CN206532856U - Suspended stripline bandstop filter and its communication cavity device - Google Patents
Suspended stripline bandstop filter and its communication cavity device Download PDFInfo
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- CN206532856U CN206532856U CN201720090479.1U CN201720090479U CN206532856U CN 206532856 U CN206532856 U CN 206532856U CN 201720090479 U CN201720090479 U CN 201720090479U CN 206532856 U CN206532856 U CN 206532856U
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- cavity
- resonator
- bandstop filter
- suspended stripline
- resonant column
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Abstract
The utility model provides a kind of suspended stripline bandstop filter.The suspended stripline bandreject filtering includes cavity and the cover plate of dress is mutually covered with cavity；Lengthwise open cavity is provided with the cavity, in the lengthwise open cavity at least two resonators arranged successively are provided with along longitudinally, each resonator is provided with resonant column, and the medium substrate being electrically connected with the resonant column is provided between the resonator and the cover plate；The medium substrate is equipped with above transmission line conduction band, the medium substrate relative to realize capacity coupled resonance plate provided with being overlapped with the transmission line conduction band close to the resonator side, and the resonance plate makes electrical contact with the resonant column.The superperformance such as the suspended stripline bandstop filter can realize that bandwidth of rejection is wide, degree of suppression is high, Q values are high, Insertion Loss is small, at the same take into account small volume, it is lightweight the features such as.In addition, the utility model additionally provides a kind of communication cavity device of application suspended stripline bandstop filter.
Description
Technical field
The utility model is related to communication radio frequency technical field, specifically, and the utility model is related to a kind of suspended stripline
Bandstop filter and its communication cavity device.
Background technology
Bandstop filter refers to that extremely low water can be decayed to by most of frequency deals, but by the frequency component of some scopes
Flat wave filter.Bandstop filter has with the characteristics of wide, degree of suppression is high, loss is low, is widely used in communication and broadband industry
It is the core component of communication system in business field.
Existing bandstop filter, such as suspended stripline bandstop filter, Insertion Loss is than larger；And the resistance filter of microstripline strip
Ripple device, then volume and weight is than larger, it is impossible to realize the compatible of the indexs such as Insertion Loss and volume.
Therefore, the technical scheme that a kind of energy solves at least one above-mentioned problem is needed badly in the industry.
Utility model content
The purpose of this utility model aims to provide a kind of suspended stripline bandstop filter and its communication cavity device.
To achieve these goals, the utility model provides following technical scheme：
A kind of suspended stripline bandstop filter, including cavity and the cover plate that dress is mutually covered with cavity；It is provided with the cavity
Lengthwise open cavity, being respectively formed with connectivity port, cavity to be provided with cavity longitudinally two ends is used to realize two connection ends
The transmission line conduction band of the electric connection of mouth；
At least two resonators arranged successively are provided with along longitudinally in the lengthwise open cavity, each resonator is all provided with
Resonant column is equipped with, the medium substrate being electrically connected with the resonant column is provided between the resonator and the cover plate；
The transmission line conduction band is layed in the medium substrate and set above the resonator side, the medium substrate
Have and overlapped with the transmission line conduction band relatively to realize capacity coupled resonance plate, the resonance plate connects with the resonant column electricity
Touch；
The each resonant column suspension of correspondence has tuning screw, the tuning screw and the resonant column noncontact on the cover plate
Connection.
Specifically, the resonance plate is made electrical contact with by the plated through-hole on medium substrate and the resonant column.
Specifically, the plated through-hole is fixedly connected with the resonance plate.
Specifically, the resonant column is wire resonant column.
Specifically, metal partion (metp) is provided between the resonator and resonator.
Specifically, the resonator is coaxial resonant cavity.
Specifically, the resonance plate is to etch in the metal level on medium substrate.
Specifically, the resonance plate is any one in disc, bow tie, radial line or any a variety of.
Specifically, the resonant column is electrically connected with the cavity bottom.
Meanwhile, the utility model additionally provides a kind of communication cavity device.The communication cavity device includes above-mentioned suspension band
Shape line bandstop filter.
Compared with prior art, scheme of the present utility model has advantages below：
1. in the utility model, the suspended stripline bandstop filter is provided between the resonator and the cover plate
The medium substrate being electrically connected with the resonant column, replaces air flat board to couple, realizes bigger coupling with medium substrate coupling
Electric capacity, is conducive to the reduction of wave filter volume, bandwidth of rejection increase.In addition, media plate coupling uniformity is more preferably, more conducively add
Work is produced.
2. in the utility model, the resonant column that the resonator of the suspended stripline bandstop filter is used is humorous for wire
Shake post, can significantly improve the Q values of suspended stripline bandstop filter, improves the suspended stripline bandstop filter and suppresses
Degree so that the bandwidth of rejection of wave filter is wider.Meanwhile, the wire resonant column small volume, lightweight, production cost is low.
3. in the utility model, the resonator is coaxial resonant cavity, can significantly improve suspended stripline bandreject filtering
The Q values of device make it that bandwidth of rejection is wider, and implementation is more flexible.
Brief description of the drawings
The above-mentioned and/or additional aspect of the utility model and advantage from the following description of the accompanying drawings of embodiments will
Become substantially and be readily appreciated that, wherein：
Fig. 1 is a kind of three-dimensional structure diagram of a kind of embodiment of suspended stripline bandstop filter in the utility model；
Fig. 2 is the structural representation of Fig. 1 longitudinal cross-section；
Fig. 3 is the structural representation of Fig. 1 transverse interface；
Fig. 4 is a kind of three-dimensional structure diagram of medium substrate in the utility model；
Fig. 5 is Fig. 4 schematic rear view；
Fig. 6 is the three-dimensional structure diagram of another medium substrate in the utility model, is which basically illustrated located at medium substrate
On resonance plate of different shapes.
Embodiment
Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element or element with same or like function are represented to same or similar label eventually.Below by ginseng
The embodiment for examining accompanying drawing description is exemplary, is only used for explaining the utility model, and can not be construed to of the present utility model
Limitation.
As shown in figure 1, the utility model provides a kind of suspended stripline bandstop filter 100.The suspended stripline band
Resistance wave filter 100 can take into account the performance indications such as Insertion Loss and volume, with small volume, it is lightweight the features such as, while Insertion Loss can be realized
Small, power capacity is big, Q values height, passband and the wide superperformance of bandwidth of rejection.In addition, the suspended stripline bandstop filter 100
It is simple in construction, be conducive to batch production.
Another to combine Fig. 2, Fig. 3, the suspended stripline bandstop filter 100 includes cavity 2 and the cover plate of dress is mutually covered with cavity 2
1；Lengthwise open cavity 21 is provided with the cavity 2, connectivity port 11, cavity 21 are respectively formed with the longitudinally two ends of cavity 21
The interior transmission line conduction band 6 for being provided with the electric connection for being used to realize two connectivity ports 11.The cover plate 1 by screw 7 with it is described
Cavity 2 is fixedly connected, to form the confined space of signal transmission.
In the lengthwise open cavity 21 at least two resonators 3 arranged successively are provided with along longitudinally.The resonator 3
Metal partion (metp) 9 is provided between resonator 3, and the resonator 3 is by multiple metal partion (metp)s 9 be arrangeding in parallel and the bottom of cavity 2
Plate and side plate connection are limited and gone out.Wherein, the metal partion (metp) 9 as resonator 3 a part and to the resonator 3 with it is humorous
Shake and split between chamber 3, the coupling of adjacent resonators 3 is reduced as far as possible, improve the electric property of wave filter.Preferably, institute
It is the equal square chamber of the bottom surface length of side to state resonator 3, in order to arrange chamber, improves space availability ratio, optimizes space layout.In addition, institute
It is more preferably coaxial resonant cavity to state resonator 3, and its coaxial cavity resonator constituted is different from traditional a quarter
Wave resonator, its Q value is higher, passband and bandwidth of rejection are wider, and the mode of realization is more flexible, is conducive to setting for space utilization
Meter and layout.
In addition, being provided with resonant column 4 in each resonator 3.The resonant column 4 is wire resonant column, can substantially be carried
The Q values of high resonator, so as to improve the degree of suppression of suspended stripline wave filter 100.Meanwhile, the wire resonant column small volume,
Lightweight, production cost is low.Preferably, the size of the resonant column 4 is identical, is conducive to the space layout in phase shifter.
Accordingly, the cover plate 1 is provided with the mounting hole (not indicating, blind to listen) that accommodating tuning screw 10 is passed through, the peace
Correspondence each resonant column 4 in dress hole is opened up, and the tuning screw 10 is suspended at every through the mounting hole correspondence on the cover plate 1
On individual resonant column 4, the tuning screw 10 remains that noncontact is connected with the resonant column 4.By adjusting the tuning spiral shell
Bar 10, can be achieved the regulation of the resonant frequency of resonator constituted to resonator 3 and resonant column 4, so that by the resonator
Resonant frequency is controlled in stopband frequency range.
Continuing with Fig. 2, Fig. 3 is combined, it is provided with and is electrically connected with the resonant column 4 between the resonator 3 and the cover plate 1
Medium substrate 5.The medium substrate 5 fixes the top for being suspended in the resonator 3, and it replaces traditional air flat board to realize
Capacitive coupling, can realize bigger coupled capacitor and broader bandwidth of rejection, advantageously reduce the volume of wave filter.In addition, institute
State the coupling of medium substrate 5 uniformity more preferably, be conducive to production and processing.
Position limiting structure (not indicating, similarly hereinafter) can be provided with the cavity 2, it is described humorous for controlling medium substrate 5 to be suspended in
Shake the top of chamber 3.Meanwhile, screwed hole (not indicating, similarly hereinafter) is provided with the medium substrate 5, the cover plate 1 leads to the cavity 2
When crossing screw and being fixedly connected, the screw 7 is screwed in accommodating on screwed hole, with cavity 2 by the mounting hole on cover plate 1
Hole (not indicating, similarly hereinafter) is threadedly coupled, while the cover plate 1 is fixedly connected with the cavity 2, by the medium substrate 5
On the position limiting structure for being fixed on the cavity 2.As described above, the resonator 3 and resonant column 4 constitute resonator.And it is described humorous
Shake and form electric capacity between post 4 and the cover plate 1, the three of the medium substrate 5, the electric capacity is the equivalent capacity of the resonator；And
The formation inductance of the resonant column 4 being electrically connected with the bottom of cavity 2, the inductance is the equivalent inductance of the resonator.
More specifically, the transmission line conduction band 6 is layed in the medium substrate 5 close to the side of resonator 3.It is described to pass
It is the suspended mictrostrip more than or equal to 50 ohm that defeated line conduction band 6, which is characterized impedance, and it helps to make the suspended stripline band
Resistance wave filter 100 realizes the superperformance that Insertion Loss is small, power capacity is bigger.
Incorporated by reference to Fig. 4 to Fig. 6, further, the top of medium substrate 5 is provided with overlaps phase with the transmission line conduction band 6
To realize capacity coupled resonance plate 8, the resonance plate 8 makes electrical contact with the resonant column 4.The resonance plate 8 is passed with described
Facing area between defeated line conduction band 6, can be selected according to the size of coupled capacitor.Preferably, the resonance plate 8 is by being situated between
Plated through-hole 51 on matter substrate 5 is made electrical contact with the resonant column 4, and now the plated through-hole 51 is fixed with the resonance plate 8
Connection, the mode that welding or screw can be used to fix is fixed in succession.
Further, the resonance plate 8 is to etch in the metal level on medium substrate 5.The resonance plate 8 and medium base
The region that plate 5 is fixed flexibly is changed by the metal level etched in medium substrate 5, is more easy to widen the resistance filter of suspended stripline band
The bandwidth of rejection of ripple device 100.In this case, the resonant column 4 can carry out electricity with the resonance plate 8 of the bottom of medium substrate 5 and connect
Touch, that is, resonant column 4 is fixed on medium substrate 5 by the way of welding or screw are fixed.
Continuing with Fig. 4 and Fig. 6 is combined, the resonance plate 8 is any one in disc, bow tie, radial line
Or it is any a variety of.It is understood that the resonance plate 8 that the suspended stripline bandstop filter 100 is used is not limited to
A kind of shape of fixation, it can use the resonance plate 8 of various shapes simultaneously.The resonance plate 8 is not limited to any shape, institute
The selection of shape of resonance plate 8 is stated according to the resistance of the resonant frequency of time, coupled capacitor and suspended stripline bandstop filter 100
Band bandwidth optimum selecting.
Meanwhile, the utility model additionally provides a kind of communication cavity device.The communication cavity device includes above-mentioned suspension band
Shape line bandstop filter 100.
Described above is only some embodiments of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improve and
Retouching also should be regarded as protection domain of the present utility model.
Claims (10)
1. a kind of suspended stripline bandstop filter, including cavity and the cover plate that dress is mutually covered with cavity；Provided with vertical in the cavity
Elongated cavity, being respectively formed with connectivity port, cavity to be provided with cavity longitudinally two ends is used to realize two connectivity ports
Electric connection transmission line conduction band, it is characterised in that：
At least two resonators arranged successively are provided with along longitudinally in the lengthwise open cavity, each resonator is provided with
Resonant column, is provided with the medium substrate being electrically connected with the resonant column between the resonator and the cover plate；
The transmission line conduction band is layed in the medium substrate close to the resonator side, and the medium substrate is away from resonator
Side is provided with to be overlapped relatively to realize capacity coupled resonance plate, the resonance plate and the resonant column with the transmission line conduction band
Electrical contact；
The each resonant column suspension of correspondence has tuning screw on the cover plate, and the tuning screw connects with the resonant column noncontact
Connect.
2. suspended stripline bandstop filter according to claim 1, it is characterised in that the resonance plate passes through medium base
Plated through-hole on plate makes electrical contact with the resonant column.
3. suspended stripline bandstop filter according to claim 2, it is characterised in that the plated through-hole with it is described humorous
The disk that shakes is fixedly connected.
4. suspended stripline bandstop filter according to claim 1, it is characterised in that the resonant column is wire resonance
Post, its one end is fixed on resonator bottom, and the other end is fixed on medium substrate.
5. suspended stripline bandstop filter according to claim 1, it is characterised in that the resonator and resonator it
Between be provided with metal partion (metp), the resonator be coaxial resonant cavity.
6. suspended stripline bandstop filter according to claim 1, it is characterised in that the resonance plate is to etch Jie Yu
Metal level on matter substrate.
7. suspended stripline bandstop filter according to claim 1, it is characterised in that the resonance plate be disc,
In bow tie, radial line any one or it is any a variety of.
8. suspended stripline bandstop filter according to claim 1, it is characterised in that the resonant column and the cavity
Bottom is electrically connected with.
9. suspended stripline bandstop filter according to claim 1, it is characterised in that the resonance plate is led with transmission line
The facing area of band can carry out selection setting according to coupled capacitor size.
10. a kind of communication cavity device, it is characterised in that including the suspended stripline described in any one in claim 1 to 9
Bandstop filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720090479.1U CN206532856U (en) | 2017-01-22 | 2017-01-22 | Suspended stripline bandstop filter and its communication cavity device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720090479.1U CN206532856U (en) | 2017-01-22 | 2017-01-22 | Suspended stripline bandstop filter and its communication cavity device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206532856U true CN206532856U (en) | 2017-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720090479.1U Expired - Fee Related CN206532856U (en) | 2017-01-22 | 2017-01-22 | Suspended stripline bandstop filter and its communication cavity device |
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| Country | Link |
|---|---|
| CN (1) | CN206532856U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107046157A (en) * | 2017-01-22 | 2017-08-15 | 京信通信系统（中国）有限公司 | Suspended stripline bandstop filter and its communication cavity device |
| CN115911793A (en) * | 2023-03-01 | 2023-04-04 | 成都威频科技有限公司 | Up-down coupling ultra-wideband high-isolation adjustable band-pass filter |
-
2017
- 2017-01-22 CN CN201720090479.1U patent/CN206532856U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107046157A (en) * | 2017-01-22 | 2017-08-15 | 京信通信系统（中国）有限公司 | Suspended stripline bandstop filter and its communication cavity device |
| CN107046157B (en) * | 2017-01-22 | 2019-09-06 | 京信通信系统（中国）有限公司 | Suspended stripline bandstop filter and its communication cavity device |
| CN115911793A (en) * | 2023-03-01 | 2023-04-04 | 成都威频科技有限公司 | Up-down coupling ultra-wideband high-isolation adjustable band-pass filter |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170929 Termination date: 20200122 |
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| CF01 | Termination of patent right due to non-payment of annual fee |