Phase shifter and antenna system

Abstract

The present invention provides a phase shifter and antenna system, which relates to the field of communication technology. The phase shifter includes: a dielectric substrate, and a feeder network arranged on the dielectric substrate; the feeder network includes a phase shift network and a mobile network; the mobile network includes a phase shifter, and a transmission mechanism for transmitting the phase shifter; the phase shifter and the phase shifter network are separated by a preset coupling gap in the vertical direction, and the phase shifter is used to move along a preset path under the drive of the transmission mechanism, and change the coupling distance with the phase shifter network to switch the working state of the phase shifter, wherein the working state includes a phase shift state and a broken state. The phase shifter and antenna system provided by the present invention can realize the switching of the working state of the phase shifter by moving the phase shifter without introducing other structures, so the volume of the phase shifter can be reduced, which is not only helpful for antenna layout, but also helpful for meeting the power consumption reduction requirements of the electrically adjustable antenna.

Description

Technical Field

[0001] The present invention relates to the technical field of communications, and in particular to a phase shifter and an antenna system. Background Art

[0002] The construction of 5G (5th-Generation, the fifth generation of mobile communication technology) networks is in full swing, and the application demand for 5G antenna products is also rapidly iterating. Among them, 5G electrically-adjustable antennas have reduced the number of ports compared to conventional 5G antennas, which reduces the R&D cost to a certain extent. However, 5G electrically-adjustable antennas still consume too much power in actual applications, so the demand for electrically-adjustable antennas based on power consumption reduction follows. Among them, phase shifters have become the key core modules in 5G electrically-adjustable antennas as 5G demand grows.

[0003] Usually, phase shifters are used to change the downtilt angle of the antenna, thereby facilitating the optimization of network coverage. At present, commonly used phase shifters mostly change the phase by changing the length of the medium covering the transmission line. When implemented, multiple phase shifters are often required to meet the use requirements, resulting in a larger volume of the entire antenna system. It is not only unsuitable for 5G antenna layout, but also difficult to meet the power consumption reduction requirements of 5G electrically adjustable antennas. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a phase shifter and an antenna system to alleviate the above technical problems.

[0005] In a first aspect, an embodiment of the present invention provides a phase shifter, comprising: a dielectric substrate, and a feeder network arranged on the dielectric substrate; the feeder network comprises a phase shifting network and a moving network; the moving network comprises a phase shifter, and a transmission mechanism for transmitting the phase shifter; wherein the phase shifter and the phase shifting network are separated by a preset coupling gap in the vertical direction, and the phase shifter is used to move along a preset path under the drive of the transmission mechanism, so as to change the coupling distance between the phase shifter and the phase shifting network, so as to switch the working state of the phase shifter, wherein the working state comprises a phase shifting state and a broken state.

[0006] Preferably, in a possible implementation, the mobile network further comprises a switch network; wherein the switch network and the phase shift network are separated by a preset coupling gap in the vertical direction; and the switch network is used to move under the drive of the transmission mechanism to adjust the impedance of the phase shifter.

[0007] Preferably, in a possible implementation manner, the above-mentioned phase-shifting network is provided with a main feeder and a branch feeder, wherein the branch feeder is used to connect to the antenna radiation unit, and includes a first branch feeder and a second branch feeder; the first branch feeder is connected to the main feeder, and the second branch feeder is separated from the main feeder and the first branch feeder.

[0008] Preferably, in a possible implementation manner, one end of the main feeder is provided with a phase-shifting main port, and the other end of the main feeder is connected to the first branch feeder; the first branch feeder is provided with a non-phase-shifting branch port, and the second branch feeder is provided with a phase-shifting branch port, and both the phase-shifting branch port and the non-phase-shifting branch port are used to connect to the antenna radiation unit.

[0009] Preferably, in a possible implementation manner, one end of the first feeder line away from the non-phase-shifted branch port is arranged in parallel with one end of the second feeder line away from the phase-shifted branch port; the phase shifter is used to generate coupling at one end where the first feeder line and the second feeder line are arranged in parallel.

[0010] Preferably, in a possible implementation manner, the phase shifter includes a first dielectric plate and a U-shaped circuit arranged on the first dielectric plate; one end of the U-shaped circuit corresponds to the first branch feed line, and the other end of the U-shaped circuit corresponds to the second branch feed line.

[0011] Preferably, in a possible implementation manner, the transmission mechanism includes a first transmission unit for transmitting the phase shifter, and a second transmission unit for transmitting the switch network; the phase shifter is driven by the first transmission unit to move along a preset path on the dielectric substrate; the switch network is driven by the second transmission unit to move along a preset path on the dielectric substrate.

[0012] Preferably, in a possible implementation manner, the phase-shifting network further includes an isolation network corresponding to the first feeder line; wherein the isolation network is arranged at an end of the first feeder line away from the non-phase-shifting branch port, and is at a preset distance from the first feeder line.

[0013] Preferably, in a possible implementation manner, the phase shifter further includes a protection circuit connected to the main feeder; the protection circuit is used to perform grounding protection on the phase shifter.

[0014] In a second aspect, an embodiment of the present invention further provides an antenna system, which includes a plurality of antenna radiating units and also includes the phase shifter described in the first aspect; the antenna radiating unit is connected to the phase shifter.

[0015] The embodiments of the present invention bring the following beneficial effects:

[0016] The phase shifter and antenna system provided by the embodiment of the present invention include a dielectric substrate and a feeder network arranged on the dielectric substrate; wherein the feeder network includes a phase shifting network and a moving network; the moving network includes a phase shifter and a transmission mechanism for transmitting the phase shifter; specifically, the phase shifter and the phase shifter network are separated by a preset coupling gap in the vertical direction, and the phase shifter can move along a preset path driven by the transmission mechanism to change the coupling gap between the phase shifter and the phase shifter network to switch the working state of the phase shifter, and the working state of the phase shifter includes a phase shifting state and a broken state. When the phase shifter moves, the phase shifter can be switched between these two states, so that the connected antenna radiating unit presents different states of fully participating in radiation or partially participating in radiation, thereby meeting the application requirements of the antenna in different scenarios. At the same time, since the switching of the working state can be achieved only by moving the phase shifter without introducing other structures, it is also helpful to reduce the volume of the phase shifter, which is not only helpful for antenna layout, but also helpful to meet the power consumption reduction requirements of the electrically adjustable antenna.

[0017] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description, claims and drawings.

[0018] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 A schematic diagram of the structure of a phase shifter provided by an embodiment of the present invention;

[0021] Figure 2 A schematic diagram of the structure of another phase shifter provided by an embodiment of the present invention;

[0022] Figure 3 A schematic diagram of a phase shifter in a fractured state according to an embodiment of the present invention;

[0023] Figure 4 A schematic diagram of a small tilt angle structure of a phase shifter provided in an embodiment of the present invention;

[0024] Figure 5 A schematic diagram of a large tilt angle structure of a phase shifter provided in an embodiment of the present invention;

[0025] Figure 6 A schematic diagram of the layout structure of radiation units of an antenna system provided in an embodiment of the present invention;

[0026] Figure 7 A Smith chart simulation result of a phase shifter provided by an embodiment of the present invention;

[0027] Figure 8 A Smith chart simulation result of another phase shifter provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0029] At present, 5G electrically-adjustable antennas often have the problem of excessive power consumption in practical applications. Therefore, the demand for electrically-adjustable antennas based on power consumption reduction has arisen, and the phase shifter has become a key core module in 5G electrically-adjustable antennas as 5G demand grows. However, the existing phase shifter structure is relatively complex, which is not convenient for array arrangement and difficult to ensure overall stability. Based on this, a phase shifter and antenna system provided in an embodiment of the present invention can effectively alleviate the above problems.

[0030] To facilitate understanding of this embodiment, a phase shifter disclosed in an embodiment of the present invention is first introduced in detail.

[0031] In a possible implementation manner, an embodiment of the present invention provides a phase shifter, specifically, as follows: Figure 1 A schematic structural diagram of a phase shifter is shown, and the phase shifter includes: a dielectric substrate 110, and a feeder network arranged on the dielectric substrate.

[0032] Specifically, the feeder network in the embodiment of the present invention includes a phase shifting network 100 and a moving network 200; wherein the moving network includes a phase shifting sheet 201 and a transmission mechanism ( Figure 1 not shown).

[0033] In a specific implementation, the phase shifter 201 and the phase shifter network 100 are separated by a preset coupling gap in the vertical direction. The phase shifter is used to move along a preset path driven by a transmission mechanism to change the coupling distance between the phase shifter and the phase shifter network to switch the working state of the phase shifter, wherein the working state of the phase shifter includes a phase shift state and a broken state.

[0034] For ease of understanding, Figure 1 Only a schematic diagram of a top view of the phase shifter is shown, and based on Figure 1 As shown in the schematic diagram, the phase shift network is attached to the dielectric substrate, the phase shift network is separated from the mobile network, and the preset path of the phase shift sheet is in the left and right direction on the dielectric substrate, that is, Figure 1 As shown in the dotted line part, the phase shifter can move left and right on the dielectric substrate driven by the transmission mechanism. Assuming that the plane where the dielectric substrate is located is the XY plane, the phase shifter and the phase shift network are separated by a preset coupling gap in the vertical direction, which is equivalent to the phase shifter and the phase shift network having a certain coupling gap in the Z-axis direction, so that the phase shifter can slide left and right on the XY plane to form the above-mentioned phase shifter.

[0035] Furthermore, when the phase shifter moves left and right on the dielectric substrate driven by the transmission mechanism, within the phase shift stroke range, the overlapping part of the phase shifter and the phase shift network is coupled. At this time, the working state of the phase shifter is the phase shift state. As the moving distance of the phase shifter is different, the length of the overlapping part of the phase shifter and the phase shift network is also different, that is, the coupling distance is also different. The coupling distance changes with the movement of the phase shifter, and the phase shift state can be adjusted. When the phase shifter moves to be separated from the phase shift network, it constitutes a broken state. Therefore, the change of the working state of the phase shifter can be achieved by moving the phase shifter.

[0036] In actual use, the above-mentioned phase shift network can be connected to the corresponding antenna radiating units. The movement of the phase shifter can make the connected antenna radiating units fully or partially participate in the radiation. For example, in the phase shift state, the antenna radiating units fully participate in the radiation, and in the broken state, the antenna radiating units partially participate in the radiation, and so on. It can meet the radiation requirements of the antenna system.

[0037] Therefore, the phase shifter provided in the embodiment of the present invention includes a dielectric substrate and a feeder network arranged on the dielectric substrate; wherein the feeder network includes a phase shifting network and a moving network; the moving network includes a phase shifter and a transmission mechanism for transmitting the phase shifter; specifically, the phase shifter and the phase shifter network are separated by a preset coupling gap in the vertical direction, and the phase shifter can move along a preset path driven by the transmission mechanism to change the coupling gap between the phase shifter and the phase shifter network to switch the working state of the phase shifter, and the working state of the phase shifter includes a phase shifting state and a broken state. When the phase shifter moves, the phase shifter can be switched between these two states so that the connected antenna radiation unit presents different states of fully participating in radiation or partially participating in radiation, thereby meeting the application requirements of the antenna in different scenarios. At the same time, since the switching of the working state can be achieved only by moving the phase shifter without introducing other structures, it also helps to reduce the volume of the phase shifter, which not only helps to carry out antenna layout, but also helps to meet the power consumption reduction requirements of the electrically adjustable antenna.

[0038] In actual use, in addition to the above-mentioned phase shifter, the above-mentioned moving network usually also includes a switch network; wherein the switch network and the phase shifter network are also separated by a preset coupling gap in the vertical direction; and the switch network can be moved under the drive of the transmission mechanism to adjust the impedance of the phase shifter. Specifically, for ease of understanding, in Figure 1 On the basis of Figure 2 Another schematic diagram of the structure of a phase shifter is shown, and the top view of the phase shifter is also used as an example for explanation. Figure 1 In addition to the various structures shown, a switch network 202 is also included.

[0039] Specifically, in an embodiment of the present invention, the preset path of the switch network is also set to move in the left and right directions on the dielectric substrate, that is, relative to the XY plane where the dielectric substrate is located, the switch network also has a certain coupling gap with the phase shift network in the Z-axis direction, so that it can slide to adjust the impedance.

[0040] In actual use, the switch network can move synchronously with the phase shifter, or can move asynchronously with the phase shifter. The switch network can usually be pressed onto the main circuit of the phase shifter. In addition, the switch network can be configured as a whole line (such as an ultra-low impedance line), or as multiple lines (such as multiple groups of higher impedance lines at certain intervals), or as a non-rectangular line (such as an L-shaped line), etc. The specific line form of the switch network can be set according to actual usage conditions, and the embodiments of the present invention are not limited to this.

[0041] In actual use, the above-mentioned phase shifting network is usually connected to the antenna radiating unit of the antenna system, and there are usually multiple antenna radiating units, which are arranged in the form of an array to achieve phase adjustment through a phase shifter. In order to achieve electrical connection between the phase shifting network and the antenna radiating unit, the phase shifting network is usually provided with a main feeder and a branch feeder, and the branch feeder also includes a first branch feeder and a second branch feeder; the first branch feeder is connected to the main feeder, and the second branch feeder is separated from the main feeder and the first branch feeder.

[0042] For ease of understanding, Figure 3 FIG. 4 shows a schematic diagram of the structure of another phase shifter. Specifically, Figure 3 What is shown in the figure is a schematic diagram of the structure of the phase shifter in a broken state, including a main feeder 101, a first branch feeder 102 and a second branch feeder 103. Specifically, one end of the main feeder is provided with a phase-shifting main port 104, and the other end of the main feeder is connected to the first branch feeder; the first branch feeder 102 is provided with a non-phase-shifting branch port 105, and the second branch feeder 103 is provided with a phase-shifting branch port 106, wherein the phase-shifting branch port and the non-phase-shifting branch port are both used to connect to the antenna radiation unit.

[0043] Further, in Figure 3 In the embodiment, the end of the first feed line 102 away from the non-phase-shifted branch port is arranged in parallel with the end of the second feed line 103 away from the phase-shifted branch port; the phase shifter is used to generate coupling at the end where the first feed line and the second feed line are arranged in parallel, that is, Figure 3 In the figure, the right sides of the main feeder 101, the first branch feeder 102 and the second branch feeder 103 are parallel.

[0044] In actual use, in order to facilitate the movable setting of the phase shifter and the switch network, the phase shifter and the switch network are usually set on the corresponding dielectric plate, and the movable setting of the phase shifter and the switch network is realized through the cooperation between the dielectric plate and the transmission mechanism. Therefore, the above-mentioned phase shifter usually includes a first dielectric plate and a U-shaped line set on the first dielectric plate; one end of the U-shaped line corresponds to the first branch feeder, and the other end of the U-shaped line corresponds to the second branch feeder.

[0045] Specifically, Figure 3 As shown, the first dielectric plate 203 and the U-shaped line 204 include a phase shifter, and the open side of the U-shaped line 204 faces the phase shifter network, that is, one end corresponds to the first branch feeder line, and the other end corresponds to the second branch feeder line.

[0046] further, Figure 3 The switch network is also shown in FIG. Figure 3As shown, in the embodiment of the present invention, a network line 206 of the switch network and a second dielectric plate 205 where the network line 206 is located are shown, and corresponding to the above-mentioned phase shifter and the switch network, the above-mentioned transmission mechanism includes a first transmission unit for transmitting the phase shifter and a second transmission unit for transmitting the switch network, wherein, due to Figure 3 The diagram shows a top view of the phase shifter. Therefore, the first transmission unit and the second transmission unit are Figure 3 Not shown.

[0047] Specifically, the phase shifter is driven by the first transmission unit to move along a preset path on the dielectric substrate; the switch network is driven by the second transmission unit to move along a preset path on the dielectric substrate. In actual use, the first dielectric plate of the phase shifter is fixedly connected to the first transmission unit, and the second dielectric plate of the switch network is fixedly connected to the second transmission unit. In addition, the first transmission unit and the second transmission unit can be configured to cooperate with each other in the form of a slide rail and a slide groove. For example, corresponding slide rails are provided on the first dielectric plate and the second dielectric plate, and matching slide grooves are provided on the dielectric substrate, etc. At the same time, corresponding transmission devices are provided in combination to realize the movement of the phase shifter and the switch network on the dielectric substrate. In addition, when moving, the phase shifter and the switch network can move synchronously or asynchronously, such as moving at a certain multiple of speed, etc. The specific transmission mechanism and the relative movement mode of the phase shifter and the switch network can be set according to actual usage conditions, and the embodiments of the present invention are not limited to this.

[0048] Further, if Figure 3 As shown, the above-mentioned phase-shifting network further includes an isolation network 107 corresponding to the first feeder line; wherein the isolation network 107 is arranged at an end of the first feeder line away from the non-phase-shifting port and is at a preset distance from the first feeder line. Figure 3 As shown, the isolation network 107 generally refers to a line isolated from the first branch feeder line, which can maintain balance when the switch network and the phase shift network are pressed together.

[0049] In addition, if Figure 3 As shown, the phase shifter of the embodiment of the present invention further includes a protection circuit 108 connected to the main feeder 101; the protection circuit is used to provide grounding protection for the phase shifter. Specifically, the protection circuit is usually a DC grounding lightning protection circuit to increase the stability of the entire phase shifter.

[0050] Further, based on Figure 3 The phase shifter shown in the figure is used to facilitate understanding of the process of switching the working state of the phase shifter. Figure 4 and Figure 5 Schematic diagrams of phase shifters are shown respectively, specifically, Figure 4 and Figure 5The diagram shows the phase shifter and the switch network moving to different positions, where: Figure 4 The diagram shows a small angle schematic diagram of the phase shifter, that is, a small angle structural schematic diagram of the phase shifter. At this time, the coupling distance between the phase shifter and the phase shift network is long, and the physical length of the phase shifting port 106 is short, that is, the relative phase difference with the non-phase shifting port 105 is small. Figure 5 What is shown is a schematic diagram of a phase shifter at a large angle, that is, a schematic diagram of a large-angle structure of a phase shifter. At this time, the coupling distance between the phase shifter and the phase shift network is short, and the physical length of the phase shift branch port 106 is long, that is, the relative phase difference with the non-phase shift branch port 105 becomes larger.

[0051] Specifically, Figure 4 As shown, it only shows Figure 3 The numbers of some structures in the figure include a switch network 202, a phase shifter 201, a phase shift main port 104, a non-phase shift branch port 105, and a phase shift branch port 106, and also include a main feeder 101 of the phase shifter, a first branch feeder 102 where the non-phase shift branch port 105 is located, a second branch feeder 103 where the phase shift branch port 106 is located, and one end of the first branch feeder 102 and the second branch feeder 103 ( Figure 4 The right end shown in FIG. 1 is arranged parallel to one side of the main line of the main feeder, and the isolation network 107 is spaced a certain distance from the first branch feeder 102, which can keep the pressing balanced; in addition, Figure 4 The device also includes a protection circuit 108 and a dielectric substrate 110. The protection circuit 108 is a DC grounding lightning protection line.

[0052] In specific implementation, Figure 4 In the example, the synchronous movement of the switch network 202 and the phase shifter 201 is used for explanation. The switch network 202 and the phase shifter 201 can move left and right under the drive of the transmission mechanism. When they move to a position close to the main feeder, that is, Figure 4 When the position is on the left side of the center, the above Figure 4 The case of a small phase shifter angle.

[0053] Further, when the switch network 202 and the phase shifter 201 are driven by the transmission mechanism to move away from the main feeder, that is, toward Figure 4 When moving to the right as shown, a large angle of the phase shifter can be formed, that is, Figure 5 The schematic diagram of the phase shifter at a large angle is shown. That is, the switch network 202 and the phase shifter 201 of the mobile network are relatively far away from the entire phase shift network. Figure 5 It is also shown in Figure 3 The reference numerals of some structures in the figure include a first dielectric plate 203 and a U-shaped line 204, as well as a switch network 202 and a second dielectric plate 205 where the switch network is located.

[0054] in, Figure 4 and Figure 5 The working states of the phase shifters shown are all phase shift states, that is, the switch network 202 and the phase shifter 201 are coupled to the phase shift network to a certain extent. Figure 5 On the basis of the switching network 202 and the phase shifter 201, driven by the transmission mechanism, continue to move away from the main feeder, that is, toward Figure 5 When moving to the right as shown, the switch network 202 and the phase shifter 201 can be moved away from the phase shift network, even if the phase shifter is switched to a broken state.

[0055] Specifically, the fracture state corresponds to Figure 3 In the case shown, at this time, the switch network 202 and the phase shifter 201 slide out synchronously, and the first branch feeder 102 and the second branch feeder 103 cannot be electrically connected through the U-shaped line of the phase shifter. At this time, since the second branch feeder is separated from the main feeder and the first branch feeder, the phase shift port of the second branch feeder no longer works in the broken state. In addition, at this time, the position of the U-shaped line is in the gap between the first branch feeder 102 and the isolation network 107, and a sufficient safety distance is left with the first branch feeder 102 to avoid contact caused by position deviation. The half-wavelength line on the side of the first branch feeder 102 parallel to the main feeder is only used as a parallel open-circuit branch of the non-phase shift port 105 that continues to work. At this time, the switch network 202 is far away from the main feeder and has no coupling connection with it, so that the impedance of the main feeder changes from low impedance to high impedance, achieving impedance matching in the broken state.

[0056] Therefore, the phase shifter of the embodiment of the present invention is actually a switch-breakable phase shifter, which has a conventional phase shifting function and can switch the breaking function, and is equipped with a switch network to adjust the impedance matching of the two application scenarios. Therefore, the phase shifter of the embodiment of the present invention can simultaneously meet the two application requirements of 5G electrically adjustable antennas: all vibrators participate in radiation and some vibrators participate in radiation, and the matching effect is good. In addition, since the phase shifter and the switch network themselves can be moved without introducing other structures, the phase shifter of the embodiment of the present invention can be light in structure and relatively small in size, which is convenient for array arrangement, and can be suitable for 5G antenna layouts with many ports, with high consistency, and can also ensure the stability of the overall structure.

[0057] Furthermore, based on the above embodiments, an embodiment of the present invention also provides an antenna system, which includes multiple antenna radiating units and also includes the phase shifter described in the above embodiments; the antenna radiating unit is connected to the phase shifter.

[0058] For ease of understanding, Figure 6 A schematic diagram of the structure of an antenna system is shown. Specifically, Figure 6 Take the front radiation unit array layout diagram of the 5G electrically adjustable antenna as an example to illustrate. Figure 6The number of antenna radiating elements of the antenna system shown in is also limited. Specifically, Figure 6 As shown, 601 is the first group of antenna radiating units, 602 is the second group of antenna radiating units, 603 is the third group of antenna radiating units, and 604 is the fourth group of antenna radiating units; every two groups correspond to a phase shifter, assuming that 601 and 604 are the antenna radiating units fed by the phase-shifted ports in the two groups of phase shifters, and 602 and 603 are the antenna radiating units fed by the non-phase-shifted ports in the two groups of phase shifters.

[0059] Therefore, in the phase-shifted state, 601 to 604 all participate in radiation, which is the normal working mode; in the broken state, the second branch feeder is separated from the main feeder and the first branch feeder. At this time, the phase-shift branch port is disconnected, so that the antenna radiating units fed by the phase-shift branch port no longer participate in radiation, and only the antenna radiating units included in 602 and 603 continue to radiate. That is, in the two states, the two application requirements of all antenna radiating units participating in radiation and half of the antenna radiating units participating in radiation of the 5G electrically adjustable antenna are realized.

[0060] further, Figure 7 and Figure 8 A schematic diagram of simulation results of a phase shifter is also shown, wherein: Figure 7 This is the Smith chart of the phase-shift state and the break state when the switching network is not introduced. The solid line corresponds to the large, medium and small angles of the phase-shift state, and the dotted line corresponds to the break state. It can be seen that the two are symmetrical about the center of the circle and it is difficult to converge synchronously. Figure 8 This is the Smith chart of the phase-shift state and the break state after the switch network is added. The solid line corresponds to the large, medium and small angles of the phase-shift state, and the dotted line corresponds to the break state. It can be seen that they converge at the center of the circle and match well.

[0061] It should be understood that the phase shifter and antenna system provided in the above embodiment are only one possible implementation mode provided in the embodiment of the present invention. In other implementation modes, different settings may be provided. For example, the above switch network is not limited to the form of a whole line (ultra-low impedance line), but may also be a multi-segment line (multiple groups of higher impedance lines at certain intervals), or a non-rectangular line (L-shaped line or others), etc.; the length of one side of the feeder line of the phase shifter is not limited to half a wavelength, but may also be an integer multiple thereof; the switch network is not limited to synchronous movement with the phase shifter, but may also move at a multiple speed; the broken state is not limited to leaving only two or three groups of antenna elements to participate in radiation; in addition, in the antenna system, the phase shifter is not limited to the first group / fourth group of the antenna radiating unit being the front array; the phase shifter is not limited to a one-to-two U-shaped phase shifter; the implementation form of the phase shifter is not limited to a microstrip line attached to the surface of the dielectric plate, etc., and can be specifically set according to actual usage conditions, and the embodiment of the present invention does not limit this.

[0062] In summary, the phase shifter and antenna system provided by the embodiments of the present invention, the phase shifter can realize a breakable phase shifter with a switch, within the phase shift travel range in the phase shift state, the switch network can move synchronously with the phase shifter, and the switch network is pressed together with the main circuit of the phase shifter network; in the broken state, the switch network can also slide out with the phase shifter, and be unconnected and uncoupled with the phase shifter network. The removal of the switch network can make the parallel impedance higher, thereby achieving good matching after state switching. Therefore, it can meet the application switching of the 5G electrically adjustable antenna power consumption reduction scenario.

[0063] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the antenna system described above can refer to the corresponding process in the aforementioned embodiment, and will not be repeated here.

[0064] In addition, in the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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, and it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0065] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0066] Finally, it should be noted that the above embodiments are only specific implementations of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art should understand that any person skilled in the art can still modify the technical solutions recorded in the above embodiments within the technical scope disclosed by the present invention, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A phase shifter, characterized in that: include: A dielectric substrate, and a feeder network arranged on the dielectric substrate; The feeder network includes a phase shifting network and a moving network; The mobile network includes a phase-shifting sheet and a transmission mechanism for transmitting the phase-shifting sheet; In which, the phase shifter and the phase shift network are separated by a preset coupling gap in the vertical direction, and the phase shifter is used to move along a preset path under the drive of the transmission mechanism, so as to change the coupling distance between the phase shifter and the phase shifter network to switch the working state of the phase shifter, wherein the working state includes a phase shift state and a broken state, and when the phase shifter and the phase shifter network overlap within the phase shift stroke range of the phase shifter, the working state of the phase shifter is the phase shift state, and when the phase shifter moves to be separated from the phase shifter network, it constitutes the broken state.

2. The phase shifter according to claim 1, characterized in that: The mobile network further comprises a switch network; wherein the switch network and the phase shift network are separated by a preset coupling gap in the vertical direction; The switch network is used to move under the drive of the transmission mechanism to adjust the impedance of the phase shifter.

3. The phase shifter according to claim 2, characterized in that: The phase shift network is provided with a main feeder and a branch feeder, wherein the branch feeder is used to connect to the antenna radiation unit, and includes a first branch feeder and a second branch feeder; the first branch feeder is connected to the main feeder, and the second branch feeder is separated from the main feeder and the first branch feeder.

4. The phase shifter according to claim 3, characterized in that: One end of the main feeder is provided with a phase-shifting main port, and the other end of the main feeder is connected to the first branch feeder; The first feeder line is provided with a non-phase-shifting branch port, and the second feeder line is provided with a phase-shifting branch port, and both the phase-shifting branch port and the non-phase-shifting branch port are used to connect to the antenna radiation unit.

5. The phase shifter according to claim 4, characterized in that: An end of the first feeder line away from the non-phase-shifting branch port is arranged in parallel with an end of the second feeder line away from the phase-shifting branch port; The phase shifter is used to generate coupling at one end where the first branch feed line and the second branch feed line are arranged in parallel.

6. The phase shifter according to any one of claims 3 to 5, characterized in that: The phase shifter comprises a first dielectric plate and a U-shaped circuit arranged on the first dielectric plate; One end of the U-shaped line corresponds to the first feeder line, and the other end of the U-shaped line corresponds to the second feeder line.

7. The phase shifter according to claim 2, characterized in that: The transmission mechanism comprises a first transmission unit for transmitting the phase shifter, and a second transmission unit for transmitting the switch network; The phase shifter is driven by the first transmission unit to move along a preset path on the dielectric substrate; The switch network is driven by the second transmission unit to move along a preset path on the dielectric substrate.

8. The phase shifter according to claim 3, characterized in that: The phase shift network further includes an isolation network corresponding to the first feeder line; The isolation network is arranged at an end of the first feeder line away from the non-phase-shifted branch port, and is at a preset distance from the first feeder line.

9. The phase shifter according to claim 3, characterized in that: The phase shifter further includes a protection circuit connected to the main feeder; the protection circuit is used for performing grounding protection on the phase shifter.

10. An antenna system, characterized in that: The antenna system comprises a plurality of antenna radiating units, and further comprises the phase shifter according to any one of claims 1 to 9; The antenna radiation unit is connected to the phase shifter.

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