Phase position continuous linear-variable phase shifter for base station electrically controlled antenna

An electronically adjustable antenna and phase shifter technology, which is applied in the direction of antennas and electrical components, can solve the problems of non-continuous adjustment of beam downtilt angle, deviation of beam downtilt angle, unstable performance, etc., and achieve the suppression of passive intermodulation products , Precise control of linear changes, stable performance
CN102544733AActive Publication Date: 2012-07-04GUANGDONG BROADRADIO COMM TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUANGDONG BROADRADIO COMM TECH
Publication Date
2012-07-04

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Abstract

The invention discloses a phase position continuous linear-variable phase shifter for a base station electrically controlled antenna, which comprises a power divider group, transmission lines and medium baseplates, wherein the power divider group comprises a main power divider and a plurality of slave power dividers; the power dividers and the transmission lines are realized in a strip line structure; the medium baseplates are positioned between a transmission line circuit and an upper layer floor, and between the transmission line circuit and a lower layer floor; and the power divider group, the transmission lines and the medium baseplates are integrally designed. According to the invention, the phase shift is realized, and at the same time, the power amplitude weighting of each output port is also realized. The phase shifter has the advantages of simple structure, easiness in processing, and low cost. A phase shift element adopts a medium baseplate structure, and the passive intermodulation product is suppressed. The power divider group and the transmission line circuit adopt a strip line structure, and the power capacity of the phase shifter is increased.
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Description

technical field

[0001] The invention relates to the field of mobile base station antennas, and more specifically relates to a strip line phase shifter with continuous and linear variable phase. technical background

[0002] The base station antenna is a key component of the mobile communication system, and the base station antenna provides wireless signal coverage to the service cell where it is located. In order to optimize the signal coverage of the service cell, the base station antenna needs to reasonably adjust the beam pointing of the vertical pattern of the base station antenna so that the vertical beam pointing has a certain downtilt angle. In practical applications, the signal coverage and co-channel interference are constantly changing, and the number of users in the service cell is also constantly changing. The beam downtilt angle of the base station antenna is required to change with time and position continuously, that is, the beam downtilt angle of the base sta...

Claims

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