Power divider, feed network and antenna system

Abstract

The invention provides a power divider, a feed network and an antenna system.The power divider comprises a metal floor and a metal strip line, the metal strip line is arranged on one side of the metal floor in the direction perpendicular to the metal floor, and the metal strip line comprises a power dividing node, an input port, a first output port and a second output port; the metal strip line between the power division node and the first output port is a first output line, the metal strip line between the power division node and the second output port is a second output line, the two output lines respectively comprise a first node and a second node, and the metal strip lines on the two sides of the first node and the second node are different in impedance. And the difference between the length of the metal strip line between the power division node and the first node and the length of the metal strip line between the power division node and the second node is an integral multiple of a quarter working wavelength of the antenna system. According to the power divider, the feed network and the antenna system provided by the embodiment of the invention, reflection standing waves of the power divider, the feed network and the antenna system can be reduced.

Description

Technical Field

[0001] The present application relates to the field of wireless technology, and in particular to a power divider, a feeding network and an antenna system. Background Art

[0002] The feed network is the core component of the base station antenna. The feed network adjusts the downtilt angle of the antenna beam by changing the phase of the radiating unit. The standing wave and tolerance level of the feed network affect the standing wave level of the antenna, and the standing wave level of the antenna is an important factor affecting the stability and reliability of the antenna performance.

[0003] The power divider is an important component of the feed network. Existing power dividers mainly include two types: T-junction power dividers and Wilkinson power dividers. The processing accuracy of the T-junction power divider is likely to cause changes in standing waves, which will cause fluctuations in the feed network and antenna standing waves. The Wilkinson power divider uses a resistor to connect the two output lines. The resistor has the function of absorbing reflected standing waves. However, when the input power of the Wilkinson power divider is large, the resistor is easy to burn out, affecting the absorption of standing waves.

[0004] Therefore, it is necessary to provide a power divider to reduce standing waves in the feed network and the antenna. Summary of the invention

[0005] The present application provides a power divider, a feeding network and an antenna system, which can reduce standing waves in the power divider, the feeding network and the antenna system.

[0006] In a first aspect, a power divider is provided, which is applied to an antenna system, wherein the power divider comprises: a metal floor; a metal strip line, wherein the metal strip line is arranged on one side of the metal floor along a direction perpendicular to the metal floor, the metal strip line comprises a power division node, an input port, a first output port, and a second output port, and the power division node is used to transmit a signal input from the input port to the first output port and the second output port, respectively; the metal strip line between the power division node and the first output port is a first output line, the first output line comprises a first node, and the metal strip lines on both sides of the first node have different impedances, the metal strip line between the power division node and the second output port is a second output line, the second output line comprises a second node, and the metal strip lines on both sides of the second node have different impedances, and the difference between the length of the metal strip line between the power division node and the first node and the length of the metal strip line between the power division node and the second node is an integer multiple of one quarter of the working wavelength of the antenna system.

[0007] In the embodiments provided in the present application, the impedances of the metal strip lines on both sides of the first node on the first output line are different, the impedances of the metal strip lines on both sides of the second node on the second output line are different, and the difference between the length of the metal strip line between the power splitter node and the first node and the length of the metal strip line between the power splitter node and the second node is an integer multiple of one-quarter of the operating wavelength, which can make the phase difference of the reflected standing waves in the first output line and the second output line 180°, realize the cancellation of the reflected standing waves in the power splitter, the feeding network and the antenna system, improve the standing wave tolerance level of the power splitter, the feeding network and the antenna system, and enhance the performance of the power splitter, the feeding network and the antenna system.

[0008] In combination with the first aspect, in some implementations of the first aspect, the metal strip lines on both sides of the first node have different line widths, and / or the metal strip lines on both sides of the second node have different line widths.

[0009] In the embodiments provided in the present application, by setting the metal strip lines on both sides of the first node to have different line widths, and / or the metal strip lines on both sides of the second node to have different line widths, the phase of the reflected standing wave on the metal strip line can be adjusted to achieve cancellation of the reflected standing wave.

[0010] In combination with the first aspect, in certain implementations of the first aspect, the metal stripline width between the first node and the second node is greater than the metal stripline width between the first node and the first output port and greater than the metal stripline width between the second node and the second output port, or, the metal stripline width between the first node and the second node is less than the metal stripline width between the first node and the first output port and less than the metal stripline width between the second node and the second output port.

[0011] In the embodiments provided in the present application, the width of the metal strip line between the first node and the second node is greater than or less than the width of the metal strip line between the first node and the first output port and the width of the metal strip line between the second node and the second output port. This can adjust the phase of the reflected standing wave on the metal strip line to achieve the cancellation of the reflected standing wave and reduce the processing complexity of the power divider.

[0012] In combination with the first aspect, in some implementations of the first aspect, the power divider further includes a first medium, at least a portion of the first medium is disposed between the metal strip line and the metal floor, and at least a portion of the metal strip line is supported on the first medium.

[0013] In the embodiment provided in the present application, a first medium is arranged between the metal strip line and the metal floor, which can support the metal strip line. At least a portion of the metal strip line is carried on the first medium, and the distribution of the first medium can also be changed in different areas of the metal strip line, so that there are areas with different impedances on the first output line and the second output line, so as to adjust the phase difference of the reflected standing wave on the metal strip line and achieve the cancellation of the reflected standing wave.

[0014] In combination with the first aspect, in certain implementations of the first aspect, in the first output line, the metal strip line located on one side of the first node is carried on the first medium, and the metal strip line located on the other side of the first node is not carried on the first medium, and / or, in the second output line, the metal strip line located on one side of the second node is carried on the first medium, and the metal strip line located on the other side of the second node is not carried on the first medium.

[0015] In the embodiments provided in the present application, the distribution of the first medium changes on both sides of the first node and / or the second node, which can change the impedance of the metal strip line on both sides of the first node and / or the second node, and then adjust the phase of the reflected standing wave on the metal strip line to achieve the cancellation of the reflected standing wave.

[0016] In combination with the first aspect, in some implementations of the first aspect, the first medium is in a strip shape, and the first medium can move along a line connecting the first node and the second node.

[0017] In the embodiment provided in the present application, the first medium is in a strip shape and can move along the line connecting the first node and the second node, which can achieve both the cancellation of the reflected standing wave and the adjustment of the phase.

[0018] In combination with the first aspect, in certain implementations of the first aspect, the first medium includes a first slot body, and in the first output line, the metal strip line located on one side of the first node is carried on the first medium, and the metal strip line located on the other side of the first node is arranged on the first slot body, and / or, in the second output line, the metal strip line located on one side of the second node is carried on the first medium, and the metal strip line located on the other side of the second node is located on the first slot body.

[0019] In combination with the first aspect, in certain implementations of the first aspect, the first medium includes a first region and a second region, and a dimension of the first region in a direction perpendicular to the metal floor is larger than a dimension of the second region in a direction perpendicular to the metal floor; in the first output line, the metal strip line located on one side of the first node is carried on the first region, and a gap exists between the metal strip line located on the other side of the first node and the second region, and / or, in the second output line, the metal strip line located on one side of the second node is carried on the first region, and a gap exists between the metal strip line located on the other side of the second node and the second region.

[0020] In the embodiments provided in the present application, the first medium includes a first slot body, or the first medium includes a first region and a second region, so that the power divider can adapt to different product forms and achieve standing wave cancellation.

[0021] In combination with the first aspect, in some implementations of the first aspect, the power divider also includes a third output port, the metal strip line between the power division node and the third output port is a third output line, and the impedance of each point on the third output line is the same.

[0022] In the embodiment provided in the present application, when the power divider includes three output ports, it is only necessary to set a node with discontinuous impedance change on the first output line and the second output line, or to set a node with discontinuous impedance change on any two of the output lines, so as to achieve standing wave cancellation on the entire power divider, without setting a node with discontinuous impedance change on the third output line, which can simplify the structure of the power divider and reduce processing complexity.

[0023] In combination with the first aspect, in certain implementations of the first aspect, the power divider also includes a third output port, the metal strip line between the power division node and the third output port is a third output line, the third output line includes a third node, the metal strip line impedances on both sides of the third node are different, the length of the metal strip line between the power division node and the third node, and the difference between the length of the metal strip line between the power division node and the first node is an integer multiple of one-quarter of the operating wavelength of the antenna system, or the length of the metal strip line between the power division node and the third node, and the difference between the length of the metal strip line between the power division node and the second node is an integer multiple of one-quarter of the operating wavelength of the antenna system.

[0024] In combination with the first aspect, in certain implementations of the first aspect, in the third output line, the metal strip line located on one side of the third node is carried on the first medium, and the metal strip line located on the other side of the third node is not carried on the first medium.

[0025] In combination with the first aspect, in some implementations of the first aspect, the metal strip lines on two sides of the third node have different line widths.

[0026] In the embodiment provided in the present application, when the power divider includes three output ports, nodes with discontinuous impedance changes can also be set on the three output lines, and nodes with discontinuous impedance changes can exist on any two of the output lines, and the requirements for the difference in metal strip line lengths are met, which can improve the flexibility of the power divider structure setting and enable the power divider to adapt to different product forms.

[0027] In combination with the first aspect, in certain implementations of the first aspect, the power divider also includes a first power division part and / or a second power division part, the first power division part is connected to the first output port, and the first output port is the input port of the first power division part, and the second power division part is connected to the second output port, and the second output port is the input port of the second power division part.

[0028] In combination with the first aspect, in some implementations of the first aspect, the impedance at any position on the first power division part is the same, and / or the impedance at any position on the second power division part is the same.

[0029] In the embodiments provided in the present application, the first output port and the second output port of the power divider are respectively connected to the first power dividing part and the second power dividing part. When the power divider has a more complex structure, for example, when the power divider is a one-to-four structure, it is only necessary to set a node with discontinuous impedance change on the line where the two output ports of the power divider are located to achieve standing wave cancellation on the entire power divider, without setting a node with discontinuous impedance change on the first power dividing part and the second power dividing part, which can simplify the structure of the power divider and reduce processing complexity.

[0030] In combination with the first aspect, in some implementations of the first aspect, the power divider includes a metal cavity, the metal cavity encloses a containing space, the metal strip line and the first medium are arranged in the containing space, and the metal floor is a portion of the metal cavity stacked with the metal strip line.

[0031] In combination with the first aspect, in some implementations of the first aspect, the number of the first mediums is at least two, and the at least two first mediums are respectively arranged on both sides of the metal strip line along a direction perpendicular to the metal strip line.

[0032] In the embodiment provided in the present application, the power divider includes a metal cavity, and the metal strip line, the first medium and the supporting medium are arranged in the metal cavity, so that the power divider can adapt to different product forms.

[0033] In combination with the first aspect, in some implementations of the first aspect, the metal strip line is a printed circuit board structure, or the metal strip line is a sheet metal strip line fixed by a plastic medium.

[0034] In a second aspect, a feeding network is provided, wherein the feeding network includes a power divider as described in the first aspect or any one implementation manner of the first aspect.

[0035] In a third aspect, an antenna system is provided, comprising a feeding network as described in the first aspect or any one of the implementations of the first aspect, and one or more antenna elements, wherein the feeding network is connected to the antenna elements. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the system architecture provided by the embodiment of the present application;

[0037] Figure 2 is a schematic diagram of the internal structure of the antenna system provided in an embodiment of the present application;

[0038] Figure 3 is a structural schematic diagram of a power divider provided in an embodiment of the present application;

[0039] Figure 4 is a structural schematic diagram of a power divider provided in an embodiment of the present application;

[0040] Figure 5 is a structural schematic diagram of a power divider provided in an embodiment of the present application;

[0041] Figure 6 is a structural schematic diagram of a power divider provided in an embodiment of the present application;

[0042] Figure 7 is a structural schematic diagram of a power divider provided in an embodiment of the present application;

[0043] Figure 8 is a structural schematic diagram of a power divider provided in an embodiment of the present application;

[0044] Fig. 9 is a structural schematic diagram of a power divider provided in an embodiment of the present application;

[0045] Fig.10 is a structural schematic diagram of a power divider provided in an embodiment of the present application;

[0046] Fig.11 is a structural schematic diagram of a power divider provided in an embodiment of the present application;

[0047] Fig.12 is a structural schematic diagram of a power divider provided in an embodiment of the present application;

[0048] Fig.13 is a structural schematic diagram of a power divider provided in an embodiment of the present application;

[0049] Fig.14 is a structural schematic diagram of a power divider provided in an embodiment of the present application;

[0050] Fig.15 is a structural schematic diagram of a power divider provided in an embodiment of the present application;

[0051] Fig.16 It is a structural schematic diagram of a power divider provided in an embodiment of the present application. DETAILED DESCRIPTION

[0052] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0053] References to "one embodiment" or "some embodiments" etc. described in this specification mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. appearing in different places in this specification do not necessarily all refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways.

[0054] The terms "include", "comprising", "having" and variations thereof all mean "including but not limited to", unless specifically emphasized otherwise.

[0055] In various embodiments of the present application, the first, second, etc. are only used to indicate that multiple objects are different. For example, the first output port and the second output port are only used to indicate different output ports. They should not have any impact on the output ports themselves and the number of output ports, and the first, second, etc. mentioned above should not impose any limitations on the embodiments of the present application.

[0056] Figure 1 1 is a schematic diagram of the architecture of a base station antenna system provided in an embodiment of the present application. The base station antenna system may include components such as an antenna 101, a feeder 103, a pole 104, a remote radio unit (RRU) 102, and a grounding device 105. The antenna 101 may be fixed to the pole 104 by adjusting a bracket, etc., and may be connected to the RRU 102 through the feeder 103, and signals may be transmitted between the feeder 103 and the RRU 102. The antenna 101 may also be connected to the grounding device 105.

[0057] In addition, the antenna 111 may also be provided together with the radio remote unit 112, for example, the antenna 111 and the radio remote unit 112 are part of an active antenna processing unit (AAU). In other words, the antenna 111 may be part of a radio unit (RU), which is not limited in the present application.

[0058] Figure 2 It is the main component of the antenna, which may include a radiation unit, a feeding network, a transmission mechanism, a calibration network, a radome, etc. The transmission mechanism may also be called a transmission structure, a transmission device, a transmission part, etc., which is not limited in this application.

[0059] The radiation unit is the basic structural unit of the antenna, which is used to radiate or receive radio waves. The radiation unit may also be called an antenna vibrator or vibrator, etc. An antenna may include one or more radiation units, and the frequencies of different radiation units may be the same or different.

[0060] The feeding network is used to feed the signal to the radiating unit according to the preset amplitude and phase, or to send the received signal to the signal processing unit of the base station according to the preset amplitude and phase. The feeding network can be connected to the transmission mechanism to achieve different radiation beam pointing directions. The feeding network can also be connected to the calibration network to obtain the calibration signal required by the system, so that the feeding network can feed the signal to the radiating unit or the signal processing unit of the base station according to the preset amplitude and phase. The feeding network can usually be composed of an impedance transmission line, which can be in the form of a stripline, a microstrip line, a coaxial line, etc. The feeding network can also include a phase shifter to adjust the radiation direction of the antenna signal. In some cases, the feeding network can also include devices such as a combiner and a filter.

[0061] The radome is a structural component used to protect the antenna system from the external environment, and the radome also has good electromagnetic wave penetration characteristics. The above-mentioned radiation unit, transmission mechanism, calibration network, and feeding network can be accommodated in the radome.

[0062] The antenna may also include a reflector, which may also be called a bottom plate, or an antenna panel, a metal reflective surface, etc., which can improve the receiving sensitivity of the antenna signal, reflect the antenna signal and focus it on the receiving point, and block or shield the interference of other radio waves from the opposite direction on the received signal. The reflector may also be arranged in the antenna cover, the radiation unit may be placed on one side of the reflector, and the transmission mechanism, the calibration network and the feeding network may be located on the other side of the reflector.

[0063] The standing wave in the antenna is formed by the superposition of two waves with the same frequency and opposite transmission directions, one of which is usually the reflection of the other. When the signal transmitted by the antenna is transmitted to the end of the antenna but not completely transmitted, it will be reflected back to form a standing wave, resulting in damage to the antenna signal and inability to effectively transmit to the target device, which in turn reduces the antenna radiation efficiency and affects the communication quality.

[0064] The present application provides a power splitter, a feed network and an antenna system to reduce the standing wave level in the power splitter, the feed network and the antenna system. The power splitter can be set in the feed network or can be a part of the feed network. Figures 3 to 15 The structure of the power divider provided in the embodiment of the present application is introduced in detail.

[0065] like Figure 3 As shown, the power divider may include a metal floor 200 and a metal strip line 300. The metal strip line 300 may be arranged on one side of the metal floor 200 in a direction perpendicular to the metal floor 200, for example, may be arranged on one side of the metal floor 200 in the z-axis direction shown in the figure. There may be a gap between the metal strip line 300 and the metal floor 200 to avoid direct electrical connection between the metal strip line 300 and the metal floor 200, which may cause a short circuit of the metal strip line 300. The metal strip line 300 may include an input port 301 and two output ports (a first output port 302 and a second output port 303). The input port 301, the first output port 302 and the second output port 303 may be located at three ends of the metal strip line 300, respectively. The metal strip line 300 may include a power division node A. The power division node A may be located at a position where the arm where the input port 301 of the metal strip line 300 is located, the arm where the first output port 302 is located, and the arm where the second output port 303 is located intersect. The signal on the metal strip line 300 can be input from the input port 301, and is split into two through the power division node A, and respectively transmitted to the first output port 302 and the second output port 303. According to the reciprocity principle, the input port and the output port can be interchanged, that is, the input port can be used as an output port, and the two output ports can be used as two input ports.

[0066] The portion of the metal strip line 300 between the power splitter node A and the first output port 302 may be a first output line, or may be understood as an arm where the first output port 302 is located. The first output line may include a first node B, and the metal strip line 300 on both sides of the first node B has different impedances. The two sides of the first node B may refer to the two sides of the first node B along the first output line. Figure 3In the power divider shown in the figure, the two sides of the first node B can be understood as the part from the first node B to the power dividing node A as one side, and the part from the first node B to the part away from the power dividing node A as the other side. The part of the metal strip line 300 located between the power dividing node A and the second output port 303 can be the second output line, and can also be understood as the arm where the second output port 303 is located. The second output line can include a second node C, and the impedance of the metal strip line 300 on both sides of the second node C can also be different. Similarly, the two sides of the second node C can refer to the two sides of the second node C along the second output line. Figure 3 The power divider shown can be understood as the part from the second node C to the power dividing node A as one side, and the part from the second node C to the part away from the power dividing node A as the other side. The first node B and the second node C can also be called discontinuous nodes.

[0067] In some implementations, the metal strip lines 300 on both sides of the first node B may have different line widths, so that the impedances of the metal strip lines 300 on both sides of the first node B are different, and the metal strip lines 300 on both sides of the second node C may also have different line widths. The metal strip lines 300 on both sides of the first node B may have different line widths, which may be the dimensions of the metal strip lines 300 on both sides of the first node B in a direction perpendicular to the signal transmission direction, that is, the dimensions of the metal strip lines 300 in the x-axis direction shown in the figure, and the metal strip lines 300 on both sides of the second node C may have similar line widths.

[0068] It should be noted that, in order to facilitate the description of the structure of the power divider, the positions of the power division node A, the first node B and the second node C are schematically marked in the form of "points" in the figure. The power division node A, the first node B and the second node C may not actually be points, but regions. For example, the power division node A may be the region where the signal is shunted on the metal strip line 300, the first node B may be the entire boundary region where the line width of the metal strip line 300 on the first output line changes, and the second node C may also be the entire boundary region where the line width changes on the second output line. In actual products, the overall line width of the metal strip line 300 is relatively small, and the region where the line width changes can be approximately regarded as a node.

[0069] Figure 3 In the power divider shown, the projection of the second output port 303 along the direction perpendicular to the metal floor 200 is located outside the area where the metal floor 200 is located, and the projection of the first output port 302 along the direction perpendicular to the metal floor 200 is located within the area where the metal floor 200 is located. The projections of the first output port 302 and the second output port 303 along the direction perpendicular to the metal floor 200 may also be both located outside the area where the metal floor 200 is located, or may be both located within the area where the metal floor 200 is located. The various output ports of the power divider described below are similar to this, and the present application does not limit this.

[0070] In some embodiments, the difference between the length of the metal strip line 300 between the power division node A and the first node B and the length of the metal strip line 300 between the power division node A and the second node C may be an integer multiple of one quarter of the working wavelength of the antenna system. Figure 3 The metal strip line 300 shown, the first output line and the second output line are generally straight, and the length of the metal strip line 300 between the power division node A and the first node B can be the dimension of the metal strip line 300 between the power division node A and the first node B along the y-axis direction shown in the figure. Similarly, the length of the metal strip line 300 between the power division node A and the second node C can be the dimension of the metal strip line 300 between the power division node A and the second node C along the y-axis direction shown in the figure.

[0071] In the embodiment provided by the present application, the difference between the length of the metal strip line 300 between the power node A and the first node B and the length of the metal strip line 300 between the power node A and the second node C is an integer multiple of one quarter of the working wavelength, which can make the reflected standing waves on the metal strip line 300 cancel each other, improve the standing wave tolerance level of the feeding network and the antenna system, and thus improve the antenna performance. Exemplarily, for an antenna with an operating frequency of 2 gigahertz (GHz), the wavelength of the electromagnetic wave propagating on the metal strip line 300 is 150 millimeters (mm), when the difference between the length of the metal strip line 300 between the power node A and the first node B and the length of the metal strip line 300 between the power node A and the second node C is one quarter of the working wavelength, the phase difference between the electromagnetic wave transmitted from the power node A to the first node B on the metal strip line 300 and the electromagnetic wave propagated from the power node A to the second node C is 90°, and then, the phase difference of the reflected electromagnetic wave is 180°, so that the reflected electromagnetic waves cancel each other, that is, the reflected standing waves cancel each other.

[0072] It should be noted that the difference between the length of the metal strip line 300 between the power division node A and the first node B and the length of the metal strip line 300 between the power division node A and the second node C in the embodiment of the present application is an integer multiple of one quarter of the working wavelength, which may refer to that the length difference of the metal strip line 300 is approximately an integer multiple of one quarter of the working wavelength, rather than an absolute numerical requirement. The length difference of the metal strip line 300 is allowed to have a certain range of deviations around one quarter, for example, the length difference of the metal strip line 300 may also be an integer multiple of one quarter of the working wavelength. Moreover, the length difference of the metal strip line 300 is an integer multiple of one quarter of the working wavelength, and the integer may refer to a non-zero integer, for example, it may be 1 times, 2 times, 3 times, 4 times, etc. of a quarter of the working wavelength.

[0073] When the first output line and the second output line of the power divider include a first node and a second node respectively, and the first node and the second node are formed by different line widths of the metal strip line, the power divider may further include a first medium, and the first medium may be arranged between the metal floor 200 and the metal strip line 300 ( Figure 3 (not shown in the figure). When the power divider includes a first medium, the first medium can cover the entire metal floor 200, and the first medium can also cover a partial area of ​​the metal floor 200, or in other words, the metal strip line 300 can be set on the first medium as a whole, or a partial area of ​​the metal strip line 300 can be set on the first medium. The first medium can be a non-metallic material to prevent the metal strip line 300 from short-circuiting. The position of the first medium can be fixed and used to support the metal strip line. When the first medium is used to play a supporting role, the first medium can also be called a supporting medium. The first medium can also move relative to the metal strip line to achieve phase adjustment. When the first medium is used to adjust the phase, the first medium can also be called a phase-shifting medium.

[0074] Figure 4 This is a schematic diagram of the overall structure of another power divider provided in an embodiment of the present application. The power divider may include a metal cavity 210. The metal cavity 210 may enclose a receiving space. Figure 3 The metal strip line 300 described in the figure can be arranged in the accommodation space surrounded by the metal cavity 210. Exemplarily, the metal cavity 210 can include a floor layer 211 and a side wall 212. The side wall 212 can be arranged around the periphery of the floor layer 211 to form a rectangular parallelepiped structure. The number of floor layers 211 can be two, which are respectively arranged on both sides of the metal strip line 300 along the z-axis direction shown in the figure, and are arranged in a stacked structure with the metal strip line 300. The above-mentioned metal floor 200 is also the floor layer 211 of the metal cavity 210. Exemplarily, the floor layer 211 can be parallel to the main plane of the metal strip line 300, and the main plane of the metal strip line 300 can be the xy plane shown in the figure.

[0075] In other words, the power divider may include one layer of metal floor 200 or two layers of metal floor 200. When the power divider includes two layers of metal floor 200, the two layers of metal floor 200 may be arranged on the upper and lower sides of the metal strip line 300 in a direction perpendicular to the main plane of the metal strip line 300, that is, on the upper and lower sides in the z-axis direction.

[0076] When the power divider includes a single-layer metal floor 200, the power divider can be applied to a printed circuit board (PCB), for example; when the power divider includes a double-layer metal floor 200, the power divider can be applied to a stripline structure, so that the power divider can be applied to different application scenarios according to actual usage requirements.

[0077] Figure 3 and Figure 4 In the power divider shown in FIG. 1 , the line width of the metal strip line 300 between the first node B and the second node C is greater than the line width of the metal strip line 300 between the first node B and the first output port 302, and is also greater than the line width of the metal strip line 300 between the second node C and the second output port 303. Alternatively, the line width of the metal strip line 300 between the first node B and the second node C may also be less than the line width of the metal strip line 300 between the first node B and the first output port 302, and may also be greater than the line width of the metal strip line 300 between the second node C and the second output port 303, see FIG. Figure 5 The power divider structure shown in FIG. Other structural features of the power divider can be Figure 3 The power divider shown is similar and will not be described again here.

[0078] and Figure 3 and Figure 4 Similar to the structure shown, Figure 5 The metal strip line 300 of the structure shown can also be arranged in the metal cavity 210, see Figure 6 The structure shown will not be described in detail here.

[0079] In the specific implementation Figures 3 to 6 In the power divider shown, the line width of the metal strip line 300 between the power division node A and the first node B can be the same as the line width of the metal strip line 300 between the power division node A and the second node C, and the line width of the metal strip line 300 between the first node B and the first output port 302 can be the same as the line width of the metal strip line 300 between the second node C and the second output port 303, so as to reduce the processing complexity of the power divider. The line width of the metal strip line 300 between the power division node A and the first node B can also be different from the line width of the metal strip line 300 between the power division node A and the second node C, and the line width of the metal strip line 300 between the first node B and the first output port 302 can also be different from the line width of the metal strip line 300 between the second node C and the second output port 303. It is only necessary to ensure that there are areas with different line widths on the first output line and the second output line to form discontinuous nodes. In addition, Figures 3 to 6In the power divider shown, the length of the metal strip line 300 between the power dividing node A and the first node B is less than the length of the metal strip line 300 between the power dividing node A and the second node C, or the length of the metal strip line 300 between the power dividing node A and the first node B may also be greater than the length of the metal strip line 300 between the power dividing node A and the second node C, and it is only necessary to ensure that the difference between the length of the metal strip line 300 between the power dividing node A and the first node B and the length of the metal strip line 300 between the power dividing node A and the second node C is an integer multiple of a quarter wavelength.

[0080] The first node B and the second node C are formed by different line widths of the metal strip line 300. The first node B and the second node C may also be formed by a discontinuous interface formed between the metal strip line 300 and the first medium, see Figure 7 The structure shown.

[0081] The power divider may include a first medium 400, which may be disposed between a metal floor 200 and a metal strip line 300. Along the structure of the metal strip line 300, that is, along the signal transmission direction on the metal strip line 300, partial areas of two output lines of the metal strip line 300 may be disposed on the first medium 400, and partial areas may not be disposed on the first medium 400.

[0082] Exemplarily, the first medium 400 may be in a strip shape, the first output line (the arm where the first output port is located) may be in a zigzag shape, part of the first output line may be carried on the first medium 400, and part of the first output line may not be carried on the first medium 400, and the first node B may be the intersection of the area where the first output line contacts the first medium 400 and the area where it does not contact the first medium 400. Since one section of the metal strip line 300 on both sides of the first node B is carried on the first medium 400 and the other section is not carried on the first medium 400, the impedance of the metal strip line 300 on both sides of the first node B may be different.

[0083] Similar to the structure of the first output line, the second output line may also be in a zigzag shape, and the metal strip lines 300 on both sides of the second node C may be supported on the first medium 400 on one side and not supported on the first medium 400 on the other side, so that the impedance of the second output line on both sides of the second node C may also be different.

[0084] The difference between the length of the metal strip line 300 between the power division node A and the first node B and the length of the metal strip line 300 between the power division node A and the second node C may be an integer multiple of one quarter of the working wavelength. Figure 7The metal strip line 300 shown, the first output line includes a bending point D, the power division node A to the bending point D can be a straight line segment, the bending point D to the first node B can also be a straight line segment, the length of the metal strip line 300 between the power division node A and the first node B can be the sum of the length of the metal strip line 300 between the power division node A and the bending point D and the length of the metal strip line 300 between the bending point D and the first node B. Similarly, the length of the metal strip line 300 between the power division node A and the second node C can be the sum of the length of the metal strip line 300 between the power division node A and the bending point E and the length of the metal strip line 300 between the bending point E and the second node C.

[0085] In this example, the first medium 400 can move relative to the metal strip line 300 and the metal floor 200 along the direction of the line between the first node B and the second node C, that is, the first medium 400 can move along the direction of the y-axis shown in the figure. When the first medium 400 moves along the direction of the line between the first node B and the second node C, the position of the first medium 400 relative to the position of the metal floor 200 and the metal strip line 300 can change, thereby changing the electromagnetic field distribution around the metal strip line 300, and realizing the phase adjustment function of the power divider. When the first medium 400 moves relative to the metal strip line 300, the metal strip line 300 on one side of the first node B can still be carried on the first medium 400, and the metal strip line 300 on the other side of the first node B can still not contact the first medium 400. Similarly, the metal strip line 300 on one side of the second node C can still be carried on the first medium 400, and the metal strip line 300 on the other side of the second node C can still not contact the first medium 400, and the positions of the first node B and the second node C can not change.

[0086] The metal strip line 300 may not be a straight structure as shown in the figure. For example, it may include both a straight segment area and an arc segment area. The length between the power distribution node A and the first node B can be the sum of the corresponding arc segment circumference and the straight segment length. The length of the metal strip line 300 between the power distribution node A and the second node C is similar to it, which will not be repeated here.

[0087] Figure 8 for Figure 7 The metal strip line 300 and the first dielectric 400 are arranged in the metal cavity 210. Figure 4 and Figure 6Similar to the structure described above, when the power divider includes a metal cavity 210, the power divider may include a double-layer metal floor, that is, two floor layers 211, which are respectively arranged on the upper and lower sides of the metal strip line 300. Correspondingly, the power divider may also include a double-layer first medium 400, which is respectively arranged between the metal strip line 300 and the upper floor layer 211, and between the metal strip line 300 and the lower floor layer 211. The projections of the two layers of the first medium 400 in the direction perpendicular to the main plane of the first medium 400 may overlap with each other, that is, discontinuous nodes may be formed between the metal strip line 300 and the two layers of the first medium 400, and the positions of the discontinuous nodes formed with the two layers of the first medium 400 may correspond to each other, and together form the above-mentioned first node B and second node C.

[0088] Figure 7 and Figure 8 The output line of the metal strip line 300 shown in FIG. 1 is formed into a recessed structure. Fig. 9 The output line of the metal strip line 300 is formed into a protruding structure. Figure 7 and Figure 8 The structure of the metal strip line 300 shown is similar. Fig. 9 The projection of the metal strip line 300 in the plane where the first medium 400 is located along the direction perpendicular to the main plane of the first medium 400 is at least partially located outside the area where the first medium 400 is located, and the first node B can be the intersection between the area where the first output line contacts the first medium 400 and the area where it does not contact the first medium 400, the second node C can be the intersection between the area where the second output line contacts the first medium 400 and the area where it does not contact the first medium 400, and the difference between the length of the metal strip line 300 between the power division node A and the first node C and the length of the metal strip line 300 between the power division node A and the second node C can be an integer multiple of one quarter of the working wavelength.

[0089] Figures 7 to 9 In the described power divider, the first medium 400 is a strip structure, and the output line of the metal strip line 300 is a zigzag structure. There are areas in contact with the first medium 400 and areas not in contact with the first medium 400 on the zigzag output line, and an intersection is formed between the two areas. Fig.10 In another power divider of an embodiment of the present application, the first medium 400 is a plate-like structure, and the output line of the metal strip line 300 is a linear structure, or in other words, the metal strip line 300 can be a T-shaped structure. There are areas in contact with the first medium 400 and areas not in contact with the first medium 400 on the linear output line, and an intersection is formed between the two areas.

[0090] and Figure 7 and Figure 8 Similarly, Fig. 9In the power divider shown, the first medium 400 can also move relative to the metal strip line 300 along the y-axis direction shown in the figure to perform phase adjustment, and when the first medium 400 moves relative to the metal strip line 300, the metal strip line 300 on one side of the first node B can still be carried on the first medium 400, and the metal strip line 300 on the other side of the first node B can still not be in contact with the first medium 400. Similarly, the metal strip line 300 on one side of the second node C can still be carried on the first medium 400, and the metal strip line 300 on the other side of the second node C can still not be in contact with the first medium 400, and the positions of the first node B and the second node C can remain unchanged.

[0091] like Fig.10 As shown, the first medium 400 may be a plate-like structure, and the input line of the metal strip line 300 may be arranged on the first medium 400, and the input line is the part of the metal strip line 300 from the input port to the power splitting node A. For the first output line, the part between the power splitting node A and the first node B may be arranged on the first medium 400 and in contact with the first medium 400, while the part between the first node B and the first output port 302 may not be arranged on the first medium 400. For the second output line, the part between the power splitting node A and the second node C may be arranged on the first medium 400 and in contact with the first medium 400, while the part between the second node C and the second output port 303 may not be arranged on the first medium 400. Similar to the above-mentioned power divider, the difference between the length of the metal strip line 300 between the power splitting node A and the first node B and the length of the metal strip line 300 between the power splitting node A and the second node C is an integer multiple of one quarter of the working wavelength.

[0092] for Fig.10 In the power divider shown in FIG. 1 , the number of the first medium 400 may also be two, which are respectively arranged at Fig.10 The two side areas on the metal floor, that is Fig.10 The area on the metal floor where the first dielectric 400 is not provided, Fig.10 The first medium 400 may not be set in the area where the first medium 400 is set, so that the metal strip line 300 between the first node B and the first output port 302 can be carried on the first medium 400 and in contact with the first medium 400, and the metal strip line 300 between the second node C and the second output port 303 can also be carried on the first medium 400 and in contact with the first medium 400, while the metal strip line 300 between the first node B and the second node C is not set on the first medium 400 and is not in contact with the first medium 400.

[0093] Figures 3 to 10In the described power divider, the first medium 400 has a uniform structure, or in other words, the thickness at each position on the first medium 400 is the same. The first medium 400 may also have a non-uniform structure.

[0094] As an example, see Fig.11 In the structure shown, the first medium 400 may include a first region 401 and a second region 402. The thickness of the first region 401 may be greater than the thickness of the second region 402, that is, the size of the first region 401 in a direction perpendicular to the metal floor 200 is greater than the size of the second region 402 in a direction perpendicular to the metal floor 200. At least part of the first output line and the second output line may be carried on the first region 401. In the first output line, the metal strip line located on one side of the first node B may be carried on the first region 401, and the metal strip line 300 located on the other side of the first node B may have a gap with the second region 402. For example, the metal strip line 300 between the power division node A and the first node B may be carried on the first region 401, and the metal strip line 300 between the first node B and the first output port 302 may be located above the second region 402 along the z-axis direction shown in the figure, and may have a gap with the second region 402. Similarly, in the second output line, the metal strip line 300 located on one side of the second node C is carried on the first area 401, and the metal strip line 300 located on the other side of the second node C may have a gap between it and the second area 402. For example, the metal strip line 300 between the power division node A and the second node C may be carried on the first area 401, and the metal strip line 300 between the second node C and the second output port 303 may be located above the second area 402 along the z-axis direction shown in the figure, and may have a gap between it and the second area 402.

[0095] As another example, see Fig.12In the structure shown, the first medium 400 may include a first slot 403, and the first slot 403 may penetrate the first medium 400 in a direction perpendicular to the first medium 400, that is, penetrate the first medium 400 in the z-axis direction, or may not penetrate the first medium 400. The metal strip line 300 may be in a "T"-shaped structure, and at least part of the first output line may be arranged above the first slot 403, that is, the metal strip line 300 on one side of the first node B may be carried on the first medium 400, and the other side may be located above the first slot 403, that is, not in contact with the first medium 400. Similarly, the metal strip line 300 on one side of the second node C may be carried on the first medium 400, and the metal strip line 300 on the other side is located on the first slot 403. The metal strip line 300 shown in the figure is in contact with the short side of the first slot body 403, and the projection of the first node B and the second node C along the direction perpendicular to the metal floor 200 is located on the short side of the first slot body 403. The metal strip line 300 may also be in contact with the long side of the first slot body 403, and the projection of the first node B and the second node C along the direction perpendicular to the metal floor 200 may be located on the long side of the first slot body 403, and the difference between the length of the metal strip line between the power division node A and the first node B and the length of the metal strip line between the power division node A and the second node C may be an integer multiple of one quarter of the working wavelength. For example, in the case where the metal strip line 300 is Figure 7 or Fig. 9 In the zigzag structure shown, the two output lines of the metal strip line 300 may include a bent portion, and the bent portion may be in contact with the long side of the first slot body 403 .

[0096] Fig.12 The width of the first output line and the second output line shown is smaller than the width of the first slot body 403. The width of the first output line and the second output line may also be larger than the width of the first slot body 403, which is not limited in the present application. Fig.12 In the power divider shown in the figure, the width of the first output circuit, the second output circuit and the first slot body 403 is the size of the first output circuit, the second output circuit and the first slot body 403 along the x-axis direction shown in the figure. The cross-sectional shape of the first slot body 403 along the xy plane can be a rectangle as shown in the figure, or a square, a circle, an ellipse or an irregular shape, etc., which is not limited in the present application.

[0097] In some embodiments, the power divider may further include a second medium 500, which may be connected to the metal floor 200 and used to support the metal strip line 300. The second medium 500 may also be a non-metallic material, and the material of the second medium 500 may be the same as or different from the material of the first medium 400. For example, see Fig.13The structure shown (for convenience of showing the structure of the second medium 500, Fig.13 The metal floor 200 is omitted in the figure. The metal floor 200 can be arranged below the second medium 500, or above the first medium 400, or both below the second medium 500 and above the first medium 400. The metal strip line 300 can be an irregular structure. The second medium 500 can include a first part 501 and a second part 502. The first part 501 can be a plate-like structure, and the main plane of the first part 501 can be the xy plane shown in the figure. The main plane of the first part 501 is the plane with a larger plane area of ​​the first part 501. The first part 501 can be arranged below the metal strip line 300. The second part 502 can be fixedly connected to the first part 501, and can extend in a direction perpendicular to the main plane of the first part 501. The second part 502 can be arranged below the metal strip line 300 (such as the 502B part shown in the figure), or can extend from the bottom of the metal strip line 300 to the top of the metal strip line 300 (such as the 502A part shown in the figure). In the example where the portion 502A extends from below the metal strip line 300 to above the metal strip line 300, the metal strip line 300 may include one or more through holes 305, and the portion 502A may extend from below the metal strip line 300 to above the metal strip line 300 through the through holes 305. The portion 502A may also be located at the edge of the second medium 500, extending from outside the area where the metal strip line 300 is located to above the metal strip line 300.

[0098] Similar to the second medium 500, the metal floor 200 may also include an extension portion (not shown in the figure), and the metal floor 200 may be fixedly connected to the second medium 500 through its extension portion. For example, when the metal floor 200 is located below the second medium 500, the metal strip line 300 may be fixedly connected to the second medium 500 through its extension portion. Fig.13 As shown, the metal strip line 300 is disposed above the second medium 500, that is, it can be disposed on the side of the second medium 500 away from the metal floor 200, or the metal strip line 300 can also be disposed on the side of the second medium 500 close to the metal floor 200, that is, it is located below the second medium 500 and between the second medium 500 and the metal floor 200. When the metal strip line 300 is disposed on the side of the second medium 500 close to the metal floor 200, there can be a gap between the metal strip line 300 and the metal floor 200.

[0099] The first medium 400 may be disposed above the metal strip line 300, the metal strip line 300 on one side of the first node B may contact the first medium 400, and the metal strip line 300 on the other side may not contact the first medium 400, the metal strip line 300 on one side of the second node C may contact the first medium 400, and the metal strip line 300 on the other side may not contact the first medium 400, and the metal strip line 300 between the power division node A and the first node B and the second node C meets the aforementioned length difference requirement. The first medium 400 may also be disposed below the metal strip line 300, that is, it may be disposed between the metal strip line 300 and the second medium 500.

[0100] Figures 3 to 13 The power splitters described above all include two output ports, but the power splitters may also include three or more output ports. Fig.14 In the structure described, the power divider may further include a third output port 304, and the portion of the metal strip line 300 from the power division node to the third output port 304 may be referred to as a third output line. Similarly, according to the reciprocity principle, the three output ports may be used as three input ports, and the input port may be used as an output port. When the power divider includes three output lines, any two of the output lines may include discontinuous nodes and meet the above-mentioned metal strip line length difference requirement. For example, the first output line and the second output line may include a first node B and a second node C respectively, and the difference between the length of the metal strip line 300 between the power division node A and the first node B and the length of the metal strip line 300 between the power division node A and the second node C is an integer multiple of one-quarter of the working wavelength. The impedance of each point on the third output line may be the same, that is, the third output line may not be in contact with the first medium.

[0101] Alternatively, the first output line and the third output line may include a first node B and a third node respectively, and the difference between the length of the metal strip line 300 between the power division node A and the first node B and the length of the metal strip line 300 between the power division node A and the third node is an integer multiple of a quarter of the working wavelength, or the second output line and the third output line may include a second node C and a third node respectively, and the difference between the length of the metal strip line 300 between the power division node A and the second node C and the length of the metal strip line 300 between the power division node and the third node is an integer multiple of a quarter of the working wavelength ( Fig.14 The third node is not shown).

[0102] Fig.14 The power divider shown may also include a second medium 500, Fig.14 The second medium 500 is exemplarily disposed between the metal strip line 300 and the first medium 400. The structure of the second medium 500 may also be the same as that of the above-mentioned Fig.13The structure of the second medium 500 is similar and will not be described again here.

[0103] In some embodiments, the three output lines may also include discontinuous nodes, such as Fig.15 As shown, the third output line may include a third node H, and the difference between the length of the metal strip line between the power division node A and the third node H and the length of the metal strip line between the power division node A and the first node B may be an integer multiple of one-quarter of the operating wavelength, or the difference between the length of the metal strip line between the power division node A and the third node H and the length of the metal strip line between the power division node A and the second node C may be an integer multiple of one-quarter of the operating wavelength.

[0104] For example, Fig.15 In the power divider shown, the length of the metal strip line 300 between the power dividing node A and the third node H is greater than the length of the metal strip line 300 between the power dividing node A and the second node C, and the difference between the length of the metal strip line 300 between the power dividing node A and the third node H and the length of the metal strip line 300 between the power dividing node A and the second node C may be an integer multiple of a quarter of the working wavelength. The difference between the length of the metal strip line 300 between the power dividing node A and the second node C and the length of the metal strip line 300 between the power dividing node A and the first node B may be an integer multiple of a quarter of the working wavelength, or may not be an integer multiple of a quarter of the working wavelength.

[0105] For another example, the difference between the length of the metal stripline between the power division node A and the first node B and the length of the metal stripline between the power division node A and the second node C may be an integer multiple of a quarter of the working wavelength. The length of the metal stripline 300 between the power division node A and the third node H may be the same as the length of the metal stripline 300 between the power division node A and the first node B (not shown in the figure), so that the difference between the length of the metal stripline between the power division node A and the third node H and the length of the metal stripline between the power division node A and the second node C is an integer multiple of a quarter of the working wavelength. Similarly, the length of the metal stripline 300 between the power division node A and the third node may also be the same as the length of the metal stripline 300 between the power division node A and the second node C, and the difference between the length of the metal stripline between the power division node A and the third node H and the length of the metal stripline between the power division node A and the first node B is an integer multiple of a quarter of the working wavelength.

[0106] Fig.14 and Fig.15The power divider including three output ports is used as an example to illustrate the setting of discontinuous nodes on each output line when there are multiple output ports. Similarly, when the power divider includes more than three output ports, any two output lines can include discontinuous nodes, and the nodes can meet the above-mentioned metal strip line length difference requirement, or each output line can include discontinuous nodes, and the discontinuous nodes on each output line can meet the metal strip line length difference requirement of one-quarter of the working wavelength in pairs to achieve standing wave cancellation.

[0107] Fig.14 and Fig.15 Taking the change in the distribution of the first medium 400 on the output line of the metal strip line 300 as an example, the discontinuous node setting method when the power divider includes three output ports is introduced. Similarly, when the metal strip line 300 includes three or more output ports, discontinuous nodes can also be formed on the output line by setting different line widths on the output line, and the metal strip line length difference relationship satisfied by the line width discontinuous change nodes on each output line can be similar to the discontinuous nodes formed by the above-mentioned metal strip line 300 and the first medium. To avoid repetition, it will not be repeated here.

[0108] Above Figures 3 to 13 The power divider described may be a one-to-two power divider, Fig.14 and Fig.15 The power divider described is a one-to-three structure power divider. Fig.16 The power divider described is a one-to-four power divider. The one-to-four power divider may include a first power divider portion and a second power divider portion, for example, Figures 3 to 13The wiring is continued on the basis of the one-to-two power divider structure shown, and a one-to-two power divider is connected to the first output port and the second output port respectively. The first output port can be connected to the first power division part, and the first output port can be used as the input port of the first power division part. The signal of the power divider can flow into the first power division part through the first output port, and be divided into two at the power division node F of the first power division part, and transmitted to the output ports 304 and 305 of the first power division part. The second output port can be connected to the second power division part, and the second output port can be used as the input port of the second power division part. After the signal of the power divider flows into the second power division part through the second output port, it is divided into two at the power division node G of the second power division part, and transmitted to the output ports 306 and 307 of the second power division part. The impedance of any position on the first power division part can be the same. For example, the entire first power division part may not be set on the first medium, or the entire first power division part may also be set on the first medium. The entire first power division part may refer to the part of the first power division part from the first output port 302 to the port 304 and 305. Similarly, the impedance at any position on the second power division part may be the same. For example, the entire second power division part may not be set on the first medium, or the entire second power division part may also be set on the first medium. It is only necessary that the first output line and the second output line part of the power divider have nodes with discontinuous impedance changes, and the metal strip lines between the nodes meet the aforementioned difference requirements. The first power division part may also be provided with nodes with discontinuous impedance changes. For example, the first power division part may be partially carried on the first medium, or there may be regions with different line widths on the first power division part, and the discontinuous nodes on the first power division part may be provided on the arm where the port 304 is located, or may be provided on the arm where the port 305 is located, or may be provided on both the arms where the ports 304 and 305 are located. Similarly, the second power division part may also be provided with nodes with discontinuous impedance changes, and this application does not limit this.

[0109] The first medium 400 of the power divider may further include a second slot body 404, which may be disposed at an end of the first medium 400, and at least a portion of the output line may be disposed on the second slot body 404. For example, when the power divider includes two output lines, the number of the second slot bodies 404 may be two, which are disposed at both ends of the first medium 400, respectively, and the second slot body 404 may be disposed to achieve impedance matching between the first output line and the second output line.

[0110] It should be noted that Fig.16The power divider shown may also include only the first power division part, or only the second power division part. The first power division part and the second power division part may also be a one-to-three or one-to-many power divider. It is only necessary that on the entire power divider, there are discontinuous nodes on the two output lines corresponding to the power division part into which the signal initially flows, and the length of the metal strip line between the nodes meets the above-mentioned difference requirement. When the power divider includes the first power division part and / or the second power division part, the above-mentioned discontinuous nodes may also be formed by the discontinuous line width on the metal strip line 300.

[0111] Above Figures 3 to 16 In the described embodiment, each output line includes only one discontinuous node, and each output line may also include multiple discontinuous nodes. It is only necessary that the length of the metal strip line between the discontinuous node and the power splitting node on the two output lines respectively meets the above-mentioned length difference requirement. In addition, the discontinuous nodes on each output line of the above-mentioned power splitter are formed by the discontinuous change of the line width of the metal strip line, or are formed by the discontinuous distribution of the first medium in the signal transmission direction of the metal strip line. The discontinuous nodes on the output line may also include the above two forms at the same time (not shown in the figure). For example, in the first output line, the metal strip lines 300 on both sides of the first node B have different line widths. In the second output line, the metal strip line 300 on one side of the second node C is carried on the first medium 400, while the metal strip line 300 on the other side does not contact the first medium 400. For another example, in the first output line, the metal strip lines 300 on both sides of the first node B have different line widths, and the metal strip line 300 on one side of the first node B is carried on the first medium 400, while the metal strip line 300 on the other side does not contact the first medium 400. The second output line can be similar thereto, that is, the discontinuous node formed by the portion of the metal strip line 300 in contact with the first medium 400 and the portion not in contact with the first medium 400 can be the same node as the discontinuous node formed by the different line widths of the metal strip line 300. The discontinuous node formed by the portion of the metal strip line 300 in contact with the first medium 400 and the portion not in contact with the first medium 400 can also not be the same node as the discontinuous node formed by the different line widths of the metal strip line 300. It is only necessary to ensure that one of the discontinuous nodes on the first output line and one of the discontinuous nodes on the second output line satisfy the aforementioned distance difference relationship.

[0112] The metal strip in the embodiment of the present application may be a PCB structure or a sheet metal strip fixed by a plastic medium, which is not limited in the present application. The power divider may be an independent power divider or a part of a feed network.

[0113] An embodiment of the present application further provides a feeding network, which includes any one of the power dividers described in the above embodiments.

[0114] An embodiment of the present application further provides an antenna system, which includes the feed network and one or more antenna elements. The multiple antenna elements may also be arranged into an antenna array.

[0115] An embodiment of the present application also provides a base station, which may include the above-mentioned antenna system and one or more radio frequency modules, and the antenna system may be connected to the radio frequency module.

[0116] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A power divider, used in an antenna system, characterized in that: include: Metal flooring; A metal strip line, the metal strip line is arranged on one side of the metal floor along a direction perpendicular to the metal floor, the metal strip line comprises a power division node, an input port, a first output port, and a second output port, the power division node is used to transmit a signal input from the input port to the first output port and the second output port respectively; The metal strip line between the power splitting node and the first output port is a first output line, the first output line includes a first node, and the metal strip lines on both sides of the first node have different impedances; the metal strip line between the power splitting node and the second output port is a second output line, the second output line includes a second node, and the metal strip lines on both sides of the second node have different impedances, and the difference between the length of the metal strip line between the power splitting node and the first node and the length of the metal strip line between the power splitting node and the second node is an integer multiple of one-quarter of the working wavelength of the antenna system.

2. The power divider according to claim 1, characterized in that: The metal strip lines on two sides of the first node have different line widths, and / or the metal strip lines on two sides of the second node have different line widths.

3. The power divider according to claim 2, characterized in that: The metal strip line width between the first node and the second node is greater than the metal strip line width between the first node and the first output port and greater than the metal strip line width between the second node and the second output port; or, The width of the metal strip line between the first node and the second node is smaller than the width of the metal strip line between the first node and the first output port and smaller than the width of the metal strip line between the second node and the second output port.

4. The power divider according to any one of claims 1 to 3, characterized in that: The power divider further includes a first medium, at least a portion of which is disposed between the metal strip line and the metal floor, and at least a portion of the metal strip line is supported on the first medium.

5. The power divider according to claim 4, characterized in that: In the first output line, the metal strip line located on one side of the first node is carried on the first medium, and the metal strip line located on the other side of the first node is not carried on the first medium, and / or, In the second output line, the metal strip line located on one side of the second node is carried on the first medium, and the metal strip line located on the other side of the second node is not carried on the first medium.

6. The power divider according to claim 4 or 5, characterized in that: The first medium is in a strip shape, and the first medium can move along a line connecting the first node and the second node.

7. The power divider according to claim 4 or 5, characterized in that: The first medium includes a first tank body, In the first output line, the metal strip line located on one side of the first node is carried on the first medium, and the metal strip line located on the other side of the first node is arranged on the first slot body, and / or, In the second output line, the metal strip line located on one side of the second node is carried on the first medium, and the metal strip line located on the other side of the second node is located on the first slot.

8. The power divider according to claim 4 or 5, characterized in that: The first medium includes a first area and a second area, wherein a size of the first area in a direction perpendicular to the metal floor is larger than a size of the second area in a direction perpendicular to the metal floor; In the first output line, the metal strip line located on one side of the first node is carried on the first region, and there is a gap between the metal strip line located on the other side of the first node and the second region, and / or, In the second output line, the metal strip line located on one side of the second node is carried on the first region, and there is a gap between the metal strip line located on the other side of the second node and the second region.

9. The power divider according to any one of claims 4 to 8, characterized in that: The power divider includes a metal cavity, the metal cavity encloses a containing space, the metal strip line and the first medium are arranged in the containing space, and the metal floor is a portion of the metal cavity that is stacked with the metal strip line.

10. The power divider according to any one of claims 4 to 9, characterized in that: The number of the first mediums is at least two, and the at least two first mediums are respectively arranged on both sides of the metal strip line along a direction perpendicular to the metal strip line.

11. The power divider according to any one of claims 1 to 10, characterized in that: The power divider further includes a third output port, the metal strip line between the power division node and the third output port is a third output line, and the impedance of each point on the third output line is the same.

12. The power divider according to any one of claims 4 to 10, characterized in that: The power divider further includes a third output port, the metal strip line between the power division node and the third output port is a third output line, the third output line includes a third node, the metal strip lines on both sides of the third node have different impedances, and the difference between the length of the metal strip line between the power division node and the third node and the length of the metal strip line between the power division node and the first node is an integer multiple of one quarter of the working wavelength of the antenna system, or, The difference between the length of the metal strip line between the power division node and the third node and the length of the metal strip line between the power division node and the second node is an integer multiple of one quarter of the working wavelength of the antenna system.

13. The power divider according to claim 12, characterized in that: In the third output line, the metal strip line located on one side of the third node is carried on the first medium, and the metal strip line located on the other side of the third node is not carried on the first medium.

14. The power divider according to claim 12 or 13, characterized in that: The metal strip lines on both sides of the third node have different line widths.

15. The power divider according to any one of claims 1 to 14, characterized in that: The power divider also includes a first power division part and / or a second power division part, the first power division part is connected to the first output port, and the first output port is the input port of the first power division part, the second power division part is connected to the second output port, and the second output port is the input port of the second power division part.

16. The power divider according to claim 15, characterized in that: The impedance of any position on the first power division part is the same, and / or the impedance of any position on the second power division part is the same.

17. The power divider according to any one of claims 1 to 16, characterized in that: The metal strip is a printed circuit board structure, or the metal strip is a sheet metal strip fixed by a plastic medium.

18. A feeding network, characterized in that: Comprising the power divider as claimed in any one of claims 1 to 17.

19. An antenna system, characterized in that: The invention comprises a feeding network as claimed in claim 18, and one or more antenna elements, wherein the feeding network is connected to the antenna elements.

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