Supporting structure of metal integrated suspension line structure and metal integrated suspension line structure

Abstract

The invention discloses a supporting structure of a metal integrated suspension line structure and the metal integrated suspension line structure. The supporting structure of the metal integrated suspension line structure is made of an insulating material, and the dielectric constant, the thermal stability, the mechanical property and the corrosion resistance of the insulating material meet preset requirements; the metal integrated suspension line structure is provided with a first side portion and a second side portion, the first side portion is opposite to the second side portion, the first side portion is provided with at least one concave portion used for being embedded with a side wall protrusion of the metal integrated suspension line structure to be fixed, the second side portion is provided with at least one U-shaped clamping supporting portion, and the U-shaped clamping supporting portion is used for clamping the metal integrated suspension line structure. The clamping device is used for supporting and fixing the suspension circuit of the middle layer of the metal integrated suspension line after clamping the suspension circuit. According to the invention, the whole circuit of the metal integrated suspended line structure can be effectively supported and fixed, and the design flexibility of a microwave circuit and the reliability and stability of the microwave circuit in practical application can be improved.

Description

Technical Field

[0001] The present invention relates to the field of microwave technology, and in particular to a support structure for a Metal Integrated Suspended Line (MISL) structure and the MISL structure. Background Art

[0002] With the rapid development of wireless communication technology, the performance requirements for microwave devices are becoming increasingly stringent. Designing high-performance and high-reliability RF microwave devices is a current research hotspot. The size of microwave components is comparable to the wavelength of their operating frequency, which means that even the smallest manufacturing errors during the microwave device manufacturing process can affect the performance of the microwave device.

[0003] Therefore, in the design and manufacturing process of RF microwave devices, we face problems such as large dielectric loss in the transmission line structure of RF microwave devices, easy crosstalk between different devices and systems, insufficient flexibility in device design and manufacturing, and large size that is not conducive to integration and packaging.

[0004] Metal Integrated Suspended Line (MISL) is a new type of transmission line structure. It consists of a multi-layer metal line structure, has no dielectric substrate, and has the characteristics of self-packaging. This makes it suitable for many high-performance, low-loss, compact microwave circuit designs, and enables microwave circuits to have high design flexibility, high integration and high manufacturing precision.

[0005] Although the metal integrated suspension line structure has the advantages mentioned above, the circuit suspension characteristics of the structure limit the mechanical stability and manufacturing accuracy of the structure, and also limit the flexibility of using the transmission line structure for microwave circuit design. Summary of the Invention

[0006] The present invention aims to overcome the shortcomings and drawbacks of the prior art by providing a support structure for a metal integrated suspension line structure and a metal integrated suspension line structure. The support structure is constructed of materials with good insulation, a low dielectric constant, good thermal stability and mechanical properties, and corrosion resistance. This structure provides stable mechanical support for the suspension circuitry within the metal integrated suspension line structure, minimizing the impact on the overall performance of the components during circuit operation.

[0007] The first purpose of the present invention is to provide a support structure for a metal integrated suspension line structure, which is made of insulating material, and the dielectric constant, thermal stability, mechanical properties and corrosion resistance of the insulating material meet the preset requirements; it has a first side and a second side, the first side is opposite to the second side, the first side has at least one recessed portion, which is used to engage with the side wall protrusion of the metal integrated suspension line structure for fixation, and the second side is formed with at least one U-shaped clamping support portion, which is used to clamp the suspension circuit of the middle layer of the metal integrated suspension line for support and fixation.

[0008] Preferably, the recessed portion is a groove formed by inward depression of the surface of the first side portion, and the shape of the groove is adapted to the shape of the protrusion on the side wall.

[0009] Preferably, the opening width of the clamping support portion is adapted to the thickness of the suspension circuit.

[0010] Preferably, the insulating material is made of polymer material.

[0011] Preferably, the insulating material comprises one of polytetrafluoroethylene, polyethylene, and fluorinated ethylene propylene copolymer.

[0012] The metal integrated suspension line support structure of this invention overcomes the mechanical stability deficiencies of existing circuits and significantly enhances the flexibility of microwave circuit design. The sidewall protrusions used to secure the support structure function as ground capacitance at microwave frequencies, enabling tuning of the main suspension circuit and increasing the flexibility of circuit design.

[0013] The support structure of the present invention is constructed using materials with good insulation, low dielectric constant, good thermal stability and mechanical properties, and corrosion resistance (such as polytetrafluoroethylene (PTFE), polyethylene (PE), fluorinated ethylene propylene copolymer (FEP), etc.). The support structure is embedded in the metal integrated suspension line structure by utilizing the protrusions on the cavity side wall to fix the support structure. Then, the support structure forms a clip-like structure to clamp the suspension circuit of the middle layer of the metal integrated suspension line, thereby achieving a supporting effect on the overall circuit of the metal integrated suspension line structure.

[0014] The material used in the support structure of the present invention effectively reduces signal transmission losses in high-frequency applications, with minimal impact on circuit performance. It also effectively supports and secures the metal integrated suspension structure, increasing the flexibility of microwave circuit design and the reliability and stability of microwave circuits in practical applications. Furthermore, the protrusions on the sidewalls of the metal integrated suspension structure, embedded in the support structure, can be used for circuit tuning during circuit design, further enhancing the degree of freedom in circuit design.

[0015] The second purpose of the present invention is to provide a metal integrated suspension line structure, which is a closed self-encapsulated structure formed by stacking multiple layers of metal plates from top to bottom, and its internal middle layer includes at least one suspension circuit, and a support structure of the metal integrated suspension line structure is arranged between the suspension circuit and the inner side wall of the metal plate of the layer in which it is located, and the support structure of the metal integrated suspension line structure is used to support and fix the suspension circuit and the metal plate of the layer in which it is located.

[0016] Preferably, the inner sidewalls of the metal plate of the suspension circuit and the layer where the suspension circuit is located are preset with at least one sidewall protrusion that matches with the concave portion of the support structure of the metal integrated suspension line structure.

[0017] Preferably, the side wall protrusion and the metal plate of the layer where it is located are an integrally processed structure.

[0018] Preferably, the suspension circuit includes a microwave circuit.

[0019] Preferably, screw holes are punched on the edges of the metal plate structure and the overall structure is assembled using screws.

[0020] The support structure of the metal-integrated suspension structure of the present invention is applied to a metal-integrated suspension platform. The microwave circuit of this metal-integrated suspension platform structure is composed of multiple layers of metal plates. The top and bottom layers of the metal-integrated suspension structure serve as metal covers to form a closed structure. The multiple layers of metal plates in the middle alternately form cavities and support the main circuit, thereby suspending the multi-layer main circuit. Screws can be used to fasten the multiple layers of metal plates together through metallized through-holes to complete the assembly of the overall circuit.

[0021] The clip-shaped support structure arranged on the metal integrated suspension line structure of the present invention is embedded in the protrusion of the side wall of the suspended main circuit inside the middle layer, thereby achieving fixation with the metal structure. The other end of the support structure clamps the main circuit of the middle layer through the clip to achieve support for the suspended main circuit.

[0022] The present invention's metal-integrated suspension platform can be manufactured using CNC (Computer Numerical Control) machining technology, resulting in high precision. The integrated multi-layer metal structure also allows for flexible processing and assembly. The electromagnetic field of this structure is primarily distributed within the cavity within the package, resulting in self-encapsulation and low-loss properties. The enclosed structure significantly reduces electromagnetic energy leakage, significantly reducing losses within the structure and improving various performance aspects of microwave circuits. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1It is a schematic diagram of an expanded metal integrated suspension line structure circuit including a support structure provided by an embodiment of the present invention;

[0024] Figure 2 A schematic diagram of a metal integrated suspension line support structure provided by an embodiment of the present invention;

[0025] Figure 3 A three-dimensional view of a metal integrated suspension line support structure provided by an embodiment of the present invention;

[0026] Figure 4 The figure is a schematic diagram of S-parameter simulation of a filter with a metal integrated suspension line structure before and after adding the support structure proposed in the embodiment of the present invention. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] The purpose of this application is to propose a supporting technology for a metal integrated suspension line structure in order to achieve the stability of the suspension and high precision of the manufacturing of the metal integrated suspension line structure, increase the flexibility of circuit design and the reliability in practical applications.

[0029] In the exemplary embodiments of the present application, the supporting technology of the metal integrated suspension line structure of the present invention adopts materials with good insulation, low dielectric constant, good thermal stability and mechanical properties, and corrosion resistance to construct the supporting structure of the metal integrated suspension line microwave circuit. It can provide stable mechanical support for the middle suspension main circuit and has little effect on the performance of the circuit, thereby greatly improving the flexibility of the design of the metal integrated suspension line structure microwave circuit.

[0030] like Figure 1 The figure is a schematic diagram of a metal integrated suspension line structure circuit including a metal integrated suspension line support structure 100. The metal integrated suspension line structure is composed of a multi-layer metal structure. The structure in the figure is a nine-layer metal integrated suspension line structure. Figure 1 As shown, the flower kiss is on top. The first layer M1 and the ninth layer M9 are metal cover plates. The second layer M2, the fourth layer M4, the sixth layer M6, and the eighth layer M8 are hollowed out to form a cavity structure. The middle layers M3, M5, and M7 are the main circuit structures. The sidewall protrusions 11 of the middle layers M3, M5, and M7 serve as fixed supports for the clip-shaped metal integrated suspension line support structure 100.

[0031] The multi-layer metal of the metal integrated suspension line structure implemented in this application is assembled to form a closed self-encapsulated structure. The metal material can be aluminum, copper, stainless steel and other materials, and is processed using CNC machine tool machining technology. Screw holes 10 are punched at the edge of the structure and the overall structure is assembled using screws.

[0032] like Figure 2 This is a schematic diagram of the metal integrated suspension wire support structure proposed in the present invention. The metal integrated suspension wire support structure is fixed by embedding the side wall protrusion 11, and the other end is clamped on one side of the suspension main circuit 13 by a clip-like structure to achieve support and fixation of the suspension main circuit 13, thereby improving the mechanical stability of the overall structure.

[0033] like Figure 3 As shown, the support structure has a first side portion and a second side portion, the first side portion is opposite to the second side portion, the first side portion has at least one recessed portion 101 for engaging with the side wall protrusion of the metal integrated suspension line structure for fixation, and the second side portion is formed with at least one U-shaped clamping support portion 102 for clamping the suspension circuit of the middle layer of the metal integrated suspension line for support and fixation.

[0034] like Figure 3 This is a three-dimensional view of the metal integrated suspension line support structure. The structure is generally constructed of materials with good insulation, low dielectric constant, good thermal stability and mechanical properties, and corrosion resistance (such as polytetrafluoroethylene (PTFE), polyethylene (PE), fluorinated ethylene propylene copolymer (FEP), etc.). One side is recessed and embedded in the sidewall protrusion of the metal integrated suspension line structure for fixation, and the clip-like structure on the other side can support the suspension circuit.

[0035]

[0036] like Figure 4 The figure shows the S parameter simulation of a filter with a metal integrated suspension line structure before and after the support structure proposed in the present invention is added. The fractional bandwidth of the filter is 41.5%. For this example, the S parameter response changes slightly before and after the support technology of the metal integrated suspension line structure is applied. The S 21 The change is less than 0.1dB, S 11 The change is less than 0.6dB, indicating that this support technology has minimal impact on metal-integrated suspension microwave circuits while achieving its supporting function. Furthermore, this support technology is not limited to filters with metal-integrated suspension structures but can also be used for other types of microwave circuits that employ metal-integrated suspension structures.

[0037] The basic principles, main features and advantages of the present invention are shown and described above. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention.

[0038] The embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being defined by the appended claims rather than the foregoing description, and all changes that come within the meaning and range of equivalents of the claims are therefore intended to be embraced therein.

[0039] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A support structure for a metal integrated suspension line structure, characterized in that: It is made of insulating material, and the dielectric constant, thermal stability, mechanical properties and corrosion resistance of the insulating material meet the preset requirements; it has a first side and a second side, the first side is opposite to the second side, the first side has at least one recessed portion, which is used to engage with the side wall protrusion of the metal integrated suspension line structure for fixation, and the second side is formed with at least one U-shaped clamping support portion, which is used to clamp the suspension circuit of the middle layer of the metal integrated suspension line for support and fixation.

2. The support structure of the metal integrated suspension line structure according to claim 1, characterized in that: The concave portion is a groove formed by inward depression of the surface of the first side portion, and the shape of the groove is adapted to the shape of the protrusion on the side wall.

3. The support structure of the metal integrated suspension line structure according to claim 1, characterized in that: The opening width of the clamping support portion is adapted to the thickness of the suspension circuit.

4. The support structure of the metal integrated suspension line structure according to claim 1, characterized in that: The insulating material is made of polymer material.

5. The supporting structure of the metal integrated suspension line structure according to claim 1, characterized in that: The insulating material includes one of polytetrafluoroethylene, polyethylene, and fluorinated ethylene propylene copolymer.

6. A metal integrated suspension line structure, which is a closed self-encapsulated structure formed by stacking multiple metal plates from top to bottom, wherein the internal middle layer includes at least one suspension circuit, characterized in that: A support structure of the metal integrated suspension line structure according to any one of claims 1 to 5 is arranged between the suspension circuit and the inner side wall of the metal plate of the layer where it is located, and the suspension circuit and the metal plate of the layer where it is located are supported and fixed by using the support structure of the metal integrated suspension line structure.

7. The metal integrated suspension line structure according to claim 6, characterized in that: The inner sidewall of the metal plate of the suspension circuit and the layer where it is located is preset with at least one sidewall protrusion that matches the concave portion of the support structure of the metal integrated suspension line structure.

8. The metal integrated suspension line structure according to claim 7, characterized in that: The side wall protrusion and the metal plate of the layer where it is located are formed as an integral structure.

9. The metal integrated suspension line structure according to claim 6, characterized in that: The suspension circuit includes a microwave circuit.

10. The metal integrated suspension line structure according to claim 6, characterized in that: Screw holes are punched on the edges of the metal plate structure and the whole structure is assembled by screws.

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