CN204481102U - A kind of TE mould dielectric filter - Google Patents
A kind of TE mould dielectric filter Download PDFInfo
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- CN204481102U CN204481102U CN201520207333.1U CN201520207333U CN204481102U CN 204481102 U CN204481102 U CN 204481102U CN 201520207333 U CN201520207333 U CN 201520207333U CN 204481102 U CN204481102 U CN 204481102U
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- window
- resonator
- dielectric
- mould
- filter
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Abstract
The utility model discloses a kind of TE mould dielectric filter, it comprises four dielectric resonators, wherein be communicated with by rectangular window between first medium resonator and second medium resonator, between first medium resonator and the 4th dielectric resonator and between the 3rd dielectric resonator and the 4th dielectric resonator, be communicated with by " L " shape window between second medium resonator and the 3rd dielectric resonator.The utility model does not use metallic elements such as flying bar, utilizes L shape window to adjust the coupled phase between TE mould dielectric resonant chamber, finally reaches and forms transmission zero at passband low frequency end, improve the stability of filter, reduce cost simultaneously.
Description
Technical field
The utility model belongs to art of microwave filters field in wireless communication field, is specifically related to a kind of TE mould dielectric filter.
Background technology
Along with the develop rapidly of wireless communication technology, the performance requirement of operator to filter is more and more higher, the TE mould dielectric filter of high q-factor is widely used, precipitous band external characteristic requires to use cross-coupling technique to form transmission zero simultaneously, generally be used as topological structure with the cross-linked form of three chamber cross-couplings or four chambeies, in order to produce the outer transmission zero of required band, coupling structure of intersecting needs to form phase difference, and for TE mould dielectric filter, because general window is capacitive coupling, when needs form transmission zero at low frequency end, then need to use unsettled metal parts, define inductive coupled when the field of metal parts cutting TE mould media peripheral, thus form 180 ° of phase differences, transmission zero is formed at filter passband low frequency end.Which needs the metal parts support of processing irregular metal parts and insulation separately, processing cost is higher, and when frequency is higher, dielectric resonator size diminishes, resonant cavity diminishes, the size of metal parts also can correspondingly reduce, and causes machining tolerance requirement higher, electrical characteristic also can seem more responsive.
Summary of the invention
For the deficiencies in the prior art, the purpose of this utility model is to provide one does not need metal parts can realize cross-linked filter.
For achieving the above object, the utility model have employed following technical scheme:
A kind of TE mould dielectric filter, it comprises four dielectric resonators, wherein be communicated with by rectangular window between first medium resonator and second medium resonator, between first medium resonator and the 4th dielectric resonator and between the 3rd dielectric resonator and the 4th dielectric resonator, be communicated with by " L " shape window between second medium resonator and the 3rd dielectric resonator.
As the further optimization of such scheme, the vertical window that described " L " shape window comprises close filter sidewall and the horizontal window be connected with vertical window.
Further, described " L " shape window also comprises the rectangular window be connected with horizontal window, for regulating coupling amount.
Further, the described vertical window degree of depth is greater than horizontal window.
Further, the width of described horizontal window is greater than the width of vertical window.
Compared with prior art, the beneficial effects of the utility model main manifestations is:
The utility model does not use metallic elements such as flying bar, utilizes L shape window to adjust the coupled phase between TE mould dielectric resonant chamber, finally reaches and forms transmission zero at passband low frequency end, improve the stability of filter, reduce cost simultaneously.
Accompanying drawing explanation
Fig. 1 is that the utility model one embodiment is without structural representation during cover plate.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, the utility model is more specifically described.
As shown in Figure 1, a kind of TE mould dielectric filter, it comprises four dielectric resonators, wherein be communicated with by rectangular window 5 between first medium resonator 1 and second medium resonator 2, between first medium resonator 1 and the 4th dielectric resonator 4 and between the 3rd dielectric resonator 3 and the 4th dielectric resonator 4, be communicated with by " L " shape window between second medium resonator 2 and the 3rd dielectric resonator 3.The vertical window 6 that described " L " shape window comprises close filter sidewall and the horizontal window 7 be connected with vertical window 6, in order to form the coupled mode contrary with rectangular window 5 phase place.Described " L " shape window also comprises the less rectangular window 8 be connected with horizontal window 7.Described vertical window 6 degree of depth is greater than horizontal window 7, and horizontal window 7 is positioned at below filter cover board.The width of described horizontal window 7 is greater than the width of vertical window 6.
The present embodiment entirety constitutes the filter of four resonance, dual transfer zero (each one of passband height low side), achieving the target forming passband low side transmission zero when not using hardware, improve the stability of filter.
Be understandable that; for those of ordinary skills; can be equal to according to the technical solution of the utility model and utility model design thereof and replace or change, deduce other combining structure, and all these be changed or replace the protection range that all should belong to the utility model claim.
Claims (5)
1. a TE mould dielectric filter, it is characterized in that, it comprises four dielectric resonators, wherein be communicated with by rectangular window between first medium resonator and second medium resonator, between first medium resonator and the 4th dielectric resonator and between the 3rd dielectric resonator and the 4th dielectric resonator, be communicated with by " L " shape window between second medium resonator and the 3rd dielectric resonator.
2. TE mould dielectric filter according to claim 1, is characterized in that, the vertical window that described " L " shape window comprises close filter sidewall and the horizontal window be connected with vertical window.
3. TE mould dielectric filter according to claim 2, is characterized in that, described " L " shape window also comprises the rectangular window be connected with horizontal window.
4. the TE mould dielectric filter according to Claims 2 or 3, is characterized in that, the described vertical window degree of depth is greater than horizontal window.
5. the TE mould dielectric filter according to Claims 2 or 3, is characterized in that, the width of described horizontal window is greater than the width of vertical window.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520207333.1U CN204481102U (en) | 2015-04-09 | 2015-04-09 | A kind of TE mould dielectric filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520207333.1U CN204481102U (en) | 2015-04-09 | 2015-04-09 | A kind of TE mould dielectric filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204481102U true CN204481102U (en) | 2015-07-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520207333.1U Expired - Fee Related CN204481102U (en) | 2015-04-09 | 2015-04-09 | A kind of TE mould dielectric filter |
Country Status (1)
| Country | Link |
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| CN (1) | CN204481102U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106631020A (en) * | 2017-01-04 | 2017-05-10 | 郴州功田电子陶瓷技术有限公司 | Preparation process of ceramic dielectric resonator for TE mode communication |
| CN114270623A (en) * | 2019-05-10 | 2022-04-01 | 株式会社Kmw | Composite filter assembly |
-
2015
- 2015-04-09 CN CN201520207333.1U patent/CN204481102U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106631020A (en) * | 2017-01-04 | 2017-05-10 | 郴州功田电子陶瓷技术有限公司 | Preparation process of ceramic dielectric resonator for TE mode communication |
| CN114270623A (en) * | 2019-05-10 | 2022-04-01 | 株式会社Kmw | Composite filter assembly |
| CN114270623B (en) * | 2019-05-10 | 2024-06-11 | 株式会社Kmw | Composite filter assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150715 |