Phase shift unit, phase shifter and base station antenna

Abstract

Embodiments of the invention provide a phase shift unit, a phase shifter and a base station antenna. The phase shift unit comprises a sliding medium and multiple segment strip lines; each of the striplines comprises a main transmission line and multiple loading portions disposed on the main transmission line; connection is established between each of the strip lines by the main transmission line;at least one of main transmission line parameters and / or loading portion parameters of the each two segments adjacent strip lines is different from each other; and the sliding medium is used for changing a coverage state on the multiple segment strip lines by sliding, thereby achieving phase shift. Through arrangement of the multiple segment strip lines, the phase shift unit, the phase shifter and the base station antenna provided by the embodiments of the invention make the sliding medium change the coverage state on the multiple segment strip lines in a sliding process, and therefore, underthe premise of not increasing the size of the phase shift unit, a phase shifting section and a matching section are combined into one, the phase shifting amount is improved, a matching series is reduced, the matching effect is improved, and the problem that the phase shifting amount of an electrically adjustable base station antenna has a large demand is solved.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of communications, and in particular, to a phase shift unit, a phase shifter, and a base station antenna. Background technique [0002] In the mobile communication network coverage, the base station antenna is one of the key equipment of the coverage network, and the phase shifter is the core component of the electric adjustment base station antenna. The performance of the phase shifter directly determines the performance of the electric adjustment base station antenna, and then affect the coverage quality of the network. [0003] The dielectric phase shifter mainly adjusts the phase size from the input port to the output port by moving the medium in its cavity to change the phase input to the antenna array, thereby adjusting the beam downtilt angle of the base station antenna. Currently, dielectric phase shifters are widely used in the industry. However, the phase shift amount of...

AI Technical Summary

Problems solved by technology

[0005] An embodiment of the present invention provides a phase shift unit, a phase shifter, and a base station antenna to solve the problem that the phase shift amount of the dielectric phase shifter is small

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