A Phase Shifting Device Based on Medium Loading

Abstract

Disclosed is a phase shifting apparatus based on medium loading. The phase shifting apparatus comprises a feeder and a movable dielectric element neighboring to at least one side of the feeder. The dielectric element comprises two or more separated interactive dielectric sections with certain dielectric constants. The interactive dielectric sections are dynamically overlapped with the feeder. The area of each of the interactive dielectric sections decreases along the direction of inserting into the feeder. Shapes and sizes of the interactive dielectric sections are the same. Dielectric constants, sizes and intervals defined by two relative sides of every two neighboring interactive dielectric sections are determined by a computer optimizing mode, so as to make the reflection of a signal transmitted on the feeder minimum. By using the foregoing implementation mode, linearity performance between the phase shift of the phase shifting apparatus and the medium slippage is good, the phase shift is great, the layout is convenient, and cost is lower.

Description

technical field [0001] The invention relates to the field of mobile communication base station antennas, in particular to a medium-loaded phase shifting device. Background technique [0002] The phase shifter is the core component of the base station electronically adjustable antenna. The existing phase shifter design generally adopts the dielectric chip loading method, such as the base station electronically adjustable antenna phase shifter described in the patent No. ZL200520063505.9 and ZL200620053705.0 Chinese patent documents , using the loading of the dielectric sheet to the air medium. [0003] It changes the phase shift amount by changing the insertion degree of the dielectric sheet, but the design uses a simple-shaped dielectric sheet design, which cannot guarantee the linear relationship between the phase shift amount and the medium phase shift amount. It is difficult to ensure a good standing wave; moreover, the design is integrated with the power distribution ne...

AI Technical Summary

Problems solved by technology

[0003] It changes the phase shift amount by changing the insertion degree of the dielectric sheet, but the design uses a simple-shaped dielectric sheet design, which cannot guarantee the linear relationship between the phase shift amount and the medium phase shift amount. It is difficult to ensure a good standing wave; and the design is integrated with the power division network, compared with the phase shifter module proposed by the present invention, the cost is higher and the layout flexibility is not enough

Images