CN108232377B - Ultra-Wideband 690-960MHz Phase Shifter - Google Patents

Abstract

The invention discloses an ultra-wideband 690-960MHz phase shifter, characterized in that it comprises an external cavity and a phase shift module arranged therein, a transmission line and a dielectric block, the transmission line is connected to the phase shift module, the dielectric block is movably arranged on the phase shift module, the phase shift module comprises two strip lines of unequal widths, and forms a phase shifter multiple difference relationship. The invention has a simple structure, low production cost and stable performance.

Description

Ultra-Wideband 690-960MHz Phase Shifter

Technical Field

The present invention relates to the technical field of communication equipment, in particular to a phase shifter.

Background technique

Phase shifter is a device that can adjust the phase of a wave. Any transmission medium will introduce phase shift to the wave transmitted in it. This is the principle of early analog phase shifters. After the development of modern electronic technology, digital phase shifting is realized by using A/D and D/A conversion. As the name suggests, it is a discontinuous phase shifting technology, but its characteristic is high phase shifting accuracy. However, the common problem of existing phase shifters is that the overall design size is large and the manufacturing cost is high.

Summary of the invention

The purpose of the present invention is to solve the deficiencies of the prior art and to provide an ultra-wideband 690-960MHz phase shifter with simple structure, low manufacturing cost and improved performance.

The present invention adopts the following technical solutions to achieve the above-mentioned purpose: an ultra-wideband 690-960MHz phase shifter, characterized in that it includes an external cavity and a phase shift module arranged therein, a transmission line and a dielectric block, the transmission line is connected to the phase shift module, the dielectric block is movably arranged on the phase shift module, and the phase shift module includes two strip lines of unequal widths, and forms a phase shifter multiple difference relationship.

As a further illustration of the above solution, the outer cavity is provided with a PCB board, and the phase shifting module is provided on the PCB board, which greatly reduces the cost of the phase shifter.

Furthermore, the outer cavity is provided with an outer frame, which surrounds the phase shifter module and presses the strip lines of the phase shifter module, so that the intermodulation stability and consistency of the phase shifter are very high.

Furthermore, the two strip lines of unequal width of the phase shifter module are distributed upward and downward and are spaced apart from each other. The upper and lower end sides of the dielectric block are respectively provided with bent edges, which cooperate with the active covering of the edge of the phase shifter module so that the dielectric block can move along the axial direction of the strip line.

Furthermore, two dielectrics of different thicknesses are used in the portions of the dielectric block corresponding to the two strip lines, which ensures the phase multiplication relationship of the phase shifter to a certain extent; and the dielectric block uses low-cost dielectric materials, which reduces the cost to a certain extent.

The beneficial effects that can be achieved by the present invention using the above technical solution are:

The present invention adopts a phase shifter structure mainly composed of an external cavity and a phase shift module arranged therein, a transmission line and a dielectric block. The phase shifting part of the phase shifter is composed of two strip lines of unequal widths, forming a phase shifter multiple difference relationship, which can greatly reduce the size of the phase shifter, ensure the thickness of the dielectric block, and enhance the strength of the modified phase shifter.

2. The dielectric part of the phase shifter of the present invention uses two dielectrics of different thicknesses, which ensures the phase multiplication relationship of the phase shifter to a certain extent, and the dielectric block uses low-cost dielectric materials, which reduces the cost to a certain extent.

3. The phase shifter uses an outer frame to surround the phase shifter module and tightly compress the tape line, so that the intermodulation stability and consistency of the phase shifter are very high.

4. The design of the phase shifter adopts an integrated phase shifter, which is suitable for antennas with 5 units or more. Compared with the same type of phase shifters, the overall design size of the phase shifter is smaller, which can ensure a low-cost solution to a certain extent. In terms of overall design, the PCB board used is a low-cost board, which greatly reduces the cost of the phase shifter.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a schematic structural diagram of the present invention.

Description of the accompanying drawings: 1, external cavity 2, phase shift module 2-1, strip line 3, transmission line 4, dielectric block 5, external frame.

Detailed ways

The present technical solution is described in detail below in conjunction with specific embodiments.

As shown in Figures 1 and 2, the present invention is an ultra-wideband 690-960MHz phase shifter, which includes an external cavity 1 and a phase shift module 2 arranged therein, as well as a transmission line 3 and a dielectric block 4. The transmission line is connected to the phase shift module, and the dielectric block is movably arranged on the phase shift module. The phase shift module includes two strip lines 2-1 of unequal widths, and forms a phase shifter multiple difference relationship. The external cavity is provided with a PCB board, and the phase shift module is arranged on the PCB board, which greatly reduces the cost of the phase shifter.

Furthermore, the outer cavity 1 is provided with an outer frame 5, which surrounds the phase shifter module and presses the strip line of the phase shifter module, so that the intermodulation stability and consistency of the phase shifter are very high. The two strip lines of unequal widths of the phase shifter module are distributed up and down and are spaced apart from each other. The upper and lower end sides of the dielectric block are respectively provided with bending edges, and the bending edges are matched with the active covering of the edge of the phase shifter module, so that the dielectric block can move along the axial direction of the strip line. Two dielectrics of different thicknesses are used in the parts of the dielectric block corresponding to the two strip lines, which guarantees the phase multiplication relationship of the phase shifter to a certain extent; and the dielectric block uses low-cost dielectric materials, which reduces the cost to a certain extent.

Compared with the prior art, the present invention has the following advantages: 1. The phase shifting part of the phase shifter is composed of two strip lines of unequal widths, forming a phase shifter multiple difference relationship, which can greatly reduce the size of the phase shifter, ensure the thickness of the dielectric block, and enhance the strength of the modified phase shifter; the dielectric part of the phase shifter adopts two dielectrics of different thicknesses, which to a certain extent ensures the phase multiple difference relationship of the phase shifter, and the dielectric block adopts low-cost dielectric materials, which to a certain extent reduces the cost; the phase shifter adopts an outer frame to surround the phase shifter module and compresses the strip line, so that the intermodulation stability and consistency of the phase shifter are very high; the design of the phase shifter adopts an integrated phase shifter, which is suitable for antennas with 5 units or more; compared with the same type of phase shifters, the overall design size of the phase shifter is smaller, which to a certain extent can ensure a low-cost solution; in terms of overall design, the PCB board adopted is a low-cost board, which greatly reduces the cost of the modified phase shifter.

The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the present invention, which all fall within the protection scope of the present invention.

Claims (1)

1. An ultra-wideband 690-960MHz phase shifter, characterized in that it includes an outer cavity and a phase shift module arranged therein, a transmission line and a dielectric block, the transmission line is connected to the phase shift module, the dielectric block is movably arranged on the phase shift module, the phase shift module includes two strip lines of unequal widths, and forms a phase shifter multiple difference relationship, the outer cavity is provided with a PCB board, and the phase shift module is arranged on the PCB board; the outer cavity is provided with an outer frame, the outer frame surrounds the phase shifter module, and presses the strip line of the phase shifter module, the two strip lines of unequal widths of the phase shifter module are distributed up and down, and are spaced from each other, the upper and lower end sides of the dielectric block are respectively provided with bent edges, the bent edges are movably covered with the edge of the phase shifter module, so that the dielectric block can move along the axial direction of the strip line; two dielectrics of different thicknesses are used at the positions of the dielectric block corresponding to the two strip lines.