Few-cable and cable-free phase shifter
By designing a cable-free phase shifter with fewer cables, and utilizing a high-frequency PCB board and a rotating slider structure, the problem of excessive and long cables in existing phase shifters is solved, achieving the effects of low antenna loss, high gain, low cost, and good aesthetics.
Patent Information
- Application Number
- CN202423267253.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-27
AI Technical Summary
Existing 1710-2170MHz phase shifters use either fan-shaped PCBs with cables or cavity-type cables, resulting in excessive and long cables that affect antenna gain and aesthetics.
Design a cable-free or cable-less phase shifter, employing two sets of high-frequency PCBs and a rotating slider structure. By etching microstrip lines on the high-frequency PCBs and etching a second microstrip line on the dielectric slider, combined with coaxial cable connection, phase change is achieved by sliding the rotating slider on the PCBs, reducing the physical length of the transmission line, and using a slow-wave structure to reduce size.
It achieves lower array antenna loss, higher gain, lower cost, and more aesthetically pleasing appearance with the same radiating element spacing and number.
Smart Images
Figure CN223598995U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to phase shifter technical field, concretely relates to a few cable cableless phase shifter. BACKGROUND
[0002] Traditional phase shifter design includes multiple types, such as mechanical, analog and digital phase shifters, mechanical phase shifter changes phase by physically moving dielectric sheet, while analog and digital phase shifters use electronic circuits to adjust phase, with the development of technology, higher requirements are put forward for miniaturization, broadband and low cost of phase shifter. The existing phase shifter implementation scheme mainly includes two types: physical length variable phase shifter and dielectric sliding type phase shifter. Physical length variable phase shifter changes phase by changing the physical length of signal transmission path, while dielectric sliding type phase shifter adjusts phase by moving dielectric sheet. These schemes have their own characteristics in implementation, but also have some problems, such as the size of physical length variable phase shifter is large, and the insertion loss and return loss of dielectric sliding type phase shifter may be large.
[0003] For example, the current 1710-2170MHz phase shifter usually adopts the mode of fan-shaped printed circuit board (PCB) cooperating with cable or cavity structure cooperating with cable, in order to meet the demand of antenna performance, the length of cable needs to be adjusted to optimize the phase difference between radiation units, so as to improve the radiation performance, but the use of longer transmission line to realize the required phase movement is not compact in physical layout, not only increases the physical size, but also causes the increase of signal loss, thereby reducing the gain of antenna, which is not conducive to the miniaturization and beauty of antenna equipment. SUMMARY
[0004] (1) Technical problem to be solved
[0005] In view of the defects of the prior art, the utility model aims at providing a few cable cableless phase shifter, which aims at solving the problem that too many and too long cables affect the gain and beauty of antenna in the mode of existing 1710-2170MHz phase shifter adopting fan-shaped pcb cooperating with cable or cavity type cooperating with cable.
[0006] (2) Technical scheme
[0007] In order to solve the above technical problems, the utility model provides a kind of few cable cableless phase shifter, the number of the phase shifter is two groups, each group of phase shifter includes high frequency PCB board and rotating slide around common circle center, the upper surface of high frequency PCB board is etched with first microstrip circuit, rotating slide includes dielectric slide, upper clamping piece and lower clamping piece, the lower surface of dielectric slide is etched with second microstrip circuit, the position of first microstrip circuit and second microstrip circuit one to one corresponds, upper clamping piece and lower clamping piece are used to clamp dielectric slide and make the phase of transmission line corresponding change on high frequency PCB board sliding;
[0008] The middle part of the upper clamping piece of the lower group is provided with a positioning hole, and the lower surface of the lower clamping piece of the upper group is fixedly connected with two positioning columns, and the positioning hole and the positioning column are corresponding in position.
[0009] Preferably, the first microstrip circuit includes a first center line and three arc-shaped bent microstrip lines, one end of the first center line is connected with the input port through a microstrip main transmission line, the other end of the first center line is connected with a short-circuit microstrip line, the centers of the three arc-shaped bent microstrip lines are on the first center line, the left and right ends of each arc-shaped bent microstrip line are connected with an output port through a microstrip wall, and the width of the microstrip wall is greater than the width of the arc-shaped bent microstrip line.
[0010] Further, the second microstrip circuit includes a second center line and three microstrip arc arms, the centers of the three microstrip arc arms are on the second center line, and the second center line and the three microstrip arc arms are connected through conductive lines.
[0011] Further, the left and right sides of the upper clamping piece are fixedly connected with a plurality of first elastic walls, the left and right sides of the lower clamping piece are fixedly connected with a plurality of second elastic walls, the front and rear sides of the upper clamping piece are provided with limiting holes and mounting holes respectively, and the front and rear sides of the upper surface of the lower clamping piece are fixedly connected with elastic clamping columns and mounting columns respectively.
[0012] Further, the upper clamping piece and the first elastic wall are integrally formed, the rear side first elastic wall is bent towards the front and rear sides, and the front side first elastic wall is bent forward, the lower clamping piece and the second elastic wall are integrally formed, the rear side second elastic wall is bent towards the front and rear sides, and the front side second elastic wall is bent forward.
[0013] Further, it further includes two fixed supports, the left and right sides of the high frequency PCB board are fixedly connected with the two fixed supports through limiting screws, the front and rear sides of the lower surface of the fixed support are fixedly connected with a stand column, the bottom end of the stand column is fixedly connected with an elastic clamping block, and the front and rear sides of the upper surface of the fixed support are provided with clamping holes corresponding to the elastic clamping block.
[0014] Further, the upper surface of the fixed support is fixedly connected with a plurality of cable clamping grooves.
[0015] Beneficial effects
[0016] Compared with the prior art, the utility model has the advantages that:
[0017] The utility model discloses a plurality of positive and negative phase shifters are connected to each other through the elastic clamping block and the clamping hole, and the positive and negative phase shifters are connected to each other through the elastic clamping block and the clamping hole, so that the positive and negative phase shifters are connected to each other and are more firm.
[0018] The utility model discloses a plurality of positive and negative phase shifters are connected to each other through the elastic clamping block and the clamping hole, and the positive and negative phase shifters are connected to each other through the elastic clamping block and the clamping hole, so that the positive and negative phase shifters are connected to each other and are more firm.
[0019] The utility model discloses a plurality of positive and negative phase shifters are connected to each other through the elastic clamping block and the clamping hole, and the positive and negative phase shifters are connected to each other through the elastic clamping block and the clamping hole, so that the positive and negative phase shifters are connected to each other and are more firm. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 It is the explosion structure schematic drawing of the utility model.
[0021] Figure 2 It is the utility model's overhead structure schematic diagram.
[0022] Figure 3 It is the explosion structure schematic drawing of the utility model's rotary slide.
[0023] Figure 4 It is the utility model's two groups of phase shifter's connection structure schematic diagram.
[0024] Figure 5 It is the utility model's two groups of phase shifter's connection structure schematic diagram.
[0025] The marks in the drawings are: 1, high-frequency PCB board; 2, rotating slide; 3, first microstrip line; 4, dielectric slide; 5, upper clamping part; 6, lower clamping part; 7, second microstrip line; 8, first elastic wall; 9, second elastic wall; 10, fixed support; 11, stand; 12, elastic clamping block; 13, clamping hole; 14, cable clamping groove; 301, first circle center line; 302, arc-shaped bent microstrip line; 303, microstrip main transmission line; 304, output port; 305, microstrip wall; 306, short-circuit microstrip line; 501, limiting hole; 502, mounting hole; 503, positioning hole; 601, elastic clamping column; 602, mounting column; 603, positioning column; 701, second circle center line; 702, microstrip arc arm; 703, conductive line. DETAILED DESCRIPTION
[0026] The specific embodiment is a few-cable cableless phase shifter, the structural diagram of which is shown in Figures 1-5 The number of the phase shifter is two groups, each group of phase shifters includes a high-frequency PCB board 1 and a rotating slide 2 rotating around a common center, the specific high-frequency PCB board 1 is a fan-shaped structure, the frequency is 1710-2170 MHz, the phase shifter includes power division and phase shift functions, and the rotating slide 2 is driven to move between the high-frequency PCB boards 1 through a transmission assembly, so that the phase shifter can more flexibly adjust the phase to adapt to different performance requirements, the upper surface of the high-frequency PCB board 1 is etched with a first microstrip line 3, the rotating slide 2 includes a dielectric slide 4, an upper clamping part 5 and a lower clamping part 6, the lower surface of the dielectric slide 4 is etched with a second microstrip line 7, the first microstrip line 3 and the second microstrip line 7 are one-to-one corresponding in position, and the upper clamping part 5 and the lower clamping part 6 are used for clamping the dielectric slide 4 to slide on the high-frequency PCB board 1 to cause the phase of the transmission line to change correspondingly;
[0027] The middle part of the upper clamping part 5 of the lower group is provided with a positioning hole 503, the lower surface of the lower clamping part 6 of the upper group is fixedly connected with two positioning columns 603, the positioning hole 503 corresponds to the positioning column 603 in position, in order to improve the synchronism, the positions of the rotating slides 2 of the two groups of phase shifters are the same after the high-frequency PCB boards 1 are fixed, and the common centers of the two groups of rotating slides 2 are concentrically arranged, the inner diameter of the positioning hole 503 is the same as the outer diameter of the positioning column 603 in size;
[0028] As shown in Figure 1 and Figure 4 After the upper and lower phase shifter assemblies are clamped and stacked, the positioning column 603 on the lower clamping part 6 of the upper group is inserted into the positioning hole 503 on the upper clamping part 5 of the lower group, so that the positive and negative polarization phase shifters can be connected in series for linkage, and the consistency of the amplitude and phase changes of the positive and negative polarization phase shifters during work is ensured.
[0029] As shown in Figure 1 andFigure 2 As shown in the figure: in this embodiment, the first microstrip line 3 includes a first circular center line 301 and three arc-shaped bending microstrip lines 302, one end of the first circular center line 301 is connected with the input port through a microstrip main transmission line 303, the other end of the first circular center line 301 is connected with a short-circuit microstrip line 306, and the short-circuit microstrip line 306 is specifically a 1 / 4 wavelength short-circuit microstrip line or a 1 / 4 wavelength short-circuit stub microstrip line, which is used as a lightning protection for radio frequency signals, an electrostatic protection, or a matching impedance transformer, etc., the centers of the three arc-shaped bending microstrip lines 302 are on the first circular center line 301, and the radii of the three arc-shaped bending microstrip lines 302 are arranged in a certain proportional relationship, the arc-shaped bending microstrip line 302 is specifically an arc-shaped slow wave structure, and the physical length is reduced through the slow wave structure, which is beneficial to reducing the size of the phase shifter, and the left and right ends of each arc-shaped bending microstrip line 302 are connected with an output port 304 through a microstrip wall 305, and the width of the microstrip wall 305 is greater than the width of the arc-shaped bending microstrip line 302.
[0030] As shown in the figure: Figure 1 and Figure 3 As shown in the figure: in this embodiment, the second microstrip line 7 includes a second circular center line 701 and three microstrip circular arc arms 702, the centers of the three microstrip circular arc arms 702 are on the second circular center line 701, and the second circular center line 701 and the three microstrip circular arc arms 702 are connected through a conductive line 703.
[0031] In this way, when the rotating slide 2 moves between the high-frequency PCB boards 1, the three microstrip circular arc arms 702 move along the corresponding three arc-shaped bending microstrip lines 302.
[0032] As shown in the figure: Figure 1 and Figure 3 As shown in the figure: in this embodiment, the left and right sides of the upper clamping part 5 are fixedly connected with a plurality of first elastic walls 8, and the left and right sides of the lower clamping part 6 are fixedly connected with a plurality of second elastic walls 9, the front and rear sides of the upper clamping part 5 are respectively provided with a limiting hole 501 and a mounting hole 502, and the front and rear sides of the upper surface of the lower clamping part 6 are respectively fixedly connected with an elastic clamping column 601 and a mounting column 602.
[0033] As shown in the figure: Figure 3 The elastic clamping column 601 is integrally injection molded with the lower clamping part 6, the elastic clamping column 601 is formed with a connecting column and a limiting clamping block, the connecting column can be deformed during connection, after the upper clamping part 5 and the lower clamping part 6 are installed, the elastic clamping column 601 is clamped in the limiting hole 501, the mounting column 602 passes through the first circular center line 301 and the second circular center line 701 and is located in the mounting hole 502, the upper clamping part 5 and the lower clamping part 6 can rotate around the center of the mounting column 602, and at the same time, the first elastic wall 8 and the second elastic wall 9 press the dielectric slide 4 against the high-frequency PCB board 1.
[0034] As shown in the figure:Figure 1 and Figure 3 As shown in the figure: in this embodiment, the upper clamping part 5 is integrally formed with the first elastic wall 8, the rear first elastic wall 8 is bent to the front and rear sides, the front first elastic wall 8 is bent to the front, the lower clamping part 6 is integrally formed with the second elastic wall 9, the rear second elastic wall 9 is bent to the front and rear sides, and the front second elastic wall 9 is bent to the front.
[0035] In this way, the first elastic wall 8 and the second elastic wall 9 can well make the rotating sliding piece 2 and the high-frequency PCB plate 1 adhere to each other, and ensure the stability of the phase shifter during work.
[0036] As shown in the figure: Figure 1 and Figure 5 As shown in the figure: in this embodiment, two fixed supports 10 are further included, the left and right sides of the high-frequency PCB plate 1 are fixedly connected with the two fixed supports 10 through limiting screws, the front and rear sides of the lower surface of the fixed support 10 are fixedly connected with a stand 11, the bottom end of the stand 11 is fixedly connected with an elastic clamping block 12, the front and rear sides of the upper surface of the fixed support 10 are provided with clamping holes 13 corresponding to the elastic clamping block 12, the elastic clamping block 12 is integrally injection molded with the fixed support 10 and the stand 11, the elastic clamping block 12 is formed with a connecting column and a limiting clamping block, and the connecting column can be deformed during connection.
[0037] In this way, after the upper and lower multiple positive and negative phase shifter assemblies are clamped and stacked, the elastic clamping block 12 on the upper side is clamped in the clamping hole 13 on the lower side, which not only can be connected as a whole, but also the multi-layer mutual clamping is more firm.
[0038] As shown in the figure: Figure 2 In this embodiment, the upper surface of the fixed support 10 is fixedly connected with a plurality of cable clamping grooves 14, so that the cable clamping grooves 14 fix the connected coaxial cable, and the whole is more beautiful.
[0039] Working principle: by etching the first microstrip line 3 on the fan-shaped high-frequency PCB plate 1 and etching the second microstrip line 7 on the dielectric sliding piece 4, and connecting them by using a coaxial cable, the first elastic wall 8 and the second elastic wall 9 clamp and slide the dielectric sliding piece 4 on the high-frequency PCB plate 1 during work to make the phase of the transmission line change accordingly, since the first microstrip line 3 adopts a slow wave structure to reduce the physical length, the physical length of the transmission line required for phase movement is smaller at this time, thereby being conducive to reducing the size of the phase shifter, and using a shorter cable between the outlets of the phase shifter to realize the connection with the radiation unit, in the case of the same radiation unit spacing and number, the array antenna has lower loss, higher gain and lower cost.
[0040] All the technical features in the embodiment can be freely combined according to actual needs.
[0041] The above embodiment is a preferred implementation scheme of the present application, in addition to this, the present application can be implemented in other ways, and any obvious replacement without departing from the technical scheme concept is within the protection scope of the present application.
Claims
1. A few-cable or cableless phase shifter, the number of which is two groups, each group of said phase shifters comprising a high-frequency PCB board (1) and a rotating slider (2) rotating around a common center, characterized in that: The upper surface of the high-frequency PCB board (1) is etched with a first microstrip line (3), the rotary slide (2) comprises a dielectric slide (4), an upper clamping piece (5) and a lower clamping piece (6), the lower surface of the dielectric slide (4) is etched with a second microstrip line (7), the first microstrip line (3) and the second microstrip line (7) correspond one by one, and the upper clamping piece (5) and the lower clamping piece (6) are used for clamping the dielectric slide (4) to slide on the high-frequency PCB board (1) to cause corresponding changes in the phase of the transmission line. A positioning hole (503) is arranged in the middle of the upper clamping piece (5) of the lower group, and two positioning columns (603) are fixedly connected to the lower surface of the lower clamping piece (6) of the upper group, and the positioning hole (503) and the positioning column (603) correspond in position.
2. The few-cable or cable-less phase shifter of claim 1, wherein, The first microstrip line (3) comprises a first circular center line (301) and three arc-shaped bent microstrip lines (302), one end of the first circular center line (301) is connected with an input port through a microstrip main transmission line (303), the other end of the first circular center line (301) is connected with a short-circuit microstrip line (306), the centers of the three arc-shaped bent microstrip lines (302) are on the first circular center line (301), the left and right ends of each arc-shaped bent microstrip line (302) are connected with an output port (304) through a microstrip wall (305), and the width of the microstrip wall (305) is greater than the width of the arc-shaped bent microstrip line (302).
3. The few-cable or cable-less phase shifter of claim 1, wherein, The second microstrip line (7) comprises a second circular center line (701) and three microstrip circular arc arms (702), the centers of the three microstrip circular arc arms (702) are on the second circular center line (701), and the second circular center line (701) and the three microstrip circular arc arms (702) are connected in communication through conductive lines (703).
4. The few-cable or cable-less phase shifter of claim 1, wherein, A plurality of first elastic walls (8) are fixedly connected to the left and right sides of the upper clamping piece (5), a plurality of second elastic walls (9) are fixedly connected to the left and right sides of the lower clamping piece (6), a limiting hole (501) and a mounting hole (502) are arranged on the front and back of the upper clamping piece (5) respectively, and an elastic clamping column (601) and a mounting column (602) are fixedly connected to the front and back of the upper surface of the lower clamping piece (6) respectively.
5. The few-cable or cable-less phase shifter of claim 4, wherein, The upper clamping piece (5) and the first elastic wall (8) are integrally formed, the rear first elastic wall (8) is bent to the front and back, and the front first elastic wall (8) is bent to the front. The lower clamping piece (6) and the second elastic wall (9) are integrally formed, the rear second elastic wall (9) is bent to the front and back, and the front second elastic wall (9) is bent to the front.
6. The few-cable or cable-less phase shifter of claim 1, wherein, Two fixed supports (10) are further included, the left and right sides of the high-frequency PCB board (1) are fixedly connected with the two fixed supports (10) through limiting screws, the front and back of the lower surface of the fixed support (10) are fixedly connected with a stand column (11), the bottom end of the stand column (11) is fixedly connected with an elastic clamping block (12), and the front and back of the upper surface of the fixed support (10) are provided with clamping holes (13) corresponding to the elastic clamping block (12).
7. The few-cable or cable-less phase shifter of claim 6, wherein, The upper surface of the fixed support (10) is fixedly connected with a plurality of cable clamping grooves (14).