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

Active Publication Date: 2012-07-04
GUANGDONG BROADRADIO COMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the prior art, a type of phase shifter changes the phase of the transmission signal by changing the physical length of the transmission line, such as the US patent (US2,502,359). The disadvantage of this type of phase shifter is that the installation is unchanged, the volume is large, and the performance unstable
There is also a quantized digital phase shifter, such as the US patent (US6,611,230), but it is expensive, and the beam downtilt of the quantized digital phase shifter is biased and the beam downtilt cannot be continuously adjusted

Method used

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

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Embodiment Construction

[0016] The above content has clearly and completely described the present invention, and the specific implementation of the present invention will be further described below in conjunction with the accompanying drawings, but the protection scope and implementation of the present invention are not limited thereto.

[0017] figure 1 It is a planar structure of the base phase shifter element, including a linear transmission line 101 and two dielectric substrates 102 with the same structure. The linear transmission line 101 adopts a strip line structure. Dielectric substrates 102 with the same structure are respectively placed between the transmission line dielectric board 110 and the upper floor 111 of the stripline structure and between the transmission line dielectric board and the lower floor 112 of the stripline structure (such as figure 2 ), a rectangular groove 103 is opened in the dielectric substrate 102 . When two dielectric substrates 102 with the same structure move ...

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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.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q3/32
Inventor 吴壁群叶亮华
Owner GUANGDONG BROADRADIO COMM TECH
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