Isophase differential beam forming device

Abstract

The invention provides an isophase differential beam forming device. The isophase differential beam forming device comprises a first metal reflection board, a second metal reflection board, insulation dielectric slices, a sliding device, a dielectric substrate and feeder line networks, wherein the feeder line networks are etched on the dielectric substrate; the dielectric substrate and the insulation dielectric slices are clamped between the first metal reflection board and the second metal reflection board; the sliding device is connected with the insulation dielectric slice and is used for driving multiple insulation dielectric slices to synchronously move; and the insulation dielectric slices are only overlapped with fixed transmission lines in the feeder line networks during a moving process. The isophase differential beam forming device disclosed by the invention is not overlapped with a power distribution sub unit during the moving process, and redundant consumption of the feeder line networks due to the insulation dielectric slices is prevented; and meanwhile, due to the design that an integrated large-scale insulation body is replaced by multiple small-scale insulation dielectric slices, not only is the problem that an insulation body is easy to bend and deform solved, but also the manufacturing cost of the isophase differential beam forming device is reduced.

Description

[0001] technical field [0002] The present invention relates to the technical field of base station antennas, and more specifically, to an equal-phase difference beamforming device. [0003] Background technique [0004] Traditional tunable antenna elements are composed of power dividers, transformers and phase adjusters. In high-performance antennas, these components are closely related to each other. Due to the strong interaction of these components, sometimes it is difficult to form an ideal beam shape, so A regular beamforming network is needed to address these issues. [0005] In prior art 1, US Patent No. US5949303 discloses a network that can adjust the beam depression angle of the antenna array. The beam forming network includes a fixed substrate, a stripline network and a movable insulator. The insulator is placed on the fixed substrate and Between the striplines, the striplines extend along the same direction as the insulator moves, and part of the striplines ar...

AI Technical Summary

Problems solved by technology

This technique has the following disadvantages: firstly, the relative position of the output breaks imposes constraints on the distribution, which in some practical applications contradicts the physical implementation of beamforming networks; secondly, this method is not suitable for linear antenna arrays containing an odd number of output ports

The area of ​​the insulator in the beamforming device is large, which increases the processing accuracy, difficulty and cost of the insulator, and is easy to bend and deform; the insulator overlaps with most transmission lines, which increases the loss

Images