CN108270411A - A kind of microminiature radio frequency interference filter - Google Patents
A kind of microminiature radio frequency interference filter Download PDFInfo
- Publication number
- CN108270411A CN108270411A CN201810165477.3A CN201810165477A CN108270411A CN 108270411 A CN108270411 A CN 108270411A CN 201810165477 A CN201810165477 A CN 201810165477A CN 108270411 A CN108270411 A CN 108270411A
- Authority
- CN
- China
- Prior art keywords
- electric capacity
- shell
- ceramic tubular
- capacity chip
- lead
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H1/00—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
- H03H1/0007—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network of radio frequency interference filters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H1/00—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H1/00—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
- H03H2001/0014—Capacitor filters, i.e. capacitors whose parasitic inductance is of relevance to consider it as filter
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H1/00—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
- H03H2001/0021—Constructional details
- H03H2001/0085—Multilayer, e.g. LTCC, HTCC, green sheets
Abstract
The invention discloses a kind of microminiature radio frequency interference filters, including multilayer monolith ceramic tubular electric capacity chip 4, lead 1, encapsulating material and shell 2, multilayer monolith ceramic tubular electric capacity chip is set in the shell, the external electrode and cage connection of multilayer monolith ceramic tubular electric capacity chip, lead is inserted into shell in multilayer monolith ceramic tubular electric capacity chip, the interior electrode of multilayer monolith ceramic tubular electric capacity chip links together with lead, in shell, multilayer monolith ceramic tubular electric capacity chip, encapsulating material is filled in space between lead, the multilayer monolith ceramic tubular electric capacity chip outer diameter is 0.9mm 10mm.Electric capacity chip of the present invention is the monolithic ceramic multilayer monolith ceramic tubular capacitance that minimum outer diameter can be 0.9mm so that this rfi filter minimum outer diameter can accomplish 1.5mm, substantially reduce component size and weight.
Description
Technical field
The invention belongs to filtering device fields, and in particular to microminiature radio frequency interference filter field.
Background technology
With the rapid raising of electronic device works frequency, the frequency of electromagnetic interference is also higher and higher, and interfering frequency is usual
Hundreds of MHz or even more than GHz can be reached, must use rfi filter could effectively the electromagnetic noise of such high frequency
Ground filters out.This makes feedthrough capacitor formula wave filter also more and more extensive as the application of rfi filter, but due to equipment not
Disconnected develops to miniaturization, lightness direction, this causes device requirement also less and less, and traditional feedthrough capacitor formula wave filter is
It is unable to meet demand.Traditional feedthrough capacitor formula wave filter substantially using the ceramic condenser pipe of extrusion forming as chip,
The technique that is squeezed limits, and outer diameter is all in more than 2.0mm, and along with shell, this allows for traditional feedthrough capacitor formula wave filter outer diameter
It cannot accomplish below 3.0mm.
Invention content
It is an object of the invention to：Cannot meet the needs of small size to solve current rfi filter, provide
A kind of electric capacity chip outer diameter can be reduced to 0.9mm, and housing outer diameter can be reduced to the microminiature radio frequency interference filter of 1.5mm.
The technical solution adopted by the present invention is as follows：
A kind of microminiature radio frequency interference filter, including multilayer monolith ceramic tubular electric capacity chip 4, lead 1, encapsulating material
With shell 2, multilayer monolith ceramic tubular electric capacity chip is set inside the shell, the external electrode of multilayer monolith ceramic tubular electric capacity chip
With cage connection, lead is inserted into shell in multilayer monolith ceramic tubular electric capacity chip, multilayer monolith ceramic tubular electric capacity chip
Interior electrode link together with lead, filled in the space between shell, multilayer monolith ceramic tubular electric capacity chip, lead
There is encapsulating material, the multilayer monolith ceramic tubular electric capacity chip outer diameter value is 0.9mm-10mm.
Further, the external electrode of the multilayer monolith ceramic tubular electric capacity chip and cage connection, multilayer monolith ceramic tube
Interior electrode and the lead connection of shape electric capacity chip are all to connect by welding.
Further, the encapsulating material is included between shell, enclosure lead, multilayer monolith ceramic tubular electric capacity chip
Encapsulating material 5 and shell one end port at encapsulating material 3 between lead and shell.
Further, the encapsulating material between the shell, enclosure lead, multilayer monolith ceramic tubular electric capacity chip is
Epoxy resin.
Further, the encapsulating material at the port of described shell one end between lead and shell is glass insulator or asphalt mixtures modified by epoxy resin
Fat.
Further, the outer diameter value of the shell is 15mm-1.5mm.
In conclusion by adopting the above-described technical solution, the beneficial effects of the invention are as follows：
1st, in the present invention, using monolithic ceramic multilayer monolith ceramic tubular capacitance as chip, outer diameter can be reduced to
0.9mm realizes the smaller of size, also not by extrusion process of the ceramic condenser pipe of conventional extrusion as electric capacity chip
Limitation, while cause this rfi filter minimum outer diameter that can accomplish 1.5mm, component size and weight are substantially reduced, is made
Device disclosure satisfy that be increasingly miniaturized, the equipment of lightness；
2nd, in the present invention, the encapsulating material at the port of shell one end between lead and shell can select glass insulator,
Its good insulation preformance can be made its accurate positioning, and stability is good, will not be deformed with anchor leg.
Description of the drawings
Fig. 1 is front view sectional view of the present invention;
It is marked in figure：1- leads；2- shells；Encapsulating material at the port of 3- shells one end between lead and shell；4- cores
Piece；Encapsulating material between 5- shells, enclosure lead, multilayer monolith ceramic tubular electric capacity chip；
Fig. 2 is right view sectional view of the present invention；
It is marked in figure：1- leads；2- shells；Encapsulating material at the port of 3- shells one end between lead and shell；4- cores
Piece.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, it is right
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, not
For limiting the present invention.
A kind of microminiature radio frequency interference filter, as shown in Fig. 1 sectional views, including multilayer monolith ceramic tubular electric capacity chip
4, lead 1, shell 2, encapsulating material 3 and shell, enclosure lead, multilayer at the port of shell one end between lead and shell
Encapsulating material 5 between monolithic ceramic tubulose electric capacity chip, multilayer monolith ceramic tubular electric capacity chip are set in the shell, multilayer
Monolithic ceramic tubulose electric capacity chip external electrode and cage connection, lead are inserted into multilayer monolith ceramic tubular electric capacity chip in shell
In, electrode links together with lead in multilayer monolith ceramic tubular electric capacity chip, in shell, multilayer monolith ceramic tubular capacitance
Encapsulating material is filled in space between chip, lead.
The multilayer monolith ceramic tubular electric capacity chip external diametrical extent is 0.9mm-10mm, and minimum can be 0.9mm, accordingly
The outer diameter of the shell ranging from 15mm-1.5mm, minimum can accomplish 1.5mm.
The external electrode of the multilayer monolith ceramic tubular electric capacity chip and cage connection, multilayer monolith ceramic tubular capacitance core
Interior electrode and the lead connection of piece are all to connect by welding.
Between the shell, multilayer monolith ceramic tubular capacitance inner lead, multilayer monolith ceramic tubular electric capacity chip
Encapsulating material is.
Encapsulating material between the multilayer monolith ceramic tubular capacitance outside lead and shell is glass insulator or ring
Oxygen resin.
A kind of production method of corresponding microminiature radio frequency interference filter of the present invention：Electrode welding in lead and chip is existed
Together, the lead that chip is welded is being penetrated into housing, and by off-chip capacitive pole together with case weld, by housing and lead
Between space, be fixed together with glass insulator and encapsulating material.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of microminiature radio frequency interference filter, it is characterised in that：Including multilayer monolith ceramic tubular electric capacity chip (4), draw
Line (1), encapsulating material and shell (2), multilayer monolith ceramic tubular electric capacity chip are set inside the shell, multilayer monolith ceramic tubular
The external electrode and cage connection of electric capacity chip, lead are inserted into shell in multilayer monolith ceramic tubular electric capacity chip, multilayer monolith
The interior electrode of ceramic tubular electric capacity chip is connect with lead, between shell, multilayer monolith ceramic tubular electric capacity chip, lead
Filled with encapsulating material in space, the multilayer monolith ceramic tubular electric capacity chip outer diameter value is 0.9mm-10mm.
2. a kind of microminiature radio frequency interference filter according to claim 1, it is characterised in that：The multilayer monolith ceramics
The external electrode and cage connection of tubular capacitor chip, the interior electrode of multilayer monolith ceramic tubular electric capacity chip and lead connection are all
It connects by welding.
3. a kind of microminiature radio frequency interference filter according to claim 1, it is characterised in that：The encapsulating material includes
Draw at encapsulating material (5) and shell one end port between shell, enclosure lead, multilayer monolith ceramic tubular electric capacity chip
Encapsulating material (3) between line and shell.
4. a kind of microminiature radio frequency interference filter according to claim 2, it is characterised in that：In the shell, shell
Encapsulating material between portion's lead, multilayer monolith ceramic tubular electric capacity chip is epoxy resin.
5. a kind of microminiature radio frequency interference filter according to claim 2, it is characterised in that：Described shell one end port
It is glass insulator or epoxy resin to locate the encapsulating material between lead and shell.
6. a kind of microminiature radio frequency interference filter according to claim 1, it is characterised in that：The outer diameter ruler of the shell
Very little is 15mm-1.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810165477.3A CN108270411A (en) | 2018-02-28 | 2018-02-28 | A kind of microminiature radio frequency interference filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810165477.3A CN108270411A (en) | 2018-02-28 | 2018-02-28 | A kind of microminiature radio frequency interference filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108270411A true CN108270411A (en) | 2018-07-10 |
Family
ID=62774582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810165477.3A Pending CN108270411A (en) | 2018-02-28 | 2018-02-28 | A kind of microminiature radio frequency interference filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108270411A (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6351368B1 (en) * | 1999-04-23 | 2002-02-26 | Expantech. Co., Ltd. | Lead-through type filter with built-in rectangular elements |
| CN2606437Y (en) * | 2003-03-03 | 2004-03-10 | 成都宏明电子股份有限公司 | Threading lead wire feed-through capacitor |
| CN101819879A (en) * | 2010-04-02 | 2010-09-01 | 张志伟 | Monolithic ceramic tube and preparation method thereof |
| CN102412804A (en) * | 2011-10-27 | 2012-04-11 | 成都宏明电子股份有限公司 | Crimping feed-through filter |
| CN103268820A (en) * | 2013-04-30 | 2013-08-28 | 成都迪博电子科技有限公司 | Method for increasing capacitance of multilayer ceramic tubular capacitor |
| CN103280287A (en) * | 2013-04-30 | 2013-09-04 | 成都迪博电子科技有限公司 | Exporting method for mulitlayer embedded electrodes of feed-through tubular ceramic capacitor |
| CN103366957A (en) * | 2013-07-19 | 2013-10-23 | 株洲宏达电子有限公司 | Multi-core-combined ceramic capacitor and manufacturing method thereof |
| CN203521173U (en) * | 2013-10-12 | 2014-04-02 | 成都宏明电子科大新材料有限公司 | Microminiature feed-through capacitor |
| CN204362006U (en) * | 2014-12-09 | 2015-05-27 | 江苏坚力电子科技有限公司 | A kind of feed-through filter |
| CN105898914A (en) * | 2016-03-31 | 2016-08-24 | 中山市中广科研技术服务有限公司 | Rectifying and filtering device |
| CN205542415U (en) * | 2016-01-26 | 2016-08-31 | 株洲宏达陶电科技有限公司 | Mode of opening a way multicore combination ceramic capacitor |
| CN205790757U (en) * | 2016-05-31 | 2016-12-07 | 深圳市通茂电子有限公司 | A kind of filtering electrical connector |
| CN206340644U (en) * | 2016-12-28 | 2017-07-18 | 成都宏明电子科大新材料有限公司 | A kind of soft lead punching porcelain Jie's wave filter of high pressure |
| CN207995046U (en) * | 2018-02-28 | 2018-10-19 | 成都宇鑫洪科技有限公司 | A kind of microminiature radio frequency interference filter |
-
2018
- 2018-02-28 CN CN201810165477.3A patent/CN108270411A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6351368B1 (en) * | 1999-04-23 | 2002-02-26 | Expantech. Co., Ltd. | Lead-through type filter with built-in rectangular elements |
| CN2606437Y (en) * | 2003-03-03 | 2004-03-10 | 成都宏明电子股份有限公司 | Threading lead wire feed-through capacitor |
| CN101819879A (en) * | 2010-04-02 | 2010-09-01 | 张志伟 | Monolithic ceramic tube and preparation method thereof |
| CN102412804A (en) * | 2011-10-27 | 2012-04-11 | 成都宏明电子股份有限公司 | Crimping feed-through filter |
| CN103268820A (en) * | 2013-04-30 | 2013-08-28 | 成都迪博电子科技有限公司 | Method for increasing capacitance of multilayer ceramic tubular capacitor |
| CN103280287A (en) * | 2013-04-30 | 2013-09-04 | 成都迪博电子科技有限公司 | Exporting method for mulitlayer embedded electrodes of feed-through tubular ceramic capacitor |
| CN103366957A (en) * | 2013-07-19 | 2013-10-23 | 株洲宏达电子有限公司 | Multi-core-combined ceramic capacitor and manufacturing method thereof |
| CN203521173U (en) * | 2013-10-12 | 2014-04-02 | 成都宏明电子科大新材料有限公司 | Microminiature feed-through capacitor |
| CN204362006U (en) * | 2014-12-09 | 2015-05-27 | 江苏坚力电子科技有限公司 | A kind of feed-through filter |
| CN205542415U (en) * | 2016-01-26 | 2016-08-31 | 株洲宏达陶电科技有限公司 | Mode of opening a way multicore combination ceramic capacitor |
| CN105898914A (en) * | 2016-03-31 | 2016-08-24 | 中山市中广科研技术服务有限公司 | Rectifying and filtering device |
| CN205790757U (en) * | 2016-05-31 | 2016-12-07 | 深圳市通茂电子有限公司 | A kind of filtering electrical connector |
| CN206340644U (en) * | 2016-12-28 | 2017-07-18 | 成都宏明电子科大新材料有限公司 | A kind of soft lead punching porcelain Jie's wave filter of high pressure |
| CN207995046U (en) * | 2018-02-28 | 2018-10-19 | 成都宇鑫洪科技有限公司 | A kind of microminiature radio frequency interference filter |
Non-Patent Citations (2)
| Title |
|---|
| 翟宇: "滤波连接器用小尺寸高精度陶瓷滤波管芯", 《中国优秀硕士学位论文全文数据库工程科技Ⅱ辑》, no. 03, pages 042 - 627 * |
| 范跃农等: "电磁干扰陶瓷滤波器综述", 《压电与声光》, vol. 13, no. 2, pages 1 - 5 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107039146B (en) | winding inductor | |
| CN207995046U (en) | A kind of microminiature radio frequency interference filter | |
| CN202585129U (en) | Multilayer tubular porcelain dielectric feed-through capacitor | |
| CN108270411A (en) | A kind of microminiature radio frequency interference filter | |
| CN105680218A (en) | High frequency signal feed through | |
| CN206076469U (en) | Blind-mate coaxial is loaded | |
| CN205246851U (en) | A trapper and RF coil subassembly for magnetic resonance imaging | |
| JP6376623B2 (en) | Common mode filter | |
| CN105915242B (en) | Semiconductor device with a plurality of semiconductor chips | |
| CN103855455B (en) | A kind of harmonic oscillator, resonator, filtering device and electromagnetic wave device | |
| CN108054012A (en) | It is a kind of can Surface Mount installation molded packages liquid tantalum capacitor | |
| CN107093992B (en) | filter | |
| JP2017195363A (en) | Common mode filter | |
| CN209088902U (en) | A kind of resonance circuit and filter | |
| CN103280287B (en) | The deriving method of the embedded electrode of ceramic tubular feed-through capacitor multilayer | |
| CN207704997U (en) | A kind of patch type inductor and automobile | |
| CN203521173U (en) | Microminiature feed-through capacitor | |
| CN206225207U (en) | The structure of core-through capacitor | |
| CN206236769U (en) | A kind of combiner and antenna assembly | |
| CN212875754U (en) | Feedthrough capacitor filter | |
| CN212322839U (en) | Feedthrough capacitor filter | |
| KR20140025063A (en) | Chip inductor | |
| CN219611737U (en) | Coaxial elliptic function low-pass filter | |
| CN203219253U (en) | Enclosed type L-C low pass filter | |
| CN204013428U (en) | Stairstepping tubular type filter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |