite impedance at two coupling points on the two parallel microstrip lines where the signal transmission path is coupled to the two parallel microstrip lines.

Abstract: A phase shifting device, an antenna unit and abase station are disclosed. According to an embodiment, the phase shifting device comprises a power divider and a phase shifter. The power divider comprises an input inlet for an input signal, a first output outlet connected with an impedance member having a system impedance, and a second output outlet connected with the phase shifter. The phase shifter comprises a first plate and a second plate slidable relative to the first plate. Two parallel microstrip lines are provided on a first surface of the first plate. An adjusting member is provided on a second surface of the second plate that faces to the first surface of the first plate.

Abstract: A ceramic waveguide filter, a radio unit, an antenna unit and a base station are disclosed. According to an embodiment, a ceramic waveguide filter comprises a body (1) that is made of a ceramic material and that has a plurality of resonators each including a blind hole (101). The blind holes (101) of two of the resonators open at a first surface of the body (1) and extend toward an opposite second surface of the body (1). Capacitive coupling between the two resonators is achieved by a coupling structure (201) on/in a substrate (2), to which the body (1) is attached at the side of the second surface.

Abstract: The embodiment of the present disclosure provides a phase shifter, including a cavity, a dielectric phase shifting unit located in the cavity, and a signal transmission line. The dielectric phase shifting unit is located between the cavity shell and a part of the signal transmission line. The dielectric phase shifting unit includes at least one dielectric block with a circular cross-section, and its thickness is gradually changed with the circle center as the center. It uses the rotation of the dielectric block instead of sliding to change the relative dielectric constant of the air strip line, which saves the current extension space required for the sliding of the dielectric block, and obtains a continuously adjustable small-size phase shifter, thereby enabling the miniaturization of the base station.

Abstract: The present disclosure provides a base station. It includes a radio board; at least one primary radiator disposed on the radio board; a multi-function block configured to protect and at least partly enclose the at least one primary radiator and the radio board; and at least one secondary radiator, located above the at least one primary radiator. At least a part of the multi-function block is located between the at least one primary radiator and the at least one secondary radiator.

Abstract: A ceramic waveguide filter, a radio unit, an antenna unit and a base station are disclosed. According to an embodiment, a ceramic waveguide filter comprises a body (1) that is made of a ceramic material and that has a plurality of resonators each including a blind hole (101). The blind holes (101) of two of the resonators open at a first surface of the body (1) and extend toward an opposite econd surface of the body (1). Capacitive coupling between the two resonators is achieved by a coupling structure (201) on/in a substrate (2), to which the body (1) is attached at the side of the second surface.