CN202308231U - TEM die coaxial medium ceramic filter - Google Patents
TEM die coaxial medium ceramic filter Download PDFInfo
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- CN202308231U CN202308231U CN2011204367492U CN201120436749U CN202308231U CN 202308231 U CN202308231 U CN 202308231U CN 2011204367492 U CN2011204367492 U CN 2011204367492U CN 201120436749 U CN201120436749 U CN 201120436749U CN 202308231 U CN202308231 U CN 202308231U
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- media ceramic
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- medium ceramic
- ceramic filter
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Abstract
The utility model relates to a TEM die coaxial medium ceramic filter which includes a cubic medium ceramic block (21) and a surface metal layer (22). The center of an end face of the medium ceramic block is provided with at least two cavities (23), and the axial lines of the cavities are in parallel, and the two ends of each cavity communicate with the end faces of the medium ceramic block. The surface metal layer (22) includes input and output electrodes (24) and surface electrodes (25). The medium ceramic block (21) is formed by two medium ceramic bodies (31, 33) which are glued via a glass slurry and then are sintered. The cavities (23) are grooves which are formed by mechanically slotting on a bonding face between the two medium ceramic bodies. Because the cavities in the medium ceramic filter is formed in a mechanical mode after the ceramic block is sintered, so products which are high in size precision and excellent in parameter consistency can be obtained. In production, the products can be manufactured through a method of big-size bonding and separate element cutting, so the TEM die coaxial medium ceramic filter is suitable for mass production.
Description
Technical field
The utility model relates to a kind of structure of TEM mould coaxial dielectric ceramic filter.
Background technology
TEM mould (transverse) coaxial dielectric ceramic filter can be applicable in the equipment such as radio communication, navigation, RFID, radar, base station.The knot of traditional T EM mould coaxial dielectric ceramic filter is as shown in Figure 1, comprises media ceramic piece 11 and surface metal-layer 12.The cavity 13 that the center of media ceramic piece has two two ends to connect.Surface metal-layer 12 comprises input, output electrode 14, surface electrode 16.This TEM mould coaxial dielectric filter forms final dielectric through sintering more normally through dry-pressing or hot die-casting molding.Because factors such as the pressure during moulding change, and the shrinkage during sintering is inconsistent, can influence the consistency of final products batch.For the bigger product of length dimension, also exist the centre position to shrink greater than two ends, the problem of irregular deformation appears.And, when making the dielectric filter product of different size, needing the different mould of processing, the production cycle is longer, and cost is higher.
Summary of the invention
The utility model is intended to propose that a kind of dimensional accuracy is high, the structure of the TEM mould coaxial dielectric ceramic filter of good product consistency.
This TEM mould coaxial dielectric ceramic filter comprises cube shaped media ceramic piece and surface metal-layer.There are at least two cavitys that its axis is parallel to each other and end face two ends and media ceramic piece connects at the center of the end face of media ceramic piece.Surface metal-layer comprises input, output electrode and surface electrode, and wherein surface electrode is distributed on the end face of an end of the upper and lower surfaces of media ceramic piece, two sides, cavity inner wall and cavitys.The media ceramic piece is bonding by two media ceramic body and function glass pastes, sintering forms, and described cavity is that the groove that forms with the method for mechanical slotting on two media ceramic body adhesive surfaces is formed.
This TEM mould coaxial dielectric ceramic filter is because its media ceramic piece is bonding by two media ceramic body and function glass pastes, sintering forms; The sintering temperature of glass paste is more much lower than the thermal sintering temperature of media ceramic body; The cavity that forms with the method for mechanical slotting can not be out of shape because of the sintering of glass paste; Thereby dimensional accuracy is high, and the parameter consistency of product is good.Media ceramic piece in this dielectric ceramic filter can adopt large stretch of bonding method that cuts into discrete component again to make; In concrete the production, as long as set up model, after the design of completion parameters through softwares such as HFSS, ADS; Just can the Rapid Realization sample making; Realization can be accelerated the product design progress to the quick response of client's application demand, reduces design cost.
Description of drawings
Fig. 1 is existing TEM mould coaxial dielectric ceramic filter through dry-pressing or hot die-casting molding;
Fig. 2 is the basic block diagram of the TEM mould coaxial dielectric ceramic filter of the utility model proposition;
Fig. 3 is a kind of structure chart of media ceramic piece;
Fig. 4 is second kind of structure chart of media ceramic piece;
Fig. 5 is the third structure chart of media ceramic piece;
Fig. 6 is for using large stretch of bonding flow chart that cuts into the making media ceramic piece of discrete component again;
Fig. 7 is the 4th a kind of structure chart of TEM mould coaxial dielectric ceramic block;
Fig. 8 is the 5th a kind of structure chart of TEM mould coaxial dielectric ceramic block;
Fig. 9 utilizes the amplitude frequency curve figure of the dielectric ceramic filter of the utility model making.
Embodiment
As shown in Figure 2, this TEM mould coaxial dielectric ceramic filter comprises cube shaped media ceramic piece 21 and surface metal-layer 22.There are at least two cavitys 23 (coupling aperture) that its axis is parallel to each other and end face two ends and media ceramic piece connects at the center of the end face of media ceramic piece 21.Surface metal-layer 22 comprises input, output electrode 24 and surface electrode 25, and wherein surface electrode 25 is distributed on the end face of an end of the upper and lower surfaces of media ceramic piece, two sides, cavity inner wall and cavitys.Media ceramic piece 21 is bonding by two media ceramic bodies, 31,33 usefulness glass pastes, sintering forms, and described cavity 23 is that the groove that forms with the method for mechanical slotting on two media ceramic body adhesive surfaces is formed.
As shown in Figure 3; Groove on the media ceramic body adhesive surface on this TEM mould coaxial dielectric ceramic filter can be the groove 32 of rectangle for the cross section on the adhesive surface of a media ceramic body 31; Another piece media ceramic body 33 is dull and stereotyped; Two media ceramic bodies are bonded together, and forming cross section is the cavity 23 of rectangle.
As shown in Figure 4; In this TEM mould coaxial dielectric ceramic filter; Groove on the described media ceramic body adhesive surface also can respectively use several cross sections of the method formation of mechanical slotting to be rectangle and the width groove 34 identical with spacing on the adhesive surface for two media ceramic bodies 31,33; Aligned with each other being bonded together of above-mentioned groove on two media ceramic bodies, forming cross section is the cavity 36 of rectangle.
As shown in Figure 5; In this TEM mould coaxial dielectric ceramic filter; Groove on the described media ceramic body adhesive surface also can respectively use the cross section of the method formation of mechanical slotting to be semicircle and the width groove 35 identical with spacing on the adhesive surface for two media ceramic bodies 31,33; Aligned with each other being bonded together of groove on two media ceramic bodies forms columniform cavity 37.
The media ceramic piece of this TEM mould coaxial dielectric ceramic filter can adopt large stretch of method bonding, that cut into discrete component again to make.Manufacturing process is as shown in Figure 6: the mode through mechanical slotting on the medium of firing in advance, processing large stretch of 42 forms many grooves 43.The width of groove, the degree of depth and spacing equidimension are confirmed by design.This medium large stretch of 42 is bonding through glass paste with another dull and stereotyped medium sheet 41 (or the medium that also has groove is large stretch of), forms firmly integral body 44 behind the high temperature sintering, forms single media ceramic piece 21 through cutting again.Make surface metal-layer through printing or electroplating technology at the surfaces externally and internally of media ceramic piece 21 then, promptly be made into the dielectric ceramic filter element.
Because the sintering temperature (about 750 ℃-850 ℃) of glass paste is lower than the sintering temperature (about 1400 ℃) of media ceramic; The sintering temperature (about 750 ℃-850 ℃) of the silver slurry of metal electrode layer; Have overlapping with the sintering temperature of glass paste; Glass paste and silver-colored slurry be sintering together, so the overall dimension of the TEM mould coaxial dielectric ceramic filter that is made into this method and the size and the position of coupling aperture all are to be determined by machining, precision is high, high conformity.This processing method also is fit to produce in batches.Fig. 9 is the amplitude-frequency characteristic figure of the dielectric ceramic filter of employing the utility model production.
The quantity of the cavity 23 in the media ceramic piece 21 of this TEM mould coaxial dielectric ceramic filter can be two, also can as Fig. 7, shown in Figure 8 be three, four or more a plurality of, be made into the dielectric ceramic filter element of multistage coupling.
Claims (4)
1. TEM mould coaxial dielectric ceramic filter; Comprise cube shaped media ceramic piece (21) and surface metal-layer (22); There are at least two cavitys (23) that its axis is parallel to each other and end face two ends and media ceramic piece connects at the center of the end face of media ceramic piece (21); Surface metal-layer (22) comprises input, output electrode (24) and surface electrode (25); Wherein surface electrode (25) is distributed on the end face of an end of the upper and lower surfaces of media ceramic piece, two sides, cavity inner wall and cavitys; It is characterized in that media ceramic piece (21) is bonding with glass paste by two media ceramic bodies (31,33), sintering forms, described cavity (23) is that the groove that forms with the method for mechanical slotting on two media ceramic body adhesive surfaces is formed.
2. TEM mould coaxial dielectric ceramic filter as claimed in claim 1; It is characterized in that groove on the described media ceramic body adhesive surface is that cross section on the adhesive surface of a media ceramic body (31) is the groove (32) of rectangle; Another piece media ceramic body (33) is dull and stereotyped; Two media ceramic bodies are bonded together, and forming cross section is the cavity (23) of rectangle.
3. TEM mould coaxial dielectric ceramic filter as claimed in claim 1; It is characterized in that groove on the described media ceramic body adhesive surface is that several cross sections that respectively use the method for mechanical slotting to form on the adhesive surface of two media ceramic bodies (31,33) are rectangle and the width groove (34) identical with spacing; Aligned with each other being bonded together of above-mentioned groove on two media ceramic bodies, forming cross section is the cavity (36) of rectangle.
4. TEM mould coaxial dielectric ceramic filter as claimed in claim 1; It is characterized in that groove on the described media ceramic body adhesive surface is that the cross section that respectively uses the method for mechanical slotting to form on the adhesive surface of two media ceramic bodies (31,33) is semicircle and the width groove (35) identical with spacing; Aligned with each other being bonded together of groove on two media ceramic bodies forms columniform cavity (37).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204367492U CN202308231U (en) | 2011-11-04 | 2011-11-04 | TEM die coaxial medium ceramic filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204367492U CN202308231U (en) | 2011-11-04 | 2011-11-04 | TEM die coaxial medium ceramic filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202308231U true CN202308231U (en) | 2012-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204367492U Expired - Lifetime CN202308231U (en) | 2011-11-04 | 2011-11-04 | TEM die coaxial medium ceramic filter |
Country Status (1)
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| CN (1) | CN202308231U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106356601A (en) * | 2015-07-17 | 2017-01-25 | 东光株式会社 | Input/output coupling structure of dielectric waveguide |
| CN106558747A (en) * | 2015-09-28 | 2017-04-05 | 中兴通讯股份有限公司 | A kind of wave filter of resonator cavity and its composition |
-
2011
- 2011-11-04 CN CN2011204367492U patent/CN202308231U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106356601A (en) * | 2015-07-17 | 2017-01-25 | 东光株式会社 | Input/output coupling structure of dielectric waveguide |
| CN106356601B (en) * | 2015-07-17 | 2020-01-17 | 株式会社村田制作所 | Input/output connection structure of dielectric waveguide |
| CN106558747A (en) * | 2015-09-28 | 2017-04-05 | 中兴通讯股份有限公司 | A kind of wave filter of resonator cavity and its composition |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120704 |