Unequal power divider suitable for microstrip antenna
By designing the wire width and feed unit structure of the unequal power divider, the problem that the equal power divider cannot achieve non-uniform power distribution was solved, thus realizing the low sidelobe level and beam pointing requirements of the antenna array and improving the radiation pattern performance.
Patent Information
- Application Number
- CN202520135597.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-21
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2035-01-21
AI Technical Summary
In existing microwave communication systems, equal power dividers cannot achieve non-uniform power distribution of antenna arrays, resulting in limited radiation pattern performance and failing to meet the requirements for low sidelobe levels and beam pointing.
Design an unequal power divider suitable for microstrip antennas. By setting wires and feed units of different widths on the substrate, unequal power output can be achieved to meet the requirements of low sidelobe level and beam pointing of the antenna array.
This achieves low sidelobe levels and precise beam pointing of the antenna array, improving pattern performance.
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Figure CN223680371U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of microwave communication systems, and particularly relates to an unequal power divider suitable for a microstrip antenna. BACKGROUND
[0002] In a microwave communication system, a power divider is widely used in the feed network of a microstrip antenna array as an important passive device. At present, most commonly used power dividers adopt an equal power distribution design scheme, i.e., input power is evenly distributed to each output port. However, in actual applications, especially in occasions with strict requirements on the directional diagram of an antenna array, an equal power power divider often cannot meet the performance requirements of the system. Specifically, in an antenna array system, in order to realize low sidelobe level and precise beam pointing control, the feed amplitudes of array elements often need to be non-uniformly weighted. Due to the inherent power equal distribution characteristic, the traditional equal power power divider cannot realize such non-uniform power distribution, thereby causing the directional diagram performance of the antenna array to be limited and the requirements on sidelobe level and beam pointing to be unable to be realized. SUMMARY
[0003] The present application aims to at least solve one of the above technical problems in the prior art to some extent. To this end, the present application provides an unequal power divider suitable for a microstrip antenna, which can realize unequal power output and realize the requirements on low sidelobe level and beam pointing of an antenna array.
[0004] An unequal power divider suitable for microstrip antenna, comprising a substrate, an input port is arranged on the substrate, left-right symmetrical feed networks are arranged on the substrate, the two left-right symmetrical feed networks are connected with the input port, the feed network comprises a first feed unit, a second feed unit and a primary node, the first feed unit and the second feed unit are distributed left and right on the substrate, the first feed unit and the second feed unit are connected with the primary node, the width of the wire connected with the first feed unit of the primary node is 0.91mm, the width of the wire connected with the second feed unit of the primary node is 0.86mm, the first feed unit comprises a third feed unit, a fourth feed unit and a first secondary node, the third feed unit and the fourth feed unit are distributed left and right on the substrate, the third feed unit and the fourth feed unit are connected with the first secondary node, the width of the wire connected with the third feed unit of the first secondary node is 0.92mm, the width of the wire connected with the fourth feed unit of the first secondary node is 0.78mm, the second feed unit comprises a fifth feed unit, a sixth feed unit and a second secondary node, the fifth feed unit and the sixth feed unit are distributed left and right on the substrate, the fifth feed unit and the sixth feed unit are connected with the second secondary node, the width of the wire connected with the fifth feed unit of the second secondary node is 0.87mm, the width of the wire connected with the sixth feed unit of the second secondary node is 0.84mm, the sixth feed unit comprises a seventh feed unit, an eighth feed unit and a first tertiary node, the seventh feed unit and the eighth feed unit are distributed left and right on the substrate, the seventh feed unit and the eighth feed unit are connected with the first tertiary node, the width of the wire connected with the seventh feed unit of the first tertiary node is 0.99mm, the width of the wire connected with the eighth feed unit of the first tertiary node is 0.704mm, the eighth feed unit comprises a ninth feed unit, a tenth feed unit and a first quaternary node, the ninth feed unit and the tenth feed unit are distributed left and right on the substrate, the ninth feed unit and the tenth feed unit are connected with the first quaternary node, the width of the wire connected with the ninth feed unit of the first quaternary node is 0.84mm, the width of the wire connected with the tenth feed unit of the first quaternary node is 0.81mm, the third feed unit comprises a first output port, a second output port and a second tertiary node, the first output port and the second output port are distributed left and right on the substrate, the first output port and the second output port are connected with the second tertiary node, the width of the wire connected with the first output port of the second tertiary node is 0.87mm, the width of the wire connected with the second output port of the second tertiary node is 0.84mm, the fourth feeding unit comprises a third output port, a fourth output port and a third tertiary node, the third output port and the fourth output port are distributed left and right on the substrate, the third output port and the fourth output port are both connected with the third tertiary node, the width of the wire connected with the third output port of the third tertiary node is 0.907mm, the width of the wire connected with the fourth output port of the third tertiary node is 0.798mm, the fifth feeding unit comprises a fifth output port, a sixth output port and a fourth tertiary node, the fifth output port and the sixth output port are distributed left and right on the substrate, the fifth output port and the sixth output port are both connected with the fourth tertiary node, the width of the wire connected with the fifth output port of the fourth tertiary node is 0.916mm, the width of the wire connected with the sixth output port of the fourth tertiary node is 0.788, the seventh feeding unit comprises a seventh output port, an eighth output port and a second quaternary node, the seventh output port and the eighth output port are distributed left and right on the substrate, the seventh output port and the eighth output port are both connected with the second quaternary node, the width of the wire connected with the seventh output port of the second quaternary node is 0.81mm, the width of the wire connected with the eighth output port of the second quaternary node is 0.81mm, the ninth feeding unit comprises a ninth output port, a tenth output port and a first quinary node, the ninth output port and the tenth output port are distributed left and right on the substrate, the ninth output port and the tenth output port are both connected with the first quinary node, the width of the wire connected with the ninth output port of the first quinary node is 0.78mm, the width of the wire connected with the tenth output port of the first quinary node is 0.78mm, the tenth feeding unit comprises an eleventh output port, a twelfth output port and a second quinary node, the eleventh output port and the twelfth output port are distributed left and right on the substrate, the eleventh output port and the twelfth output port are both connected with the second quinary node, the width of the wire connected with the eleventh output port of the second quinary node is 0.78mm, the width of the wire connected with the twelfth output port of the second quinary node is 0.78mm.
[0005] In optional or preferred embodiments, the unequal power divider is connected with the microstrip antenna through a flange type electrical connector.
[0006] In optional or preferred embodiments, the interval between two adjacent output ports is 31mm.
[0007] In optional or preferred embodiments, the thickness of the substrate is 0.508mm.
[0008] In an optional or preferred embodiment, the dielectric constant of the substrate is 2.2.
[0009] In an optional or preferred embodiment, the material used for the substrate is F4BTMS220.
[0010] Based on the above technical solutions, the embodiments of the present application have at least the following beneficial effects: the different wire widths on the nodes of different levels can realize the output of unequal power, and realize the requirements of low sidelobe level and beam pointing of the antenna array. BRIEF DESCRIPTION OF DRAWINGS
[0011] The present application will be further described below with reference to the accompanying drawings and embodiments;
[0012] Figure 1 is a distribution diagram of the first feeding unit and the second feeding unit of the unequal power divider suitable for the microstrip antenna provided by the embodiments of the present application;
[0013] Figure 2 is a distribution diagram of the third feeding unit, the fourth feeding unit, the fifth feeding unit and the sixth feeding unit of the unequal power divider suitable for the microstrip antenna provided by the embodiments of the present application;
[0014] Figure 3 is a distribution diagram of the seventh feeding unit, the eighth feeding unit, the first output port, the second output port, the third output port, the fourth output port, the fifth output port and the sixth output port of the unequal power divider suitable for the microstrip antenna provided by the embodiments of the present application;
[0015] Figure 4 is a distribution diagram of the ninth feeding unit, the tenth feeding unit, the seventh output port and the eighth output port of the unequal power divider suitable for the microstrip antenna provided by the embodiments of the present application;
[0016] Figure 5 is a distribution diagram of the ninth output port, the tenth output port, the eleventh output port and the twelfth output port of the unequal power divider suitable for the microstrip antenna provided by the embodiments of the present application. DETAILED DESCRIPTION
[0017] In order for those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.
[0018] The embodiments of the present application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the present application but cannot be used to limit the scope of the present application.
[0019] In the description of the embodiments of the present application, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the embodiments of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0020] In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.
[0021] In the embodiments of the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be that the first feature is directly above or obliquely above the second feature, or it can only mean that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be that the first feature is directly below or obliquely below the second feature, or it can only mean that the horizontal height of the first feature is less than that of the second feature.
[0022] In microwave communication systems, power dividers as important passive devices are widely used in the feed network of microstrip antenna arrays. At present, the commonly used power dividers mostly adopt the design scheme of equal power distribution, that is, the input power is evenly distributed to each output port. However, in actual application, especially in occasions with strict requirements on the directional diagram of the antenna array, the equal power power divider often cannot meet the performance requirements of the system. Specifically, in the antenna array system, in order to realize low sidelobe level and accurate beam pointing control, the feed amplitudes of the array elements often need to be non-uniformly weighted. Due to the inherent power equalization characteristic, the traditional equal power power divider cannot realize such non-uniform power distribution, thereby leading to the directional diagram performance of the antenna array being limited and the requirements on the sidelobe level and beam pointing being unable to be realized.
[0023] Reference Figures 1 to 5The application provides an unequal power divider for a microstrip antenna, which comprises a substrate 100, an input port 101 arranged on the substrate 100, and left-right symmetrical feed networks 200 arranged on the substrate 100, wherein the two left-right symmetrical feed networks 200 are connected with the input port 101, the feed network 200 comprises a first feed unit 201, a second feed unit 202 and a primary node 203, the first feed unit 201 and the second feed unit 202 are left-right distributed on the substrate 100, the first feed unit 201 and the second feed unit 202 are connected with the primary node 203, the width of the wire connected with the first feed unit 201 of the primary node 203 is 0.91 mm, the width of the wire connected with the second feed unit 202 of the primary node 203 is 0.86 mm, the first feed unit 201 comprises a third feed unit 204, a fourth feed unit 205 and a first secondary node 206, the third feed unit 204 and the fourth feed unit 205 are left-right distributed on the substrate 100, the third feed unit 204 and the fourth feed unit 205 are connected with the first secondary node 206, the width of the wire connected with the third feed unit 204 of the first secondary node 206 is 0.92 mm, the width of the wire connected with the fourth feed unit 205 of the first secondary node 206 is 0.78 mm, the second feed unit 202 comprises a fifth feed unit 207, a sixth feed unit 208 and a second secondary node 209, the fifth feed unit 207 and the sixth feed unit 208 are left-right distributed on the substrate 100, the fifth feed unit 207 and the sixth feed unit 208 are connected with the second secondary node 209, the width of the wire connected with the fifth feed unit 207 of the second secondary node 209 is 0.87 mm, the width of the wire connected with the sixth feed unit 208 of the second secondary node 209 is 0.84 mm, the sixth feed unit 208 comprises a seventh feed unit 210, an eighth feed unit 211 and a first tertiary node 212, the seventh feed unit 210 and the eighth feed unit 211 are left-right distributed on the substrate 100, the seventh feed unit 210 and the eighth feed unit 211 are connected with the first tertiary node 212, the width of the wire connected with the seventh feed unit 210 of the first tertiary node 212 is 0.99 mm, the width of the wire connected with the eighth feed unit 211 of the first tertiary node 212 is 0.704 mm, the eighth feed unit 211 comprises a ninth feed unit 213, a tenth feed unit 214 and a first quaternary node 215, the ninth feed unit 213 and the tenth feed unit 214 are left-right distributed on the substrate 100, the ninth feed unit 213 and the tenth feed unit 214 are connected with the first quaternary node 215, the width of the wire connected with the ninth feed unit 213 of the first quaternary node 215 is 0.84 mm, and the width of the wire connected with the tenth feed unit 214 of the first quaternary node 215 is 0.81mm, the third feeding unit 204 includes the first output port 216, the second output port 217 and the second tertiary node 218, the first output port 216 and the second output port 217 are distributed left and right on the substrate 100, the first output port 216 and the second output port 217 are connected with the second tertiary node 218, the width of the wire connected with the first output port 216 of the second tertiary node 218 is 0.87mm, the width of the wire connected with the second output port 217 of the second tertiary node 218 is 0.84mm, the fourth feeding unit 205 includes the third output port 219, the fourth output port 220 and the third tertiary node 221, the third output port 219 and the fourth output port 220 are distributed left and right on the substrate 100, the third output port 219 and the fourth output port 220 are connected with the third tertiary node 221, the width of the wire connected with the third output port 219 of the third tertiary node 221 is 0.907mm, the width of the wire connected with the fourth output port 220 of the third tertiary node 221 is 0.798mm, the fifth feeding unit 207 includes the fifth output port 222, the sixth output port 223 and the fourth tertiary node 224, the fifth output port 222 and the sixth output port 223 are distributed left and right on the substrate 100, the fifth output port 222 and the sixth output port 223 are connected with the fourth tertiary node 224, the width of the wire connected with the fifth output port 222 of the fourth tertiary node 224 is 0.916mm, the width of the wire connected with the sixth output port 223 of the fourth tertiary node 224 is 0.788, the seventh feeding unit 210 includes the seventh output port 225, the eighth output port 226 and the second quaternary node 227, the seventh output port 225 and the eighth output port 226 are distributed left and right on the substrate 100, the seventh output port 225 and the eighth output port 226 are connected with the second quaternary node 227, the width of the wire connected with the seventh output port 225 of the second quaternary node 227 is 0.81mm, the width of the wire connected with the eighth output port 226 of the second quaternary node 227 is 0.81mm, the ninth feeding unit 213 includes the ninth output port 228, the tenth output port 229 and the first quinary node 230, the ninth output port 228 and the tenth output port 229 are distributed left and right on the substrate 100, the ninth output port 228 and the tenth output port 229 are connected with the first quinary node 230, the width of the wire connected with the ninth output port 228 of the first quinary node 230 is 0.78mm, the width of the wire connected with the tenth output port 229 of the first quinary node 230 is 0.78mm, the tenth feeding unit 214 includes an eleventh output port 231, a twelfth output port 232 and a second fifth-level node 233, the eleventh output port 231 and the twelfth output port 232 are distributed left and right on the substrate 100, the eleventh output port 231 and the twelfth output port 232 are connected with the second fifth-level node 233, the width of the wire connected with the eleventh output port 231 of the second fifth-level node 233 is 0.78mm, and the width of the wire connected with the twelfth output port 232 of the second fifth-level node 233 is 0.78mm.
[0024] The present application is a 1:48 unequal power divider, so the present application is provided with one input end, and each output port has two output ends, so there are totally 48 output ends left and right.
[0025] The present application can realize unequal power output through different wire widths of each level node, realize the requirements of low sidelobe level and beam pointing of the antenna array.
[0026] In some embodiments, the unequal power divider is connected with the microstrip antenna through a flange type electrical connector. In this way, the use of cable connection is avoided, and the cost is greatly saved by directly connecting with the antenna subarray.
[0027] In some embodiments, the spacing between each output port is 31mm.
[0028] In some embodiments, the thickness of the substrate 100 is 0.508mm.
[0029] In some embodiments, the dielectric constant of the substrate 100 is 2.2.
[0030] In some embodiments, the material used for the substrate 100 is F4BTMS220. F4BTMS220 is a high-frequency copper-clad plate (PCB substrate material) belonging to PTFE (polytetrafluoroethylene) composite material.
[0031] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.
[0032] The embodiments of the present application are described in detail above with reference to the accompanying drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present application.
Claims
1. A ratable power divider suitable for use with a microstrip antenna, characterized by: The application relates to a substrate provided with an input port and left-right symmetrical feed networks, both of which are connected with the input port, the feed networks comprising a first feed unit, a second feed unit and a primary node, the first feed unit and the second feed unit being left-right distributed on the substrate, both of which are connected with the primary node, the width of the wire connected with the first feed unit being 0.91 mm, the width of the wire connected with the second feed unit being 0.86 mm, the first feed unit comprising a third feed unit, a fourth feed unit and a first secondary node, the third feed unit and the fourth feed unit being left-right distributed on the substrate, both of which are connected with the first secondary node, the width of the wire connected with the third feed unit being 0.92 mm, the width of the wire connected with the fourth feed unit being 0.78 mm, the second feed unit comprising a fifth feed unit, a sixth feed unit and a second secondary node, the fifth feed unit and the sixth feed unit being left-right distributed on the substrate, both of which are connected with the second secondary node, the width of the wire connected with the fifth feed unit being 0.87 mm, the width of the wire connected with the sixth feed unit being 0.84 mm, the sixth feed unit comprising a seventh feed unit, an eighth feed unit and a first tertiary node, the seventh feed unit and the eighth feed unit being left-right distributed on the substrate, both of which are connected with the first tertiary node, the width of the wire connected with the seventh feed unit being 0.99 mm, the width of the wire connected with the eighth feed unit being 0.704 mm, the eighth feed unit comprising a ninth feed unit, a tenth feed unit and a first quaternary node, the ninth feed unit and the tenth feed unit being left-right distributed on the substrate, both of which are connected with the first quaternary node, the width of the wire connected with the ninth feed unit being 0.84 mm, the width of the wire connected with the tenth feed unit being 0.81 mm, the third feed unit comprising a first output port, a second output port and a second tertiary node, the first output port and the second output port being left-right distributed on the substrate, both of which are connected with the second tertiary node, the width of the wire connected with the first output port being 0.87 mm, the width of the wire connected with the second output port being 0.84mm, the fourth feeding unit comprises a third output port, a fourth output port and a third tertiary node, the third output port and the fourth output port are distributed left and right on the substrate, the third output port and the fourth output port are connected with the third tertiary node, the width of the wire connected with the third output port of the third tertiary node is 0.907mm, the width of the wire connected with the fourth output port of the third tertiary node is 0.798mm, the fifth feeding unit comprises a fifth output port, a sixth output port and a fourth tertiary node, the fifth output port and the sixth output port are distributed left and right on the substrate, the fifth output port and the sixth output port are connected with the fourth tertiary node, the width of the wire connected with the fifth output port of the fourth tertiary node is 0.916mm, the width of the wire connected with the sixth output port of the fourth tertiary node is 0.788, the seventh feeding unit comprises a seventh output port, an eighth output port and a second quaternary node, the seventh output port and the eighth output port are distributed left and right on the substrate, the seventh output port and the eighth output port are connected with the second quaternary node, the width of the wire connected with the seventh output port of the second quaternary node is 0.81mm, the width of the wire connected with the eighth output port of the second quaternary node is 0.81mm, the ninth feeding unit comprises a ninth output port, a tenth output port and a first quinary node, the ninth output port and the tenth output port are distributed left and right on the substrate, the ninth output port and the tenth output port are connected with the first quinary node, the width of the wire connected with the ninth output port of the first quinary node is 0.78mm, the width of the wire connected with the tenth output port of the first quinary node is 0.78mm, the tenth feeding unit comprises an eleventh output port, a twelfth output port and a second quinary node, the eleventh output port and the twelfth output port are distributed left and right on the substrate, the eleventh output port and the twelfth output port are connected with the second quinary node, the width of the wire connected with the eleventh output port of the second quinary node is 0.78mm, the width of the wire connected with the twelfth output port of the second quinary node is 0.78mm.
2. The unequal power divider suitable for microstrip antenna according to claim 1, characterized in that: The unequal power divider is connected with the microstrip antenna through a flange type electrical connector.
3. The unequal power divider suitable for microstrip antenna according to claim 1, characterized in that: The interval between two adjacent output ports is 31 mm.
4. The unequal power divider suitable for microstrip antenna according to claim 1, characterized in that: The thickness of the substrate is 0.508 mm.
5. The unequal power divider suitable for microstrip antenna according to claim 1, characterized in that: The dielectric constant of the substrate is 2.
2.
6. The unequal power divider suitable for microstrip antenna according to claim 1, characterized in that: The material used for the substrate is F4BTMS220.