Multi-channel broadband high-isolation low-insertion-loss double-frequency absorption type radio frequency switch

Abstract

The utility model discloses a multi-channel broadband high-isolation low-insertion-loss double-frequency absorption type radio frequency switch, which is characterized in that the radio frequency switch comprises a shell, a printed board, a feed control board, a power interface, an input interface and an output interface, the printed board and the feed control board are arranged in the shell, the input interface and the power interface are arranged on a front panel, the four output interfaces are distributed on the radio frequency switch at a certain angle, the shell is provided with a through hole, and the through hole is formed in the edge of the shell. According to the utility model, the problems of low bandwidth, low isolation, high insertion loss, long switching time and low integration level of the existing switch are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of radio frequency switches, in particular to a multi-channel broadband high-isolation low-insertion-loss dual-frequency absorptive radio frequency switch. Background Art

[0002] RF switches are electronic components used to switch signals in the RF signal transmission path. They can quickly switch signals between different channels, thereby selecting between receiving and transmitting, different frequency bands, and different antennas.

[0003] In modern wireless communication systems, the performance requirements for RF switches are increasing. There are similar products on the market, but they often fail to meet the industry's growing performance requirements in terms of indicators. Especially in dual-band, there is a higher demand for module isolation. Existing RF switches have problems such as insufficient bandwidth or low isolation. In order to meet the indicators, they are usually combined into modules of different frequency bands, resulting in a larger overall component, occupying a large space, and increasing costs.

[0004] Therefore, it is necessary to provide a multi-channel broadband high isolation low insertion loss dual-frequency absorptive RF switch to solve the above technical problems. The utility model optimizes the design of the matching network so that the module can achieve good matching in both microwave and millimeter wave frequency bands, significantly improves the response speed and isolation of the system, reduces insertion loss, improves integration and saves costs in situations where microwave and millimeter wave switches are required to be used simultaneously. Summary of the invention

[0005] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the title of the invention of this application to avoid blurring the purpose of this section, the abstract of the specification and the title of the invention, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0006] Therefore, the utility model aims to solve the problem that the working efficiency of the radio frequency switch is low.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: a multi-channel broadband high-isolation low-insertion-loss dual-frequency absorptive RF switch, characterized in that the RF switch comprises a shell, a printed circuit board, a feed control board, a power interface, an input interface and an output interface; the printed circuit board and the feed control board are arranged and installed inside the shell, the input interface and the power interface are arranged and installed on the front panel, the four output interfaces are distributed on the RF switch at a certain angle, and the shell is provided with a through hole, and the through hole is at the edge of the shell.

[0008] As a preferred embodiment of the multi-channel broadband high-isolation low-insertion-loss dual-frequency absorptive RF switch of the utility model, the output interfaces are set to four and are angularly distributed in four directions of the RF switch.

[0009] As a preferred embodiment of the multi-channel broadband high-isolation low-insertion-loss dual-frequency absorptive RF switch of the utility model, three through holes are arranged and distributed in a triangular shape at the edge of the shell to play a positioning role.

[0010] As a preferred embodiment of the multi-channel broadband high-isolation low-insertion-loss dual-frequency absorptive RF switch described in the utility model, the RF switch also includes a single-pole switching component, a four-throw output port component, a broadband matching network component, a capacitor and an inductor; the single-pole switching component includes a single-pole single-throw switch chip, a single-pole multi-throw absorptive switch, a single-pole single-throw signal control chip and a single-pole four-throw switch chip, and a plurality of the capacitors and the inductors are provided.

[0011] As a preferred embodiment of the multi-channel broadband high-isolation low-insertion-loss dual-frequency absorptive RF switch described in the utility model, one end of the first capacitor is connected to the input interface as the input end IN of the single-pole multi-throw absorptive switch, and the other end of the first capacitor is respectively connected to the first inductor and the input end of the single-pole four-throw switch chip.

[0012] As a preferred embodiment of the multi-channel broadband high-isolation low-insertion-loss dual-frequency absorptive RF switch of the utility model, the other end of the first inductor is connected to the second capacitor, and the gold wire of the second capacitor is grounded.

[0013] As a preferred embodiment of the multi-channel broadband high-isolation low-insertion-loss dual-frequency absorptive RF switch described in the utility model, the second inductor is connected to the third capacitor, and the third capacitor is connected to the feed board; the other end of the fourth capacitor is connected to the third inductor and the single-pole single-throw signal control chip 11.

[0014] As a preferred embodiment of the multi-channel broadband high-isolation low-insertion-loss dual-frequency absorptive RF switch described in the utility model, the third inductor is connected to the fifth capacitor, the other end of the fifth capacitor is connected to the control end of the single-pole single-throw signal control chip to form a loop, and the loop is connected to the feed board.

[0015] As a preferred embodiment of the multi-channel broadband high-isolation low-insertion-loss dual-frequency absorptive RF switch of the utility model, the fourth inductor is connected to the sixth capacitor, and the other end of the sixth capacitor is connected to the ground with a gold wire.

[0016] As a preferred embodiment of the multi-channel broadband high-isolation low-insertion-loss dual-frequency absorptive RF switch of the utility model, the single-pole multi-throw absorptive switch adopts a circular structure design, and the length of each output branch line is consistent.

[0017] The beneficial effects of the utility model are as follows: 1. The single-pole switching component of the utility model adopts a circular structure design in the structural layout, and the length of each branch line is consistent, thereby achieving high amplitude and phase consistency; 2. High-performance DC-isolating capacitors are adopted to provide good isolation; 3. The utility model adopts an optimized matching network design in circuit design, so that the module can achieve good matching in both microwave and millimeter wave frequency bands, thereby ensuring high-bandwidth performance.

[0018] The utility model optimizes the design of the matching network so that the module can achieve good matching in both microwave and millimeter wave frequency bands. The module adopts a specially designed circuit structure combined with high-performance absorption materials to achieve high bandwidth and high isolation performance, while being compatible with microwave and millimeter wave frequency bands, significantly improving the response speed and isolation of the system, reducing insertion loss, and improving integration and saving costs in situations where microwave and millimeter wave switches need to be used simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0020] Figure 1 The utility model provides an internal schematic diagram of a multi-channel broadband high-isolation low-insertion-loss dual-frequency absorptive RF switch according to an embodiment. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0023] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general proportion, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0024] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0025] Example 1

[0026] Reference Figure 1 , the first embodiment of the utility model, a multi-channel broadband high isolation low insertion loss dual-frequency absorption type RF switch, characterized in that the RF switch includes a shell, a printed circuit board, a feed control board, a power interface, an input interface and an output interface; the printed circuit board and the feed control board are arranged and installed inside the shell, the input interface and the power interface are arranged and installed on the front panel, the four output interfaces are distributed on the RF switch at a certain angle, and the shell is provided with a through hole, and the through hole is at the edge of the shell. Specifically, the module adopts a specially designed circuit structure, combined with high-performance absorption materials, to achieve high bandwidth and high isolation performance, while being compatible with microwave and millimeter wave frequency bands. It includes: a shell, a printed circuit board, a feed control board, a power interface, an input interface and an output interface; the printed circuit board and the feed board are arranged inside the shell, the input interface and the power interface are arranged on the front panel, the four output interfaces are distributed in four directions at a certain angle, and the three installation positioning holes are distributed in a triangular shape around the module.

[0027] Among them, starting from the input interface, capacitor 1 is connected, one end of the first capacitor 1 is connected to the input interface as the input end IN end of the single-pole multi-throw absorption switch, and the other end of the first capacitor 1 is respectively connected to the input end of the first inductor 2 and the single-pole four-throw switch chip 4. The other end of the first inductor 2 is connected to the 100pf second capacitor 3, and the 100pf second capacitor 3 is connected to the ground with a gold wire. To ensure consistency, the four output ends are of equal length. Taking one path as an example, starting from the single-pole four-throw switch chip 4out1, a single-pole single-throw switch chip 5 is connected, and the other end is connected to the second inductor 7 and the fourth capacitor 8. The second inductor 7 is connected to the 100pf third capacitor 6, and the 100pf third capacitor 6 is connected to the feed board. The other end of the fourth capacitor 8 is connected to the third inductor 9 and the single-pole single-throw signal control chip 11. The third inductor 9 is connected to the fifth capacitor 10, and the other end of the fifth capacitor 10 is connected to the control end of the single-pole single-throw signal control chip 11 to form a loop, which is connected to the feed board. At the same time, it is connected to the 100pf seventh capacitor 15, and the other end of the 100pf seventh capacitor 15 is not connected. The single-pole single-throw signal control chip 11 is connected to the eighth capacitor 14 and the fourth inductor 12. The fourth inductor 12 is connected to the 100pf sixth capacitor 13, and the other end of the 100pf sixth capacitor 13 is connected to the ground with a gold wire. The fourth inductor 12 is connected to the eighth capacitor 14, and the other end of the eighth capacitor 14 is connected to the output interface. The remaining three output branches are the same as the example.

[0028] Single-pole switching: used to realize signal switching function, with fast response and stable performance.

[0029] Four-throw output port: used to transmit signals to different communication channels. It uses special absorption materials to effectively absorb and reduce signal interference between different channels. Each port is equipped with a high-performance DC-blocking capacitor to ensure high isolation of the module.

[0030] Broadband matching network: By optimizing the design of the matching network, the module can achieve good matching in both microwave and millimeter wave frequency bands, thus ensuring high-bandwidth performance.

[0031] In summary, the multi-channel broadband high-isolation low-insertion-loss dual-frequency absorptive RF switch of the utility model can significantly improve the response speed and isolation of the system, reduce insertion loss, widen the frequency band, and improve communication quality while ensuring signal transmission efficiency, thereby solving the problems of low bandwidth, low isolation, high insertion loss, long switching time, and low integration of existing switches.

[0032] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and ratio of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present utility model. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to a specific embodiment, but extends to various modifications that still fall within the scope of the appended claims.

[0033] Additionally, in order to provide a concise description of example embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0034] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0035] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A multi-channel broadband high isolation low insertion loss dual-frequency absorptive RF switch, characterized in that: The RF switch includes a shell, a printed circuit board, a feed control board, a power interface, an input interface and an output interface; the printed circuit board and the feed control board are arranged and installed inside the shell, the input interface and the power interface are arranged and installed on the front panel, the output interface is a plurality of interfaces distributed on the RF switch at a certain angle, and the shell is provided with a through hole, and the through hole is at the edge of the shell.

2. According to claim 1, the multi-channel broadband high isolation low insertion loss dual-frequency absorptive RF switch is characterized in that: The output interfaces are set to four and are distributed at four angles in four directions of the radio frequency switch.

3. According to claim 1, the multi-channel broadband high isolation low insertion loss dual-frequency absorptive RF switch is characterized in that: The through holes are arranged in three and distributed in a triangular shape at the edge of the shell to play a positioning role.

4. According to claim 1, the multi-channel broadband high isolation low insertion loss dual-frequency absorptive RF switch is characterized in that: The radio frequency switch also includes a single-pole switching component, a four-throw output port component, a broadband matching network component, a capacitor and an inductor; the single-pole switching component includes a single-pole single-throw switch chip, a single-pole multi-throw absorption switch, a single-pole single-throw signal control chip and a single-pole four-throw switch chip, and a plurality of the capacitors and the inductors are provided.

5. According to claim 4, the multi-channel broadband high isolation low insertion loss dual-frequency absorptive RF switch is characterized in that: One end of the first capacitor (1) is connected to the input interface as the input end IN of the single-pole multi-throw absorptive switch, and the other end of the first capacitor (1) is respectively connected to the input end of the first inductor (2) and the single-pole four-throw switch chip (4).

6. The multi-channel broadband high isolation low insertion loss dual-frequency absorptive RF switch according to claim 4, characterized in that: The other end of the first inductor (2) is connected to the second capacitor (3), and the second capacitor (3) is grounded by a gold wire.

7. The multi-channel broadband high isolation low insertion loss dual-frequency absorptive RF switch according to claim 4, characterized in that: The second inductor (7) is connected to the third capacitor (6), and the third capacitor (6) is connected to the feed board; the other end of the fourth capacitor (8) is connected to the third inductor (9) and the single-pole single-throw signal control chip (11).

8. The multi-channel broadband high isolation low insertion loss dual-frequency absorptive RF switch according to claim 4, characterized in that: The third inductor (9) is connected to the fifth capacitor (10), and the other end of the fifth capacitor (10) is connected to the control end of the single-pole single-throw signal control chip (11) to form a loop, which is connected to the feed board.

9. The multi-channel broadband high isolation low insertion loss dual-frequency absorptive RF switch according to claim 4, characterized in that: The fourth inductor (12) is connected to the sixth capacitor (13), and the other end of the sixth capacitor (13) is connected to the ground by a gold wire.

10. The multi-channel broadband high isolation low insertion loss dual-frequency absorptive RF switch according to claim 4, characterized in that: The single-pole multi-throw absorptive switch adopts a circular structure design, and the length of each output branch line is consistent.

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