Laminated strip line laminated power divider
By designing a laminated stripline power divider, the problems of large size and low space utilization of Wilkinson microstrip power dividers were solved, realizing the miniaturization of power dividers and the integration of multiple power dividers, thus meeting electrical performance indicators.
Patent Information
- Application Number
- CN202520312414.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-02-26
AI Technical Summary
Existing Wilkinson microstrip power dividers are large in size due to severe radiation, making it impossible to place multiple power dividers in a limited space, and requiring additional air cavities to increase mass.
It adopts a laminated stripline stacked structure, which stacks multiple power divider units. The stacked structure composed of metal housing and internal cavity mounting plate reduces the size of a single power divider, and improves space utilization through staggered arrangement and heat dissipation hole design.
It achieves miniaturization and integration of power dividers, effectively utilizes limited space, meets electrical performance indicators, and eliminates the need for additional air cavities. The size of a single power divider is only 1.7mm, and multiple power dividers can be integrated into one unit.
Smart Images
Figure CN223927637U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the miniaturization design technical field of power divider, especially relates to a laminated strip line laminated power divider. BACKGROUND
[0002] Power divider (abbreviation is power divider) is a kind of passive device that one input signal is divided into two or more equal or unequal power signals.The planar transmission line commonly used in prior art is strip line, it is a thin conductor band with width W placed in the middle between two wide conductor ground planes with distance b, the whole space between the two ground planes is filled with dielectric, Figure 1 It is the schematic diagram of strip line structure.
[0003] Since the field of microstrip line used by Wilkinson microstrip power divider is semi-open, radiation is relatively serious, in order to prevent electromagnetic leakage, metal box is used to cover microstrip power divider in engineering application, air cavity is formed, thereby leading to the overall size of power divider is large, mass is increased.In limited space, it is unable to meet the demand of placing multiple power dividers.
[0004] How to solve the above technical problems, how to design a new type of small, compact power divider has long plagued the field of technical personnel. INVENTION CONTENTS
[0005] In view of the above technical problems, the utility model provides a laminated strip line laminated power divider, the power divider adopts the structure of strip line power divider lamination, and multiple power dividers can be integrated miniaturization and integration through the lamination between layers, which can effectively utilize limited space and meet the electrical performance indicators of products.
[0006] The utility model solves the above problems through the following technical means:
[0007] A laminated strip line laminated power divider, characterized by comprising metal shell, laminated strip line power divider plate and inner cavity mounting plate, wherein: the top of the metal shell is detachably provided with a cover plate, a plurality of input ports are equidistantly arranged on one side of the metal shell, a plurality of output ports are equidistantly arranged on the other side of the metal shell, and the middle part of the metal shell is concave to form a cavity; the laminated strip line power divider plate is installed in the positioning groove of the inner cavity mounting plate, and the inner cavity mounting plate is fixed in the mounting hole at the bottom of the cavity by positioning screw;One laminated strip line power divider plate and one inner cavity mounting plate form a laminated strip line power divider unit, and a plurality of laminated strip line power divider units are stacked and integrally installed in the cavity;The laminated strip line power divider plate is composed of circuit board, impedance conversion plate and middle semi-solid sheet.
[0008] Preferably, the impedance conversion board is provided with a four-way strip-line power division network.
[0009] Preferably, the circuit board is shaped in accordance with the impedance conversion board, and the circuit board is provided with wiring openings at the total port and the branch port, the wiring openings being used to expose the strip lines of the impedance conversion board, and the ends of the strip lines are connected with radio frequency connectors.
[0010] Preferably, the radio frequency connectors are mounted in the input port or the output port.
[0011] Preferably, the circuit board is uniformly provided with a plurality of heat dissipation holes.
[0012] Preferably, the adjacent laminated strip-line power division units are arranged in a staggered manner, and the overhanging part of the top laminated strip-line power division unit is mounted on the positioning table of the cavity.
[0013] The utility model has the following beneficial effects:
[0014] The laminated strip-line power divider uses laminated strip lines to replace the traditional single-layer microstrip board circuit, does not need to additionally increase air cavities, can effectively reduce the size of a single power divider, and after design, the size of a single power divider is only about 1.7 mm, which is far less than the size of a single Wilkinson microstrip power divider with air cavities. After the stacking of the layers, the larger the number of layers is, the higher the space utilization is, and multiple power dividers can be integrated, which can effectively utilize the limited space and meet the electrical performance indicators of products. BRIEF DESCRIPTION OF DRAWINGS
[0015] In order to more clearly illustrate the technical scheme of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to the drawings without creative labor.
[0016] Figure 1 It is a schematic diagram of the existing strip line structure.
[0017] Figure 2 It is a schematic diagram of the external structure of the utility model;
[0018] Figure 3 It is a schematic diagram of the internal structure of the utility model;
[0019] Figure 4 It is a schematic diagram of the disassembly of the utility model;
[0020] Figure 5 It is a schematic diagram of the laminated strip-line power divider board structure of the utility model;
[0021] Figure 6 It is the laminated strip line power division board stacking structure schematic diagram of the utility model;
[0022] Figure 7 It is the laminated strip line power division board back surface schematic diagram of the utility model.
[0023] Wherein, 1-metal shell, 101-cover plate, 102-input port, 103-output port, 104-cavity, 105-positioning platform, 106-mounting hole, 2-laminated strip line power division board, 201-circuit board, 202-impedance conversion board, 203-semi-cured sheet, 204-wiring opening, 205-strip line, 206-radio frequency connector, 207-heat dissipation hole, 3-inner cavity mounting plate, 301-positioning groove, 302-positioning screw. DETAILED DESCRIPTION
[0024] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. The terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included one or more features. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.
[0025] The utility model will be described in detail below in combination with the drawings.
[0026] As Figures 2 to 7 Indicated, the laminated strip line laminated power divider includes metal shell 1, laminated strip line power division board 2 and inner cavity mounting plate 3, in the drawing, the top of metal shell 1 detachably installs cover plate 101, a plurality of input ports 102 are equidistantly arranged on one side of metal shell 1, a plurality of output ports 103 are equidistantly arranged on the other side of metal shell 1, and the middle part of metal shell 1 is concave to form cavity 104. Specifically, metal shell 1 can prevent electromagnetic leakage.
[0027] In the figure, the inner cavity mounting plate 3 is a square plate structure for supporting and isolating, the laminated strip line power division plate 2 is mounted in the positioning groove 301 of the inner cavity mounting plate 3, the shape of the positioning groove 301 is consistent with the shape of the laminated strip line power division plate 2, and the inner cavity mounting plate 3 is fixed in the mounting hole 106 at the bottom of the cavity 104 by the positioning screw 302.
[0028] In actual application, one laminated strip line power division plate 2 and one inner cavity mounting plate 3 form one laminated strip line power division unit, and multiple laminated strip line power division units are stacked and integrally mounted in the cavity 104.
[0029] It should be noted that the laminated strip line power division plate 2 is composed of the circuit board 201, the impedance transformation plate 202, and the semi-cured sheet 203 in the middle. Specifically, the impedance transformation plate 202 is designed as a one-to-four strip line power division network circuit board by using the principle of impedance transformer, the shape of the circuit board 201 is consistent with the shape of the impedance transformation plate 202, the circuit board 201 is provided with a wiring opening 204 at the total port and the branch port, the wiring opening 204 is used to expose the strip line 205 of the impedance transformation plate 202, and the end of the strip line 205 is connected with the radio frequency connector 206. The semi-cured sheet 203 bonds the circuit board 201 and the impedance transformation plate 202, so that they form an integral plate.
[0030] In the embodiment, the radio frequency connector 206 is mounted in the input port 102 or the output port 103. The circuit board 201 is uniformly provided with multiple heat dissipation holes 207.
[0031] It should be noted that the adjacent laminated strip line power division units are arranged in a staggered manner, and the overhanging part of the laminated strip line power division unit at the top is mounted on the positioning table 105 of the cavity 104. The staggered arrangement can further compress the thickness, stagger the radio frequency connectors, and facilitate heat dissipation.
[0032] In actual application, the input and output of the power divider adopt microstrip transmission lines with characteristic impedance of 50 Ω, the circuit board adopts Guoneng board, the board material is PTEE ceramic glass fiber cloth laminated board, the strip line metal layer is uniformly distributed on the circuit board substrate, the circuit board is fixed in the cavity, the input port and the output port are connected with radio frequency connectors, both are 50 ohm SMP female connectors, the cavity and the cover plate adopt conductive aluminum oxide alloy material, the laminated strip line multilayer power divider adopts laminated strip line instead of traditional single layer microstrip board circuit, does not need to additionally increase air cavity, can effectively reduce the size of single power divider, the size of single power divider is only about 1.7 mm after design, is much smaller than the size of single Wilkinson microstrip power divider with air cavity, after the placement of each layer, the more the layers, the higher the space utilization, can realize the integration of multiple power dividers, can effectively utilize the limited space, and can meet the electrical performance index of the product.
[0033] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims
1. A laminated stripline stacked power divider, characterized by, It comprises a metal shell (1), a laminated strip line power division board (2) and an inner cavity mounting plate (3), wherein: The top of the metal shell (1) is detachably mounted with a cover plate (101), a plurality of input ports (102) are equidistantly arranged on one side of the metal shell (1), a plurality of output ports (103) are equidistantly arranged on the other side of the metal shell (1), and the middle part of the metal shell (1) is concave to form a cavity (104); The laminated strip line power division board (2) is mounted in the positioning groove (301) of the inner cavity mounting plate (3), and the inner cavity mounting plate (3) is fixed in the mounting hole (106) at the bottom of the cavity (104) by the positioning screw (302); One laminated strip line power division board (2) and one inner cavity mounting plate (3) form a laminated strip line power division unit, and a plurality of the laminated strip line power division units are stacked and integrally mounted in the cavity (104); The laminated strip line power division board (2) is composed of a circuit board (201), an impedance conversion board (202) and a semi-cured sheet (203) in the middle.
2. The laminated stripline cascade power divider of claim 1, wherein, The impedance conversion board (202) is provided with a four-way strip line power division network.
3. The laminated stripline cascade power divider of claim 1, wherein, The shape of the circuit board (201) is consistent with that of the impedance conversion board (202), the circuit board (201) is provided with a wiring opening (204) at the total port and the branch port, the wiring opening (204) is used for exposing the strip line (205) of the impedance conversion board (202), and the end of the strip line (205) is connected with a radio frequency connector (206).
4. The laminated stripline cascade power divider of claim 3, wherein, The radio frequency connector (206) is mounted in the input port (102) or the output port (103).
5. The laminated stripline layer divider of claim 1, wherein, A plurality of heat dissipation holes (207) are uniformly arranged on the circuit board (201).
6. The laminated stripline layer-by-layer power divider of claim 1, wherein, The adjacent laminated strip line power division units are arranged in a staggered manner, and the overhanging part of the laminated strip line power division unit at the top is mounted on the positioning table (105) of the cavity (104).