CN206497968U - A kind of medium comb filter - Google Patents
A kind of medium comb filter Download PDFInfo
- Publication number
- CN206497968U CN206497968U CN201720062209.XU CN201720062209U CN206497968U CN 206497968 U CN206497968 U CN 206497968U CN 201720062209 U CN201720062209 U CN 201720062209U CN 206497968 U CN206497968 U CN 206497968U
- Authority
- CN
- China
- Prior art keywords
- hole
- connecting hole
- resonance
- comb filter
- medium
- 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 - Fee Related
Links
Abstract
The utility model provides a kind of medium comb filter, its two ends has input/output port, at least include two dielectric resonators, each dielectric resonator is designed with resonance hole and the connecting hole being connected, the resonance hole of adjacent media resonator is connected by the connecting hole, and the input/output port is connected with the resonance hole.In a kind of medium comb filter that the utility model is provided, by setting connecting hole and resonance hole, coupling amount is effectively increased, so as to add bandwidth, the demand of actual use is met.
Description
Technical field
The utility model is related to filter field, more particularly to a kind of medium comb filter.
Background technology
Dielectric filter is low-loss, high-k, frequency-temperature coefficient and the thermal expansion using medium ceramic material
Coefficient is small, design and produce the features such as can bear high power, by the trapezoidal of several elongated resonators longitudinal plural serial stages or parallel connection
Railway superstructures.It is characterized in that insertion loss is small, resistance to power is good, narrow bandwidth, is widely used in portable phone, automobile telephone, nothing
In the equipment such as line earphone, wireless microphone, radio station, wireless phone and integrated duplexer.With the hair of science and technology
Exhibition, to the performance of dielectric filter also more and more higher, the coefficient of coup is the important performance indexes of wave filter, and the coefficient of coup is bigger,
The effect for representing coupling is better, represents that coupling amount is bigger, and bandwidth is also wider.
Dielectric filter traditional at present is technical scheme disclosed in the CN101179144A mainly used, such medium
The coefficient of coup of wave filter is relatively small, and coupling amount is also smaller, so as to cause narrower bandwidth, it is impossible to meet the need of actual wide bandwidth
Ask.
Therefore, how to improve the problem of dielectric filter turns into achievement urgent need to resolve.
Utility model content
The purpose of this utility model is to provide a kind of medium comb filter, to solve existing dielectric filter bandwidth
It is smaller the problem of can not meet actual demand.
A kind of medium comb filter, its two ends have input/output terminal, at least including two dielectric resonators, Mei Gejie
Matter resonator is designed with the resonance hole being connected and connecting hole, and the resonance hole of adjacent media resonator is connected by the connecting hole
Logical, the input/output port is connected with the resonance hole.
Optionally, the connecting hole is vertical with resonance hole is connected.
Optionally, it is directly connected to each other logical between the connecting hole.
Optionally, connecting hole and resonance hole are circular hole or square hole.
Optionally, the connection hole length between the resonance hole of the adjacent media resonator is less than single resonance hole length.
Optionally, the inner surface of the connecting hole has metal level.
Optionally, the metal level is silver layer.
Optionally, outermost two dielectric resonators only open up connecting hole a side, remaining dielectric resonator
Two opposite flanks open up connecting hole.
In a kind of medium comb filter that the utility model is provided, by setting connecting hole and resonance hole, effectively
Coupling amount is increased, so as to add bandwidth, the demand of actual use is met.
Brief description of the drawings
Fig. 1 is the cross-sectional view of medium comb filter of the present utility model；
Fig. 2 is the structural representation of first medium resonator；
Fig. 3 is the structural representation of second medium resonator；
Fig. 4 is the structural representation of the 3rd dielectric resonator；
Fig. 5 is the HFSS analogous diagrams of traditional dielectric filter；
Fig. 6 is the HFSS analogous diagrams of medium comb filter provided by the utility model.
Label in figure：1- first medium resonators；2- second medium resonators；The dielectric resonators of 3- the 3rd；8- inputs are defeated
Go out end；9- input/output terminals；The first resonance of 11- hole；The connecting holes of 12- first；The second resonance of 22- hole；The connecting holes of 23- second；24-
Second connecting hole；The resonance holes of 33- the 3rd；34 the 3rd connecting holes.
Embodiment
Below in conjunction with the drawings and specific embodiments to the utility model proposes a kind of medium comb filter make further
Describe in detail.According to following explanation and claims, advantages and features of the present utility model will become apparent from.It should be noted that,
Accompanying drawing is using very simplified form and uses non-accurately ratio, only to it is convenient, lucidly aid in illustrating this practicality
The purpose of new embodiment.
The utility model provides a kind of medium comb filter, and its two ends has input/output terminal, at least including two Jie
Matter resonator, each dielectric resonator is designed with the resonance hole being connected and connecting hole, and the resonance hole of adjacent media resonator leads to
Cross the connecting hole to be connected, the input/output port is connected with the resonance hole.
As shown in figure 1, the medium comb filter includes first medium resonator 1, second medium resonator 2 and the 3rd
Dielectric resonator 3, shown first medium resonator 1 has the first resonance hole 11, and second medium resonator 2 has the second resonance hole
22, the 3rd dielectric resonator 3 has the 3rd resonance hole 33, and first medium resonator 1 has the first connecting hole 12, described first
Connecting hole 12 is connected with the first resonance hole 11, and second medium resonator 2 has two the second connecting holes 23 and 24, two second
Connecting hole 23 and 24 is connected with the second resonance hole 22, first connecting hole 12 be connected with the second connecting hole 23 so that
The first resonance hole 11 is connected with the second resonance hole 22, and the 3rd dielectric resonator 3 has the 3rd connecting hole 34, the described 3rd
Connecting hole 34 is connected with the 3rd resonance hole 33, and second connecting hole 24 is connected so that described with the 3rd connecting hole 34
Second resonance hole 22 is connected with the 3rd resonance hole 33.
It is understood that the dielectric resonator can also have more, embodiment illustrated in fig. 1 illustrate only 3
Individual situation, those skilled in the art can be according to the quantity for being actually needed flexibly addition dielectric resonator.
First connecting hole 12 is vertical with the resonance hole 22 of the first resonance hole 11 and second, second connecting hole 23
Vertical with the second resonance hole 22 with 24, the 3rd connecting hole 34 is vertical with the 3rd resonance hole 33.The first resonance hole
11st, the second resonance hole 21, the 3rd resonance hole 31, the first connecting hole 12, the second connecting hole 23,24 and the 3rd connecting hole 34 are all side
Hole or circular hole, actual production process because circular hole process it is more convenient, therefore it is preferred that use circular hole.
First connecting hole 12 is identical with the radius of second connecting hole 23,24 and the 3rd connecting hole 34, described
First resonance hole 11, the second resonance hole 21 are identical with the radius in the 3rd resonance hole 31, the first resonance hole 11, the and of the second resonance hole 21
The equal length in the 3rd resonance hole 31.Connection hole length between the resonance hole of the adjacent media resonator is less than single resonance
Hole length, i.e., described first connecting hole 12 is less than the length in the first resonance hole 11, institute plus the length of second connecting hole 23
Belong to the length that the second connecting hole 24 is less than resonance hole 11 plus the length of the 3rd connecting hole 34..
The inner surface of the connecting hole has metal level, and the metal is preferably silver-colored or other electric conductivities
Metal, such as copper, aluminium.
Affiliated first medium resonator 1, the dielectric resonator 3 of second medium resonator 2 and the 3rd all have open circuit surface and closed
In road surface, corresponding diagram 1, the open circuit surface is all above, and the closed circuit face is all below, i.e., described open circuit surface is in the same side, institute
Closed circuit face is stated in the same side.Those skilled in the art's it is understood that the upper and lower relation in the open circuit surface and closed circuit face
It is relative, merely just by taking Fig. 1 as an example, illustrates the position relationship in open circuit surface and closed circuit face.
The size of the coupling amount can be adjusted by changing the position of connecting hole and the length of connecting hole, the connection
Pitch-row is more remote from closed circuit face, and coupling amount is bigger, and the length of the connecting hole is smaller, and coupling amount is bigger.
The two ends of the medium comb filter have input/output terminal 8 and 9, the input/output terminal 8 and resonance hole 11
It is connected, the input/output terminal 9 is connected with resonance hole 33, the input/output terminal is that can do input can also do defeated
Go out end.The input/output terminal controls coupling amount by the way of tap coupler using the length of coupling line.
Accordingly, the utility model also provides a kind of manufacture method of medium comb filter, comprises the following steps：
S1：At least two above-mentioned dielectric resonators are provided；
S2：Media adhesive is coated into side where All Media resonator connecting hole；
S3：All sides for scribbling media adhesive are bonded together successively two-by-two, made all
Connecting hole is connected；
S4：Open up input/output port at the two ends of the medium comb filter bonded, the input/output port with
The resonance hole is connected.
The system of medium comb filter provided by the utility model is illustrated below in conjunction with Fig. 2, Fig. 3 and Fig. 4
Make method：
3 above-mentioned dielectric resonators 1,2,3 are provided, the wherein dielectric resonator 3 of first medium resonator 1 and the 3rd only has
One side has connecting hole, and the second medium resonator 2 all has connecting hole, the first medium two opposite flanks
The side of resonator 1 has the first connecting hole 12, is connected with the first resonance hole 11, and coats in the side medium bonding
Agent；The side of 3rd dielectric resonator 3 has the 3rd connecting hole 34, is connected with the 3rd resonance hole 33, and in the side
Coat media adhesive in face；There are the second connecting hole 23 and 24, the second connecting hole in the opposite flank of second medium resonator 2
23 and 24 are connected with the second resonance hole 22, and coat media adhesive in the side, then press dielectric resonator 1,2,3
Order place, the side for having media adhesive is relative two-by-two, be bonded together, make the first connecting hole 12 and with the second connecting hole
23 connections, the second connecting hole 24 is connected with the 3rd connecting hole 34, forms medium comb filter.Finally again in medium comb filtering
The two ends of device open up input/output port, and the input/output port is connected with the resonance hole, ultimately form as shown in Figure 1
Structure.
The beneficial effects of the utility model will be illustrated by experimental data below.It should be noted that the utility model
The medium interdigital filter and conventional filter provided is made up of same dielectric constant material, humorous with identical size
Shake hole size it is also consistent.
Fig. 5 is HFSS (the high-frequency structure simulator high-frequency structures of traditional dielectric filter
Simulation program) analogous diagram, wherein abscissa represents the spacing (mm) in resonance hole, and ordinate represents the coefficient of coup, as shown in Figure 5,
When pitch of holes is 4mm, coefficient of coup maximum can reach 0.039.
Fig. 6 is the HFSS analogous diagrams of medium comb filter provided by the utility model, and wherein abscissa represents connection
The height mm (i.e. apart from the distance in closed circuit face) in hole, ordinate represents the coefficient of coup, and the spacing in its resonance hole is 6mm, and such as Fig. 6 can
Know, when connecting hole is highly 8mm, coefficient of coup maximum can reach 0.48, and the maximum coefficient of coup increases compared to traditional dielectric filter
It is big 11 times；And when as shown in Figure 5, the spacing in conventional filter resonance hole is 6mm, coupling amount only has 0.013, and passes through
Fig. 6 understands that the minimum coefficient of coup of medium comb filter provided by the utility model is 0.09, is also increased than conventional filter
6 times.It can be seen that the medium comb filter coefficient of coup provided by the utility model is increased perhaps compared to traditional dielectric filter
Many times.
In summary, dielectric resonator provided by the utility model can have effective increase coupling amount, so as to increase band
Width, meets actual use demand.
Embodiment provided by the utility model is by taking three dielectric resonators as an example, it is to be understood that comprising three with
The embodiment of upper dielectric resonator is also within protection domain of the present utility model.
Foregoing description is only the description to the utility model preferred embodiment, not to any limit of the utility model scope
Calmly, the those of ordinary skill in the utility model field does according to the disclosure above content any change, modification, belonging to right will
Seek the protection domain of book.
Claims (8)
1. a kind of medium comb filter, its two ends have input/output port, it is characterised in that at least humorous including two media
Shake device, and each dielectric resonator is designed with the resonance hole being connected and connecting hole, and the resonance hole of adjacent media resonator passes through institute
State connecting hole to be connected, the input/output port is connected with the resonance hole.
2. a kind of medium comb filter as claimed in claim 1, it is characterised in that the connecting hole is vertical with resonance hole to be connected
Connect.
3. a kind of medium comb filter as claimed in claim 1, it is characterised in that phase directly with one another between the connecting hole
Connection.
4. a kind of medium comb filter as claimed in claim 1, it is characterised in that connecting hole and the resonance hole is circular hole
Or square hole.
5. a kind of medium comb filter as claimed in claim 1, it is characterised in that the resonance of the adjacent media resonator
Connection hole length between hole is less than single resonance hole length.
6. a kind of medium comb filter as claimed in claim 1, it is characterised in that the inner surface of the connecting hole has gold
Belong to layer.
7. a kind of medium comb filter as claimed in claim 6, it is characterised in that the metal level is silver layer.
8. a kind of medium comb filter as claimed in claim 1, it is characterised in that outermost two dielectric resonators are only
Connecting hole is opened up a side, two opposite flanks of remaining dielectric resonator open up connecting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720062209.XU CN206497968U (en) | 2017-01-18 | 2017-01-18 | A kind of medium comb filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720062209.XU CN206497968U (en) | 2017-01-18 | 2017-01-18 | A kind of medium comb filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206497968U true CN206497968U (en) | 2017-09-15 |
Family
ID=59803450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720062209.XU Expired - Fee Related CN206497968U (en) | 2017-01-18 | 2017-01-18 | A kind of medium comb filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206497968U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106785256A (en) * | 2017-01-18 | 2017-05-31 | 苏州富电通讯有限公司 | A kind of medium comb filter |
| CN109037865A (en) * | 2018-09-28 | 2018-12-18 | 西南应用磁学研究所 | A kind of novel medium interdigital filter |
-
2017
- 2017-01-18 CN CN201720062209.XU patent/CN206497968U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106785256A (en) * | 2017-01-18 | 2017-05-31 | 苏州富电通讯有限公司 | A kind of medium comb filter |
| CN106785256B (en) * | 2017-01-18 | 2021-01-15 | 苏州富电通讯有限公司 | Medium comb filter |
| CN109037865A (en) * | 2018-09-28 | 2018-12-18 | 西南应用磁学研究所 | A kind of novel medium interdigital filter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206497968U (en) | A kind of medium comb filter | |
| CN206864596U (en) | A kind of transition structure of millimeter wave differential microstrip to rectangular waveguide | |
| CN105846024B (en) | A kind of SIW double-layer cavity filter | |
| CN102610883A (en) | 90-MHz low-insertion-loss micro low pass filter | |
| CN206541910U (en) | Ceramic dielectric filter | |
| CN205377805U (en) | Partly lump microwave bandwidth -limited circuit and wave filter | |
| CN103811832A (en) | Filter, receiver, transmitter and transceiver | |
| CN103117427A (en) | Wideband mini low temperature co-fired ceramic balance filter | |
| CN109273807A (en) | A kind of novel four function filter-divider of high performance wideband | |
| CN104409809B (en) | Changeable bandpass and band-rejection filter based on parallel coupled line | |
| CN103972619A (en) | UHF wave band high-performance band-pass filter | |
| CN103248334A (en) | Piezoelectric acoustic resonator and piezoelectric acoustic filter | |
| CN204927460U (en) | Improve out of band rejection's broad band filter | |
| CN109888442A (en) | A kind of four mould medium bandpass filters | |
| CN105552507A (en) | Novel-structure chip-type wideband coupler | |
| CN104409811B (en) | A kind of changeable plane bandpass and band-rejection filter | |
| CN209104333U (en) | A kind of rich font structure microstrip line low-pass filter | |
| CN106785256A (en) | A kind of medium comb filter | |
| CN208970718U (en) | A kind of resonator and cavity body filter | |
| CN111342181A (en) | Dielectric waveguide filter | |
| CN204205000U (en) | A kind of LTCC filtering Ba Lun based on resonator | |
| CN201408828Y (en) | LTCC image frequency suppression band-pass filter | |
| CN201408829Y (en) | LTCC harmonic suppression band-pass filter | |
| CN210006871U (en) | wide stop band low-pass filter | |
| CN207743368U (en) | A kind of microstrip coupled dielectric filter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20170915 Termination date: 20220118 |