Power divider, feed network, and antenna system

Abstract

The present application 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; the metal strip line comprises a power division 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, and the metal strip line between the power division node and the second output port is a second output line; the two output circuits respectively comprise a first node and a second node; the impedances of the metal strip line on two sides of the first node and the impedances of the metal strip line on two sides of the second node are different; 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 the quarter working wavelength of an antenna system. According to the power divider, the feed network, and the antenna system provided by embodiments of the present application, the reflected standing waves of the power divider, the feed network, and the antenna system can be reduced.

Description

Power splitters, feed networks and antenna systems

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on October 31, 2023, with application number 202311444272.6 and invention name “Power splitter, feeding network and antenna system”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of wireless technology, and in particular to a power splitter, a feeding network and an antenna system. Background Art

[0003] 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 element. The standing wave and tolerance level of the feed network affect the standing wave level of the antenna, which is an important factor affecting the stability and reliability of the antenna performance.

[0004] Power splitters are a crucial component of the feed network. Existing power splitters primarily include T-junction and Wilkinson splitters. The machining precision of T-junction splitters can easily lead to variations in standing waves, which can cause fluctuations in the feed network and antenna standing waves. Wilkinson splitters use resistors to connect the two output lines. Resistors absorb reflected standing waves, but when the input power of a Wilkinson splitter is high, the resistors can easily burn out, affecting the absorption of standing waves.

[0005] Therefore, it is necessary to provide a power splitter to reduce standing waves in the feed network and the antenna.

[0006] Summary of the Invention

[0007] The present application provides a power splitter, a feeding network, and an antenna system, which can reduce standing waves in the power splitter, the feeding network, and the antenna system.

[0008] In a first aspect, a power divider is provided for use in an antenna system, the power divider comprising: a metal floor; a metal strip line, the metal strip line being arranged on one side of the metal floor in a direction perpendicular to the metal floor, the metal strip line comprising a power dividing node, an input port, a first output port, and a second output port, the power dividing node being configured 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 dividing node and the first output port being a first output line, the first output line comprising a first node, the metal strip lines on both sides of the first node having different impedances; the metal strip line between the power dividing node and the second output port being a second output line, the second output line comprising a second node, the metal strip lines on both sides of the second node having different impedances, and the difference between the length of the metal strip line between the power dividing node and the first node and the length of the metal strip line between the power dividing node and the second node being an integer multiple of one-quarter of an operating wavelength of the antenna system.

[0009] 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.

[0010] In combination with the first aspect, in certain 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.

[0011] 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 the cancellation of the reflected standing wave.

[0012] In combination with the first aspect, in certain implementations of the first aspect, 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 metal strip line width between the first node and the second node is less than the metal strip line width between the first node and the first output port and less than the metal strip line width between the second node and the second output port.

[0013] In the embodiment 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, which 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.

[0014] 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.

[0015] In the embodiments provided in the present application, a first medium is provided between the metal strip and the metal floor, which can support the metal strip. At least a portion of the metal strip is supported by the first medium. The distribution of the first medium can also be changed in different areas of the metal strip, thereby creating 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 and achieve cancellation of the reflected standing wave.

[0016] 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.

[0017] 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.

[0018] In combination with the first aspect, in certain 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.

[0019] 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.

[0020] 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.

[0021] 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 the dimension of the first region in a direction perpendicular to the metal floor is larger than the 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 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.

[0022] 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.

[0023] In combination with the first aspect, in some implementations of the first aspect, the power divider further includes a third output port, the metal strip line between the power dividing 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.

[0024] 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.

[0025] 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 dividing 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 dividing node and the third node, and the difference between the length of the metal strip line between the power dividing node and the first node are integer multiples of one-quarter operating wavelength of the antenna system, or the length of the metal strip line between the power dividing node and the third node, and the difference between the length of the metal strip line between the power dividing node and the second node are integer multiples of one-quarter operating wavelength of the antenna system.

[0026] 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.

[0027] In combination with the first aspect, in certain implementations of the first aspect, the metal strip lines on both sides of the third node have different widths.

[0028] 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 lengths are met. This can improve the flexibility of the power divider structure setting and enable the power divider to adapt to different product forms.

[0029] In combination with the first aspect, in some implementations of the first aspect, the power divider also includes a first power dividing part and / or a second power dividing part, the first power dividing part is connected to the first output port, and the first output port is the input port of the first power dividing part, the second power dividing part is connected to the second output port, and the second output port is the input port of the second power dividing part.

[0030] In combination with the first aspect, in some implementations of the first aspect, 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.

[0031] 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. This can simplify the structure of the power divider and reduce processing complexity.

[0032] In combination with the first aspect, in certain implementations of the first aspect, the power divider includes a metal cavity, the metal cavity encloses a housing space, the metal strip line and the first medium are arranged in the housing space, and the metal floor is a portion of the metal cavity that is stacked with the metal strip line.

[0033] In combination with the first aspect, in certain 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.

[0034] 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.

[0035] In combination with the first aspect, in certain implementations of the first aspect, the metal strip is a printed circuit board structure, or the metal strip is a sheet metal strip fixed by a plastic medium.

[0036] In a second aspect, a feeding network is provided, wherein the feeding network includes the power splitter as described in the first aspect or any one implementation manner of the first aspect.

[0037] 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

[0038] FIG1 is a schematic diagram of a system architecture provided by an embodiment of the present application;

[0039] FIG2 is a schematic diagram of the internal structure of an antenna system provided in an embodiment of the present application;

[0040] FIG3 is a schematic structural diagram of a power divider provided in an embodiment of the present application;

[0041] FIG4 is a schematic structural diagram of a power divider provided in an embodiment of the present application;

[0042] FIG5 is a schematic structural diagram of a power divider provided in an embodiment of the present application;

[0043] FIG6 is a schematic structural diagram of a power divider provided in an embodiment of the present application;

[0044] FIG7 is a schematic structural diagram of a power divider provided in an embodiment of the present application;

[0045] FIG8 is a schematic structural diagram of a power divider provided in an embodiment of the present application;

[0046] FIG9 is a schematic structural diagram of a power divider provided in an embodiment of the present application;

[0047] FIG10 is a schematic structural diagram of a power divider provided in an embodiment of the present application;

[0048] FIG11 is a schematic structural diagram of a power divider provided in an embodiment of the present application;

[0049] FIG12 is a schematic structural diagram of a power divider provided in an embodiment of the present application;

[0050] FIG13 is a schematic structural diagram of a power divider provided in an embodiment of the present application;

[0051] FIG14 is a schematic structural diagram of a power divider provided in an embodiment of the present application;

[0052] FIG15 is a schematic structural diagram of a power divider provided in an embodiment of the present application;

[0053] FIG16 is a schematic structural diagram of a power divider provided in an embodiment of the present application. DETAILED DESCRIPTION

[0054] The technical solution in this application will be described below with reference to the accompanying drawings.

[0055] References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in conjunction with that embodiment is included in one or more embodiments of the present application. Thus, phrases such as "in one embodiment," "in some embodiments," "in other embodiments," and "in yet other embodiments" appearing in various places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized.

[0056] The terms "include", "comprising", "having" and variations thereof mean "including but not limited to", unless specifically emphasized otherwise.

[0057] In various embodiments of this application, the terms "first," "second," and so on are merely used to indicate that multiple objects are distinct. For example, "first output port" and "second output port" are merely used to indicate different output ports. These terms should not affect the output ports themselves or their number. The terms "first," "second," and so on should not limit the embodiments of this application in any way.

[0058] Figure 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 mast 104, a remote radio unit (RRU) 102, and a grounding device 105. Antenna 101 can be secured to mast 104 using an adjustable bracket or the like and connected to RRU 102 via feeder 103, with signals transmitted between the feeder 103 and RRU 102. Antenna 101 may also be connected to grounding device 105.

[0059] Furthermore, the antenna 101 may be co-located with the remote radio unit 112. For example, the antenna 101 and the remote radio unit 102 may be part of an active antenna unit (AAU). Alternatively, the antenna 101 may be part of a radio unit (RU), which is not limited in this application.

[0060] Figure 2 shows the main components of the antenna, which may include a radiating element, a feed network, a transmission mechanism, a calibration network, a radome, etc. The transmission mechanism may also be referred to as a transmission structure, a transmission device, a transmission part, etc., which is not limited in this application.

[0061] The radiating unit is the basic structural unit of the antenna, used to radiate or receive radio waves. The radiating unit can also be called an antenna vibrator or vibrator, etc. An antenna can include one or more radiating units, and the frequencies of different radiating units can be the same or different.

[0062] 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 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 generally be composed of an impedance transmission line, which can be in the form of a stripline, microstrip line, 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 combiners and filters.

[0063] The radome is a structural component used to protect the antenna system from external environmental influences and has excellent electromagnetic wave penetration properties. The aforementioned components, such as the radiating element, transmission mechanism, calibration network, and feed network, can be housed within the radome.

[0064] The antenna may also include a reflector, also known as a base plate, antenna panel, or metal reflective surface. This reflector can improve the antenna signal's reception sensitivity, focusing the antenna signal at the receiving point and blocking or shielding the interference of other radio waves from the opposite direction. The reflector can also be placed in a radome, with the radiating element positioned on one side of the reflector and the transmission mechanism, calibration network, and feed network located on the other side.

[0065] Standing waves in an antenna are formed by the superposition of two waves with the same frequency but in opposite directions, one of which is usually a reflection of the other. When the signal transmitted by the antenna reaches the end of the antenna but is not completely transmitted, it is reflected back, forming a standing wave. This damages the antenna signal, preventing it from being effectively transmitted to the target device, which in turn reduces the antenna's radiation efficiency and affects communication quality.

[0066] The present invention provides a power splitter, a feed network, and an antenna system to reduce standing wave levels within the power splitter, feed network, and antenna system. The power splitter can be provided within the feed network or as part of the feed network. The structure of the power splitter provided in the present invention is described in detail below with reference to Figures 3 to 15.

[0067] As shown in FIG3 , the power divider may include a metal floor 200 and a metal stripline 300. The metal stripline 300 may be arranged on one side of the metal floor 200 in a direction perpendicular to the metal floor 200, for example, along the z-axis as shown. A gap may be provided between the metal stripline 300 and the metal floor 200 to prevent direct electrical connection between the metal stripline 300 and the metal floor 200, which could cause a short circuit. The metal stripline 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 the three ends of the metal stripline 300, respectively. The metal stripline 300 may include a power splitting node A. The power splitting node A may be located at the intersection of the arm of the metal stripline 300 where the input port 301, the arm where the first output port 302, and the arm where the second output port 303 are located. The signal on the metal strip line 300 can be input through the input port 301 and split into two through the power splitter node A, and then transmitted to the first output port 302 and the second output port 303 respectively. According to the reciprocity principle, the input port and the output port can be interchanged, that is, the input port can serve as the output port, and the two output ports can serve as two input ports.

[0068] The portion of the metal stripline 300 between the power splitting node A and the first output port 302 can be the first output line, or can be understood as the arm where the first output port 302 is located. The first output line can include a first node B, and the metal stripline 300 on either side of the first node B has different impedances. The two sides of the first node B can refer to the two sides of the first node B along the first output line. For the power splitter shown in FIG3 , the two sides of the first node B can be understood as the portion from the first node B to the power splitting node A on one side, and the portion from the first node B to the portion away from the power splitting node A on the other side. The portion of the metal stripline 300 between the power splitting node A and the second output port 303 can be the second output line, or can 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 metal stripline 300 on either side of the second node C can also have different impedances. Similarly, the two sides of the second node C may refer to the two sides of the second node C along the second output line. For the power splitter shown in FIG3 , it can be understood that the portion from the second node C to the power splitting node A is one side, and the portion from the second node C to the portion away from the power splitting node A is the other side. The first node B and the second node C may also be referred to as discontinuous nodes.

[0069] In some implementations, the metal strip lines 300 on both sides of the first node B may have different widths to make the impedances of the metal strip lines 300 on both sides of the first node B different. The metal strip lines 300 on both sides of the second node C may also have different widths. The width of the metal strip lines 300 on both sides of the first node B may be the dimension of the metal strip lines 300 on both sides of the first node B perpendicular to the signal transmission direction, that is, the dimension of the metal strip lines 300 in the x-axis direction shown in the figure. The width of the metal strip lines 300 on both sides of the second node C is similar.

[0070] It should be noted that to facilitate description of the power divider structure, the positions of the power splitter node A, the first node B, and the second node C are schematically indicated as "points" in the figure. These power splitter nodes A, B, and C may not actually be points, but rather regions. For example, the power splitter node A may be the region on the metal stripline 300 where signal diversion occurs, the first node B may be the entire boundary region on the first output line where the width of the metal stripline 300 changes, and the second node C may also be the entire boundary region on the second output line where the width of the metal stripline 300 changes. In actual products, the overall width of the metal stripline 300 is relatively small, and the regions where the width changes can be roughly considered nodes.

[0071] In the power divider shown in FIG3 , the projection of the second output port 303 in a 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 in a 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 in a direction perpendicular to the metal floor 200 may both be located outside the area where the metal floor 200 is located, or may both be 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 this application does not limit this.

[0072] In some embodiments, 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 can be an integer multiple of one-quarter of the operating wavelength of the antenna system. For the metal strip line 300 shown in FIG3 , the first output line and the second output line are generally linear. The length of the metal strip line 300 between the power splitting node A and the first node B can be the dimension of the metal strip line 300 between the power splitting node A and the first node B along the illustrated y-axis. Similarly, the length of the metal strip line 300 between the power splitting node A and the second node C can be the dimension of the metal strip line 300 between the power splitting node A and the second node C along the illustrated y-axis.

[0073] In the embodiments provided herein, the difference between the length of the metal stripline 300 between the power splitting node A and the first node B and the length of the metal stripline 300 between the power splitting node A and the second node C is an integer multiple of one-quarter of the operating wavelength. This allows the reflected standing waves on the metal stripline 300 to cancel each other out, improving the standing wave tolerance of the feed network and the antenna system, thereby improving antenna performance. For example, for an antenna operating at a frequency of 2 gigahertz (GHz), the wavelength of the electromagnetic wave propagating on the metal stripline 300 is 150 millimeters (mm). When the difference between the length of the metal stripline 300 between the power splitting node A and the first node B and the length of the metal stripline 300 between the power splitting node A and the second node C is one-quarter of the operating wavelength, the phase difference between the electromagnetic wave propagating from the power splitting node A to the first node B and the electromagnetic wave propagating from the power splitting node A to the second node C on the metal stripline 300 is 90°. Consequently, the phase difference between the reflected electromagnetic waves is 180°, thereby causing the reflected electromagnetic waves to cancel each other out, that is, causing the reflected standing waves to cancel each other out.

[0074] It should be noted that in the embodiment of the present application, 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 operating wavelength. This may refer to the difference in the length of the metal strip line 300 being approximately an integer multiple of one-quarter of the operating wavelength, rather than an absolute numerical requirement. The difference in the length of the metal strip line 300 is allowed to have a certain range of deviations around one-quarter. For example, the difference in the length of the metal strip line 300 may also be an integer multiple of one-fourth of the operating wavelength. Furthermore, the difference in the length of the metal strip line 300 is an integer multiple of one-quarter of the operating wavelength, and this integer may be a non-zero integer, such as 1 times, 2 times, 3 times, 4 times, etc., of the one-quarter operating wavelength.

[0075] When the first and second output lines of the power divider include a first node and a second node, respectively, and the first and second nodes are formed by metal striplines of different widths, the power divider may further include a first dielectric. This first dielectric may be disposed between the metal floor 200 and the metal stripline 300 (not shown in FIG3 ). When the power divider includes the first dielectric, the first dielectric may cover the entire metal floor 200 or a portion of it. In other words, the metal stripline 300 may be disposed entirely on the first dielectric, or a portion of it may be disposed on the first dielectric. The first dielectric may be a non-metallic material to prevent the metal stripline 300 from short-circuiting. The position of the first dielectric may be fixed, providing support for the metal stripline. When the first dielectric provides support, it may also be referred to as a supporting dielectric. The first dielectric may also move relative to the metal stripline to adjust the phase. When the first dielectric is used to adjust the phase, it may also be referred to as a phase-shifting dielectric.

[0076] FIG4 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, which may enclose a storage space. The metal strip 300 described in FIG3 may be disposed within the storage space enclosed by the metal cavity 210. For example, the metal cavity 210 may include a floor layer 211 and sidewalls 212. The sidewalls 212 may be disposed around the periphery of the floor layer 211 to form a rectangular parallelepiped structure. There may be two floor layers 211, one disposed on either side of the metal strip 300 along the z-axis shown in the figure, and arranged in a stacked structure with the metal strip 300. The metal floor 200 is also the floor layer 211 of the metal cavity 210. For example, the floor layer 211 may be parallel to the main plane of the metal strip 300, which may be the xy plane shown in the figure.

[0077] 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.

[0078] 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.

[0079] In the power divider shown in Figures 3 and 4 , the width of the metal stripline 300 between the first node B and the second node C is greater than the width of the metal stripline 300 between the first node B and the first output port 302, and also greater than the width of the metal stripline 300 between the second node C and the second output port 303. Alternatively, the width of the metal stripline 300 between the first node B and the second node C can be less than the width of the metal stripline 300 between the first node B and the first output port 302, or greater than the width of the metal stripline 300 between the second node C and the second output port 303, as shown in the power divider structure shown in Figure 5 . Other structural features of this power divider can be similar to those of the power divider shown in Figure 3 and will not be further described here.

[0080] Similar to the structures shown in FIG. 3 and FIG. 4 , the metal strip line 300 of the structure shown in FIG. 5 may also be disposed in the metal cavity 210 , as shown in FIG. 6 , which will not be described in detail here.

[0081] In a specific implementation, in the power divider shown in Figures 3 to 6, the width of the metal stripline 300 between the power splitting node A and the first node B can be the same as the width of the metal stripline 300 between the power splitting node A and the second node C. The width of the metal stripline 300 between the first node B and the first output port 302 can also be the same as the width of the metal stripline 300 between the second node C and the second output port 303, thereby reducing the processing complexity of the power divider. The width of the metal stripline 300 between the power splitting node A and the first node B can also be different from the width of the metal stripline 300 between the power splitting node A and the second node C. The width of the metal stripline 300 between the first node B and the first output port 302 can also be different from the width of the metal stripline 300 between the second node C and the second output port 303. It is only necessary to ensure that there are regions of different widths on the first output line and the second output line to form discontinuous nodes. In addition, in the power divider shown in Figures 3 to 6, 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 can 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.

[0082] 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, as shown in the structure of FIG. 7 .

[0083] The power divider may include a first medium 400, which can be arranged between the metal floor 200 and the 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, part of the area of ​​the two output lines of the metal strip line 300 can be set on the first medium 400, and part of the area may not be set on the first medium 400.

[0084] For example, the first dielectric 400 may be strip-shaped, the first output line (the arm where the first output port is located) may be in a zigzag shape, a portion of the first output line may be supported on the first dielectric 400, and a portion may not be supported on the first dielectric 400. The first node B may be the intersection of the area where the first output line contacts the first dielectric 400 and the area where it does not contact the first dielectric 400. Because one section of the metal strip line 300 on either side of the first node B is supported on the first dielectric 400 and the other section is not supported on the first dielectric 400, the impedance of the metal strip line 300 on either side of the first node B may be different.

[0085] Similar to the structure of the first output line, the second output line can also be in a zigzag shape. The metal strip lines 300 on both sides of the second node C are supported on the first medium 400 on one side and not 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 can also be different.

[0086] The difference between the length of the metal stripline 300 between the power splitting node A and the first node B and the length of the metal stripline 300 between the power splitting node A and the second node C can be an integer multiple of one-quarter of the operating wavelength. For the metal stripline 300 shown in FIG7 , the first output line includes a bend D. The distance from the power splitting node A to the bend D can be a straight line segment, and the distance from the bend D to the first node B can also be a straight line segment. The length of the metal stripline 300 between the power splitting node A and the first node B can be the sum of the length of the metal stripline 300 between the power splitting node A and the bend D, and the length of the metal stripline 300 between the bend D and the first node B. Similarly, the length of the metal stripline 300 between the power splitting node A and the second node C can be the sum of the length of the metal stripline 300 between the power splitting node A and the bend E, and the length of the metal stripline 300 between the bend E and the second node C.

[0087] In this example, the first dielectric 400 can move relative to the metal stripline 300 and the metal floor 200 along the direction of the line connecting the first node B and the second node C. That is, the first dielectric 400 can move along the y-axis shown in the figure. When the first dielectric 400 moves along the line connecting the first node B and the second node C, the position of the first dielectric 400 relative to the metal floor 200 and the metal stripline 300 can change, thereby changing the electromagnetic field distribution around the metal stripline 300 and achieving the phase adjustment function of the power divider. When the first dielectric 400 moves relative to the metal stripline 300, the metal stripline 300 on one side of the first node B can still be supported by the first dielectric 400, and the metal stripline 300 on the other side of the first node B can still not contact the first dielectric 400. Similarly, the metal stripline 300 on the second node C can still be supported by the first dielectric 400, and the metal stripline 300 on the other side of the second node C can still not contact the first dielectric 400, and the positions of the first node B and the second node C can remain unchanged.

[0088] The metal strip line 300 may also 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 splitting 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 splitting node A and the second node C is similar to it, which will not be repeated here.

[0089] FIG8 is a side view of the structure shown in FIG7 , wherein the metal strip 300 and the first dielectric 400 are disposed within the metal cavity 210. Similar to the structures described in FIG4 and FIG6 , when the power divider includes the metal cavity 210, the power divider may include a double-layer metal floor, namely, two floor layers 211, disposed above and below the metal strip 300. Accordingly, the power divider may also include two layers of first dielectric 400, disposed between the metal strip 300 and the upper floor layer 211, and between the metal strip 300 and the lower floor layer 211, respectively. The projections of the two layers of first dielectric 400 along a direction perpendicular to the principal plane of the first dielectric 400 may overlap. In other words, discontinuous nodes may be formed between the metal strip 300 and both layers of first dielectric 400, and the locations of the discontinuous nodes formed by the two layers of first dielectric 400 may correspond to each other, collectively forming the aforementioned first node B and second node C.

[0090] The output line of the metal stripline 300 shown in Figures 7 and 8 forms a recessed structure, while the output line of the metal stripline 300 shown in Figure 9 forms a protruding structure. Similar to the metal stripline 300 structures shown in Figures 7 and 8 , the projection of the metal stripline 300 in Figure 9 onto the plane of the first medium 400, perpendicular to the principal plane of the first medium 400, is at least partially located outside the region of the first medium 400. Furthermore, the first node B may be the intersection of the region where the first output line contacts the first medium 400 and the region where it does not contact the first medium 400. The second node C may be the intersection of the region where the second output line contacts the first medium 400 and the region where it does not contact the first medium 400. The difference between the length of the metal stripline 300 between the power splitting node A and the first node C and the length of the metal stripline 300 between the power splitting node A and the second node C may be an integer multiple of one-quarter of the operating wavelength.

[0091] In the power divider described in Figures 7 to 9, the first dielectric 400 is a strip-shaped structure, and the output line of the metal strip line 300 is a zigzag line structure. The zigzag line output line has areas that contact the first dielectric 400 and areas that do not, forming an intersection. Figure 10 shows another power divider according to an embodiment of the present application. The first dielectric 400 is a plate-shaped structure, and the output line of the metal strip line 300 is a straight line structure. Alternatively, the metal strip line 300 can be a T-shaped structure. The straight line output line has areas that contact the first dielectric 400 and areas that do not, forming an intersection.

[0092] Similar to Figures 7 and 8, in the power divider shown in Figure 9, 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 supported 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 supported 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 remain unchanged.

[0093] As shown in Figure 10, the first dielectric 400 can be a plate-like structure, and the input line of the metal stripline 300 can be disposed on this first dielectric 400. This input line is the portion of the metal stripline 300 from the input port to the power splitter node A. For the first output line, the portion between the power splitter node A and the first node B can be disposed on the first dielectric 400 and in contact with the first dielectric 400, while the portion between the first node B and the first output port 302 can be disposed off the first dielectric 400. For the second output line, the portion between the power splitter node A and the second node C can be disposed on the first dielectric 400 and in contact with the first dielectric 400, while the portion between the second node C and the second output port 303 can be disposed off the first dielectric 400. Similar to the power splitter described above, the difference between the length of the metal stripline 300 between the power splitter node A and the first node B and the length of the metal stripline 300 between the power splitter node A and the second node C is an integer multiple of one-quarter of the operating wavelength.

[0094] For the power divider shown in FIG10 , the number of the first dielectrics 400 may be two, which are respectively arranged on the two side areas of the metal floor in FIG10 , that is, the area on the metal floor in FIG10 where the first dielectric 400 is not arranged, and the area where the first dielectric 400 is arranged in FIG10 may not be provided with the first dielectric 400, so that the metal strip line 300 between the first node B and the first output port 302 can be carried on the first dielectric 400 and in contact with the first dielectric 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 dielectric 400 and in contact with the first dielectric 400, while the metal strip line 300 between the first node B and the second node C is not arranged on the first dielectric 400 and does not contact the first dielectric 400.

[0095] In the power dividers described in FIG. 3 to FIG. 10 , 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.

[0096] As an example, referring to the structure shown in FIG11 , the first dielectric 400 may include a first region 401 and a second region 402. The thickness of the first region 401 may be greater than that of the second region 402. That is, the dimension of the first region 401 perpendicular to the metal floor 200 is greater than the dimension of the second region 402 perpendicular to the metal floor 200. At least portions of the first and second output lines may be supported on the first region 401. In the first output line, the metal stripline located on one side of the first node B may be supported on the first region 401, while the metal stripline 300 located on the other side of the first node B may have a gap between it and the second region 402. For example, the metal stripline 300 between the power splitter node A and the first node B may be supported on the first region 401, while the metal stripline 300 between the first node B and the first output port 302 may be located above the second region 402 along the z-axis shown in the figure, and may have a gap between it and 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 can have a gap between it and the second area 402. For example, the metal strip line 300 between the power splitter node A and the second node C can be carried on the first area 401, and the metal strip line 300 between the second node C and the second output port 303 can be located above the second area 402 along the z-axis direction shown in the figure, and can have a gap between it and the second area 402.

[0097] As another example, referring to the structure shown in FIG12 , the first dielectric 400 may include a first slot 403. The first slot 403 may extend through the first dielectric 400 in a direction perpendicular to the first dielectric 400, that is, along the z-axis, or may not extend through the first dielectric 400. The metal stripline 300 may have a T-shaped structure, and at least a portion of the first output line may be disposed above the first slot 403. In other words, the metal stripline 300 on one side of the first node B may be supported on the first dielectric 400, while the other side may be located above the first slot 403, that is, not in contact with the first dielectric 400. Similarly, the metal stripline 300 on one side of the second node C may be supported on the first dielectric 400, while the metal stripline 300 on the other side may be located above the first slot 403. The illustrated metal strip line 300 contacts the short side of the first slot body 403, with the first node B and the second node C projected perpendicularly to the metal floor 200 located on the short side of the first slot body 403. The metal strip line 300 may also contact the long side of the first slot body 403, with the first node B and the second node C projected perpendicularly to the metal floor 200 located on the long side of the first slot body 403. Furthermore, the difference between the metal strip line length between the power splitting node A and the first node B and the metal strip line length between the power splitting node A and the second node C may be an integer multiple of one-quarter of the operating wavelength. For example, when the metal strip line 300 has a zigzag structure as shown in FIG. 7 or FIG. 9 , the two output lines of the metal strip line 300 may include a bend, and the bend may contact the long side of the first slot body 403.

[0098] The widths of the first and second output lines shown in Figure 12 are smaller than the width of the first slot body 403. The widths of the first and second output lines can also be larger than the width of the first slot body 403, and this application does not limit this. For the power divider shown in Figure 12, the widths of the first and second output lines, and the first slot body 403, are the dimensions of the first and second output lines, and the first slot body 403, along the x-axis as shown. The cross-sectional shape of the first slot body 403 along the xy plane can be rectangular as shown, or it can be square, circular, elliptical, or an irregular shape, and this application does not limit this.

[0099] 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, referring to the structure shown in FIG13 (to facilitate display of the structure of the second medium 500, the metal floor 200 is omitted in FIG13. The metal floor 200 can be arranged below the second medium 500, or can be arranged above the first medium 400, or the metal floor 200 can be arranged below the second medium 500 and above the first medium 400). The metal strip line 300 can be an irregular structure, and 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 also the surface with the larger plane area of ​​the first part 501. The first part 501 can be arranged below the metal strip line 300. The second portion 502 can be fixedly connected to the first portion 501 and can extend in a direction perpendicular to the main plane of the first portion 501. The second portion 502 can be located below the metal strip line 300 (as shown in the figure as portion 502B), or can extend from below the metal strip line 300 to above the metal strip line 300 (as shown in the figure as portion 502A). 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 can pass through the through-holes 305 and extend from below the metal strip line 300 to above the metal strip line 300. The portion 502A can also be located at the edge of the second dielectric 500, extending from outside the area where the metal strip line 300 is located to above the metal strip line 300.

[0100] Similar to the second dielectric 500, the metal floor 200 may also include an extension (not shown). The metal floor 200 may be fixedly connected to the second dielectric 500 via the extension. For example, when the metal floor 200 is located below the second dielectric 500, the metal strip 300 may be disposed above the second dielectric 500 as shown in FIG13 , that is, on the side of the second dielectric 500 away from the metal floor 200. Alternatively, the metal strip 300 may be disposed on the side of the second dielectric 500 close to the metal floor 200, that is, below the second dielectric 500 and between the second dielectric 500 and the metal floor 200. When the metal strip 300 is disposed on the side of the second dielectric 500 close to the metal floor 200, a gap may exist between the metal strip 300 and the metal floor 200.

[0101] The first dielectric 400 can be disposed above the metal stripline 300. The metal stripline 300 on one side of the first node B can contact the first dielectric 400, while the metal stripline 300 on the other side may not contact the first dielectric 400. The metal stripline 300 on one side of the second node C can contact the first dielectric 400, while the metal stripline 300 on the other side may not contact the first dielectric 400. The metal stripline 300 between the power splitter node A and the first node B and the second node C must meet the aforementioned length difference requirement. The first dielectric 400 can also be disposed below the metal stripline 300, that is, between the metal stripline 300 and the second dielectric 500.

[0102] The power dividers described in Figures 3 to 13 each include two output ports, but the power divider may also include three or more output ports. For example, as shown in the structure of Figure 14, the power divider may also include a third output port 304. The portion of the metal stripline 300 from the power splitting node to the third output port 304 may be referred to as the third output line. Similarly, according to the reciprocity principle, the three output ports can function as three input ports, and the input ports can function as output ports. When the power divider includes three output lines, any two of the output lines may include discontinuous nodes and meet the aforementioned metal stripline length difference requirement. For example, the first and second output lines may include a first node B and a second node C, respectively, and the difference in the length of the metal stripline 300 between the power splitting node A and the first node B and the length of the metal stripline 300 between the power splitting node A and the second node C is an integer multiple of one-quarter of the operating wavelength. The impedance of each point on the third output line can be the same, meaning that the third output line may not be in contact with the first dielectric.

[0103] Alternatively, the first output line and the third output line may respectively include a first node B and a third node, and 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 third node is an integer multiple of one-quarter of the operating wavelength, or the second output line and the third output line may respectively include a second node C and a third node, and the difference between the length of the metal strip line 300 between the power splitting node A and the second node C and the length of the metal strip line 300 between the power splitting node and the third node is an integer multiple of one-quarter of the operating wavelength (the third node is not shown in Figure 14).

[0104] The power divider shown in FIG14 may also include a second medium 500. The second medium 500 in FIG14 is exemplarily arranged between the metal strip line 300 and the first medium 400. The structure of the second medium 500 may also be similar to the structure of the second medium 500 in FIG13 above, and will not be repeated here.

[0105] In some embodiments, all three output lines may also include discontinuous nodes. As shown in Figure 15, the third output line may include a third node H. The length of the metal strip line between the power splitting node A and the third node H, and the difference between the length of the metal strip line between the power splitting node A and the first node B can be an integer multiple of one-quarter of the operating wavelength, or the length of the metal strip line between the power splitting node A and the third node H, and the difference between the length of the metal strip line between the power splitting node A and the second node C can be an integer multiple of one-quarter of the operating wavelength.

[0106] For example, in the power divider shown in FIG15 , the length of the metal stripline 300 between the power dividing node A and the third node H is greater than the length of the metal stripline 300 between the power dividing node A and the second node C. The difference between the length of the metal stripline 300 between the power dividing node A and the third node H and the length of the metal stripline 300 between the power dividing node A and the second node C may be an integer multiple of a quarter of the operating wavelength. The difference between the length of the metal stripline 300 between the power dividing node A and the second node C and the length of the metal stripline 300 between the power dividing node A and the first node B may be an integer multiple of a quarter of the operating wavelength, or may not be an integer multiple of a quarter of the operating wavelength.

[0107] For another example, the difference between the length of the metal stripline between the power splitting node A and the first node B and the length of the metal stripline between the power splitting node A and the second node C can be an integer multiple of one-quarter of the operating wavelength. The length of the metal stripline 300 between the power splitting node A and the third node H can be the same as the length of the metal stripline 300 between the power splitting 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 splitting node A and the third node H and the length of the metal stripline between the power splitting node A and the second node C is an integer multiple of one-quarter of the operating wavelength. Similarly, the length of the metal stripline 300 between the power splitting node A and the third node can also be the same as the length of the metal stripline 300 between the power splitting node A and the second node C, and the difference between the length of the metal stripline between the power splitting node A and the third node H and the length of the metal stripline between the power splitting node A and the first node B is an integer multiple of one-quarter of the operating wavelength.

[0108] Figures 14 and 15 use the power divider including three output ports 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.

[0109] Figures 14 and 15 take the change in the distribution of the first medium 400 on the output line of the metal strip line 300 as an example to introduce the discontinuous node setting method when the power divider includes three output ports. 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, they will not be described here.

[0110] The power divider described in Figures 3 to 13 above can be a one-to-two power divider, the power divider described in Figures 14 and 15 is a one-to-three power divider, and the power divider described in Figure 16 below is a one-to-four power divider. The one-to-four power divider can include a first power dividing part and a second power dividing part. For example, the wiring can be continued based on the one-to-two power divider structure shown in Figures 3 to 13 above, and a one-to-two power divider can be connected to the first output port and the second output port respectively. The first output port can be connected to the first power dividing part, and the first output port can serve as the input port of the first power dividing part. The signal of the power divider can flow into the first power dividing part through the first output port, be split into two at the power dividing node F of the first power dividing part, and be transmitted to the output ports 304 and 305 of the first power dividing part. The second output port can be connected to the second power splitting section, and the second output port can serve as the input port of the second power splitting section. After the signal from the power splitter flows through the second output port, it is split into two at the power splitting node G of the second power splitting section and transmitted to the output ports 306 and 307 of the second power splitting section. The impedance at any location on the first power splitting section can be the same. For example, the entire first power splitting section may not be disposed on the first dielectric, or the entire first power splitting section may be disposed on the first dielectric. The entire first power splitting section may refer to the portion of the first power splitting section from the first output port 302 to ports 304 and 305. Similarly, the impedance at any location on the second power splitting section can be the same. For example, the entire second power splitting section may not be disposed on the first dielectric, or the entire second power splitting section may be disposed on the first dielectric. This is sufficient as long as the first and second output lines of the power splitter have nodes with discontinuous impedance changes, and the metal strips between the nodes meet the aforementioned difference requirements. The first power division section may also be provided with nodes with discontinuously varying impedances. For example, the first power division section may be partially supported on the first dielectric, or regions with varying line widths may exist on the first power division section. Furthermore, the discontinuous nodes on the first power division section may be provided on the arm where port 304 is located, or on the arm where port 305 is located, or both the arms where ports 304 and 305 are located may be provided with nodes with discontinuously varying impedances. Similarly, the second power division section may also be provided with nodes with discontinuously varying impedances, although this application does not limit this.

[0111] The first dielectric 400 of the power divider may further include a second slot 404, which may be disposed at an end of the first dielectric 400, and at least a portion of the output line may be disposed on the second slot 404. For example, when the power divider includes two output lines, two second slots 404 may be provided, one at each end of the first dielectric 400. The provision of the second slots 404 can achieve impedance matching between the first output line and the second output line.

[0112] It should be noted that the power divider shown in Figure 16 may also include only the first power dividing part, or only the second power dividing part. The first power dividing part and the second power dividing 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 dividing part where the signal initially flows into, 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 dividing part and / or the second power dividing part, the above-mentioned discontinuous nodes may also be formed by the discontinuous line width on the metal strip line 300.

[0113] In the embodiments described in Figures 3 to 16 above, each output line includes only one discontinuous node. Each output line may also include multiple discontinuous nodes. It is only necessary that the length of the metal strip between the discontinuous node and the power splitting node on each of the two output lines meet the above-mentioned length difference requirement. In addition, the discontinuous nodes on each output line of the power splitter are formed by a discontinuous change in the line width of the metal strip, or by a discontinuous distribution of the first medium in the signal transmission direction of the metal strip. The discontinuous nodes on the output lines may also include both of the above forms (not shown in the figures). For example, in the first output line, the metal strips 300 on both sides of the first node B have different line widths. In the second output line, the metal strip 300 on one side of the second node C is supported by the first medium 400, while the metal strip 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 either side of the first node B have different widths. Furthermore, the metal strip line 300 on one side of the first node B is supported by the first dielectric 400, while the metal strip line 300 on the other side does not contact the first dielectric 400. The second output line can be similar. That is, the discontinuity node formed by the portion of the metal strip line 300 in contact with the first dielectric 400 and the portion not in contact with the first dielectric 400 can be the same node as the discontinuity node caused by the difference in width of the metal strip line 300. The discontinuity node formed by the portion of the metal strip line 300 in contact with the first dielectric 400 and the portion not in contact with the first dielectric 400 can also be different nodes as the discontinuity node caused by the difference in width of the metal strip line 300. It is sufficient that one of the discontinuity nodes on the first output line and one of the discontinuity nodes on the second output line satisfy the aforementioned distance difference relationship.

[0114] The metal strip in the embodiment of the present application can be a PCB structure or a sheet metal strip fixed with a plastic medium, which is not limited in the present application. The power divider can be an independent power divider or a part of the feed network.

[0115] An embodiment of the present application further provides a feeding network, which includes any power splitter described in the above embodiments.

[0116] 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 can also be arranged into an antenna array.

[0117] 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.

[0118] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection 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.

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

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