Phase shifter

Abstract

The embodiment of the invention discloses a phase shifter. The phase shifter comprises a supporting plate, a circuit board, a transmission structure and an adjusting structure. Wherein the circuit board is placed on the outer side of the supporting plate, the transmission structure is arranged on the other side of the supporting plate, and the adjusting structure is arranged on the outer side of the circuit board and rotationally connected with the circuit board and the supporting plate. The transmission structure comprises a gear, a rack rod and an arc-shaped inner gear, the gear is connected with the rack rod and the arc-shaped inner gear in a meshed mode, and the arc-shaped inner gear is connected with the adjusting structure. The circuit board and the adjusting structure are respectively provided with a first strip line and a second strip line. The movement of the rack rod drives the gear to rotate and drives the arc-shaped inner gear to rotate, and the adjusting structure rotates along with the arc-shaped inner gear, so that different positions of the second strip line and the first strip line of the adjusting structure are contacted and electrically connected, accurate control over phase change is achieved, interference to the strip lines is reduced, cooperation among a plurality of phase shifters is facilitated, and the service life of the phase shifters is prolonged. And the reliability of the phase shifter is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of base station antennas, and in particular to a phase shifter. Background Art

[0002] The mobile communication electrically adjustable antenna is an antenna that can adjust its working parameters without physical movement. The controller can change the phase of its internal phase shifter and adjust the radiation beam inclination angle through remote control of the transmission system to adjust the network area coverage. The most widely used phase shifter is the fan-shaped phase shifter. In the prior art, the fan-shaped phase shifter is driven by a motor to drive the lead screw to move linearly, drive the slider connector to slide or drive the rack rod set on the outside of the circuit board to slide, and convert the linear motion into the circular motion of the slider of the fan-shaped phase shifter.

[0003] However, it is difficult to accurately control the phase change in this transmission process. At the same time, the connection components are stacked above the circuit board of the phase shifter, taking up space and even covering the strip line of the phase shifter, which affects the performance. In addition, since the slider connector and the arc-shaped external gear meshing with the rack rod are arranged above the circuit board of the phase shifter, the distance they need to slide is related to the radius of the circuit board. Phase shifters of different sizes have different moving distances, which are quite different and are not conducive to the coordination between multiple phase shifters. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a phase shifter that can accurately control phase changes, reduce interference on strip lines, facilitate coordination between multiple phase shifters, and improve phase shifter reliability.

[0005] An embodiment of the present invention provides a phase shifter, including:

[0006] Support plate;

[0007] A circuit board is placed outside the support plate, and a first strip line for phase shifting is arranged on the circuit board;

[0008] A transmission structure is arranged on a side of the support plate away from the circuit board, the transmission structure comprises a gear, a rack rod and an arc-shaped internal gear, the gear is rotatably connected to the support plate and is respectively meshed with the rack rod and the arc-shaped internal gear, and the rack rod and the arc-shaped internal gear are located on the same side of the gear;

[0009] An adjusting structure is arranged on the outside of the circuit board and is rotatably connected to the circuit board and the support plate, an end of the adjusting structure is connected to the outside of the arc-shaped internal gear, a second strip line is arranged on the side of the adjusting structure in contact with the circuit board, and the second strip line is in contact and electrically connected with the first strip line;

[0010] The rack rod moves along its length direction and drives the gear to rotate, the gear drives the arc-shaped internal gear to rotate, and the adjustment structure rotates with the arc-shaped internal gear so that the second belt line is electrically connected to different positions of the first belt line for phase shifting.

[0011] Optionally, a connecting portion is extended outwardly in the radial direction from the middle of the arc-shaped internal gear, a connecting piece is protruded from the end of the adjustment structure, and the connecting portion is connected to the connecting piece.

[0012] Optionally, the adjustment structure includes a slide plate and a slide shell, the slide shell is installed on the outer side of the slide plate, and the second strip line electrically connected to the circuit board is arranged on the inner side of the slide plate.

[0013] Optionally, the slide housing comprises a shell and a hook, wherein the hook is arranged at one end of the slide housing close to the connecting member, and the hook is snap-connected to the inner end surface of the slide plate.

[0014] Optionally, a plurality of pressing grooves are formed on the slide housing, and elastic sheets are arranged in the pressing grooves. The elastic sheets push the slide plate so that the second strip line contacts the circuit board.

[0015] Optionally, the phase shifter further includes two limit blocks, the two limit blocks are connected to two ends of the support plate, and the two ends of the rack rod respectively move through the two limit blocks.

[0016] Optionally, a curved edge is formed on one side of the circuit board, and an edge on one side of the support plate is arranged in the same shape as an edge of the circuit board.

[0017] Optionally, the number of the adjustment structure, the circuit board and the support plate is two, which are symmetrically arranged on both sides of the transmission structure in the vertical direction from the outside to the inside, and the arc-shaped internal gear includes two arc-shaped plates with toothed portions, the two arc-shaped plates are connected at both ends and arranged in parallel along the vertical direction, the two arc-shaped plates are respectively connected to the two adjustment structures, and the toothed portions of the two arc-shaped plates are meshed and connected with the gear;

[0018] Among them, the rack rod moves to drive the gear to rotate, and the gear drives the two arc plates to rotate, and the two adjustment structures respectively follow the two arc plates to rotate simultaneously, so that the second strip lines of the two adjustment structures are respectively in contact with different positions of the first strip lines of the two circuit boards to electrically connect for phase shifting.

[0019] Optionally, a connecting portion is provided on the outer side of the arc-shaped plate, and two connecting portions are respectively connected to two adjusting structures, and the rack rod is provided between the two arc-shaped plates and meshes with the gear.

[0020] Optionally, the number of the adjusting structure, the circuit board, the support plate, the gear and the arc-shaped internal gear is two, which are symmetrically arranged on both sides of the rack rod in the horizontal direction. One adjusting structure, one circuit board, one support plate, one gear and one arc-shaped internal gear constitute a group of parallel phase shifting components. In each group of parallel phase shifting components, the arc-shaped internal gear is connected to the adjusting structure and meshed with the gear. Toothed portions are respectively arranged on both sides of the rack rod, which are respectively meshed with the two gears.

[0021] Among them, the rack rod moves to drive the two gears to rotate, the two gears drive the two arc-shaped internal gears to rotate, and the two adjustment structures respectively follow the two arc-shaped internal gears to rotate simultaneously, so that the second strip lines of the two adjustment structures are in electrical contact and connection with different positions of the first strip lines of the two circuit boards to shift the phase.

[0022] Optionally, the number of the adjustment structures, the circuit boards and the support plates is four, the number of the arc-shaped internal gears and the gears is two, two adjustment structures, two circuit boards, two support plates, one arc-shaped internal gear and one gear constitute a set of vertical phase shifting components, the two sets of vertical phase shifting components are symmetrically arranged on both sides of the rack rod in the horizontal direction, the two sides of the rack rod are respectively provided with toothed portions, and the toothed portions are meshed and connected with the two gears of the two sets of vertical phase shifting components;

[0023] Among them, the rack rod moves to drive the two gears to rotate, and the two gears drive the four arc plates of the two arc-shaped internal gears to rotate, and the four adjustment structures respectively follow the four arc plates to rotate simultaneously, so that the second strip lines of the four adjustment components in the two groups of vertical phase shifting components are respectively in contact with different positions of the first strip lines of the four circuit boards to electrically connect for phase shifting.

[0024] Optionally, the two adjustment structures, the two circuit boards, and the two support plates of each group of the vertical phase shifting components are symmetrically arranged on both sides of the gear in the vertical direction from the outside to the inside, and each of the arc-shaped internal gears includes two arc-shaped plates with toothed portions, and the two arc-shaped plates are connected at both ends and arranged in parallel in the vertical direction on both sides of the rack rod in the vertical direction, and the toothed portions of the two arc-shaped plates are meshed with the gears, and a connecting portion is arranged on the outer side of the arc-shaped plate, and the two connecting portions are respectively connected to the two adjustment structures on both sides of the gear in the vertical direction.

[0025] An embodiment of the present invention provides a phase shifter, including a support plate, a circuit board, a transmission structure and an adjustment structure. The circuit board is placed on the outside of the support plate, the transmission structure is arranged on the other side of the support plate, and the adjustment structure is arranged on the outside of the circuit board and is rotatably connected with the circuit board and the support plate. The transmission structure includes a gear, a rack rod and an arc-shaped internal gear, the gear is meshed and connected with the rack rod and the arc-shaped internal gear respectively, and the arc-shaped internal gear is connected with the adjustment structure. A first belt line and a second belt line are respectively arranged on the circuit board and the adjustment structure. The movement of the rack rod drives the gear to rotate, and drives the arc-shaped internal gear to rotate. The adjustment structure rotates with the arc-shaped internal gear, so that the second belt line of the adjustment structure is electrically connected to different positions of the first belt line, so as to realize precise control of phase change, reduce interference on the belt line, facilitate coordination between multiple phase shifters, and improve the reliability of the phase shifter. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and other objects, features and advantages of the present invention will become more apparent through the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

[0027] Figure 1 It is a structural schematic diagram of a sector-shaped phase shifter in the prior art;

[0028] Figure 2 It is a structural schematic diagram of another sector-shaped phase shifter in the prior art;

[0029] Figure 3 is an exploded view of a phase shifter showing a first strip line according to an embodiment of the present invention;

[0030] Figure 4 1 is a schematic structural diagram of a vertical "one-to-two" phase shifter according to an embodiment of the present invention;

[0031] Figure 5 is a schematic diagram of the relationship between the transmission structure and the adjustment structure of an embodiment of the present invention;

[0032] Figure 6 It is a schematic diagram of the relationship between the transmission structure and the adjustment structure after the gear rod is removed in one embodiment of the present invention;

[0033] Figure 7 is a schematic diagram of a transmission structure of an embodiment of the present invention;

[0034] Figure 8 is a bottom view of an adjustment structure of an embodiment of the present invention;

[0035] Fig. 9 is a schematic diagram of the decomposition of the regulating structure of an embodiment of the present invention;

[0036] Fig.10 is a schematic structural diagram of a phase shifter after removing a circuit board and an adjustment structure according to an embodiment of the present invention;

[0037] Fig.11 is a schematic diagram of a single circuit board phase shifter showing a first strip line according to an embodiment of the present invention;

[0038] Fig.12 It is a front view schematic diagram of a horizontal "one-to-two" phase shifter according to an embodiment of the present invention;

[0039] Fig.13 It is a schematic diagram of the back side of a horizontal "one-to-two" phase shifter according to an embodiment of the present invention;

[0040] Fig.14 It is a front view schematic diagram of a "one-to-four" phase shifter according to an embodiment of the present invention;

[0041] Fig.15 It is a schematic diagram of a "one-to-four" phase shifter of an embodiment of the present invention with one side circuit board and support plate removed.

[0042] Description of reference numerals:

[0043] 1-support plate; 2, 2'-circuit board; 21-first belt line; 3-transmission structure; 31-gear; 31'-moving rod; 32, 32'-rack rod; 33-arc-shaped internal gear; 33'-slider connector; 331-connecting part; 332-arc-shaped plate; 34'-slide groove; 35'-arc-shaped external gear; 4-adjustment structure; 4'-slide; 41-slide plate; 42-slide shell; 43-second belt line; 421-shell; 422-hook; 423-elastic sheet; 424-connector; 5-limiting block; 6-rotating shaft; 7-pin shaft. DETAILED DESCRIPTION

[0044] The present application is described below based on embodiments, but the present application is not limited to these embodiments. In the detailed description of the present application below, some specific details are described in detail. It is possible for those skilled in the art to fully understand the present application without the description of these details. In order to avoid confusing the essence of the present application, known methods, processes, flows, components and circuits are not described in detail.

[0045] In addition, persons of ordinary skill in the art will appreciate that the drawings provided herein are for illustration purposes and are not necessarily drawn to scale.

[0046] Unless otherwise clearly defined and specified, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0047] For ease of explanation, spatially relative terms such as "inside", "outside", "below", "below", "lower", "above", "upper", etc. are used herein to describe the relationship of one element or feature illustrated in the figures to another element or feature. It will be understood that spatially relative terms may be intended to include different orientations of the device in use or operation other than the orientation depicted in the figures. For example, if the device in the figure is turned over, an element described as being "below" or "below" other elements or features will then be positioned as being "above" the other elements or features. Thus, the example term "below" can include both the orientations of above and below. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0048] Unless the context clearly requires otherwise, the words "include", "comprising" and similar words throughout the application should be interpreted as including rather than exclusive or exhaustive; that is, the meaning is "including but not limited to".

[0049] In the description of this application, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of this application, unless otherwise specified, the meaning of "plurality" is two or more.

[0050] A mobile communication electrically tunable antenna is an antenna that can adjust its operating parameters without physically moving it. The adjustment of its operating parameters is achieved by changing the position of the ground terminal of the phase shifter. In the antenna, the current will form nodes and antinodes at different positions. The change of the ground terminal position will cause the current nodes and antinodes to move, thereby changing the phase of the antenna signal. The phase shifter is used to adjust the phase of the signal. For an electrically tunable antenna, the position of the ground terminal will affect the effective length of the antenna. The effective length can affect the resonance characteristics of the antenna and determine the operating frequency and radiation characteristics of the antenna. Currently, there are cavity phase shifters, sector phase shifters, etc. Among them, the sector phase shifter has a simple structure, low cost, and high reliability, and has been widely used.

[0051] The phase shifter changes the current distribution of the antenna by changing the effective length of the antenna, thereby changing the phase characteristics of the electrically adjustable antenna. For example, for the circuit board 2 of the electrically adjustable antenna, a first strip line 21 is arranged on its surface, and its two side edges are respectively the input interface and the output interface of the electrical signal, and the grounding end is arranged on the second strip line 43 arranged on the inner side of the slide, and the second strip line 43 is in contact with the first strip line 21 and electrically connected. The first strip line 21 of the sector phase shifter adopts the same arc setting mode as the arc edge of its circuit board 2, and by changing the position of the grounding end connected to the circuit, that is, making one end of the slide rotate along the arc edge of the circuit board 2, the contact point of the second strip line 43 and the first strip line 21 moves along the first strip line 21, thereby changing the position of the grounding end of the phase shifter. The movement of the slide is controlled by the transmission structure 3, and the phase of the core component phase shifter is changed by remotely controlling the transmission structure 3, and the radiation beam inclination angle is adjusted, thereby adjusting the network coverage area.

[0052] The existing fan-shaped phase shifter is driven by a motor to drive the screw rod to move linearly, driving the movable rod 31' connected to the screw rod to slide or driving the rack rod 32' arranged outside the circuit board 2' to slide. Figure 1 A slider connector 33' is fixed on the movable rod 31' and slides therewith. The slider connector 33' is usually arranged between two flat fan-shaped circuit boards 2'. The slide 4' rotates on the two circuit boards 2' respectively, and one end slides in the slide groove 34' of the slider connector 33'. In other words, when the slider connector 33' slides, the slides 4' on both sides are pushed to rotate in the direction of movement of the slider connector 33'. However, since the slide groove 34' only pushes the rotation of the slide 4', in order to avoid excessive resistance that makes it difficult for the slide 4' to move, it is difficult for the slide groove 34' to strictly limit the sliding of one end of the slide 4' in the slide groove 34', but a transmission virtual position is left, so it is difficult to accurately control the phase change.

[0053] For the sector phase shifter using the rack rod 32' disposed outside the circuit board 2', refer to Figure 2 , because it is necessary to ensure that the rotation distance of the slide 4' can cover the entire length of the first belt line, the arc-shaped external gear 35' that matches the rack rod 32' is relatively large in size, and even covers the first belt line, affecting the performance of the fan-shaped phase shifter. At the same time, because the slider connector 33' and the rack rod 32' are both arranged above the surface of the circuit board 2' and are connected to the end of the slide 4' for transmission, the length of the screw rod's movement distance actually depends on the radius of the arc edge of the circuit board 2'. Phase shifters of different sizes have different lengths of movement distances, which are quite different and are not conducive to the coordination between multiple phase shifters. Therefore, it is necessary to avoid the occurrence of virtual positions in the transmission structure of the phase shifter, improve reliability, reduce the influence of the size of the circuit board 2' on the size of the transmission structure, and achieve miniaturization and modular design.

[0054] Figure 3 , Figure 4 Two different appearances of the phase shifter of the present invention are respectively given, wherein Figure 3 The internal structural relationship of the phase shifter is shown by means of explosion decomposition.

[0055] Reference Figure 3 , Figure 4 , Figure 8 The phase shifter of the embodiment of the present invention includes a support plate 1, a circuit board 2, a transmission structure 3 and an adjustment structure 4. The support plate 1 is used to provide support for the installation and movement of other components. When the phase shifter is connected to other structures of an external electrically adjustable antenna, the support plate 1 provides support for the internal structure of the phase shifter. The circuit board 2 is placed on the outside of the support plate 1, and the side thereof provided with the first strip line 21 faces outward, so as to contact the adjustment structure 4. An arc-shaped edge is formed on one side of the circuit board 2, and the edge of one side of the support plate 1 is arranged in the same shape as the edge of the circuit board 2, so as to facilitate phase adjustment by rotating the adjustment structure 4. According to the actual situation, you can choose Figure 3-Figure 4 The different specifications of the support plate 1 and the circuit board 2 are shown in the figure. The transmission structure 3 is arranged on the side of the support plate 1 away from the circuit board 2, and includes a gear 31, a rack rod 32 and an arc-shaped internal gear 33, and the arc-shaped internal gear 33 is connected to the adjustment structure 4. The transmission gear 31 is driven by an external structure such as a screw, and through the meshing between the gear 31 and the rack rod 32 and the arc-shaped internal gear 33, the adjustment structure 4 is driven to move on the circuit board 2, and the contact point between the second strip line 43 and the first strip line 21 in the adjustment structure 4 is changed to achieve the change of the phase of the electric adjustment antenna. According to actual conditions, the phase shifter can also include two limit blocks 5. The two limit blocks 5 are connected to the two ends of the support plate 1, and the two ends of the rack rod 32 are respectively moved through the two limit blocks 5 to limit the rack rod 32 from moving along the straight line where the two limit blocks 5 are located.

[0056] Reference Figure 8 , Fig.10, the adjustment structure 4 is arranged on the outside of the circuit board 2 and is rotatably connected to the circuit board 2 and the support plate 1. According to actual conditions, a rotating shaft 6 with elastic buckles at both ends can be set as the rotating axis of the adjustment structure 4. A second strip line 43 is arranged on the side of the adjustment structure 4 in contact with the circuit board 2, and the second strip line 43 is in contact and electrically connected with the first strip line 21. One end of the second strip line 43 is electrically connected to the external structure and grounded, that is, the second strip line 43 is the grounding end of the phase shifter. The meshing relationship inside the transmission structure 3 avoids the occurrence of virtual positions, can achieve precise control of phase changes, and improves the reliability of the phase shifter. The transmission structure 3 and the adjustment structure 4 are respectively arranged on both sides of the circuit board 2, so that the transmission structure 3 does not block the first strip line 21, thereby avoiding its influence on the performance of the phase shifter. At the same time, the design of the gear 31 meshing with the rack rod 32 and the arc-shaped internal gear 33 simultaneously makes the length of the rack rod 32 only related to the gear 31, but has nothing to do with the radius of the arc-shaped internal gear 33 and the arc-shaped portion of the circuit board 2. The phase shifter can be more modular in design, facilitating the coordination of multiple phase shifting devices and further improving reliability.

[0057] Reference Figure 3 The first strip line 21 and the arc edge of the circuit board 2 adopt the same arc setting. According to actual conditions, the arc formed by the first strip line 21 and the arc edge of the circuit board 2 have the same center. The first strip line 21 extends to both ends of the circuit board 2 and is electrically connected to the input interface and the output interface at the edge respectively. The input interface and the output interface can be electrically connected to the external structure to realize signal transmission. Figure 3 The circuit board 2 shown has a shorter arc edge length, the rotatable range of the adjustment structure 4 is correspondingly smaller, and the arc length of the arc internal gear 33 used is also shorter. Figure 4 A schematic diagram of a phase shifter with a circuit board 2 having a longer arc edge is shown, and the drawing of the first belt line 21 is omitted. The adjustable structure 4 of the phase shifter has a larger rotatable range, and the arc length of the arc-shaped internal gear 33 used is longer. Since the arc-shaped internal gear 33 is not arranged on the side of the support plate 1 where the circuit board 2 is arranged, even if the arc of the arc-shaped internal gear 33 has a longer length, it will not block the first belt line 21, so that the performance of the phase shifter is not affected. For different adjustment lengths, arc-shaped internal gears 33 of the same uniform specification and the same arc length can be selected, which effectively improves the modularity of the phase shifter design.

[0058] by Figure 4 Taking the phase shifter of the circuit board 2 with a longer arc edge as an example, Figure 5-Figure 10 Schematic diagrams of different structures of phase shifters are shown respectively.

[0059] Reference Figure 5-Figure 7The transmission structure 3 includes a gear 31, a rack rod 32 and an arc-shaped internal gear 33. The gear 31 is rotatably connected to the support plate 1 and meshes with the rack rod 32 and the arc-shaped internal gear 33 respectively. The gear 31 rotates with the pin shaft 7 protruding from the support plate 1 as the rotation axis. According to actual conditions, a structure such as an elastic buckle can also be provided as the rotation axis of the gear 31. The rack rod 32 and the arc-shaped internal gear 33 are located on the same side of the gear 31, and both ends thereof penetrate the limit block 5 and are limited. When the phase is shifted, the part of the rack rod 32 provided with the toothed portion basically moves between the two limit blocks 5. A connecting portion 331 extends outwardly in the radial direction from the middle part of the arc-shaped internal gear 33, and a connecting piece 424 is protruded from the end of the sliding shell 42 of the adjustment structure 4. The arc-shaped internal gear 33 and the adjustment structure 4 are connected through the connecting portion 331 and the connecting piece 424. For the arc-shaped internal gear 33, the limit block 5 forms a space between the rack rod 32 and the support plate 1 that can accommodate part of the arc-shaped internal gear 33, thereby limiting the arc-shaped internal gear 33 in the vertical direction; in the horizontal direction, the arc-shaped internal gear 33 is limited by the meshing of the gear 31 and the connection with the adjustment structure 4. Therefore, the arc-shaped internal gear 33 can rotate without being connected to the physical rotating shaft. The rack rod 32 and the arc-shaped internal gear 33 are meshed and connected with the gear 31 together, so the movement of the rack rod 32 can be achieved through the meshing of the rack rod 32 and the gear 31, and the meshing of the gear 31 and the arc-shaped internal gear 33. Transmission without virtual position can be achieved, so that the phase adjustment can be more precise, and the reliability of the phase shifter is improved.

[0060] Reference Figure 5-Figure 6 , Figure 8-Figure 9The adjustment structure 4 includes a slide plate 41 and a slide shell 42, and the slide shell 42 is installed on the outside of the slide plate 41. A second strip line 43 that is in contact and electrically connected with the circuit board 2 is arranged on the inside of the slide plate 41. The part of the second strip line 43 that is not in contact with the first strip line 21 is electrically connected to the external structure and grounded. According to actual conditions, the second strip line 43 can be selected to be electrically connected to the external structure at one end close to its rotation axis. The slide shell 42 includes a shell 421 and a hook 422. The hook 422 is arranged at one end of the slide shell 42 close to the connector 424. The hook 422 is snap-connected with the inner end face of the slide plate 41 to limit the slide plate 41. According to the shapes of the shell 421 and the hook 422, a groove for avoidance can be provided at the end of the slide plate 41 that contacts the hook 422, or no avoidance can be performed. According to actual conditions, a positioning column may be raised on one side of the housing 421 close to the slide plate 41, corresponding to the positioning groove on the slide plate 41, so as to realize the positioning of the slide plate 41. A positioning edge may also be extended from the housing 421 to wrap the edge of the slide plate 41, so as to realize further limiting of the slide plate 41 and protect the edge of the slide plate 41. The connector 424 is arranged at the end of the housing 421. According to actual conditions, the connector 424 may be arranged on both sides of the hook 422 or at the front end of the hook 422, so as to realize the connection between the adjustment structure 4 and the connecting portion 331 of the arc-shaped internal gear 33. Through the connection between the connector 424 and the connecting portion 331, the adjustment structure 4 rotates with the arc-shaped internal gear 33, so that the second belt line 43 and the first belt line 21 are in contact and electrically connected at different positions, so as to realize the precise control of the phase change and improve the reliability of the phase shifter.

[0061] In some embodiments, reference Fig. 9 , a plurality of clamping grooves are provided on the housing 421 of the slide housing 42. An elastic sheet 423 is provided in the clamping groove, so that the shape of the clamping groove is formed into a U shape or a V shape, etc. According to actual conditions, the number of elastic sheets 423 can be set to two, three or more, and their positions correspond to the positions on the second strip line 43 that contact the first strip line 21. The elastic sheet 423 can push the slide plate 41 so that the second strip line 43 is in close contact with the circuit board 2, avoiding virtual connection of the circuit, interfering with the grounding effect, and affecting the performance of the phase shifter.

[0062] For phase shifters with only a single circuit board, refer to Fig.11 and Figure 4-Figure 5 , Figure 7 , Fig.11The structure of the first belt line 21 on the phase shifter is shown in the figure. The rack rod 32 is limited by two limit blocks 5, moves along its length direction and drives the gear 31 meshing with it to rotate. The rotation of the gear 31 drives the arc-shaped internal gear 33 meshing with it to rotate. The arc-shaped internal gear 33 drives the adjustment structure 4 to rotate around the rotating shaft 6 as a whole through the connecting part 331 and the connecting member 424. At this time, the rotation of the arc-shaped internal gear 33 is coaxial with the rotation of the adjustment structure 4, that is, it rotates around the axis where the rotating shaft 6 is located. The slide plate 41 rotates with the arc-shaped internal gear 33, and at the same time, the elastic sheet 423 presses the slide plate 41 so that the second belt line 43 can be in close contact with the first belt line 21. The second belt line 43 is in contact with the first belt line 21 at different positions and is electrically connected, and finally the phase shift is realized. Since the connection between the arc-shaped internal gear 33 and the adjustment structure 4 is actually achieved through the connecting portion 331 and the connecting piece 424, the size and detailed specifications of the meshing between the toothed portion of the arc-shaped internal gear 33 and the gear 31 can be set in a modular manner in phase shifters of different specifications. For circuit boards 2 of different radius sizes, only the length or structure of the connecting portion 331 and the connecting piece 424 needs to be changed, without changing the toothed portion of the arc-shaped internal gear 33 and the gear 31, which can not only achieve precise control of phase change, but also facilitate coordination between multiple phase shifters, thereby improving the reliability of the phase shifter.

[0063] According to the actual phase adjustment requirements, various driving modes can be realized by combining and installing the various components of the phase shifter, such as one rack rod 32 driving the phase adjustment on two circuit boards 2, that is, the "one-to-two" mode; one rack rod 32 driving the phase adjustment on four circuit boards 2, that is, the "one-to-four" mode. The "one-to-two" mode can be realized by arranging the two circuit boards 2 vertically or horizontally.

[0064] For a phase shifter that uses two circuit boards 2 arranged vertically to realize a "one-to-two" mode, refer to Figure 4-7, the number of its adjustment structure 4, circuit board 2 and support plate 1 is two, which are symmetrically arranged on both sides of the transmission structure 3 in the vertical direction from the outside to the inside. Two limit blocks 5 are respectively arranged between the two support plates 1, and the two ends of the rack rod 32 pass through the two limit blocks 5 to be limited, and its toothed portion is arranged on the side facing the gear 31 and meshes with the gear 31. The arc-shaped internal gear 33 includes two arc-shaped plates 332 with toothed portions, and the two arc-shaped plates 332 are connected at both ends and arranged in parallel in the vertical direction, and their toothed portions are meshed and connected with the gear 31. A connecting portion 331 is arranged on the outside of each arc-shaped plate 332, and the two connecting portions 331 are respectively connected to the two connecting pieces 424 of the two adjustment structures 4. According to actual conditions, for each connecting portion 331, the length of the connecting piece 424 extends to its inner end face and stops without continuing to extend. In other words, the connecting pieces 424 of the two connecting portions 331 are not connected. The rack rod 32 is arranged between the two arc plates 332. When the rack rod 32 moves to drive the arc inner gear 33 to rotate, the two connecting parts 331 will not hinder the movement of the rack rod 32. In other words, the two arc plates 332 and the two adjustment structures 4 are symmetrically arranged on both sides of the rack rod 32 in the vertical direction.

[0065] When performing phase shift, refer to Figure 4-Figure 7 , the rack rod 32 moves to drive the gear 31 to rotate, and the gear 31 drives the two arc plates 332 on both sides of the rack rod 32 to rotate, and at the same time, the two adjustment structures 4 respectively follow the two arc plates 332 to rotate simultaneously, so that the second belt lines 43 of the two adjustment structures 4 are respectively in contact with different positions of the first belt lines 21 of the two circuit boards 2 to electrically connect to perform phase shifting. By setting the rack rod 32 between the two circuit boards 2, and driving the gear 31 to drive the two arc plates 332 to rotate, the two circuit boards 2 of the phase shifter can be installed in a vertical direction, and the two circuit boards 2 can share a gear 31 and a rack rod 32, which improves the space utilization of the phase shifter, makes the space layout more compact, and realizes the miniaturization of the phase shifter.

[0066] For a phase shifter that uses two circuit boards 2 arranged in parallel to realize a "one-to-two" mode, refer to Figure 12-13, the number of the adjusting structure 4, the circuit board 2, the support plate 1, the gear 31 and the arc-shaped internal gear 33 is two, and they are symmetrically arranged on both sides of the rack rod 32 in the horizontal direction, wherein one adjusting structure 4, one circuit board 2, one support plate 1, one gear 31 and one arc-shaped internal gear 33 constitute a group of parallel phase-shifting components. The two limit blocks 5 are respectively connected to the two support plates 1, and the rack rod 32 is provided with toothed portions on both sides facing the two groups of parallel phase-shifting components, which are respectively meshed with the two gears 31. According to actual conditions, when the two circuit boards 2 are large in size and the gear 31 is far away from the edge of the circuit board 2, the part of the rack rod 32 with the toothed portion can be extended and translated to both sides, so that the gear 31 of each group of parallel phase-shifting components can be meshed with the gear 31 rod. The arc-shaped internal gear 33 in each group of parallel phase-shifting components is connected to the adjusting structure 4 and meshed with the gear 31. For the arc-shaped internal gear 33, such as Fig.13 As shown, it can be limited in the vertical direction by the rack rod 32 and the support plate 1. The two gears 31 rotate around the two pins 7 of the two support plates 1 respectively. According to the actual situation, when the ends of the pins 7 are provided with elastic buckles, the gears 31 are limited on the support plate 1 by the elastic buckles; when the ends of the pins 7 are not provided with elastic buckles, the gears 31 are limited in the vertical direction by the cooperation between the external structure and the support plate 1 during installation.

[0067] When performing phase shift, refer to Figure 12-13 The rack rod 32 moves to drive the two gears 31 to rotate, and the two gears 31 drive the two arc-shaped internal gears 33 to rotate. The two adjustment structures 4 respectively follow the two arc-shaped internal gears 33 and rotate simultaneously, so that the second strip lines 43 of the two adjustment structures 4 are in electrical contact with different positions of the first strip lines 21 of the two circuit boards 2 to shift the phase.

[0068] For a phase shifter using four circuit boards 2 to realize a "one-to-four" mode, refer to Figure 14-15 , the number of adjustment structures 4, circuit boards 2 and support plates 1 is four, the number of arc-shaped internal gears 33 and gears 31 is two, wherein two adjustment structures 4, two circuit boards 2, two support plates 1, one arc-shaped internal gear 33 and one gear 31 form a set of vertical phase shifting components. The two sets of vertical phase shifting components are symmetrically arranged on both sides of the rack rod 32 in the horizontal direction, and each limit block 5 is respectively connected to the two support plates 1 in the vertical direction and the horizontal direction, that is, the four support plates 1 are respectively connected to the four corners of each limit block 5 on the vertical interface. The rack rod 32 is provided with teeth on both sides facing the two sets of parallel phase shifting components, which are respectively meshed with the two gears 31. According to actual conditions, when the two circuit boards 2 are large in size and the gears 31 are far away from the edges of the circuit boards 2, the part of the rack rod 32 with teeth can be extended and translated to both sides, so that the gears 31 of each set of vertical phase shifting components can be meshed with the gear 31 rod.

[0069] Reference Fig.15 , the two adjustment structures 4, two circuit boards 2, and two support plates 1 of each group of vertical phase shifting components are symmetrically arranged on both sides of the gear 31 in the vertical direction from the outside to the inside, and each arc-shaped internal gear 33 includes two arc-shaped plates 332 with toothed portions, and the two arc-shaped plates 332 are connected at both ends and arranged in parallel along the vertical direction on both sides of the rack rod 32, and their toothed portions are meshed and connected with the gear 31. A connecting portion 331 is arranged on the outside of each arc-shaped plate 332, and the two connecting portions 331 are respectively connected to the two connecting members 424 of the two adjustment structures 4. For each connecting portion 331, the length of the connecting member 424 extends to its inner end surface and stops without continuing to extend. The rack rod 32 is arranged between the two arc-shaped plates 332. When the rack rod 32 moves to drive the arc-shaped internal gear 33 to rotate, the two connecting portions 331 will not hinder the movement of the rack rod 32.

[0070] When performing phase shift, refer to Figure 14-15 , the rack rod 32 moves to drive the two gears 31 of the two groups of vertical phase shifting components to rotate, and the two gears 31 drive the four arc plates 332 of the two arc-shaped internal gears 33 to rotate. The four adjustment structures 4 respectively follow the four arc plates 332 to rotate simultaneously, so that the second strip lines 43 of the four adjustment components in the two groups of vertical phase shifting components are respectively in contact with different positions of the first strip lines 21 of the four circuit boards 2 to electrically connect for phase shifting. For each group of vertical moving components, a rack rod 32 is arranged between the two circuit boards 2, and the adjustment structure 4 is driven by driving the gear 31 to drive the two arc plates 332 to rotate. The two circuit boards 2 can share one gear 31 and rack rod 32, which improves the space utilization of the phase shifter, makes the space layout more compact, and realizes the miniaturization of the phase shifter.

[0071] The embodiment of the present application provides a phase shifter, including a support plate, a circuit board, a transmission structure and an adjustment structure. The circuit board is placed on the outside of the support plate, the transmission structure is arranged on the other side of the support plate, and the adjustment structure is arranged on the outside of the circuit board and is rotatably connected with the circuit board and the support plate. The transmission structure includes a gear, a rack rod and an arc-shaped internal gear, the gear is meshed and connected with the rack rod and the arc-shaped internal gear respectively, and the arc-shaped internal gear is connected with the adjustment structure. A first belt line and a second belt line are respectively arranged on the circuit board and the adjustment structure. The movement of the rack rod drives the gear to rotate, and drives the arc-shaped internal gear to rotate. The adjustment structure rotates with the arc-shaped internal gear, so that the second belt line of the adjustment structure is electrically connected to different positions of the first belt line, so as to realize precise control of phase change, reduce interference on the belt line, facilitate coordination between multiple phase shifters, and improve the reliability of the phase shifter.

[0072] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A phase shifter, characterized in that: The phase shifter comprises: Support plate (1); A circuit board (2) is placed outside the support plate (1), and a first strip line (21) for phase shifting is provided on the circuit board (2); A transmission structure (3) is arranged on a side of the support plate (1) away from the circuit board (2), the transmission structure (3) comprising a gear (31), a rack rod (32) and an arc-shaped internal gear (33), the gear (31) is rotatably connected to the support plate (1), and is meshed with the rack rod (32) and the arc-shaped internal gear (33) respectively, and the rack rod (32) and the arc-shaped internal gear (33) are located on the same side of the gear (31); An adjustment structure (4) is arranged on the outside of the circuit board (2) and is rotatably connected to the circuit board (2) and the support plate (1); an end of the adjustment structure (4) is connected to the outside of the arc-shaped internal gear (33); a second strip line (43) is arranged on the side of the adjustment structure (4) in contact with the circuit board (2); and the second strip line (43) is in contact and electrically connected with the first strip line (21); The rack rod (32) moves along its length direction and drives the gear (31) to rotate, and the gear (31) drives the arc-shaped internal gear (33) to rotate. The adjustment structure (4) rotates following the arc-shaped internal gear (33) so that the second belt line (43) is electrically connected to different positions of the first belt line (21) for phase shifting.

2. The phase shifter according to claim 1, characterized in that: A connecting portion (331) extends outwardly in the radial direction from the middle of the arc-shaped internal gear (33), a connecting piece (424) protrudes from the end of the adjustment structure (4), and the connecting portion (331) is connected to the connecting piece (424).

3. The phase shifter according to claim 2, characterized in that: The adjustment structure (4) comprises a slide plate (41) and a slide shell (42); the slide shell (42) is mounted on the outside of the slide plate (41); and the second strip line (43) which is in electrical contact with the circuit board (2) is arranged on the inside of the slide plate (41).

4. The phase shifter according to claim 3, characterized in that: The slide housing (42) comprises a housing (421) and a hook (422). The hook (422) is arranged at one end of the slide housing (42) close to the connecting piece (424). The hook (422) is snap-connected to the inner end surface of the slide plate (41).

5. The phase shifter according to claim 3, characterized in that: The slide housing (42) is provided with a plurality of clamping grooves, and an elastic sheet (423) is arranged in the clamping groove. The elastic sheet (423) pushes the slide plate (41) so that the second strip line (43) contacts the circuit board (2).

6. The phase shifter according to claim 1, characterized in that: The phase shifter also includes two limit blocks (5), the two limit blocks (5) are connected to the two ends of the support plate (1), and the two ends of the rack rod (32) are respectively movable and penetrate the two limit blocks (5).

7. The phase shifter according to claim 1, characterized in that An arc-shaped edge is formed on one side of the circuit board (2), and an edge on one side of the support plate (1) is arranged in the same shape as an edge of the circuit board (2).

8. The phase shifter according to any one of claims 1 to 7, characterized in that: The number of the adjustment structure (4), the circuit board (2) and the support plate (1) is two, and they are symmetrically arranged on both sides of the transmission structure (3) in the vertical direction from the outside to the inside, and the arc-shaped internal gear (33) includes two arc-shaped plates (332) with toothed portions, and the two arc-shaped plates (332) are connected at both ends and arranged in parallel in the vertical direction, and the two arc-shaped plates (332) are respectively connected to the two adjustment structures (4), and the toothed portions of the two arc-shaped plates (332) are meshed and connected with the gear (31); The rack rod (32) moves to drive the gear (31) to rotate, the gear (31) drives the two arc plates (332) to rotate, and the two adjustment structures (4) respectively follow the two arc plates (332) to rotate simultaneously, so that the second strip lines (43) of the two adjustment structures (4) are respectively in contact with different positions of the first strip lines (21) of the two circuit boards (2) to electrically connect and perform phase shifting.

9. The phase shifter according to claim 8, characterized in that A connecting portion (331) is provided on the outside of the arc-shaped plate (332), and the two connecting portions (331) are respectively connected to the two adjustment structures (4), and the rack rod (32) is provided between the two arc-shaped plates (332) and meshes with the gear (31).

10. The phase shifter according to any one of claims 1 to 7, characterized in that: The number of the adjusting structure (4), the circuit board (2), the support plate (1), the gear (31) and the arc-shaped internal gear (33) is two, and they are symmetrically arranged on both sides of the rack rod (32) in the horizontal direction. One adjusting structure (4), one circuit board (2), one support plate (1), one gear (31) and one arc-shaped internal gear (33) form a group of parallel phase shifting components. In each group of parallel phase shifting components, the arc-shaped internal gear (33) is connected to the adjusting structure (4) and meshed with the gear (31). Toothed portions are respectively arranged on both sides of the rack rod (32) and meshed with the two gears (31) respectively. The rack rod (32) moves to drive the two gears (31) to rotate, the two gears (31) drive the two arc-shaped internal gears (33) to rotate, and the two adjustment structures (4) respectively follow the two arc-shaped internal gears (33) to rotate simultaneously, so that the second strip lines (43) of the two adjustment structures (4) are in electrical contact with different positions of the first strip lines (21) of the two circuit boards (2) to shift phases.

11. The phase shifter according to any one of claims 1 to 7, characterized in that: The number of the adjustment structures (4), the circuit boards (2) and the support plates (1) is four, the number of the arc-shaped internal gears (33) and the gears (31) is two, two adjustment structures (4), two circuit boards (2), two support plates (1), one arc-shaped internal gear (33) and one gear (31) form a set of vertical phase shifting components, the two sets of vertical phase shifting components are symmetrically arranged on both sides of the rack rod (32) in the horizontal direction, the two sides of the rack rod (32) are respectively provided with toothed portions, and the toothed portions are meshed and connected with the two gears (31) of the two sets of vertical phase shifting components; The rack rod (32) moves to drive the two gears (31) to rotate, the two gears (31) drive the four arc plates (332) of the two arc internal gears (33) to rotate, and the four adjustment structures (4) respectively follow the four arc plates (332) to rotate simultaneously, so that the second strip lines (43) of the four adjustment structures (4) in the two groups of vertical phase shifting components are respectively in contact with different positions of the first strip lines (21) of the four circuit boards (2) to electrically connect and perform phase shifting.

12. The phase shifter according to claim 11, characterized in that The two adjustment structures (4), the two circuit boards (2), and the two support plates (1) of each group of the vertical phase shifting components are symmetrically arranged on both sides of the gear (31) in the vertical direction from the outside to the inside, and each arc-shaped internal gear (33) comprises two arc-shaped plates (332) with toothed portions, the two arc-shaped plates (332) are connected at both ends and arranged in parallel along the vertical direction on both sides of the rack rod (32), the toothed portions of the two arc-shaped plates (332) are meshed and connected with the gear (31), and a connecting portion (331) is arranged on the outer side of the arc-shaped plate (332), and the two connecting portions (331) are respectively connected to the two adjustment structures (4) on both sides of the gear (31) in the vertical direction.

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