A novel miniaturized U-shaped coupled-line microstrip phase shifter

Abstract

The present invention discloses a novel miniaturized U-shaped coupled line microstrip phase shifter, comprising a dielectric substrate, a coupling dielectric substrate and a guide positioning fastener arranged in sequence from bottom to top, a feeder microstrip line is arranged on the upper surface of the dielectric substrate, a coupling line is arranged on the lower surface of the coupling dielectric substrate, the coupling line is coupled and connected with the feeder microstrip line, the guide positioning fastener covers the coupling dielectric substrate and is fixed to the dielectric substrate, a positioning component is installed at the center of the coupling dielectric substrate, the upper and lower ends of the positioning component are respectively slidably connected with the guide positioning fastener and the dielectric substrate, and the phase shifting function is realized by moving the positioning component and the coupling dielectric substrate to change the feeder length. The present invention is suitable for large-scale array antennas, has a simple structure, excellent performance, and is easy to assemble.

Description

Technical Field

[0001] The invention relates to the technical field of large-scale array electrically adjustable antennas, in particular to a novel miniaturized U-shaped coupled line microstrip phase shifter. Background Art

[0002] Modern mobile communication technology has increasingly stringent requirements on wireless network coverage and optimization. Electrically-tuned antennas are widely used due to their flexibility in adjusting downtilt angles. Phase shifters are key components of electrically-tuned antennas, and their performance determines the performance of base station antennas.

[0003] With the coverage of 5G networks, the demand for 5G large-scale antennas has increased sharply. The high degree of integration of 5G large-scale antennas and active components has made the available space on the back of 5G large-scale antennas extremely limited. Therefore, the phase shifter of 5G large-scale electrically tunable antennas must have the characteristics of miniaturization, high integration, stable performance, and good consistency. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the defects of the above-mentioned prior art and provide a miniaturized U-shaped coupled line microstrip phase shifter suitable for 5G large-scale electrically adjustable antennas, which has a simple structure, high consistency, excellent circuit performance and is easy to assemble.

[0005] The technical solution adopted by the present invention to solve the technical problem is: a novel miniaturized U-shaped coupled line microstrip phase shifter, comprising a dielectric substrate, a coupling dielectric substrate and a guide positioning fastener arranged in sequence from bottom to top, a feeder microstrip line is arranged on the upper surface of the dielectric substrate, a U-shaped coupling line is arranged on the lower surface of the coupling dielectric substrate, the U-shaped coupling line is coupled and connected with the feeder microstrip line, the guide positioning fastener covers the coupling dielectric substrate and is fixed to the dielectric substrate, a positioning component is installed at the center of the coupling dielectric substrate, the upper and lower ends of the positioning component are respectively slidably connected with the guide positioning fastener and the dielectric substrate, and the phase shifting function is realized by moving the positioning component and the coupling dielectric substrate to change the feeder length of the feeder microstrip line.

[0006] Furthermore, the guide and positioning fastener is configured as a C-shaped groove structure, and the two sides of the C-shaped groove are connected to the dielectric substrate via claw buckles.

[0007] Furthermore, the positioning assembly includes a positioning pin, a positioning spring and a connecting piece. Two positioning pins and two positioning springs are arranged respectively. The two positioning springs are arranged along the length direction of the guide positioning fastener, the coupling medium substrate and the medium substrate. The two positioning pins are arranged between the two positioning springs. The positioning pins and the positioning springs are connected as a whole through the connecting piece. The positioning springs press the coupling medium substrate onto the medium substrate.

[0008] Furthermore, an embedding groove is provided on the coupling medium substrate, the length of the embedding groove is adapted to the interval between the two positioning pins, and the positioning pins are embedded in the embedding groove.

[0009] Furthermore, the upper and lower ends of the positioning pin are slidably connected to the guide grooves provided on the guide positioning fastener and the dielectric substrate respectively.

[0010] Furthermore, reinforcing ribs are symmetrically arranged on the back of the guide positioning fastener, and the positions of the reinforcing ribs correspond to those of the positioning springs. After the guide positioning fastener is connected to the dielectric substrate, the reinforcing ribs exert a certain pressure on the positioning springs to deform the positioning springs, thereby making the coupling dielectric substrate in close contact with the dielectric substrate.

[0011] Furthermore, the back side of the dielectric substrate is completely covered with copper.

[0012] Furthermore, the coupling medium substrate is single-sided copper-clad.

[0013] The miniaturized U-shaped coupled line microstrip phase shifter of the present invention has the following beneficial effects: a positioning component composed of a positioning pin and a positioning spring is designed, the positioning component is connected to the coupling dielectric substrate through an embedding groove, and the feeder length of the feeder microstrip line is changed by moving the positioning component and the coupling dielectric substrate to realize the phase shifting function. Specifically, the upper and lower ends of the positioning pin slide in the guide groove, thereby driving the coupling dielectric substrate to slide along the guide groove, and at the same time, the positioning spring applies pressure through the reinforcing ribs, so that the coupling dielectric substrate is in close contact with the dielectric substrate; the miniaturized U-shaped coupled line microstrip phase shifter is suitable for 5G large-scale electrically adjustable antenna arrays, has a simple structure, high consistency, excellent circuit performance, and is easy to assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0015] Figure 1 is an assembly diagram of the present invention;

[0016] Figure 2 is an exploded view of the present invention;

[0017] In the figure: 1. dielectric substrate, 2. feeder microstrip line, 3. guide groove, 4. coupling dielectric substrate, 5. U-shaped coupling line, 6. positioning pin, 7. positioning spring, 8. guide positioning fastener, 9. claw buckle, 10. connector, 11. reinforcing rib, 12. embedding groove. DETAILED DESCRIPTION

[0018] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0019] like Figure 1 , 2 A novel miniaturized U-shaped coupled line microstrip phase shifter is shown, comprising a dielectric substrate 1, a coupling dielectric substrate 4 and a guide positioning fastener 8 arranged in sequence from bottom to top, a feeder microstrip line 2 is arranged on the upper surface of the dielectric substrate 1, a U-shaped coupling line 5 is arranged on the lower surface of the coupling dielectric substrate 4, the U-shaped coupling line 5 is coupled and connected to the feeder microstrip line 2, the guide positioning fastener 8 covers the coupling dielectric substrate 4 and is fixed to the dielectric substrate 1 through a claw buckle 9, a positioning component is installed at the center of the coupling dielectric substrate 4, and the upper and lower ends of the positioning component are respectively slidably connected to the guide positioning fastener 8 and the dielectric substrate 1, and the phase shifting function is realized by moving the positioning component and the coupling dielectric substrate 4 to change the feeder length of the feeder microstrip line 2.

[0020] The positioning assembly includes a positioning pin 6, a positioning spring 7 and a connector 10. Two positioning pins 6 and two positioning springs 7 are arranged respectively. The two positioning springs 7 are arranged along the length direction of the guide positioning fastener 8, the coupling dielectric substrate 4 and the dielectric substrate 1. The two positioning pins 6 are arranged between the two positioning springs 7. The positioning pin 6 and the positioning spring 7 are connected as a whole through the connector 10. The positioning spring 7 presses the coupling dielectric substrate 4 onto the dielectric substrate 1.

[0021] An embedding groove 12 is provided on the coupling dielectric substrate 4, and the length of the embedding groove 12 is adapted to the spacing between the two positioning pins 6. The positioning pins 6 are embedded in the embedding groove 12, and the upper and lower ends of the positioning pins 6 are slidably connected to the guide grooves 3 provided on the guide positioning fastener 8 and the dielectric substrate 1 respectively.

[0022] Reinforcing ribs 11 are symmetrically arranged on the back of the guide positioning fastener 8, and the positions of the reinforcing ribs 11 correspond to those of the positioning spring 7. After the guide positioning fastener 8 is connected to the dielectric substrate 1, the reinforcing ribs exert a certain pressure on the positioning spring to deform the positioning spring, thereby making the coupling dielectric substrate 4 in close contact with the dielectric substrate 1.

[0023] The back side of the dielectric substrate 1 is completely covered with copper, and the coupling dielectric substrate 4 is covered with copper on one side.

[0024] The miniaturized U-shaped coupled line microstrip phase shifter of the present invention is designed with a positioning component composed of a positioning pin 6 and a positioning reed 7. The positioning component is connected to the coupling dielectric substrate 4 through an embedding groove 12. The feeder length of the feeder microstrip line 2 is changed by moving the positioning component and the coupling dielectric substrate 4 to realize the phase shifting function. Specifically, the upper and lower ends of the positioning pin 6 slide in the guide groove 3, thereby driving the coupling dielectric substrate 4 to slide along the guide groove 3. At the same time, the positioning reed 7 applies pressure through the reinforcing rib 11, so that the coupling dielectric substrate 4 is in close contact with the dielectric substrate 1. The miniaturized U-shaped coupled line microstrip phase shifter is suitable for 5G large-scale electrically adjustable antenna arrays, has a simple structure, high consistency, excellent circuit performance, and is easy to assemble.

[0025] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A novel miniaturized U-shaped coupled line microstrip phase shifter, characterized by: The invention comprises a dielectric substrate (1), a coupling dielectric substrate (4) and a guide positioning fastener (8) which are arranged in sequence from bottom to top, wherein a feeder microstrip line (2) is arranged on the upper surface of the dielectric substrate (1), a U-shaped coupling line (5) is arranged on the lower surface of the coupling dielectric substrate (4), the U-shaped coupling line (5) is coupled and connected to the feeder microstrip line (2), the guide positioning fastener (8) covers the coupling dielectric substrate (4) and is fixed to the dielectric substrate (1), a positioning component is installed at the center of the coupling dielectric substrate (4), the upper and lower ends of the positioning component are respectively slidably connected to the guide positioning fastener (8) and the dielectric substrate (1), and the feeder length of the feeder microstrip line (2) is changed by moving the positioning component and the coupling dielectric substrate (4) to realize a phase shifting function; The positioning assembly comprises a positioning pin (6), a positioning spring (7) and a connecting piece (10). Two positioning pins (6) and two positioning springs (7) are arranged respectively. The two positioning springs (7) are arranged along the length direction of the guide positioning fastener (8), the coupling medium substrate (4) and the medium substrate (1). The two positioning pins (6) are arranged between the two positioning springs (7). The positioning pins (6) and the positioning springs (7) are connected as a whole through the connecting piece (10). The positioning springs (7) press the coupling medium substrate (4) onto the medium substrate (1). The guide positioning fastener (8) is configured as a C-shaped groove structure, and the two sides of the C-shaped groove are connected to the dielectric substrate (1) via claw buckles (9); The back side of the dielectric substrate (1) is completely copper-clad, and the coupling dielectric substrate (4) is copper-clad on one side.

2. A novel miniaturized U-shaped coupled line microstrip phase shifter according to claim 1, characterized in that: The coupling medium substrate (4) is provided with an embedding groove (12), the length of the embedding groove (12) is adapted to the spacing between the two positioning pins (6), and the positioning pins (6) are embedded in the embedding groove (12).

3. A novel miniaturized U-shaped coupled line microstrip phase shifter according to claim 1, characterized in that: The upper and lower ends of the positioning pin (6) are respectively slidably connected to the guide grooves (3) provided on the guide positioning fastener (8) and the dielectric base plate (1).

4. A novel miniaturized U-shaped coupled line microstrip phase shifter according to claim 1, characterized in that: The back of the guide positioning fastener (8) is symmetrically provided with reinforcing ribs (11), and the positions of the reinforcing ribs (11) correspond to those of the positioning spring sheet (7).

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