Phase Shifter and ESC Antenna

Abstract

The invention discloses a phase shifter and an electric adjustable antenna. The phase shifter includes a dielectric component, a phase shifting component and a shielding component. The dielectric component includes a bottom dielectric plate and a top dielectric plate; the phase shift component It includes two fixed transmission lines arranged on the top surface of the bottom dielectric plate and arranged side by side in parallel on both sides in the longitudinal direction, and a phase shifting element arranged on the bottom surface of the top dielectric plate. The phase shifting element includes a transverse strip line and Two movable transmission lines folded in parallel at both ends of the stripline, and the movable transmission lines are coupled and connected to the fixed transmission lines one by one; the shielding assembly includes two coupling lines arranged side by side and parallel to the two fixed transmission lines, and a shielding case , the shielding case is fixedly connected to two coupled lines on both sides in the longitudinal direction, forming a shielding chamber that shields the phase shifting assembly. The shielding case of the present invention is welded with the coupling line to form a shielding cavity for accommodating the top layer dielectric board, and shields the interference of external signals to the phase shifting.

Description

technical field [0001] The invention belongs to the technical field of mobile communication, and in particular relates to a phase shifter and an electrically adjustable antenna configured with the phase shifter. Background technique [0002] In mobile communication, the electronically adjustable antenna is one of the key devices, and the phase shifter is the core component of the electronically adjustable antenna. The performance of the phase shifter directly determines the performance of the electronically adjustable antenna, thereby affecting the quality of network coverage, so the importance of the phase shifter in the field of mobile communication is self-evident. [0003] The principle of the phase shifter commonly used in electric antennas is to change the length of the transmission line that is connected to the circuit to change the length of the electrical transmission path that the signal passes through the phase shifter, so as to realize the phase change of the inp...

AI Technical Summary

Problems solved by technology

[0005] 1. The phase shifter is usually realized by microstrip line coupling. The microstrip line is a semi-open structure. The coupling circuit has high requirements for the gap, and a small gap change will seriously affect the performance of the circuit;

[0006] 2. In order to control the gap between the coupling circuits, the gap will be controlled by introducing a plastic fixed structure, but the plastic fixed structure will cause excessive resistance between the microstrip lines, resulting in the movement of the microstrip line structure during the antenna downturn process A larger pulling force is required, but excessive pulling force will cause the instability of the microstrip line structure, which will affect the phase change again.

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