CN203312430U - Hybrid broadband high-pass filter - Google Patents
Hybrid broadband high-pass filter Download PDFInfo
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- CN203312430U CN203312430U CN2012207427860U CN201220742786U CN203312430U CN 203312430 U CN203312430 U CN 203312430U CN 2012207427860 U CN2012207427860 U CN 2012207427860U CN 201220742786 U CN201220742786 U CN 201220742786U CN 203312430 U CN203312430 U CN 203312430U
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- substrate
- pass filter
- groove
- broadband high
- tube shell
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Abstract
The utility model discloses a hybrid broadband high-pass filter. The hybrid broadband high-pass filter comprises a substrate. The substrate is installed in a tube shell, a groove is formed in the bottom of the tube shell, a metal layer on the substrate which is located at a position corresponding to the groove in the bottom of the tube shell is corroded, and no direct contact surface exists between the substrate and the tube shell, so this is equivalent to adding an air layer between a dielectric layer and the ground, so that not only the dielectric thickness is increased, and but also the relative dielectric constant is reduced, so the capacitance of a hanging node is greatly reduced, the purpose of wider passband can be realized, the advantage of wider passband can be realized while reducing the size, and the advantage of easy debugging can be realized.
Description
Technical field
The utility model relates to the wide high pass filter of a kind of free transmission range, relates in particular to a kind of mixed type broadband high-pass filter.
Background technology
Along with the increase day by day of transinformation in communication system, require the bandwidth of communication equipment also more and more wider, thus filter is proposed to requirements at the higher level.Current high pass filter mainly realizes by suspend band line and lump form, and the lump mode filter has volume little in frequency when low, is easy to the characteristics of making and being convenient to debug, and applies wider.But because manufacture method is limit, be subjected to the impact of unsettled node, the high pass filter of lump type is difficult to realize than broad passband, has limited range of application; Passband is wider relatively for the band line structure although suspend, and volume is large when frequency is low, can't realize miniaturization.
Summary of the invention
The purpose of this utility model is to provide a kind of in smaller size smaller, to realize than the mixed type broadband high-pass filter of broad passband.
The purpose of this utility model is achieved through the following technical solutions:
Mixed type broadband high-pass filter of the present utility model, comprise substrate, and described substrate is arranged in shell, and the bottom of described shell is provided with groove, and on described substrate, the metal level of the position of the groove of corresponding described tube shell bottom is corroded.
By the technical scheme that above-mentioned the utility model provides, can be found out, the mixed type broadband high-pass filter that the utility model embodiment provides, because the bottom of shell is provided with groove, on substrate, the metal level of the position of the groove of corresponding described tube shell bottom is corroded, substrate and shell do not have direct contact surface, so just be equivalent to add air layer between dielectric layer and ground, both increased dielectric thickness, reduced again relative dielectric constant, greatly reduced the capacitance of unsettled node, reach the purpose that makes passband wider, can in smaller size smaller, realize than broad passband, and debugging is convenient.
The accompanying drawing explanation
Fig. 1 is the structural representation of substrate in the utility model embodiment;
Fig. 2 is the structural representation of shell in the utility model embodiment.
In figure: 1, substrate, 2, the position of the metal level that is corroded, 3, shell, 4, groove.
Embodiment
Below will be described in further detail the utility model embodiment.
Mixed type broadband high-pass filter of the present utility model, its preferably embodiment be:
Comprise substrate, described substrate is arranged in shell, and the bottom of described shell is provided with groove, and on described substrate, the metal level of the position of the groove of corresponding described tube shell bottom is corroded.
The degree of depth of described groove is that 0.8mm, width are less than 3mm, and the width of the metal level be corroded on described substrate is 3mm.
The width of described groove is 2.4mm.
Mixed type broadband high-pass filter of the present utility model, overcome lump type high pass passband narrower, suspend with the larger shortcoming of line style volume, be applied to the L section with lower frequency, both can realize miniaturization, can realize than broad passband again.
In when assembling, adopt the substrate back assembly method unsettled with encapsulation, namely when the processing shell, mill a groove that about 0.8mm is dark, 3mm is wide in tube shell bottom, circuit board (double sided board) adds the metal eroded man-hour with the groove correspondence position of tube shell bottom.Substrate and shell do not have direct contact surface, so just are equivalent to add air layer between dielectric layer and ground, have both increased dielectric thickness, have reduced again relative dielectric constant, have greatly reduced the capacitance of unsettled node, reach the purpose that makes passband wider.
Application the utility model, with lower frequency, more than the passband of high pass can reach ten frequencys multiplication, the volume band line that relatively suspends reduced approximately half in the L section.Can in smaller size smaller, realize than broad passband, and debugging is convenient.
Specific embodiment:
Based on this practical structure, designed and made the 11 rank chebyshev function high pass filters of a cut-off frequency 1GHz, free transmission range is 1GHz～12.5GHz, and in passband, fluctuation is in 1dB, and the passband standing wave is less than 1.8.
The above; it is only preferably embodiment of the utility model; but protection range of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement, within all should being encompassed in protection range of the present utility model.Therefore, protection range of the present utility model should be as the criterion with the protection range of claims.
Claims (3)
1. a mixed type broadband high-pass filter, is characterized in that, comprise substrate, described substrate is arranged in shell, and the bottom of described shell is provided with groove, and on described substrate, the metal level of the position of the groove of corresponding described tube shell bottom is corroded.
2. mixed type broadband high-pass filter according to claim 1, is characterized in that, the degree of depth of described groove is that 0.8mm, width are less than 3mm, and the width of the metal level be corroded on described substrate is 3mm.
3. mixed type broadband high-pass filter according to claim 2, is characterized in that, the width of described groove is 2.4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207427860U CN203312430U (en) | 2012-12-28 | 2012-12-28 | Hybrid broadband high-pass filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207427860U CN203312430U (en) | 2012-12-28 | 2012-12-28 | Hybrid broadband high-pass filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203312430U true CN203312430U (en) | 2013-11-27 |
Family
ID=49618609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012207427860U Expired - Lifetime CN203312430U (en) | 2012-12-28 | 2012-12-28 | Hybrid broadband high-pass filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203312430U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108649301A (en) * | 2018-04-13 | 2018-10-12 | 江苏硅华电子科技有限公司 | A kind of broadband MEMS interdigital filters and preparation method thereof |
-
2012
- 2012-12-28 CN CN2012207427860U patent/CN203312430U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108649301A (en) * | 2018-04-13 | 2018-10-12 | 江苏硅华电子科技有限公司 | A kind of broadband MEMS interdigital filters and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Hybrid broadband high-pass filter Effective date of registration: 20150120 Granted publication date: 20131127 Pledgee: Industrial Commercial Bank of China Ltd. Zhongguancun Beijing branch Pledgor: BEIJING ZHONGKE FEIHONG SCIENCE & TECHNOLOGY CO.,LTD. Registration number: 2015990000050 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131127 |
|
| CX01 | Expiry of patent term |