CN104218278A - Ceramic dielectric waveguide filter with grooves - Google Patents
Ceramic dielectric waveguide filter with grooves Download PDFInfo
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- CN104218278A CN104218278A CN201410471252.2A CN201410471252A CN104218278A CN 104218278 A CN104218278 A CN 104218278A CN 201410471252 A CN201410471252 A CN 201410471252A CN 104218278 A CN104218278 A CN 104218278A
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- groove
- ceramic dielectric
- medium block
- dielectric waveguide
- waveguide filter
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Abstract
The invention relates to a ceramic dielectric waveguide filter with grooves. The ceramic dielectric waveguide filter comprises a medium block formed by a ceramic material, the surface of the medium block is provided with a metal coating, the two ends of the medium block are respectively connected with connectors, a plurality of parallel grooves are symmetrically distributed in one pair of sides of the medium block, and each groove is respectively orthogonal with the central axis of the medium block. The grooves of the ceramic dielectric waveguide filter located on two sides can reduce interference between resonators and improve the relative ground connection effect, and under the conditions of no additional shielding measure, large out-of-band rejection can be achieved. Compared with existing ceramic dielectric filters undergoing shielding measures, the ceramic dielectric waveguide filter can meet the high out-of-band rejection effect, and any shielding measure does not need to be increased.
Description
Technical field
The present invention relates to a kind of ceramic dielectric filter, especially relate to a kind of ceramic dielectric waveguide filter with groove.
Background technology
Along with the fast development of wireless mobile telecommunication technology, more and more higher to the performance requirement of the equipment such as communication base station, repeater, wherein, filter has good band as frequency-selecting device bandwidth frequency planted agent and leads to, but should have good rejection ability for the radiofrequency signal beyond bandwidth.
In currently available technology, traditional ceramic dielectric filter is the integral type medium block be made up of ceramic material, and the outer surface of this medium block is all more smooth.
But for above-mentioned ceramic dielectric filter, it is comparatively easy Design and manufacture will to adjust by the frequency of frequency band, but has higher requirements for Out-of-band rejection, is not easy to meet.In the past in order to improve Out-of-band rejection performance, local outside medium block was usually needed to install metallic shield additional to improve Out-of-band rejection performance.Even if having employed this additional shielding measure, but Out-of-band rejection is effect improved still undesirable.
Therefore, the technical barrier that the effective ceramic dielectric filter of a kind of Out-of-band rejection is this area how is designed.
Summary of the invention
The object of this invention is to provide a kind of ceramic dielectric waveguide filter with groove, to solve the technical problem improving Out-of-band rejection effect.
In order to solve the problems of the technologies described above, the invention provides a kind of ceramic dielectric waveguide filter with groove, comprise: the medium block be made up of ceramic material, and this medium block surface is provided with the coat of metal, the two ends of described medium block are connected to connector, a pair side of described medium block is symmetrically distributed with some parallel grooves, and each groove is orthogonal with the central axis of medium block respectively.
In order to improve Out-of-band rejection effect further, be positioned at the groove at least three of a side.
Further, in three grooves, the groove depth of the first, the 3rd groove is identical, and the groove depth of the second groove is greater than the groove depth of the first groove.
Further, in order to better improve Out-of-band rejection effect, described second groove is 3:1 with the groove depth ratio of the first groove.
Technique scheme of the present invention has the following advantages compared to existing technology: the groove of the ceramic dielectric waveguide filter in the present invention in both sides can reduce the interference between resonator, and increase relative to ground effect, make under the condition without any additional shielding measure, just can realize larger Out-of-band rejection.Ceramic dielectric filter of the present invention, compared with the ceramic dielectric filter of existing additional shielding measure, can meet larger Out-of-band rejection effect, and does not need to increase any shielding measure.
Accompanying drawing explanation
In order to make content of the present invention be more likely to be clearly understood, below basis specific embodiment and by reference to the accompanying drawings, the present invention is further detailed explanation, wherein
Fig. 1 is the front view of ceramic dielectric waveguide filter of the present invention;
Fig. 2 shows the vertical view of ceramic dielectric waveguide filter of the present invention.
Wherein, medium block 1, connector 2, the coat of metal 100, first groove 101, second groove 102, the 3rd groove 103.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly understand, below in conjunction with embodiment also with reference to accompanying drawing, the present invention is described in more detail.Should be appreciated that, these describe just exemplary, and do not really want to limit the scope of the invention.In addition, in the following description, the description to known features and technology is eliminated, to avoid unnecessarily obscuring concept of the present invention.
Fig. 1 shows the front view of ceramic dielectric waveguide filter of the present invention.
Fig. 2 shows the vertical view of ceramic dielectric waveguide filter of the present invention.
As depicted in figs. 1 and 2, a kind of ceramic dielectric waveguide filter with groove, comprise: the medium block 1 be made up of ceramic material, and this medium block 1 surface is provided with the coat of metal 100, the two ends of described medium block 1 are connected to connector 2, a pair side of described medium block 1 is symmetrically distributed with some parallel grooves (101,102,103), each groove (101,102,103) is orthogonal with the central axis A of difference medium block 1.Concrete, the described coat of metal 100 can silver-plated, gold-plated, copper facing or aluminize; Wherein, silver-plated and copper facing is more easily implemented, and effective.Described connector 2 is two terminals, wherein, in one be signal input terminal, another is signal output terminal, and send terminal for connecting transtation mission circuit, receiving terminal is for connecting receiving circuit.Described central axis represents with A in fig. 1 and 2, and as can be seen from the figure, the trend of groove is orthogonal with central axis A.
Further, the groove (101,102,103) at least three of a side is positioned at.Concrete, in three grooves, the groove depth of the first groove 101, the 3rd groove 103 is identical, and the groove depth of the second groove 102 is greater than the groove depth of the first groove.Preferably, described second groove is 3:1 with the groove depth ratio of the first groove, to improve Out-of-band rejection effect further.
Should be understood that, above-mentioned embodiment of the present invention only for exemplary illustration or explain principle of the present invention, and is not construed as limiting the invention.Therefore, any amendment made when without departing from the spirit and scope of the present invention, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.In addition, claims of the present invention be intended to contain fall into claims scope and border or this scope and border equivalents in whole change and modification.
Claims (4)
1. the ceramic dielectric waveguide filter with groove, it is characterized in that, comprise: the medium block be made up of ceramic material, and this medium block surface is provided with the coat of metal, the two ends of described medium block are connected to connector, a pair side of described medium block is symmetrically distributed with some parallel grooves, and each groove is orthogonal with the central axis of medium block respectively.
2. ceramic dielectric waveguide filter according to claim 1, is characterized in that, is positioned at the groove at least three of a side.
3. ceramic dielectric waveguide filter according to claim 2, is characterized in that, in three grooves, the groove depth of the first, the 3rd groove is identical, and the groove depth of the second groove is greater than the groove depth of the first groove.
4. ceramic dielectric waveguide filter according to claim 3, is characterized in that, described second groove is 3:1 with the groove depth ratio of the first groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410471252.2A CN104218278A (en) | 2014-09-16 | 2014-09-16 | Ceramic dielectric waveguide filter with grooves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410471252.2A CN104218278A (en) | 2014-09-16 | 2014-09-16 | Ceramic dielectric waveguide filter with grooves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104218278A true CN104218278A (en) | 2014-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410471252.2A Pending CN104218278A (en) | 2014-09-16 | 2014-09-16 | Ceramic dielectric waveguide filter with grooves |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4431977A (en) * | 1982-02-16 | 1984-02-14 | Motorola, Inc. | Ceramic bandpass filter |
| CN101340014A (en) * | 2008-08-01 | 2009-01-07 | 苏州艾福电子通讯有限公司 | Ceramic dielectric filter and duplexer having slots |
| US20090231064A1 (en) * | 2006-08-04 | 2009-09-17 | Dielectric Laboratories, Inc. | Wideband dielectric waveguide filter |
| CN202259605U (en) * | 2010-05-17 | 2012-05-30 | Cts公司 | Dielectric waveguide filter with structure used for bandwidth adjustment |
| CN103797639A (en) * | 2011-07-18 | 2014-05-14 | Cts公司 | Dielectric waveguide filter with direct coupling and alternative cross-coupling |
| CN204088529U (en) * | 2014-09-16 | 2015-01-07 | 张家港保税区灿勤科技有限公司 | A kind of ceramic dielectric waveguide filter with groove |
-
2014
- 2014-09-16 CN CN201410471252.2A patent/CN104218278A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4431977A (en) * | 1982-02-16 | 1984-02-14 | Motorola, Inc. | Ceramic bandpass filter |
| US20090231064A1 (en) * | 2006-08-04 | 2009-09-17 | Dielectric Laboratories, Inc. | Wideband dielectric waveguide filter |
| CN101340014A (en) * | 2008-08-01 | 2009-01-07 | 苏州艾福电子通讯有限公司 | Ceramic dielectric filter and duplexer having slots |
| CN202259605U (en) * | 2010-05-17 | 2012-05-30 | Cts公司 | Dielectric waveguide filter with structure used for bandwidth adjustment |
| CN103797639A (en) * | 2011-07-18 | 2014-05-14 | Cts公司 | Dielectric waveguide filter with direct coupling and alternative cross-coupling |
| CN204088529U (en) * | 2014-09-16 | 2015-01-07 | 张家港保税区灿勤科技有限公司 | A kind of ceramic dielectric waveguide filter with groove |
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Application publication date: 20141217 |