A shielded filter based on an integrated stripline resonator

Abstract

This utility model discloses a shielded filter based on an integrated stripline resonator, belonging to the field of filter technology. It includes a resonator body with an RF connection line connected to it for signal input and output. Two resonator bodies are connected by a connecting post. A cavity houses both resonator bodies, shielding them. A mounting block is externally connected to the cavity, featuring through holes and a conformal curved surface for mounting the RF connection line. This shielded filter, through the cooperation of the resonator body and the cavity, forms a filter with a shielded cavity. This structure achieves filtering, and the integrated stripline design makes the filter easy to assemble, highly accurate, and ensures phase consistency.

Description

Technical Field

[0001] This utility model belongs to the field of filter technology, and in particular relates to a shielded filter based on an integrated stripline resonator. Background Technology

[0002] In the field of filters, traditional filter structures have many shortcomings: on the one hand, the matching precision between the resonator and the cavity is insufficient, and the assembly is difficult, resulting in poor phase consistency after the filter is assembled, which affects the stability of signal transmission; on the other hand, the current grounding method of the resonator has low reliability and is prone to intermodulation distortion, which reduces the performance of the product; in addition, some filter structures lack effective electromagnetic shielding design, making them susceptible to external electromagnetic interference, and also generating electromagnetic radiation to external circuits, further affecting the filtering effect and system compatibility. Utility Model Content

[0003] This invention overcomes the shortcomings of the prior art by providing a shielded filter based on an integrated stripline resonator to solve the problems existing in the prior art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a shielded filter based on an integrated stripline resonator, comprising... The resonator body is equipped with a radio frequency connection line for signal input and output. There are two resonator bodies connected by a connecting post. The cavity contains both resonator bodies, which are shielded and installed within it. An external mounting block is provided on the cavity, with wire-passing holes and a conforming curved surface for mounting the radio frequency connection cable.

[0005] In a preferred embodiment of the present invention, the resonator body includes a resonant bracket and a resonant substrate. The end of the resonant bracket is provided with a plurality of protrusions to install the resonant bracket in the cavity. The resonant substrate is installed on the resonant bracket by a plurality of bolts.

[0006] In a preferred embodiment of this utility model, the resonant bracket is provided with pins to ground the resonator body.

[0007] In a preferred embodiment of the present invention, a slot is provided in the cavity, and the protrusion is located in the slot to movably install the resonant bracket in the cavity.

[0008] In a preferred embodiment of this utility model, the cavity end is provided with a mounting hole for mounting the cavity.

[0009] In a preferred embodiment of this utility model, a fixing plate is provided at the end of the cavity, and a protrusion is provided on the fixing plate. The protrusion cooperates with the mounting block to install the radio frequency connection cable.

[0010] In a preferred embodiment of this utility model, the fixing plate is a C-shaped structural plate, and the protrusion is provided with a C-shaped curved surface.

[0011] This utility model solves the defects existing in the background technology, and has the following beneficial effects: The shielded filter of this invention forms a filter with a shielded cavity through the cooperation of the resonator body and the cavity. Filtering is achieved through this structure. At the same time, the integrated stripline design makes the filter easy to assemble and highly accurate, ensuring the phase consistency of the filter. Furthermore, the presence of pins increases the reliability of the filter's electrical connection, thereby improving the intermodulation reliability of the filter. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of the present utility model; Figure 2 for Figure 1 Enlarged view of section A in the middle; Figure 3 This is a schematic diagram of the resonator body according to a preferred embodiment of the present invention; Figure 4 This is a schematic diagram of the cavity structure in a preferred embodiment of the present invention; In the figure: 10, resonator body; 101, resonator bracket; 102, resonator substrate; 11, RF connection cable; 20, cavity; 201, slot; 202, mounting hole; 21, mounting block; 211, wire through hole; 212, mating surface; 30, protrusion; 40, pin; 50, fixing plate; 51, protrusion; 511, C-shaped surface. Detailed Implementation

[0013] The following drawings will disclose several embodiments of this utility model. For clarity, many physical details will be described in the following description. However, it should be understood that these physical details should not be used to limit this utility model. That is, in some embodiments of this utility model, these physical details are not essential. In addition, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0014] Furthermore, in this utility model, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the utility model. They are merely used to distinguish components or operations described with the same technical terms and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0015] This embodiment provides a shielded filter based on an integrated stripline resonator. The shielded filter forms a filter with a shielded cavity through the cooperation of the resonator body 10 and the cavity 20. Filtering is achieved through this structure. At the same time, the integrated stripline design makes the filter easy to assemble and has high precision. It can ensure the phase consistency of the filter, and the presence of pin 40 can increase the reliability of the filter's electrical connection, thereby improving the intermodulation reliability of the filter.

[0016] Combination Figures 1 to 4 As shown, the shielded filter of this embodiment includes a resonator body 10 and a cavity 20. In this embodiment, there are two resonator bodies 10, which are installed in a shielded manner inside the cavity 20. The two resonator bodies 10 are connected and installed by connecting posts, and the two resonator bodies 10 are detachably installed inside the cavity 20.

[0017] In this embodiment, the resonator body 10 includes a resonator bracket 101 and a resonator substrate 102. The resonator bracket 101 has several protrusions 30 at its end to install the resonator bracket 101 into the cavity 20. The resonator substrate 102 is installed on the resonator bracket 101 by several bolts, thereby fixing the resonator substrate 102 and the resonator bracket 101 together. The cavity 20 has a slot 201, and the protrusions 30 are located in the slot 201 to movably install the resonator bracket 101 into the cavity 20. Under the cooperation of the protrusions 30 and the slot 201, a linear guiding structure is formed, so the resonator body 10 can be stably installed into the cavity 20, and the resonator body 10 can be easily removed from the cavity 20, making its assembly more convenient.

[0018] Combination Figure 1 and Figure 3As shown, in this embodiment, an RF connection line 11 is connected to the resonator body 10 for signal input and output. There are two resonator bodies 10 connected by a connecting post. In this embodiment, the RF connection line 11 is installed and connected to the resonant substrate 102. The resonant bracket 101 is provided with a pin 40 to ground the resonator body 10. The resonator grounding function is realized through the pin 40, which improves the intermodulation reliability of the filter.

[0019] Combination Figure 1 and Figure 4 As shown, in this embodiment, both resonator bodies 10 are located inside the cavity 20. The cavity 20 shields and installs the two resonator bodies 10. A mounting block 21 is provided on the outside of the cavity 20. The mounting block 21 is provided with a wire through hole 211 and a mating surface 212 to install the radio frequency connection line 11. In this embodiment, the radio frequency connection line 11 extends out from the wire through hole 211 and is mated and installed in the mating surface 212 of the mounting block 21, which realizes the stable installation of the radio frequency connection line 11 for subsequent use of the filter.

[0020] In this embodiment, the cavity 20 is provided with a mounting hole 202 at its end to install the cavity 20. The mounting hole 202 enables the filter to be installed as a whole.

[0021] Furthermore, in this embodiment, a fixing plate 50 is provided at the end of the cavity 20. The fixing plate 50 is provided with a protrusion 51. The protrusion 51 cooperates with the mounting block 21 to install the radio frequency connection cable 11. The fixing plate 50 is a C-shaped structure plate. The protrusion 51 is provided with a C-shaped curved surface 511. The presence of the protrusion 51 on the fixing plate 50 allows it to cooperate with the mounting block 21 to position and install the radio frequency connection cable 11, thereby improving the installation stability of the radio frequency connection cable 11.

[0022] In this embodiment, the shielded filter forms a filter with a shielded cavity through the cooperation of the resonator body 10 and the cavity 20. Filtering is achieved through this structure. At the same time, the integrated stripline design makes the filter easy to assemble and highly accurate, ensuring the phase consistency of the filter. Furthermore, the presence of pin 40 increases the reliability of the filter's electrical connection, thereby improving the intermodulation reliability of the filter.

[0023] While the present invention has been described above with reference to various embodiments, it should be understood that many changes and modifications can be made without departing from the scope of the present invention. That is, the methods, systems, or devices discussed above are merely examples. Various configurations can be appropriately omitted, substituted, or added to various processes or components. For example, in alternative configurations, methods can be performed in a different order than described, and / or various stages can be added, omitted, and / or combined. Moreover, features described with respect to certain configurations can be combined in various other configurations. Different aspects and elements of the configuration can be combined in a similar manner. Furthermore, as technology develops, many elements are merely examples and do not limit the scope of this disclosure or the claims.

[0024] Specific details are provided in the specification to offer a thorough understanding of exemplary configurations, including implementations. However, configurations can be practiced without these specific details; for example, well-known circuits, processes, algorithms, structures, and techniques have been shown without unnecessary detail to avoid obscuring the configuration. This description provides only exemplary configurations and does not limit the scope, applicability, or configuration of the claims. Rather, the foregoing description of the configurations will provide those skilled in the art with an enabling description for implementing the described techniques. Various changes can be made to the function and arrangement of the elements without departing from the spirit or scope of this disclosure.

[0025] Furthermore, although each operation can be described as a sequential process, many operations can be executed in parallel or simultaneously. Additionally, the order of operations can be rearranged. A process may have additional steps. Moreover, examples of methods can be implemented using hardware, software, firmware, middleware, code, hardware description languages, or any combination thereof. When implemented in software, firmware, middleware, or code, the program code or code segments used to perform the necessary tasks can be stored in a non-transitory computer-readable medium such as a storage medium and executed by a processor.

[0026] In summary, the above detailed description is intended to be exemplary rather than limiting, and it should be understood that the claims (including all equivalents) are intended to define the spirit and scope of this invention. These embodiments should be understood as illustrative only and not as limiting the scope of protection of this invention. After reading the description of this invention, those skilled in the art can make various alterations or modifications to it, and these equivalent changes and modifications also fall within the scope defined by the claims of this invention.

Claims

1. A shielded filter based on an integrated stripline resonator, characterized in that, include A resonator body (10) is provided with a radio frequency connection line (11) for signal input and output. There are two resonator bodies (10) connected by a connecting post. The cavity (20) contains two resonator bodies (10), which are shielded and installed within the cavity (20). An installation block (21) is provided on the outside of the cavity (20). The installation block (21) has a wire hole (211) and a fitting curved surface (212) to install the radio frequency connection line (11).

2. A shielded filter based on an integrated stripline resonator according to claim 1, characterized in that, The resonator body (10) includes a resonator bracket (101) and a resonator substrate (102). The resonator bracket (101) has several protrusions (30) at its end to install the resonator bracket (101) in the cavity (20). The resonator substrate (102) is installed on the resonator bracket (101) by several bolts.

3. A shielded filter based on an integrated stripline resonator according to claim 2, characterized in that, The resonant support (101) is provided with pins (40) to ground the resonator body (10).

4. A shielded filter based on an integrated stripline resonator according to claim 2, characterized in that, The cavity (20) is provided with a slot (201), and the protrusion (30) is located in the slot (201) to movably install the resonant bracket (101) in the cavity (20).

5. A shielded filter based on an integrated stripline resonator according to claim 1, characterized in that, The cavity (20) is provided with a mounting hole (202) at its end for mounting the cavity (20).

6. A shielded filter based on an integrated stripline resonator according to claim 1, characterized in that, A fixing plate (50) is provided at the end of the cavity (20), and a protrusion (51) is provided on the fixing plate (50). The protrusion (51) cooperates with the mounting block (21) to install the radio frequency connection line (11).

7. A shielded filter based on an integrated stripline resonator according to claim 6, characterized in that, The fixing plate (50) is a C-shaped structural plate, and the protrusion (51) is provided with a C-shaped curved surface (511).

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