Combined phase shifter and multi-frequency antenna network system

Abstract

The invention relates to a combined phase shifter and a multi-frequency antenna network system. The combined phase shifter comprises a combiner and at least two stacked phase shifters, and the frequency bands of the phase shifters are different; the combiner comprises a filter circuit and a combining circuit, and the output end of the filter circuit is connected with the input end of the combining circuit; each phase shifter comprises a signal transmission layer and a phase shifting medium slip sheet, and the phase shifting medium slip sheet is used for sliding relative to the corresponding signal transmission layer so as to change the phase of an output signal of the output end of the corresponding signal transmission layer; wherein the electric connection points on the output ends of the two adjacent signal transmission layers are mutually connected through an electric connection piece, and the electric connection piece is connected with the input end of the filter circuit. By adopting the scheme, the yield of the combined phase shifter can be improved.

Description

Technical Field

[0001] The present application relates to the field of antenna technology, and in particular to a combined phase shifter and multi-frequency antenna network system. Background Art

[0002] Phase shifters are the core components of base station antennas. They can adjust the phase distribution of the antenna array so that the signal can be more concentrated in a specific area, thereby improving the coverage and communication quality of wireless communication systems. With the development of communication technology, multi-frequency antennas play an increasingly important role in network coverage. Therefore, the study of combined phase shifters that can output multi-frequency signals has become a hot topic.

[0003] The combined phase shifter in the traditional technology has the problem of low yield due to the high requirement on assembly consistency. Summary of the invention

[0004] Based on this, it is necessary to provide a combined phase shifter and multi-frequency antenna network system with a higher yield rate in response to the above technical problems.

[0005] In a first aspect, the present application provides a combined phase shifter, which includes a combiner and at least two stacked phase shifters, each of which has a different frequency band; the combiner includes a filter circuit and a combining circuit, and the output end of the filter circuit is connected to the input end of the combining circuit; each phase shifter includes a signal transmission layer and a phase shift medium slider, and the phase shift medium slider is used to slide relative to the corresponding signal transmission layer to change the phase of the output signal of the output end of the corresponding signal transmission layer;

[0006] The electrical connection points on the output ends of two adjacent signal transmission layers are connected to each other through an electrical connector, and the electrical connector is connected to the input end of the filter circuit.

[0007] In this embodiment, the electrical connection points on the output ends of two adjacent signal transmission layers are connected to each other through an electrical connector, and the electrical connector is connected to the input end of the filter circuit. In other words, the connection point of the combiner is at the output end of the signal transmission layer, and the energy at this position is relatively small. Therefore, even if the position of the connection point of the combiner is offset, it has little effect on the key performance indicators of the combiner. Therefore, the combined phase shifter in this embodiment has low requirements for assembly consistency, so the yield of the combined phase shifter can be improved.

[0008] In one embodiment, the combined phase shifter includes a housing, in which at least two stacked cavities corresponding to at least two stacked phase shifters are provided, and each phase shifter is accommodated in the corresponding cavity.

[0009] In one embodiment, the number of the phase shifters is three, and the combiner is accommodated in a middle cavity of the three stacked cavities.

[0010] In one embodiment, the number of the phase shifters is two, and the combiner is accommodated in any one of the two stacked cavities.

[0011] In one embodiment, the size of the cavity containing the combiner is larger than the size of the cavity not containing the combiner.

[0012] In one of the embodiments, a partition is provided between two adjacent cavities, and an opening for the power supply connector to pass through is provided on the partition.

[0013] In one embodiment, the combiner circuit includes at least two input terminals and at least one output terminal.

[0014] In a second aspect, the present application provides a combined phase shifter, which includes two stacked first phase shifters and second phase shifters, a first signal transmission circuit, a second signal transmission circuit, a signal transmission branch, and a combining circuit; the first phase shifter and the second phase shifter have different frequency bands; the first phase shifter and the second phase shifter both include a signal transmission layer and a phase shifting medium slider, the phase shifting medium slider is used to slide relative to the corresponding signal transmission layer to change the phase of the output signal of the output end of the corresponding signal transmission layer;

[0015] The output end of the signal transmission layer in the first phase shifter and the output end of the signal transmission layer in the second phase shifter are electrically connected to the input end of the first signal transmission circuit and the input end of the second signal transmission circuit, respectively; the output end of the first signal transmission circuit is connected to the first end of the signal transmission branch, and the electrical connection point on the second end of the signal transmission branch and the electrical connection point on the output end of the second signal transmission circuit are connected to each other through an electrical connector; the input end of the combiner circuit is connected to the electrical connection between the first signal transmission circuit and the signal transmission branch.

[0016] In this embodiment, the electrical connection point on the second end of the signal transmission branch and the electrical connection point on the output end of the second signal transmission circuit are connected to each other through an electrical connector, and the input end of the combiner circuit is connected to the electrical connection between the first signal transmission circuit and the signal transmission branch. In other words, the connection point of the combiner is on one branch. At this position, even if the position of the connection point of the combiner is offset, it has little effect on the key performance indicators of the combiner. Therefore, the combined phase shifter in this embodiment has a lower requirement for assembly consistency, so the yield of the combined phase shifter can be improved.

[0017] In one embodiment, the first signal transmission circuit includes a matching circuit and a filtering circuit; and / or, the second signal transmission circuit includes a matching circuit and a filtering circuit; and / or, the signal transmission branch includes a matching circuit, or the signal transmission branch includes a matching circuit and a filtering circuit.

[0018] In one embodiment, the combiner circuit includes at least two input terminals and at least one output terminal.

[0019] In one embodiment, the combined phase shifter includes a shell, in which a stacked first cavity and a second cavity are provided; the first phase shifter, the first signal transmission circuit, the signal transmission branch and the combining circuit are accommodated in the first cavity; the second phase shifter and the second signal transmission circuit are accommodated in the second cavity.

[0020] In one embodiment, the first cavity and the second cavity have the same size.

[0021] In one of the embodiments, a partition is provided between the first cavity and the second cavity, and an opening for the power supply connector to pass through is provided on the partition.

[0022] In a third aspect, the present application further provides a multi-frequency antenna network system, comprising the combined phase shifter described in any one of the first aspect or the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 is one of the structural schematic diagrams of a combined phase shifter in one embodiment;

[0025] Figure 2 This is a second structural schematic diagram of a combined phase shifter in an embodiment;

[0026] Figure 3 In one embodiment, based on Figure 1 A cross-sectional view of a combined phase shifter in FIG.

[0027] Figure 4 In one embodiment, based on Figure 1 A side view of the combined phase shifter in FIG.

[0028] Figure 5 In one embodiment, based on Figure 1 Schematic diagram of the appearance of the combined phase shifter;

[0029] Figure 6 In one embodiment, based on Figure 1 A perspective view of the combined phase shifter in FIG.

[0030] Figure 7The third structural diagram of a combined phase shifter in one embodiment;

[0031] Figure 8 This is a fourth structural schematic diagram of a combined phase shifter in an embodiment;

[0032] Fig. 9 This is a fifth structural schematic diagram of a combined phase shifter in one embodiment;

[0033] Fig.10 This is a sixth structural schematic diagram of a combined phase shifter in an embodiment;

[0034] Fig.11 In one embodiment, based on Fig. 9 A cross-sectional view of a combined phase shifter in FIG.

[0035] Fig.12 In one embodiment, based on Fig. 9 A side view of the combined phase shifter in FIG.

[0036] Fig.13 In one embodiment, based on Fig. 9 Schematic diagram of the appearance of the combined phase shifter;

[0037] Fig.14 In one embodiment, based on Fig. 9 A perspective view of the combined phase shifter in FIG. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0039] Phase shifters are the core components of base station antennas. They can adjust the phase distribution of the antenna array so that the signal can be more concentrated in a specific area, thereby improving the coverage and communication quality of wireless communication systems. With the development of communication technology, multi-frequency antennas play an increasingly important role in network coverage. Therefore, the study of combined phase shifters that can output multi-frequency signals has become a hot topic.

[0040] The combined phase shifter in the conventional technology includes two phase shifters, the output ends of the two phase shifters are connected to a filter circuit, the output end of the filter circuit corresponding to each phase shifter is connected to a common output end through a conductor, wherein each filter circuit, conductor and common output end can be regarded as a combiner.

[0041] However, based on the combined phase shifter designed in this way, the common output end in the combiner carries two frequency band signals, and the connection points of the combiner are relatively sensitive. Slight changes (such as poor contact and position offset) will affect the key performance indicators of the combiner (such as standing wave ratio). Therefore, the combined phase shifter in traditional technology has high assembly consistency requirements, that is, high assembly accuracy requirements, so there is a problem of low yield.

[0042] In addition, the output end of the filter circuit in the combined phase shifter in the traditional technology is connected to the common output end output, and its circuit layout will be greatly limited, making it difficult to fully utilize the effective space. This is because the size of the filter circuit in the filter circuit and the size of the matching circuit in the matching circuit are often related to the frequency. To realize a combined phase shifter for multi-frequency signals, it is necessary to consider the bandwidth and use multiple filter circuits of varying numbers. Therefore, the stripline layout needs to be asymmetric, that is, the stripline in a certain cavity needs to be laid with more functional lines, and the functional striplines in the other cavity are relatively few. As a result, for dual cavities of equal width, it will be difficult to fully utilize the effective space.

[0043] Based on this, it is necessary to propose effective technical means to solve the above technical problems. The technical solution of the present application and how the technical solution of the present application solves the above technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0044] In one embodiment, the present application proposes that the connection point of the combiner is at the output end of the phase shifter, as follows:

[0045] like Figure 1 and Figure 2 As shown, a structural schematic diagram of a combined phase shifter is provided, wherein: Figure 1 An example is a combined phase shifter comprising two phase shifters, Figure 2 Exemplified is a combined phase shifter comprising three phase shifters.

[0046] The combined phase shifter includes a combiner 100 and at least two stacked phase shifters 200, each phase shifter 200 has a different frequency band; the combiner 100 includes a filter circuit 101 and a combiner circuit 102, the output end of the filter circuit 101 is connected to the input end of the combiner circuit 102; each phase shifter 200 includes a signal transmission layer 201 and a phase shift medium slide 202, the phase shift medium slide 202 is used to slide relative to the corresponding signal transmission layer 201 to change the phase of the output signal of the output end of the corresponding signal transmission layer 201; wherein the electrical connection points P on the output ends of two adjacent signal transmission layers 201 are connected to each other through an electrical connector 300, and the electrical connector 300 is connected to the input end of the filter circuit 101.

[0047] The combiner 100 is used to combine signals of multiple frequency bands into one channel, and there is a gap between the signals of each frequency band. The filter circuit 101 in the combiner 100 includes multiple filter branches. Figure 1 and Figure 2 Four filter branches are used as an example; each filter branch can be an open-circuit branch or a short-circuit branch; the filter branch can filter different frequency bands. The combining circuit 102 in the combiner 100 includes a signal transmission line for transmitting the output signals of at least two stacked phase shifters 200. Of course, the combiner 100 also includes a matching circuit 103 to achieve impedance matching of the antenna.

[0048] The electrical connector 300 may be a conductor, and specifically may be a signal transmission line.

[0049] The working principle of the phase shifter 200 is as follows: the phase shift medium slider 202 is placed on opposite sides of the signal transmission layer 201, and the phase shift medium slider 202 can slide along the wiring direction of the signal transmission layer 201. Changing the position and coverage area of ​​the signal transmission layer 201 covered by the phase shift medium slider 202 will affect the dielectric constant of the propagating signal, thereby generating different phase delays for the signal transmitted on the signal transmission layer 201. Therefore, by sliding the phase shift medium slider 202 to different positions, a phase shift effect can be achieved.

[0050] In this embodiment, the working principle of the combined phase shifter is as follows: after the signal of each frequency band is input from the input end of the signal transmission layer 201 in the corresponding phase shifter 200, it is transmitted to the output end of the corresponding signal transmission layer 201. The signal at the output end of the signal transmission layer 201 far from the input end of the filter circuit 101 is transmitted to the filter circuit 101 along the electrical connector 300; the signal at the output end of the signal transmission layer 201 close to the input end of the filter circuit 101 is directly transmitted to the filter circuit 101. The signals of each frequency band transmitted to the filter circuit 101 are then transmitted to the combiner circuit 102 and then output.

[0051] It should be noted that the combined phase shifter may be detachable or non-detachable. In the case where the combined phase shifter is detachable, specifically, the input end of the filter circuit 101 in the combiner 100 and the electrical connector 300 are detachable, and / or the electrical connector 300 and the output end of each signal transmission layer 201 are detachable. In addition, the specific form of the above connection may be welding, riveting, screw connection or coupling, the same below.

[0052] In this embodiment, the electrical connection points P on the output ends of two adjacent signal transmission layers 201 are connected to each other through the electrical connector 300, and the electrical connector 300 is connected to the input end of the filter circuit 101. In other words, the connection point of the combiner is at the output end of the signal transmission layer 201, and the energy at this position is relatively small. Therefore, even if the position of the connection point of the combiner is offset, it has little effect on the key performance indicators of the combiner (such as the standing wave ratio). Therefore, the combined phase shifter in this embodiment has a low requirement on assembly consistency, so the yield of the combined phase shifter can be improved.

[0053] In one embodiment, if Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the combined phase shifter further includes a housing 400, wherein: Figure 3-Figure 6 The examples are based on Figure 1 The cross-sectional view, side view, appearance schematic view and perspective view of the combined phase shifter in FIG.

[0054] At least two stacked cavities 401 corresponding to at least two stacked phase shifters 200 are disposed in the housing 400 , and each phase shifter 200 is accommodated in the corresponding cavity 401 .

[0055] A partition 402 is disposed between two adjacent cavities 401 , and an opening (not shown in the figure) is disposed on the partition 402 for the power supply connector 300 to pass through. In other words, the partition 402 divides the cavity in the housing 400 into at least two stacked cavities 401 .

[0056] When the number of the phase shifters 200 is two, the number of the corresponding cavities 401 is also two, and the combiner 100 can be accommodated in any one of the two stacked cavities 401 .

[0057] When the number of the phase shifters is three, the number of the corresponding cavities 401 is also three, and the combiner 100 can be accommodated in the middle cavity of the three stacked cavities 401 .

[0058] The sizes of the cavities 401 may be equal or unequal, wherein the size of the cavity 401 refers to the volume of the cavity 401. Preferably, the size of the cavity 401 containing the combiner 100 is larger than the size of the cavity 401 not containing the combiner 100, so as to realize the miniaturized design of the combined phase shifter.

[0059] In one embodiment, if Figure 3-Figure 6 As shown, the width of the cavity 401 containing the combiner 100 is smaller than the width of the cavity 401 not containing the combiner 100; the width is the length along the direction x shown in the figure.

[0060] Optionally, the length of the cavity 401 containing the combiner 100 may be the same as the length of the cavity 401 not containing the combiner 100, or may be greater than or less than the length of the cavity 401 not containing the combiner 100; the length is the length along the direction y shown in the figure.

[0061] Optionally, the height of the cavity 401 containing the combiner 100 may be the same as the height of the cavity 401 not containing the combiner 100, or may be greater than or less than the height of the cavity 401 not containing the combiner 100; the height is the length along the direction z shown in the figure.

[0062] Preferably, the length of the cavity 401 containing the combiner 100 may be the same as the length of the cavity 401 not containing the combiner 100 , and the height of the cavity 401 containing the combiner 100 may be the same as the height of the cavity 401 not containing the combiner 100 .

[0063] In one embodiment, if Figure 7 As shown, another structural schematic diagram of a combined phase shifter including two phase shifters is provided; the combining circuit 102 includes at least two input terminals and at least one output terminal.

[0064] The number of input terminals of the combiner circuit 102 is related to the number of phase shifters 200 . Specifically, the number of input terminals of the combiner circuit 102 is equal to the number of phase shifters 200 .

[0065] The output terminal of the combiner circuit 102 may be one or at least two. Figure 7 In the example, the combining circuit 102 includes two output terminals. When the combining circuit 102 has at least two output terminals, the combining circuit 102 further includes a power divider (not shown in the figure), and the input terminal of the power divider is connected to the output terminal of the signal transmission line in the combining circuit 102. The power divider includes at least two output terminals, and the power divider is used to divide the input signal into at least two paths, and the at least two divided signals are output through at least two output terminals in the power divider.

[0066] In one embodiment, the present application proposes that the connection point of the combiner is on the branch line, as follows:

[0067] like Figure 8As shown, a structural schematic diagram of another combined phase shifter is provided, which includes two stacked first phase shifters 801 and second phase shifters 802, a first signal transmission circuit 803, a second signal transmission circuit 804, a signal transmission branch 805 and a combining circuit 806; the first phase shifter 801 and the second phase shifter 802 have different frequency bands; the first phase shifter 801 and the second phase shifter 802 both include a signal transmission layer 80a and a phase shifting medium slider 80b, and the phase shifting medium slider 80b is used to slide relative to the corresponding signal transmission layer 80a to change the phase of the output signal of the output end of the corresponding signal transmission layer 80a.

[0068] The output end of the signal transmission layer 80a in the first phase shifter 801 and the output end of the signal transmission layer 80a in the second phase shifter 802 are electrically connected to the input end of the first signal transmission circuit 803 and the input end of the second signal transmission circuit 804, respectively; the output end of the first signal transmission circuit 803 is connected to the first end of the signal transmission branch 805, and the electrical connection point P1 on the second end of the signal transmission branch 805 and the electrical connection point P2 on the output end of the second signal transmission circuit 804 are interconnected through the electrical connector 807; the input end of the combiner circuit 806 is connected to the electrical connection between the first signal transmission circuit 803 and the signal transmission branch 805.

[0069] Among them, the first signal transmission circuit 803, the second signal transmission circuit 804, the signal transmission branch 805 and the combining circuit 806 can be regarded as components of a combiner.

[0070] In this embodiment, the working principle of the combined phase shifter is as follows: for the first phase shifter 801, after the signal is input from the input end of the signal transmission layer 80a in the first phase shifter 801, it is transmitted to the output end of the signal transmission layer 80a in the first phase shifter 801; the signal is transmitted to the combining circuit 806 along the first signal transmission circuit 803 and then output. Similarly, for the second phase shifter 802, after the signal is input from the input end of the signal transmission layer 80a of the second phase shifter 802, it is transmitted to the output end of the signal transmission layer 80a of the second phase shifter 802; the signal is transmitted to the electrical connector 807 along the second signal transmission circuit 804, and the signal is transmitted to the combining circuit 806 along the electrical connector 807 and then output.

[0071] In this embodiment, the electrical connection point P1 on the second end of the signal transmission branch 805 and the electrical connection point P2 on the output end of the second signal transmission circuit 804 are connected to each other through the electrical connector 807, and the input end of the combiner circuit 806 is connected to the electrical connection between the first signal transmission circuit 803 and the signal transmission branch 805. In other words, the connection point of the combiner is on one branch. At this position, even if the position of the connection point of the combiner is offset, it has little effect on the key performance indicators of the combiner. Therefore, the combined phase shifter in this embodiment has a lower requirement on assembly consistency, so the yield of the combined phase shifter can be improved.

[0072] In one embodiment, if Figure 8 and Fig. 9 As shown, the first signal transmission circuit 803 includes a matching circuit 81a and a filtering circuit 81b; and / or, the second signal transmission circuit 804 includes a matching circuit 82a and a filtering circuit 82b; and / or, the signal transmission branch 805 includes a matching circuit 83a, or the signal transmission branch 805 includes a matching circuit 83a and a filtering circuit 83b.

[0073] Among them, the filter circuit 81b, the filter circuit 82b and the filter circuit 83b each include at least one filter branch.

[0074] Figure 8 In the example, the first signal transmission circuit 803 includes a matching circuit 81a and two filter branches, the second signal transmission circuit 804 includes a matching circuit 82a and two filter branches, and the signal transmission branch 805 includes a matching circuit 83a. It can be seen that the electrical connection point of the combiner is located on the branch, specifically on the matching circuit between the combining point (the input terminal connection point of the combining circuit 806) and the filter branch.

[0075] Fig. 9 In the example, the first signal transmission circuit 803 includes a matching circuit 81a and two filter branches, the second signal transmission circuit 804 includes a matching circuit 82a and a filter branch, and the signal transmission branch 805 includes a matching circuit 83a and a filter branch. It can be seen that the electrical connection point of the combiner is located on the branch, specifically on the matching circuit between the two filter branches.

[0076] Therefore, by setting the electrical connection point of the combiner on the branch line, the position of the electrical connection point of the combiner is more flexible, so that the line layout of the combined phase shifter is more flexible and has more optimization space, thereby reducing the line size and reducing the cost of the combined phase shifter.

[0077] In one embodiment, based on Figure 8 Provides such as Fig.10A schematic diagram of the structure of another combined phase shifter is shown. The combining circuit 806 includes at least two input terminals and at least one output terminal.

[0078] The number of input terminals of the combining circuit 806 is related to the number of phase shifters. Specifically, the number of input terminals of the combining circuit 806 is equal to the number of phase shifters. Therefore, since the combined phase shifter includes two stacked first phase shifters 801 and second phase shifters 802, the number of input terminals of the combining circuit 806 can be two. Of course, the number of input terminals of the combining circuit 806 can be more than two, in case other phase shifters are added later.

[0079] The output terminal of the combiner circuit 806 may be one or at least two. Figure 8 In the example, the combining circuit 806 includes two output terminals. When the combining circuit 806 has at least two output terminals, the combining circuit 806 further includes a power divider (not shown in the figure), and the input terminal of the power divider is connected to the output terminal of the signal transmission line in the combining circuit 806. The power divider includes at least two output terminals, and the power divider is used to divide the input signal into at least two paths, and the at least two divided signals are output through at least two output terminals in the power divider.

[0080] In one embodiment, if Fig.11 , Fig.12 , Fig.13 and Fig.14 As shown, the combined phase shifter includes a housing 900, wherein: Figure 11-Figure 14 Examples include those based on Fig. 9 The combined phase shifter shown is a cross-sectional view, a side view, an appearance schematic view and a perspective view.

[0081] The housing 900 is provided with a stacked first cavity 901 and a second cavity 902 ; the first phase shifter 801 , the first signal transmission circuit 803 , the signal transmission branch 805 and the combining circuit 806 are accommodated in the first cavity 901 ; the second phase shifter 802 and the second signal transmission circuit 804 are accommodated in the second cavity 902 .

[0082] Among them, the first signal transmission circuit 803, the second signal transmission circuit 804, the signal transmission branch 805 and the combining circuit 806 can be regarded as components of the combiner, so the components of the combiner are distributed in the two cavities. In other words, the components of the combiner distributed in the two cavities constitute a combiner through the electrical connector 807.

[0083] A partition 903 is provided between the first cavity 901 and the second cavity 902, and an opening (not shown in the figure) is provided on the partition 903 for the power supply connector 807 to pass through. In other words, the cavity in the housing 900 is divided into two stacked first cavities 901 and second cavities 902 by the partition 903.

[0084] The sizes of the first cavity 901 and the second cavity 902 may be equal or unequal. Preferably, the sizes of the first cavity 901 and the second cavity 902 are equal.

[0085] The combined phase shifter based on any one of the above combined phase shifter embodiments realizes an integrated design of the combiner and the phase shifter, has higher transmission efficiency, and can effectively improve the antenna radiation efficiency.

[0086] In one embodiment, the present application further provides a multi-frequency antenna network system, which includes the combined phase shifter in any of the above-mentioned combined phase shifter embodiments.

[0087] In the above embodiment, the combined phase shifter realizes an integrated design of the combiner and the phase shifter, which does not require the use of an additional combiner. Compared with the prior art, the amount of cables in the multi-frequency antenna network system is reduced.

[0088] It should be noted that, unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present application. The terms used herein in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0089] It is understood that the terms "first", "second", etc. used in this application may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish a first element from another element. For example, without departing from the scope of this application, a first resistor may be referred to as a second resistor, and similarly, a second resistor may be referred to as a first resistor. Both the first resistor and the second resistor are resistors, but they are not the same resistor.

[0090] It can be understood that the “connection” in the following embodiments should be understood as “electrical connection”, “communication connection”, etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

[0091] It can be understood that “at least one” means one or more, “plurality” means two or more, and “at least a portion of an element” means a part or all of an element.

[0092] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" and the like specify the presence of stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. At the same time, the term "and / or" used in this specification includes any and all combinations of the relevant listed items.

[0093] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0094] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A combined phase shifter, characterized in that: The combined phase shifter includes a combiner and at least two stacked phase shifters, and each of the phase shifters has a different frequency band; The combiner includes a filter circuit and a combiner circuit, the output end of the filter circuit is connected to the input end of the combiner circuit; each of the phase shifters includes a signal transmission layer and a phase shift medium slide, the phase shift medium slide is used to slide relative to the corresponding signal transmission layer to change the phase of the output signal of the output end of the corresponding signal transmission layer; The electrical connection points on the output ends of two adjacent signal transmission layers are connected to each other through an electrical connector, and the electrical connector is connected to the input end of the filter circuit.

2. The combined phase shifter according to claim 1, characterized in that: The combined phase shifter comprises a shell, in which at least two stacked cavities corresponding to the at least two stacked phase shifters are arranged, and each of the phase shifters is accommodated in the corresponding cavity.

3. The combined phase shifter according to claim 2, characterized in that: The number of the phase shifters is three, and the combiner is accommodated in a middle layer cavity among the three stacked cavities.

4. The combined phase shifter according to claim 2, characterized in that: The number of the phase shifters is two, and the combiner is accommodated in any one cavity of the two stacked cavities.

5. The combined phase shifter according to claim 3 or 4, characterized in that: The size of the cavity containing the combiner is larger than the size of the cavity not containing the combiner.

6. The combined phase shifter according to claim 2, characterized in that: A partition is arranged between two adjacent cavities, and an opening for the electrical connector to pass through is arranged on the partition.

7. The combined phase shifter according to claim 1, characterized in that: The combining circuit includes at least two input terminals and at least one output terminal.

8. A combined phase shifter, characterized in that: The combined phase shifter comprises two stacked first phase shifters and a second phase shifter, a first signal transmission circuit, a second signal transmission circuit, a signal transmission branch and a combining circuit; the frequency bands of the first phase shifter and the second phase shifter are different; The first phase shifter and the second phase shifter each include a signal transmission layer and a phase shift medium slide, wherein the phase shift medium slide is used to slide relative to the corresponding signal transmission layer to change the phase of the output signal of the output end of the corresponding signal transmission layer; The output end of the signal transmission layer in the first phase shifter and the output end of the signal transmission layer in the second phase shifter are electrically connected to the input end of the first signal transmission circuit and the input end of the second signal transmission circuit, respectively; the output end of the first signal transmission circuit is connected to the first end of the signal transmission branch, and the electrical connection point on the second end of the signal transmission branch and the electrical connection point on the output end of the second signal transmission circuit are connected to each other through an electrical connector; the input end of the combiner circuit is connected to the electrical connection between the first signal transmission circuit and the signal transmission branch.

9. The combined phase shifter according to claim 8, characterized in that: The first signal transmission circuit includes a matching circuit and a filtering circuit; and / or, The second signal transmission circuit includes a matching circuit and a filtering circuit; and / or, The signal transmission branch includes a matching circuit, or the signal transmission branch includes a matching circuit and a filtering circuit.

10. The combined phase shifter according to claim 8, characterized in that: The combining circuit includes at least two input terminals and at least one output terminal.

11. The combined phase shifter according to claim 8, characterized in that: The combined phase shifter comprises a housing, in which a first cavity and a second cavity are stacked; The first phase shifter, the first signal transmission circuit, the signal transmission branch and the combining circuit are accommodated in the first cavity; The second phase shifter and the second signal transmission circuit are accommodated in the second cavity.

12. The combined phase shifter according to claim 11, characterized in that: The first cavity and the second cavity have the same size.

13. The combined phase shifter according to claim 11, characterized in that: A partition is provided between the first cavity and the second cavity, and an opening for the electrical connector to pass through is provided on the partition.

14. A multi-frequency antenna network system, characterized in that: A combined phase shifter comprising any one of claims 1-7 or 8-13.

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