CN218182452U

CN218182452U - Sectional type combination low frequency ceramic syntonizer, wave filter

Info

Publication number: CN218182452U
Application number: CN202222475927.3U
Authority: CN
Inventors: 崔荣基; 宋通
Original assignee: Zhejiang Changfei Technology Co ltd
Current assignee: Zhejiang Changfei Technology Co ltd
Priority date: 2022-09-19
Filing date: 2022-09-19
Publication date: 2022-12-30
Anticipated expiration: 2032-09-19

Abstract

A sectional type combined low-frequency ceramic resonator comprises N sections of resonator bodies connected end to end, wherein N is more than 3, each resonator body is a cuboid, the length of each resonator body is 7-15mm, and silver layers are coated on four side faces of each resonator body; the left end face of the first section of resonator body is coated with a silver layer, the center of the left end face is carved with a first pattern, the right end face of the first section of resonator body is coated with an annular silver layer, and the center of the right end face is carved with a second pattern; the left end face and the right end face of the resonator body from the second section to the Nth section are coated with annular silver layers, and the center parts of the left end face and the right end face are engraved with second patterns.

Description

Sectional type combination low frequency ceramic syntonizer, wave filter

Technical Field

The utility model relates to a syntonizer technical field especially involves a sectional type combination low frequency ceramic syntonizer, wave filter.

Background

In general, for a ceramic resonator having a frequency of 150MHz or less, a low frequency is achieved by molding a ceramic substrate having a length longer than 52 mm; when the frequency is low, the length of the ceramic matrix is too long, the ceramic matrix is easy to crack during dry pressing, and a forming die core rod is easy to crack, so that the forming process for a forming press and powder is very strict, the mass production is not facilitated, and even the mass production cannot be realized; because the matrix is too long, after the green body is sintered, the obtained mature green body is easy to crack, deform and other serious problems, so that the reject ratio is very high, and the requirement of mass production cannot be met.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, provide a sectional type combination low frequency ceramic syntonizer, wave filter.

The utility model discloses a realize through following technical scheme:

a sectional type combined low-frequency ceramic resonator comprises N sections of resonator bodies connected end to end, wherein N is more than 3, each resonator body is a cuboid, the length of each resonator body is 7-15mm, and silver layers are coated on four side faces of each resonator body; the left end face of the first section of resonator body is coated with a silver layer, the center of the left end face is carved with a first pattern, the right end face of the first section of resonator body is coated with an annular silver layer, and the center of the right end face is carved with a second pattern; and the left end surface and the right end surface of the resonator bodies from the second section to the Nth section are coated with annular silver layers, and the central parts of the left end surface and the right end surface are respectively carved with a second pattern. Among this technical scheme, to that the ceramic base shaping degree of difficulty is big for size length is greater than 52mm, the easy problem of splitting, this technical scheme realizes the low frequency through adopting to make up into the ceramic base that is greater than 52mm with N section syntonizer body, and the connection is realized to the silver pattern of counterface, has realized the purpose of ceramic base length of side.

The utility model discloses a further set up to: the length of the resonator body is 15mm; the interval value that the ceramic base member yields is high at present is generally located 7-15mm, therefore, for production, the ceramic base member of selection 15mm length can reduce cost relatively, for example, if the ceramic base member of 53mm length is required, then generally can adopt three sections of 15mm ceramic base members to cooperate with one section of 8mm ceramic base member, so be four sections, if adopt five sections of 8mm ceramic base members to cooperate with one section of 13mm ceramic base member, this kind of mode of adopting six sections obviously can reduce production efficiency.

The utility model discloses a further set up to: the N sections of resonator bodies are connected through conductive silver paste; the N sections of resonator bodies are connected through tin soldering; the lead silver paste or the soldering connection can be used as the preferred connection mode of the technical scheme.

The utility model discloses a further set up to: the first pattern and the second pattern are both vertical strip-shaped structures; the first pattern and the second pattern are both circular structures; the shape of the pattern can be any one, the technical scheme adopts only one mode of circular or vertical strip, and the purpose is to match the annular silver layer to connect two adjacent resonator bodies; further, the shape of the pattern may also change the frequency of the resonator body to some extent.

A filter comprises the resonator.

The utility model discloses a sectional type combination low frequency ceramic syntonizer, wave filter compares with prior art:

the sectional welding combination of the later process of the resonator manufacture realizes the purpose of lengthening the ceramic matrix, and effectively solves the problems of difficult molding, easy cracking during sintering and easy deformation of the matrix during molding; the whole service life is prolonged.

Drawings

Fig. 1 is a schematic view of the splitting structure of the present invention.

Fig. 2 is a schematic diagram of the splitting structure of the present invention.

Fig. 3 is a schematic view of the present invention.

The corresponding part names indicated by the numbers and letters in the drawings:

wherein: 10. a resonator body; 20. a first pattern; 30. an annular silver layer; 40. and a second pattern.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

Wherein the showings are for the purpose of illustration only and not for the purpose of limiting the same, the same is shown by way of illustration only and not in the form of limitation; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not indicated or implied that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are used only for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms will be understood by those skilled in the art according to the specific circumstances.

The first embodiment is as follows:

referring to fig. 1 to 3, the sectional type combined low-frequency ceramic resonator comprises N sections of resonator bodies 10 connected end to end, wherein N is greater than 3, the resonator body 10 is a cuboid, the length of the resonator body 10 is 7-15mm, and four side surfaces of the resonator body 10 are coated with silver layers; the left end face of the first section of resonator body 10 is coated with a silver layer, the center of the left end face is carved with a first pattern 20, the right end face of the first section of resonator body 10 is coated with an annular silver layer 30, and the center of the right end face is carved with a second pattern 40; the left end face and the right end face of the resonator bodies 10 at the second section to the Nth section are coated with annular silver layers 30, and the center parts of the left end face and the right end face are engraved with a second pattern 40. The technical scheme solves the difficulty of the original forming into a whole with long size well in a mode of combining N sections, and achieves the purpose of lengthening the ceramic substrate.

Preferably, the length of the resonator body 10 is 15mm. Wherein, the length of the resonator body 10 is selected to be 15mm, so that the resonator is easy to form, sinter and deform.

Preferably, the N sections of resonator bodies 10 are connected through conductive silver paste; the N-stage resonator bodies 10 are connected by soldering. In the above technical scheme, the conductive silver paste and the soldering tin are both arranged at the annular silver layer.

Preferably, the first pattern 20 and the second pattern 40 are both vertical stripe structures.

Preferably, the first pattern 20 and the second pattern 40 are both circular structures. It should be noted here that the pattern shapes of the first pattern 20 and the second pattern 40 may be the same or different.

The principle of the technical scheme is as follows:

firstly, carrying out metallization silver plating on N sections of sintered ceramic blanks, carrying out laser photoetching on end faces of the metalized products in the length direction to carve special patterns, and combining the products subjected to N sections of laser in an end-to-end sectional manner through silver paste or tin paste to enable the length of the products to reach the required length, thereby realizing the design of a low-frequency resonator.

The specific operation method comprises the following steps:

firstly, the method comprises the following steps: manufacturing a resonator end face pattern:

1) The first step is as follows: carrying out laser photoetching on the left end surface and the right end surface of the first section of resonator, wherein the first pattern on the left end surface is consistent with the second pattern on the right end surface;

2) The second step is that: and carrying out laser photoetching on the left end surface and the right end surface of the second-segment resonator to the Nth-segment resonator, wherein the patterns of the left end surface and the right end surface are a second pattern.

II, secondly, the method comprises the following steps: end face brushing slurry of the resonator:

a) Solder paste or silver paste or other conductive paste after sintering is dotted on the annular silver layer on the right end face of the first section of resonator;

b) The left and right end faces of the resonators of the second to N-2 th sections are operated as in the above step a;

c) And (C) operating according to the step A on only the left end face of the Nth section, and not operating the right end face.

Thirdly, the steps of: the head and the tail are connected and combined into a whole, and the whole is sintered and molded in a furnace.

Example two:

a filter comprises the resonator. The technical effect of the filter is consistent with that of the resonator, the filter is not easy to deform and crack, and the whole service life is prolonged.

Above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the design of the present invention, equivalent replacement or change should be covered within the protection scope of the present invention.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

Claims

1. The segmented combined low-frequency ceramic resonator is characterized by comprising N sections of resonator bodies (10) which are connected end to end, wherein N is larger than 3, each resonator body (10) is a cuboid, the length of each resonator body (10) is 7-15mm, and silver layers are coated on four side surfaces of each resonator body (10);

the left end face of the first-section resonator body (10) is coated with a silver layer, the center of the left end face is carved with a first pattern (20), the right end face of the first-section resonator body (10) is coated with an annular silver layer (30), and the center of the right end face is carved with a second pattern (40);

the left end face and the right end face of the second-section to Nth-section resonator bodies (10) are coated with annular silver layers (30), and the center parts of the left end face and the right end face are engraved with second patterns (40).

2. A segmented combined low frequency ceramic resonator as claimed in claim 1, wherein: the length of the resonator body (10) is 15mm.

3. A segmented combined low frequency ceramic resonator as claimed in claim 1, wherein: the N sections of resonator bodies (10) are connected through conductive silver paste.

4. A segmented combined low frequency ceramic resonator as claimed in claim 1, wherein: the N sections of resonator bodies (10) are connected through tin soldering.

5. The segmented combined low frequency ceramic resonator according to claim 1, wherein: the first pattern (20) and the second pattern (40) are both of a vertical stripe structure.

6. A segmented combined low frequency ceramic resonator as claimed in claim 1, wherein: the first pattern (20) and the second pattern (40) are both circular structures.

7. A filter comprising a resonator according to any of claims 1-6.