CN2867619Y - Ceramic dielectric filter - Google Patents
Ceramic dielectric filter Download PDFInfo
- Publication number
- CN2867619Y CN2867619Y CN 200520014088 CN200520014088U CN2867619Y CN 2867619 Y CN2867619 Y CN 2867619Y CN 200520014088 CN200520014088 CN 200520014088 CN 200520014088 U CN200520014088 U CN 200520014088U CN 2867619 Y CN2867619 Y CN 2867619Y
- Authority
- CN
- China
- Prior art keywords
- ceramic dielectric
- dielectric filter
- district
- hole
- metal level
- 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.)
- Expired - Lifetime
Links
Images
Abstract
The utility model relates to a ceramic dielectric filter, which includes a ceramic dielectric main body and metal layer comprising conducting materials. The ceramic dielectric main body includes top surface, bottom surface, side surface, back surface and front surface. The metal layer is covered on the surface of the ceramic dielectric main body (expect top surface). Inside the ceramic dielectric main body is provided N through-holes that are covered with metal layer comprising conducting materials and pass through from the top surface to the bottom surface (N is positive integer above zero), on the front surface is provided two L-shaped open circuit regions that are not covered with the metal layer and extend from the front surface to both side surfaces, and the two open circuit regions of the front surface and side surface are respectively rounded to form input/output electrode with the top surface. The utility model can provide pass band with width twice as the pass band of the filter in the prior art.
Description
Technical field
The utility model relates to a kind of filter, particularly a kind of Ceramic Dielectric Filter.
Background technology
Communication equipments such as the mobile communication of various radio frequency bands, satellite fix, satellite navigation, remote control, remote measurement and satellite television, satelline radio are come out one after another, for people provide new communication mode easily, along with microwave communication technology and fast development digital, data processing technique, these communication apparatus are required to carry, original several times the amount of information greatly of transfer ratio, and this just requires the Primary Component Ceramic Dielectric Filter in these communication apparatus that wideer passband is arranged.Someone adopts and increases its I/O electrode 101,102 capacity area, as Fig. 1, shown in Figure 2, can suitably regulate coupling, to increase the passband width of certain limit, but it is subjected to the material of filter, inner shape of through holes with and size, effects limit such as distance between the two through hole distance, area increases to a certain degree will make and is coupled imbalance and causes impedance mismatching, cause widely different ripple attenuation variation, therefore increase its I/O electrode 101, the method of 102 capacity area, the passband width that increases is very limited, certainly, if change the internal structure of filter, can increase passband width, but the time-consuming cost of spending again.
Summary of the invention
The purpose of this utility model is to provide a kind of Ceramic Dielectric Filter, does not change the internal structure of prior art median filter, and as shown in Figure 1, 2, the change by the I/O electrode is provided with can provide bigger passband width.
The utility model is to achieve the above object by the following technical programs: a kind of Ceramic Dielectric Filter, comprise the metal level that a ceramic dielectric block main body and electric conducting material constitute, described ceramic filter main body comprises end face, the bottom surface, the side, the back side, positive, described metal level covers the surface of the ceramic filter main body of (except that end face), in the ceramic filter main body, be provided with the through hole of N the metal level that is coated with the electric conducting material formation from the end face to the bottom surface, N is the positive integer greater than zero, on the front, form the district that opens circuit that does not cover described metal level of two L types, the described district that opens circuit extends on the two sides from the front, forms the district that opens circuit that does not cover metal level of two L types, and two districts that open circuit on front and the side surround with end face respectively and form the I/O electrode.
A described N through hole is three manholes, is provided with the inductive coupled groove of two strip metals between three manholes on the described end face.
A described N through hole is two manholes.
A described N through hole is two ellipse holes.
A described N through hole is two eccentric circular ladder holes.
A described N through hole is three circular ladder holes of off-centre.
The beneficial effects of the utility model: the Ceramic Dielectric Filter of the utility model structure, do not change the internal structure of prior art median filter, change by the I/O electrode is provided with can provide than the wide passband more than a times of the passband width of filter shown in the prior art.
Description of drawings
Fig. 1 is the front three-dimensional view of Ceramic Dielectric Filter in the prior art;
Fig. 2 is the front three-dimensional view of another kind of Ceramic Dielectric Filter in the prior art;
Fig. 3 is the front three-dimensional view of Ceramic Dielectric Filter among the embodiment 1 of the present utility model;
Fig. 4 is the front three-dimensional view of another angle of Ceramic Dielectric Filter shown in Figure 3;
Fig. 5 is the equivalent circuit diagram of the Ceramic Dielectric Filter shown in Fig. 3;
Fig. 6 is the front three-dimensional view of Ceramic Dielectric Filter among the embodiment 2 of the present utility model;
Fig. 7 is the equivalent circuit diagram of the Ceramic Dielectric Filter shown in Fig. 6;
Fig. 8 is the front three-dimensional view of Ceramic Dielectric Filter among the utility model embodiment 3;
Fig. 9 is the front three-dimensional view of Ceramic Dielectric Filter among the utility model embodiment 4;
Figure 10 is the front three-dimensional view of Ceramic Dielectric Filter among the utility model embodiment 5;
Embodiment
The utility model is further elaborated by embodiment below in conjunction with accompanying drawing:
Embodiment 1: Fig. 3 is the front three-dimensional view of Ceramic Dielectric Filter among the embodiment 1 of the present utility model; Fig. 4 is the front three-dimensional view of another angle of Ceramic Dielectric Filter shown in Figure 3; Do not beat oblique line among Fig. 3,4 partly for being coated with the surface of metal level ceramic dielectric block, beating oblique line partly is the surface that does not have the ceramic dielectric block of metal level covering.As shown in Figure 3, Figure 4, ceramic material with ε r=91, make a long=9.5mm, wide=11.8mm, thick=3.8mm, at ceramic dielectric block 2 inner formation diameters is three straight-through circular holes of 1.2mm, on positive 202, form the district 206 that opens circuit that does not cover described metal level of two L types, 214, the described district 206 that opens circuit extends on the side 204 from positive 202, form the district 207 that opens circuit that does not cover metal level of L type, the district 206,207 that opens circuit surrounds with end face 209 and forms input electrode 208, the area=1.4 * 1.7mm of input electrode 208 on front 202
2, the area on side 204=1.4 * 2.0mm
2District 206 opens circuit, groove width=0.8mm of 207, the described district 214 that opens circuit, extend on the side 201 from front 202, form the district 215 that opens circuit that does not cover metal level of L type, district 214 opens circuit, 215 surround with end face 209 and to form output electrode 213, the area=1.4 * 1.7mm of output electrode 213 on positive 202
2, the area on side 201=1.4 * 2.0mm
2, the groove width 0.8mm in the district 214,215 that opens circuit, coupling slot 216,217 groove width 0.5mm.Can get centre frequency like this is 836.5MHz, and the 1dB bandwidth is the filter of 50MHz.If adopt the Ceramic Dielectric Filter of prior art structure, electrode mode as shown in Figure 1, then 1dB bandwidth maximum can only reach 25MHz.
Fig. 5 is the equivalent circuit diagram of the Ceramic Dielectric Filter shown in Fig. 4, Z210 among the figure, Z211, Z212 are three circular hole intra resonant cavity structure intrinsic impedances, Z110, Z112, Z120 is respectively Z210 and Z211, Z211 and Z212, the coupling impedance between Z210 and Z212, L216, L217 are inductive coupled groove, and C208, C213 are for being I/O electric capacity.When input signal enters C208, part passband external signal frequency is high resistant, signal frequency in the passband is low-resistance, and have partly out of band signal frequency, and after signal enters filter inside, three resonant cavity Z212, Z211, Z210 is through Z110, be coupled resonance respectively and form the passband of certain width of Z112, Z120.Through C208, the coupling of C213 is regulated its passband is broadened again, and the inductive coupled effect of L216 and L217 makes the attenuation outside a channel of passband change into the upper sideband decay fast.Z212, Z211, Z210 is when resonance, the inband signaling frequency is high resistant, to part out of band signal frequency be low-resistance and make it to enter " " and elimination, Z110, Z112, Z120 are low-resistance to the frequency of inband signaling and export through C213 when resonance, simultaneously the out of band signal frequency is high resistant and stops and pass through.
Embodiment 2: Fig. 6 is the front three-dimensional view of Ceramic Dielectric Filter among the embodiment 2 of the present utility model; Do not beat oblique line among Fig. 6 partly for being coated with the surface of metal level ceramic dielectric block, beating oblique line partly is the surface that does not have the ceramic dielectric block of metal level covering, as shown in Figure 6, ceramic material with ε r=91, make a long=5.1mm, wide=7.3mm, thick=3.7mm, at ceramic dielectric block 2 inner formation diameters is two straight-through circular holes of 1.2mm, on the front, form the district 206 that opens circuit that does not cover described metal level of two L types, 214, the described district 206 that opens circuit, 214 extend on side 204 and 201 from positive 202 respectively, form the district 207 that opens circuit that does not cover metal level of L type, 215, the district 206 and 207,214 and 215 that opens circuit surrounds with end face 209 respectively and forms I/O electrode 208/213, input electrode 208, the area=2.2 * 1.4mm on positive 202
2, the area on side 204=1.6 * 1.4mm
2, 206,207 groove width 0.8mm, output electrode 213 is at the area=2.2 * 1.4mm in front 202
2, the area on the side 201=1.6 * 1.4mm
2, 214,215 groove widths=0.8mm.Can get centre frequency like this is 1575.42MHz, and the 1dB bandwidth is the filter of 30MHz.If adopt the Ceramic Dielectric Filter of prior art structure, as shown in Figure 1, then 1dB bandwidth maximum can only reach 15MHz.
Fig. 7 is the equivalent circuit diagram of the Ceramic Dielectric Filter shown in Fig. 6, and the Z218 among the figure, Z219 are the intrinsic impedance of two resonant cavitys, Z208 is an intrinsic coupling impedance between two resonant cavitys, C is the coupling capacitance of regulating action, and C208, C213 are the I/O coupling capacitance.When input signal enters C208, the effect of C208 is that frequency in the band of output signal is low-resistance, the part out of band signal is high resistant, after signal enters filter inside, Z218, Z219 is under the coupling of Z208, resonance and form certain passband width respectively, under the coupling of C208 and C213, make its passband broadening, the lower sideband decay that coupling capacitance C makes it passband is fast.Work as Z218, during Z219 resonance, the signal frequency in the passband be high resistant, to part out of band signal frequency be low-resistance and enter " " elimination.And Z208 is low-resistance to the inband signaling frequency and makes it unimpeded and through C213 output, simultaneously out of band signal is high resistant and stops and pass through.
Embodiment 3: Ceramic Dielectric Filter difference structurally is among described Ceramic Dielectric Filter of present embodiment and the embodiment 2, at two straight-through elliptical apertures 220,221 of ceramic dielectric block 2 inner formation.
Embodiment 4: Ceramic Dielectric Filter difference structurally is among described Ceramic Dielectric Filter of present embodiment and the embodiment 2, at two circular ladder holes 222,223 of off-centre of ceramic dielectric block 2 inner formation.
Embodiment 5: Ceramic Dielectric Filter difference structurally is among described Ceramic Dielectric Filter of present embodiment and the embodiment 1, at three circular ladder holes 224,225,226 of off-centre of ceramic dielectric block 2 inner formation.
Protection range of the present utility model is not limited to the Ceramic Dielectric Filter shown in the embodiment, has the Ceramic Dielectric Filter of the through-hole structure of square through hole or other shape, also is the structure that the utility model is protected.
Structure shown in the utility model also can be applicable to also can serve the same role in the duplexer filter.
Claims (9)
1, a kind of Ceramic Dielectric Filter, comprise the metal level that a ceramic dielectric block main body (2) and electric conducting material constitute, described ceramic filter main body comprises end face (209), bottom surface (203), side (201,204), positive (202), the back side (205), described metal level covers the surface of the ceramic filter main body except that end face (209), in the ceramic filter main body, be provided with N through hole from end face (209) metal level that is coated with the electric conducting material formation of (203) to the bottom surface, N is the positive integer greater than zero, it is characterized in that, go up the district (206 that opens circuit that does not cover described metal level that forms two L types in positive (202), 214), the described district (206) that opens circuit extends on the side (204) from positive (202), form the district (207) that opens circuit that does not cover metal level of L type, district (206) opens circuit, open circuit district (207) and end face (209) surrounds and forms input electrode (208), the described district (214) that opens circuit extends on the side (201) from positive (202), form the district (215) that opens circuit that does not cover metal level of L type, district (214) opens circuit, open circuit district (215) and end face (209) surrounds and forms output electrode (213).
2, a kind of Ceramic Dielectric Filter according to claim 1 is characterized in that, a described N through hole is three manholes (210,211,212).
3, a kind of Ceramic Dielectric Filter according to claim 2 is characterized in that, is provided with the inductive coupled groove of two strip metals (216,217) between three manholes (210,211,212) on the described end face (209).
4, a kind of Ceramic Dielectric Filter according to claim 1 is characterized in that, a described N through hole is two manholes (218,219).
5, a kind of Ceramic Dielectric Filter according to claim 1 is characterized in that, a described N through hole is two ellipse holes (220,221).
6, a kind of Ceramic Dielectric Filter according to claim 1 is characterized in that, a described N through hole is two ladder holes.
7, a kind of Ceramic Dielectric Filter according to claim 6 is characterized in that, described ladder hole is an eccentric circular ladder hole (222,223).
8, a kind of Ceramic Dielectric Filter according to claim 1 is characterized in that, a described N through hole is three ladder holes.
9, a kind of Ceramic Dielectric Filter according to claim 8 is characterized in that, described ladder hole is three circular ladder holes of off-centre (224,225,226).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520014088 CN2867619Y (en) | 2005-08-15 | 2005-08-15 | Ceramic dielectric filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520014088 CN2867619Y (en) | 2005-08-15 | 2005-08-15 | Ceramic dielectric filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2867619Y true CN2867619Y (en) | 2007-02-07 |
Family
ID=37703325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520014088 Expired - Lifetime CN2867619Y (en) | 2005-08-15 | 2005-08-15 | Ceramic dielectric filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2867619Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101340014B (en) * | 2008-08-01 | 2012-04-04 | 苏州艾福电子通讯有限公司 | Ceramic dielectric filter and duplexer having slots |
| CN102509820A (en) * | 2011-11-04 | 2012-06-20 | 浙江嘉康电子股份有限公司 | Transverse electromagnetic (TEM)-mode coaxial dielectric ceramic filter and manufacturing method for same |
| CN103792447A (en) * | 2014-01-20 | 2014-05-14 | 常州嘉恩电子科技有限公司 | Ultrahigh-voltage ceramic filter |
| CN105489983A (en) * | 2016-01-04 | 2016-04-13 | 张家港保税区灿勤科技有限公司 | Dielectric filter |
| CN107210510A (en) * | 2015-11-28 | 2017-09-26 | 华为技术有限公司 | Dielectric resonator and wave filter |
| CN107959094A (en) * | 2016-10-17 | 2018-04-24 | 太盟光电科技股份有限公司 | The improved wave filter of structure |
| WO2020087378A1 (en) * | 2018-10-31 | 2020-05-07 | 华为技术有限公司 | Dielectric filter and communication device |
-
2005
- 2005-08-15 CN CN 200520014088 patent/CN2867619Y/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101340014B (en) * | 2008-08-01 | 2012-04-04 | 苏州艾福电子通讯有限公司 | Ceramic dielectric filter and duplexer having slots |
| CN102509820A (en) * | 2011-11-04 | 2012-06-20 | 浙江嘉康电子股份有限公司 | Transverse electromagnetic (TEM)-mode coaxial dielectric ceramic filter and manufacturing method for same |
| CN103792447A (en) * | 2014-01-20 | 2014-05-14 | 常州嘉恩电子科技有限公司 | Ultrahigh-voltage ceramic filter |
| CN107210510A (en) * | 2015-11-28 | 2017-09-26 | 华为技术有限公司 | Dielectric resonator and wave filter |
| CN107210510B (en) * | 2015-11-28 | 2020-01-03 | 华为技术有限公司 | Dielectric resonator and filter |
| US10847855B2 (en) | 2015-11-28 | 2020-11-24 | Huawei Technologies Co., Ltd. | Dielectric resonator and filter comprising a body with a resonant hole surrounded by an encirclement wall having a ring shaped exposed dielectric area |
| CN105489983A (en) * | 2016-01-04 | 2016-04-13 | 张家港保税区灿勤科技有限公司 | Dielectric filter |
| CN107959094A (en) * | 2016-10-17 | 2018-04-24 | 太盟光电科技股份有限公司 | The improved wave filter of structure |
| CN107959094B (en) * | 2016-10-17 | 2020-10-30 | 太盟光电科技股份有限公司 | Filter with improved structure |
| WO2020087378A1 (en) * | 2018-10-31 | 2020-05-07 | 华为技术有限公司 | Dielectric filter and communication device |
| US11509030B2 (en) | 2018-10-31 | 2022-11-22 | Huawei Technologies Co., Ltd. | Dielectric filter and communications device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2867619Y (en) | Ceramic dielectric filter | |
| US5512866A (en) | Ceramic duplex filter | |
| KR0147726B1 (en) | Dielectric filter | |
| EP0100350A1 (en) | Ceramic bandpass filter. | |
| CN102077465A (en) | Band elimination filter | |
| US20060255885A1 (en) | Bandpass filter, high-frequency module, and wireless communications equipment | |
| CN212874710U (en) | Thin film filter | |
| JP2012514954A (en) | Dual filter with concave top pattern and cavity | |
| CN111934072A (en) | Mixed different-wavelength resonant band-pass filter with capacitive coupling metal pattern | |
| CA2089547A1 (en) | Dielectric block filter with included shielded transmission line inductors | |
| CN107230828A (en) | Miniaturization filtering is antenna integrated | |
| CN107069203A (en) | Miniaturization high-gain filtering is antenna integrated | |
| RU2400874C1 (en) | Strip-line filter | |
| CN2901597Y (en) | Ceramic medium filter | |
| US20030201849A1 (en) | Dielectric filter device having conductive strip removed for improved filter characteristics | |
| US10581131B2 (en) | Ceramic filter with differential conductivity | |
| CN107634293A (en) | A kind of Mini Microstrip low pass filter with two transmission zeros | |
| CN212935860U (en) | Thin film filter | |
| US10153532B2 (en) | Filter structure improvement | |
| CN208797149U (en) | A kind of ultra wide band bandpass filter based on mirror image open circuit step electric impedance resonator | |
| CN2901598Y (en) | Ceramic medium filter | |
| CN210200926U (en) | Ultra-wideband filter based on microstrip line-coplanar waveguide structure | |
| CN208753482U (en) | A kind of cavity bandstop filter that performance is stable | |
| RU2659321C1 (en) | Miniature strip filter | |
| CN1206766C (en) | Dielectric ceramic filter with improved electrical characteristics in high side of filter passband |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jiaxing Jiali Electronic Co., Ltd. Assignor: Zhejiang Zhengyuan Electric Co., Ltd. Contract fulfillment period: 2008.5.30 to 2014.5.29 Contract record no.: 2008330000340 Denomination of utility model: Method for manufacturing ceramic dielectric filter and resonator inside ceramic dielectric filter Granted publication date: 20070207 License type: Exclusive license Record date: 20080901 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENCE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.5.30 TO 2014.5.29 Name of requester: JIAXING JIALI ELECTRONICS CO., LTD. Effective date: 20080901 |
|
| ASS | Succession or assignment of patent right |
Owner name: JIAXING JIALI ELECTRONICS CO., LTD. Free format text: FORMER OWNER: ZHEJIANG ZHENGYUAN ELECTRIC CO., LTD. Effective date: 20110216 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 314003 ZHENGYUAN SCIENCE AND TECHNOLOGY PARK, NO. 1, ZHENGYUAN ROAD, JIAXING CITY, ZHEJIANG PROVINCE TO: 314003 NO. 66, ZHENGYUAN ROAD, TANGHUI INDUSTRIAL PARK, DEVELOPMENT AREA, JIAXING CITY, ZHEJIANG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110216 Address after: 314003 No. 66, original road, pond Industrial Park, Jiaxing Development Zone, Zhejiang, China Patentee after: Jiaxing Jiali Electronic Co., Ltd. Address before: 314003, the original science and technology garden is 1, Jiaxing Road, Zhejiang Province Patentee before: Zhejiang Zhengyuan Electric Co., Ltd. |
|
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 314003 Jiaxing City, Zhejiang Province Economic Development Zone Yong Wui street is the original Road No. 66 Patentee after: Jiaxing Jiali Electronic Co., Ltd. Address before: 314003 No. 66, original road, pond Industrial Park, Jiaxing Development Zone, Zhejiang, China Patentee before: Jiaxing Jiali Electronic Co., Ltd. |
|
| CX01 | Expiry of patent term |
Expiration termination date: 20150815 Granted publication date: 20070207 |
|
| EXPY | Termination of patent right or utility model |