Dual-mode resonator and filter based on FBAR

Abstract

The utility model discloses a dual-mode resonator and filter based on FBAR, which comprises a resonator body and a base, the resonator body is installed at the right end of the top of the base, the resonator body comprises a corrosion-resistant coating, a corrosion-resistant layer, a first high-strength layer, a second high-strength layer and a base material layer, the corrosion-resistant coating is epoxy resin paint, and the first high-strength layer and the second high-strength layer are arranged on the base material layer. The corrosion-resistant layer is made of austenitic stainless steel, and the first high-strength layer is made of alloy steel. According to the utility model, through the corrosion-resistant coating, the resonator body can have a good corrosion-resistant effect, the resonator body is prevented from being corroded by substances in an external environment in a long-time use process, the corrosion-resistant effect can be further improved by utilizing the corrosion-resistant coating, and the corrosion-resistant effect can be further improved by utilizing the first high-strength layer and the second high-strength layer. Therefore, the resonator body has good strength, the resonator body is prevented from being deformed and damaged due to the influence of external force, and the service life of the resonator body can be prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to double mode resonator and filter technical field, concretely is a kind of double mode resonator and filter based on FBAR. BACKGROUND

[0002] Double mode resonator main function is to produce resonance under specific frequency, and can support two kinds of resonance modes. It is more focused on providing specific frequency resonance response for circuit, and the coupling characteristics between two modes are used to process signal. For example, in some microwave circuits, double mode resonator can realize fine tuning of signal frequency or change of signal phase by adjusting the coupling degree of two modes, and the core function of filter is to select frequency of signal, extract useful frequency component in input signal, while suppressing useless frequency component. For example, in communication system, filter can accurately select required communication frequency band, and block interference signals of other frequency bands. The purpose of filter is to separate passband and stopband, so that the frequency signal meeting the requirements can pass through smoothly, and the one not meeting the requirements is attenuated, but the current double mode resonator has poor corrosion resistance, is easily corroded by substances in external environment during long time use, has short service life, and filter is installed by screw, so tools need to be carried during installation and disassembly, which is very troublesome, therefore, we propose a kind of double mode resonator and filter based on FBAR. SUMMARY

[0003] The utility model discloses a kind of double mode resonator and filter based on FBAR, with the advantages that double mode resonator has long service life, and filter is easy to install and disassemble, solve the current double mode resonator has poor corrosion resistance, is easily corroded by substances in external environment during long time use, has short service life, and filter is installed by screw, so tools need to be carried during installation and disassembly, which is very troublesome.

[0004] To achieve the above object, the utility model provides the following technical scheme: double mode resonator based on FBAR, including resonator body and base, the resonator body is installed at the right end of the top of base, the resonator body includes corrosion-resistant coating, corrosion-resistant layer, first high-strength layer, second high-strength and substrate layer, the corrosion-resistant coating is epoxy resin paint, the corrosion-resistant layer is austenitic stainless steel, the first high-strength layer is alloy steel, the second high-strength is amorphous silicon carbide, and the substrate layer is lead zirconate titanate ceramic.

[0005] Preferably, the corrosion-resistant coating is coated on the outside of the corrosion-resistant layer, and the corrosion-resistant layer is located outside the first high-strength layer.

[0006] Preferably, the first high-strength layer is located outside the second high-strength layer, which is located outside the substrate layer.

[0007] A filter based on FBAR, including filter body and base, the filter body is located at the left end of the base, the left and right ends of the filter body bottom are provided with installation slot, the inner cavity of the installation slot is rotatably connected with the rotating rod through the bearing, the outer surface of the rotating rod is fixedly connected with the driving gear, the lower part of the right side of the installation slot inner cavity is fixedly connected with the connecting plate, the bottom of the connecting plate is rotatably connected with the threaded rod through the bearing, the outer surface of the threaded rod is fixedly connected with the driven gear, the driven gear is meshed with the driving gear.

[0008] Preferably, the top of the base is provided with a threaded groove, and the threaded rod is screwedly connected with the inner cavity of the threaded groove.

[0009] Preferably, the left end of the rotating rod is fixedly connected with a rotating handle, and the outer surface of the rotating handle is provided with anti-skid lines.

[0010] Preferably, the right side of the filter body is fixedly connected with a positioning block, the top of the base is fixedly connected with a positioning groove block, and the positioning block is movably connected with the positioning groove block.

[0011] Compared with the prior art, the filter based on FBAR has the following beneficial effects:

[0012] 1、The corrosion-resistant coating can make the resonator body have good corrosion resistance, avoid the resonator body from being corroded by substances in the external environment during long-term use, further improve the corrosion resistance by using the corrosion-resistant layer, and make the resonator body have good strength by using the first high-strength layer and the second high-strength layer, so that the resonator body is not deformed and damaged by external force, and the service life of the resonator body is improved.

[0013] 2、The rotating handle can drive the rotating rod to rotate, and under the action of the driving gear, the driven gear can be driven to rotate, so that the threaded rod can be driven to rotate, the threaded rod can be used in cooperation with the threaded groove, when the rotating handle is rotated clockwise, the threaded rod will leave the threaded groove, when the rotating handle is rotated counterclockwise, the threaded rod will enter the threaded groove, so that the filter based on FBAR can be installed and disassembled without using tools, which is very convenient. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of the utility model;

[0015] Figure 2 It is a top view structural schematic view of the utility model;

[0016] Figure 3The utility model discloses a main view section structure schematic diagram;

[0017] Figure 4 The utility model discloses an A place amplification structure schematic diagram;

[0018] Figure 5 The utility model discloses a resonator body structure schematic diagram.

[0019] In the drawing: 1, base; 2, filter body; 3, handle; 4, resonator body; 401, corrosion -resistant coating; 402, corrosion -resistant layer; 403, first high -strength layer; 404, second high -strength; 405, substrate layer; 5, rotating rod; 6, positioning block; 7, positioning groove block; 8, installation groove; 9, driving gear; 10, connecting plate; 11, threaded groove; 12, threaded rod; 13, driven gear. DETAILED DESCRIPTION

[0020] The utility model discloses an A place amplification structure schematic diagram;

[0021] Secondly, the "an embodiment" or "embodiment" referred to here means that the specific features, structures or characteristics can be included in at least one implementation of the utility model. In this specification, "in an embodiment" does not mean the same embodiment, nor is it an embodiment that is separate or selective and mutually exclusive with other embodiments.

[0022] Embodiment one:

[0023] Please refer to Figure 1 、 Figure 2 、 Figure 3 And 5 The utility model provides a double -mode resonator based on FBAR, including resonator body 4 and base 1, and resonator body 4 installs at the right end of the top of base 1, and resonator body 4 includes corrosion -resistant coating 401, corrosion -resistant layer 402, first high -strength layer 403, second high -strength 404 and substrate layer 405, and corrosion -resistant coating 401 is epoxy resin paint, and corrosion -resistant layer 402 is austenitic stainless steel, and first high -strength layer 403 is alloy steel, and second high -strength 404 is amorphous silicon carbide, and substrate layer 405 is lead zirconate titanate ceramic, and corrosion -resistant coating 401 is coated on the outside of corrosion -resistant layer 402, and corrosion -resistant layer 402 is located on the outside of first high -strength layer 403, and first high -strength layer 403 is located on the outside of second high -strength 404, and second high -strength 404 is located on the outside of substrate layer 405.

[0024] The resonator body 4 has good corrosion resistance by the corrosion-resistant coating 401, avoids corrosion of the resonator body 4 by substances in the external environment during long-term use, the corrosion resistance can be further improved by the corrosion-resistant layer 402, the resonator body 4 has good strength by the first high-strength layer 403 and the second high-strength layer 404, avoids deformation and damage of the resonator body 4 due to external force, and the service life of the resonator body 4 can be improved.

[0025] Embodiment two:

[0026] Please refer to Figures 1-4 The utility model provides a filter based on FBAR, including filter body 2 and base 1, filter body 2 is located at the left end of base 1, and the left and right ends of the bottom of filter body 2 are all set up with installation groove 8, the inner chamber of installation groove 8 is rotatably connected with the rotating rod 5 through the bearing, and the outer surface of rotating rod 5 is fixedly connected with driving gear 9, and the lower part of the right side in the inner chamber of installation groove 8 is fixedly connected with connecting plate 10, and the bottom of connecting plate 10 is rotatably connected with threaded rod 12 through the bearing, and the outer surface of threaded rod 12 is fixedly connected with driven gear 13, and driven gear 13 is engagedly connected with driving gear 9, and the top of base 1 is set up with screw groove 11, and threaded rod 12 is screwedly connected with the inner chamber of screw groove 11, and the left end of rotating rod 5 is fixedly connected with handle 3, and the outer surface of handle 3 is provided with antiskid line, and the right side of filter body 2 is fixedly connected with locating block 6, and the top of base 1 is fixedly connected with locating groove block 7, and locating block 6 is movably connected with locating groove block 7.

[0027] The handle 3 can drive the rotating rod 5 to rotate, and under the action of the driving gear 9, the driven gear 13 can be driven to rotate, so that the threaded rod 12 can be driven to rotate, so that the threaded rod 12 can be used in cooperation with the screw groove 11, when the handle 3 is rotated clockwise, the threaded rod 12 will leave the screw groove 11, when the handle 3 is rotated counterclockwise, the threaded rod 12 will enter the screw groove 11, so that the installation and disassembly can be carried out without using tools, which is very convenient.

[0028] The working principle of the utility model is: through the corrosion -resistant coating 401, can make that resonator body 4 has good corrosion -resistance effect, avoid that resonator body 4 is corroded by the substance in external environment in long -time use process, utilize corrosion -resistant layer 402, can further improve corrosion -resistance effect, utilize first high -strength layer 403 and second high -strength 404, can make that resonator body 4 has good strength, avoid that resonator body 4 is influenced by external force and deforms damage, can improve the service life of resonator body 4, through the handle 3, can drive the rotating lever 5 rotation, and under the action of driving gear 9, can drive driven gear 13 rotation, thereby can drive threaded rod 12 rotation, make threaded rod 12 can with threaded groove 11 cooperation uses, when clockwise rotating handle 3, threaded rod 12 will leave threaded groove 11, when counterclockwise rotating handle 3, threaded rod 12 will enter threaded groove 11, thereby need not use tool to carry out installation and disassembly, it is very convenient.

[0029] Importantly, it should be noted that the constructions and arrangements of the present application shown in the various exemplary embodiments are illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications can be made to the embodiments without materially departing from the novel teachings and advantages of the subject matter described in this application (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters, mounting arrangements, use of materials, colors, orientations, etc.). For example, elements shown as integrally formed can be constructed of multiple parts or elements, the position of elements can be reversed or otherwise varied, and the nature or number of discrete elements or positions can be altered or varied. Accordingly, all such modifications are intended to be included within the scope of the present application. The order or sequence of any process or method steps can be changed or re-sequenced without departing from the generality of the application. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes, and omissions can be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the present application. Accordingly, the present application is not limited to the particular embodiments described and illustrated herein, but extends to equivalents of which the skilled in the art has knowledge of based on this disclosure.

[0030] Furthermore, in order to provide a concise description of exemplary embodiments, all features of an actual implementation can not be described (i.e., those unrelated to the presently considered best mode of carrying out the present application, or those unrelated to achieving the present application).

[0031] It should be explained finally that the above embodiment is only used to illustrate the technical scheme of the utility model, and is not the limit of the protection scope of the utility model, although the utility model is explained in detail with reference to the preferred embodiment, the ordinary skilled in the art should understand that the technical scheme of the utility model can be modified or replaced equivalently, and does not deviate from the essence and scope of the technical scheme of the utility model.

Claims

1. A dual-mode resonator based on FBAR, comprising a resonator body (4) and a base (1), characterized in that: The resonator body (4) is mounted on the right end of the top of the base (1). The resonator body (4) includes a corrosion-resistant coating (401), a corrosion-resistant layer (402), a first high-strength layer (403), a second high-strength layer (404), and a substrate layer (405). The corrosion-resistant coating (401) is epoxy resin paint, the corrosion-resistant layer (402) is austenitic stainless steel, the first high-strength layer (403) is alloy steel, the second high-strength layer (404) is amorphous silicon carbide, and the substrate layer (405) is lead zirconate titanate ceramic.

2. The dual-mode resonator based on FBAR according to claim 1, characterized in that: The corrosion-resistant coating (401) is applied to the outside of the corrosion-resistant layer (402), which is located outside the first high-strength layer (403).

3. A dual-mode resonator based on FBAR according to claim 1, characterized in that: The first high-strength layer (403) is located outside the second high-strength layer (404), and the second high-strength layer (404) is located outside the substrate layer (405).

4. A filter based on FBAR, comprising a filter body (2) and a base (1), characterized in that: The filter body (2) is located at the left end of the base (1). The filter body (2) has mounting slots (8) at both the left and right ends. The inner cavity of the mounting slot (8) is rotatably connected to a rotating rod (5) through a bearing. The outer surface of the rotating rod (5) is fixedly connected to a drive gear (9). The lower right side of the inner cavity of the mounting slot (8) is fixedly connected to a connecting plate (10). The bottom of the connecting plate (10) is rotatably connected to a threaded rod (12) through a bearing. The outer surface of the threaded rod (12) is fixedly connected to a driven gear (13). The driven gear (13) meshes with the drive gear (9).

5. A filter based on FBAR according to claim 4, characterized in that: The top of the base (1) is provided with a threaded groove (11), and the threaded rod (12) is threadedly connected to the inner cavity of the threaded groove (11).

6. A filter based on FBAR according to claim 4, characterized in that: The left end of the rotating rod (5) is fixedly connected to the handle (3), and the outer surface of the handle (3) is provided with anti-slip texture.

7. A filter based on FBAR according to claim 4, characterized in that: A positioning block (6) is fixedly connected to the right side of the filter body (2), and a positioning groove block (7) is fixedly connected to the top of the base (1). The positioning block (6) and the positioning groove block (7) are movably connected.

Images