High-isolation packaging tube shell structure

Abstract

The utility model discloses a high-isolation packaging tube shell structure which comprises a tube shell substrate, a tube shell surrounding frame is arranged at the upper end of the tube shell substrate, a tube shell cover plate is arranged at the upper end of the tube shell surrounding frame, the tube shell substrate is of a rectangular plate-shaped structure, strip-shaped protrusions are arranged on the edge of the tube shell substrate, and the inner layout of the tube shell substrate is strip line transmission layout. The tube shell fence is rectangular partition plates which are vertically arranged on the upper surface of the tube shell substrate, the rectangular partition plates are mutually closed, and a plurality of rounded rectangles are formed in the rectangular partition plates, high-isolation transmission of radio-frequency signals in an extremely small space is achieved through physical cavity separation, and the technical problem that the isolation degree is poor in the SIP integration process is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of multi-chip packaging, in particular to a high-isolation packaging tube shell structure. Background Art

[0002] With the rapid and vigorous development of the microelectronics information industry, people have higher and higher demands on communications, radar, personal electronic consumption and other fields. They are eager to make products smaller, more powerful and with lower power consumption. However, traditional design solutions are difficult to meet these demands. Under this severe situation, my country's microelectronics industry and high-density integrated circuit packaging technology are directly promoted to develop faster and faster.

[0003] With the continuous development and improvement of microelectronics technology, people have proposed to integrate multi-chip packages with different functions in the same cavity, which greatly increases the density of the overall device arrangement, effectively reduces the internal interconnection loss and the complexity of the input and output interfaces, reduces the product volume, and enriches the product functions. However, as the integration becomes higher and higher, the isolation between signals becomes worse and worse, and the crosstalk and intermodulation spurs between signals will increase. Therefore, it is urgent to solve the problem of poor isolation between signals after high integration. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a high-isolation package tube shell structure to solve the problem in the prior art that the isolation between signals is getting worse as the integration becomes higher.

[0005] A high-isolation package tube shell structure comprises a tube shell substrate, a tube shell surrounding frame is arranged on the upper end of the tube shell substrate, and a tube shell cover plate is arranged on the upper end of the tube shell surrounding frame.

[0006] Furthermore, the tube shell substrate is a rectangular plate structure, and a strip-shaped protrusion is arranged at the edge of the tube shell substrate.

[0007] Furthermore, the internal layout of the tube shell substrate is a stripline transmission layout.

[0008] Furthermore, the tube shell fence is a rectangular partition vertically arranged on the upper surface of the tube shell substrate, and the rectangular partitions are closed to each other to form a plurality of rounded rectangles inside.

[0009] Furthermore, the tube shell cover plate is a rectangular flat plate structure, and its structure size corresponds to the size of the tube shell base plate.

[0010] Furthermore, a plurality of flat plate protrusions are arranged on the lower surface of the tube shell cover plate, and the size, shape and position relationship of the flat plate protrusions correspond to the rounded rectangle formed by the tube shell fence.

[0011] Beneficial effects of the utility model: The present application realizes high-isolation transmission of radio frequency signals in a very small space through physical cavity isolation, and solves the technical problem of poor isolation in the SIP integration process. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of a high isolation package shell and tube structure;

[0013] Figure 2 It is a side view of a shell and substrate of a high isolation package shell and tube structure;

[0014] Figure 3 It is a schematic diagram of the shell and cover structure of a high-isolation package shell and tube structure;

[0015] Figure 4 The figure is a side view of a tube shell cover plate of a high isolation package tube shell structure.

[0016] In the figure: 1-tube shell substrate, 2-tube shell surrounding frame, 3-tube shell cover plate. DETAILED DESCRIPTION

[0017] The following is an explanation of the implementation of the present invention by specific specific embodiments, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this utility model are limited to the implementation. On the contrary, the purpose of introducing the utility model in conjunction with the implementation is to cover other options or modifications that may be extended based on the claims of the present utility model. In order to provide a deep understanding of the present utility model, many specific details will be included in the following description. The present utility model can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present utility model, some specific details will be omitted in the description. It should be noted that, in the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. It should be noted that in this specification, similar reference numerals and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further defined and explained in the subsequent figures.

[0018] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not indicate quantity restrictions, but indicate the existence of at least one. Words such as "set", "connected", "connected" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two components. For ordinary technicians in this field, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances. The directions or positional relationships indicated by “upper”, “lower”, “left”, “right”, “inner”, “bottom”, etc. are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the utility model.

[0019] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0020] In this embodiment, as shown in the attached Figure 1-4 As shown, a high isolation package tube shell structure comprises a tube shell substrate 1, a tube shell surrounding frame 2 is arranged on the upper end of the tube shell substrate 1, and a tube shell cover plate 3 is arranged on the upper end of the tube shell surrounding frame 1.

[0021] Furthermore, the tube shell substrate 1 is a rectangular plate structure, and a strip-shaped protrusion is arranged at the edge of the tube shell substrate 1 .

[0022] Furthermore, the internal layout of the tube shell substrate 1 is a stripline transmission layout.

[0023] Furthermore, the tube shell fence 2 is a rectangular partition vertically arranged on the upper surface of the tube shell substrate 1, and the rectangular partitions are closed to each other, forming a plurality of rounded rectangles inside.

[0024] Furthermore, the tube shell cover plate 3 is a rectangular flat plate structure, and its structure size corresponds to the size of the tube shell base plate 1 .

[0025] Furthermore, a plurality of flat plate protrusions are provided on the lower surface of the tube shell cover plate 3 , and the size, shape and position relationship of the flat plate protrusions correspond to the rounded rectangle formed by the tube shell fence 2 .

[0026] Among them, the shell enclosure 2 and the shell cover 3 are mainly used to physically isolate the integrated chip inside the shell according to the functional area (such as mixing circuit, amplifier circuit, digital control attenuation circuit, digital control circuit, power conversion circuit, etc.) to achieve high isolation in the signal transmission process and suppress stray signals and intermodulation signals; if the shell enclosure 2 is not physically isolated, the isolation of the signal transmission process is generally only about 40dB, which has a great impact on the mixing circuit and the amplifier circuit; the mixing circuit has poor isolation, resulting in signal leakage, and the consequence is that there are more stray signals and intermodulation signals in the useful signal after mixing, and the spectrum purity is poor, which makes the back-end circuit unusable; if the gain of the amplifier circuit is too large and the spatial isolation is not good, it will cause serious spatial crosstalk, resulting in amplifier self-excitation, circuit instability, possible signal distortion, and in severe cases, self-excitation signals will burn the circuit, so the circuit isolation protection should be done well. After the enclosure cavity isolation design and cover design, the isolation can reach more than 80dB.

[0027] Beneficial effects of the utility model: The present application realizes high-isolation transmission of radio frequency signals in a very small space through physical cavity isolation, and solves the technical problem of poor isolation in the SIP integration process.

[0028] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A high isolation package tube shell structure, characterized in that: It comprises a tube shell substrate (1), a tube shell surrounding frame (2) is arranged at the upper end of the tube shell substrate (1), and a tube shell cover plate (3) is arranged at the upper end of the tube shell surrounding frame (2).

2. The high isolation package tube shell structure according to claim 1, characterized in that: The tube shell substrate (1) is a rectangular plate-shaped structure, and a strip-shaped protrusion is provided at the edge of the tube shell substrate (1).

3. The high isolation package tube shell structure according to claim 1, characterized in that: The internal layout of the tube shell substrate (1) is a stripline transmission layout.

4. The high isolation package tube shell structure according to claim 1, characterized in that: The tube shell surrounding frame (2) is a rectangular partition vertically arranged on the upper surface of the tube shell substrate (1); the rectangular partitions are mutually closed, and a plurality of rounded rectangles are formed inside.

5. The high isolation package tube shell structure according to claim 1, characterized in that: The tube shell cover plate (3) is a rectangular flat plate structure, and its structure size corresponds to the size of the tube shell base plate (1).

6. The high isolation package tube shell structure according to claim 5, characterized in that: The lower surface of the tube shell cover plate (3) is provided with a plurality of flat plate protrusions, and the size, shape and position relationship of the flat plate protrusions correspond to the rounded rectangle formed by the tube shell surrounding frame (2).

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