Dielectric phase shifter and base station antenna

Abstract

The invention relates to the technical field of antennas. The invention discloses a dielectric phase shifter and a base station antenna. The dielectric phase shifter comprises a cavity, a phase shifting PCB and a moving dielectric plate, the phase shifting PCB and the moving dielectric plate are arranged in the cavity, the phase shifting PCB comprises a substrate fixed in the cavity and a plurality of strip line sets arranged on the substrate side by side, and each strip line set comprises a first strip line and a second strip line which are correspondingly arranged on the two side faces of the substrate and connected. The moving dielectric plate comprises a first movable dielectric plate and a second movable dielectric plate which are arranged on the two sides of the substrate, and the first movable dielectric plate and the second movable dielectric plate are integrally connected in a sliding mode relative to the substrate in the length direction of the strip line sets. According to the dielectric phase shifter and the base station antenna provided by the invention, the number of cavities can be reduced, the space required for installation is reduced, the number of grounding pinsis reduced, the processing difficulty and cost are reduced, and the installation is convenient; and the moving dielectric plate moves relative to the plurality of strip line sets at the same time, sothat the consistency of each port can be improved.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a dielectric phase shifter and a base station antenna. Background technique [0002] In the rapid development of 5G mobile communications, large-scale array antennas have begun to be widely used, but 5G antennas with fixed inclination angles can no longer meet the needs of future complex environments. Compared with conventional mechanical tilt antennas, electric adjustable antennas can adapt to a wider range of environments and are more convenient. Therefore, the phase shifter, a key component in the electronically adjustable antenna, has become the key technology of the 5G large-scale array antenna. Its structural size, space utilization rate, processing and installation difficulty all directly affect the size and index of the whole machine. [0003] In the application of large-scale array electronically adjustable antennas, a phase shifter needs to be connected to the signal ...

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Problems solved by technology

[0004] The embodiment of the present invention provides a dielectric phase shifter and a base station antenna, which are used to solve or partially solve the problem that the use of a large number of phase shifters in the existing antenna occupies a large amount of space in the layout of the PCB feed network, which increases the difficulty of antenna design and also increases the difficulty of antenna design. Causes the problem of poor phase consistency of each signal

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