CN207320281U - Wave filter - Google Patents
Wave filter Download PDFInfo
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- CN207320281U CN207320281U CN201721370037.9U CN201721370037U CN207320281U CN 207320281 U CN207320281 U CN 207320281U CN 201721370037 U CN201721370037 U CN 201721370037U CN 207320281 U CN207320281 U CN 207320281U
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Abstract
The utility model provides a kind of wave filter.The wave filter includes at least two resonator groups, is connected between two neighboring resonator group by termination power, and each resonator group includes the first resonator and the second resonator, capacitive coupling between the first resonator and the second resonator.The wave filter can reduce volume.
Description
Technical field
It the utility model is related to short-wave communication tedhnology field, more particularly to a kind of wave filter.
Background technology
With the fast development of the communication technology, microwave communication system (such as radar and communication system) is to performance of filter
It is required that higher and higher, these wave filters need to realize that high q-factor, low insertion loss, Out-of-band rejection decline the spy such as precipitous, small
Property.Wave filter of the prior art, tends not to meet these requirements, and conventional filter is in the case of arrowband, the damage of wave filter
Consumption can be very high；On the other hand, if conventional filter expects higher performance, this, which results in volume, further increases.
Utility model content
In view of this, the utility model embodiment provides a kind of wave filter, big to solve wave filter volume in the prior art
The problem of.
The utility model embodiment provides a kind of wave filter, it includes at least two resonator groups, two neighboring resonator
Connected between group by termination power, each resonator group includes the first resonator and the second resonator, the first resonator and
Capacitive coupling between two resonators.
Alternatively, wave filter further includes the first substrate and second substrate being stacked, the first resonance of each resonator group
Device is set on the first substrate, and the second resonator of each resonator group is arranged on second substrate.
Alternatively, resonator group is two or more, and along the length direction of first substrate, each resonator group is spaced successively to be set
Put.
Alternatively, the first resonator includes：First resonant rod, the first resonant rod are arranged on the first surface of first substrate
On；And/or first ground hole, the first ground hole is set on the first substrate, and runs through first substrate, and the first resonant rod passes through
The earthing pole connection of the second surface of first ground hole and first substrate.
Alternatively, the first resonator is multiple, and is spaced successively along the length direction of first substrate, multiple first resonators
Set, the first ground hole of adjacent two the first resonant rods is located at different ends.
Alternatively, the second resonator includes：Second resonant rod, the second resonant rod are arranged on the first surface of second substrate
On, and the projection of the second resonant rod on the first substrate is at least partly overlapped with the first resonant rod；And/or second ground hole,
Two ground holes are arranged on second substrate, and run through first substrate and second substrate, the second resonant rod by the second ground hole with
The earthing pole connection of the second surface of first substrate.
Alternatively, the second resonator is multiple, and is spaced successively along the length direction of second substrate, multiple second resonators
Set, the second ground hole of each second resonant rod is located at one end away from the first ground hole of the second resonant rod.
Alternatively, the first resonant rod includes the first cross bar and head rod, and the first cross bar is two and is arranged at intervals, the
One connecting rod connects the first end of two the first cross bars；Second resonant rod includes the second cross bar and the second connecting rod, the second cross bar
For two and it is arranged at intervals, the second connecting rod connects the second end of two the second cross bars, and the second end of the second cross bar is away from the
One end of one connecting rod.
Alternatively, wave filter further includes input feed circuit and output feed circuit, inputs feed circuit and first humorous
Device group of shaking connects, and output feed circuit is connected with last resonator group.
Alternatively, it is one of perceptual feed circuit, capacitive feed circuit and mixing feed circuit to input feed circuit；With/
Or, output feed circuit is one of perceptual feed circuit, capacitive feed circuit and mixing feed circuit.
A kind of wave filter that the utility model embodiment provides includes at least two resonator groups, two neighboring resonator group
Between connected by termination power, each resonator group includes the first resonator and the second resonator, the first resonator and second
Capacitive coupling between resonator.Since wave filter includes at least two resonator groups, and the first resonator of each resonator group
And second capacitive coupling between resonator, insertion loss can be reduced with the Q values of boostfiltering device, reduce volume, make structure more
It is compact, and improve performance.
Brief description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, drawings in the following description are
Some embodiments of the utility model, for those of ordinary skill in the art, without creative efforts,
Other attached drawings can also be obtained according to these attached drawings.
Fig. 1 is the principle signal for the wave filter that a kind of hybrid coupled feed-in that the utility model embodiment provides feeds out mode
Figure；
Fig. 2 is the principle signal for the wave filter that a kind of inductive coupling feed-in that the utility model embodiment provides feeds out mode
Figure；
Fig. 3 is the plan structure for the wave filter that a kind of inductive coupling feed-in that the utility model embodiment provides feeds out mode
Schematic diagram；
Fig. 4 is the first humorous of the wave filter that a kind of inductive coupling feed-in that the embodiment of the utility model provides feeds out mode
Shake the structure diagram of device and first substrate；
Fig. 5 is the second humorous of the wave filter that a kind of inductive coupling feed-in that the embodiment of the utility model provides feeds out mode
Shake the structure diagram of device and second substrate；
Fig. 6 is the three-dimensional knot for the wave filter that a kind of inductive coupling feed-in that the embodiment of the utility model provides feeds out mode
Structure schematic diagram；
Fig. 7 is the three-dimensional quick-fried of the wave filter that a kind of inductive coupling feed-in that the embodiment of the utility model provides feeds out mode
Fried structure diagram；
Fig. 8 is that the principle for the wave filter that a kind of capacitive coupling feed-in that the embodiment of the utility model provides feeds out mode is shown
It is intended to；
Fig. 9 is the vertical view knot for the wave filter that a kind of capacitive coupling feed-in that the embodiment of the utility model provides feeds out mode
Structure schematic diagram；
Figure 10 is the first of the wave filter that a kind of capacitive coupling feed-in that the embodiment of the utility model provides feeds out mode
The structure diagram of resonator and first substrate；
Figure 11 is the second of the wave filter that a kind of capacitive coupling feed-in that the embodiment of the utility model provides feeds out mode
The structure diagram of resonator and second substrate；
Figure 12 is the solid for the wave filter that a kind of capacitive coupling feed-in that the embodiment of the utility model provides feeds out mode
Structure diagram；
Figure 13 is the explosion for the wave filter that a kind of capacitive coupling feed-in that the embodiment of the utility model provides feeds out mode
Structure diagram；
Figure 14 is bowing for the wave filter that another inductive coupling feed-in that the embodiment of the utility model provides feeds out mode
Depending on structure diagram；
Figure 15 is the wave filter first that another inductive coupling feed-in that the embodiment of the utility model provides feeds out mode
The overlooking the structure diagram of substrate and the first resonator；
Figure 16 is the wave filter second that another inductive coupling feed-in that the embodiment of the utility model provides feeds out mode
The overlooking the structure diagram of substrate and the second resonator；
Figure 17 is the vertical of the wave filter that another inductive coupling feed-in that the embodiment of the utility model provides feeds out mode
Body structure diagram；
Figure 18 is the vertical of the wave filter that another inductive coupling feed-in that the embodiment of the utility model provides feeds out mode
Body configuration schematic diagram.
Description of reference numerals：
1st, feed circuit is inputted；2nd, resonator group；21st, the first resonator；211st, the first resonant rod；212nd, the first ground connection
Hole；22nd, the second resonator；221st, the second resonant rod；222nd, the second ground hole；28th, first substrate；29th, second substrate；3rd, export
Feed circuit；41st, input coupling capacitance；42nd, output coupling capacitor.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, those of ordinary skill in the art's all other embodiments obtained without creative efforts, belongs to
The scope of the utility model protection.
As shown in Figure 1, embodiment according to the present utility model, wave filter includes at least two resonator groups 2, two neighboring
Being connected between resonator group 2 by termination power, each resonator group 2 includes the first resonator 21 and the second resonator 22, the
Capacitive coupling between one resonator 21 and the second resonator 22.
Since wave filter includes at least two resonator groups 2, and the first resonator 21 and second of each resonator group 2 is humorous
Shake capacitive coupling between device 22, compared to general filter, in identical resonance frequency, volume can be greatly reduced.Adjacent two
Connected between a resonator group 2 by termination power, insertion loss can be reduced with the Q values of boostfiltering device, reduce volume, make
Structure is compacter, and improves performance.
In the present embodiment, wave filter is Multilayer filter, i.e., spatially it includes the multilayer of stacking, multilayer here
More than or equal to 2 layers.For example, wave filter further includes the first substrate 28 and second substrate 29 being stacked, each resonator group 2
First resonator 21 is arranged on first substrate 28, and the second resonator 22 of each resonator group 2 is arranged on second substrate 29, is made
Resonator group 2 the first resonator 21 and the second resonator 22 form the structure being stacked.By setting the first base
Plate 28 and second substrate 29 can realize the installation carrying to the first resonator 21 and the second resonator 22, and 28 He of first substrate
Second substrate 29 is stacked so that coupling is formed between the first resonator 21 and the second resonator 22 of same resonator group 2
Capacitance, realizes and capacitive coupling connection is formed between the first resonator 21 and the second resonator 22.Pass through capacitive coupling, the first resonance
Resonator group is formed between 21 and second resonator 22 of device, compared to general filter, in identical resonance frequency, can be subtracted significantly
Small size.
In order to meet filtering demands, resonator group 2 is two or more, and along the length direction of first substrate 28, each resonance
Device group 2 is arranged at intervals successively.Hybrid coupled is formed so between two neighboring resonator group 2 (as shown in Figure 1, passing through inductance
With capacitance hybrid coupled) mode, due between resonator group by way of this hybrid coupled, so as to effectively improve filtering
The Q values of device, reduce insertion loss, are especially suitable for the relatively narrow wave filter (i.e. narrow band filter) of relative bandwidth, and due to this
Resonator group is made of two resonators being spatially laminated, so the volume of the wave filter of such a resonator composition is compared to existing
Half can be reduced for some wave filters, volume is with the obvious advantage.
In the present embodiment, as shown in Figure 1, wave filter is by signal input and output feed circuit (K1, K2) and N number of resonator
Group is formed, and signal input part IN is connected by inputting feed circuit K1 with first resonator group 2, and feed circuit K1 is by L0 for input
(inductance) and C0 (capacitance) are formed, and input feed circuit K1 can use three kinds of feed forms：Capacitive C0 coupling, perception L0 couple and
Capacitive C0, perception L0 hybrid coupleds, are illustrated that capacitive C0 and perception L0 hybrid coupleds in Fig. 1.
In the present embodiment, wave filter is made of two-layered medium substrate, i.e. two-layered medium substrate is stacked.Resonator
Group 2 is made of the first resonator 21 on layer dielectric substrate and the second resonator 22 in upper layer medium substrate,
The short at one end of first resonator 21 and the second resonator 22, the other end are connected by capacitance (C11 in Fig. 1), the first resonator
21 and second produce capacitive C11 couplings between resonator 22.Similarly, N number of resonator group side by side of wave filter is under
Resonator N2 compositions on resonator N1 and upper layer medium substrate on layer medium substrate, wherein resonator N1 resonators N2's
One end is short-circuit, and the other end is connected by capacitance CNN, and capacitive CNN couplings are produced between resonator N1 resonators N2.
Connected between previous resonator group 2 and next resonator group 2 by feed circuit.Specifically for example, previous
Resonator group 2 by the termination power that inductance L1 and/or capacitance C1 are formed with the latter resonator group 2 by being connected.Specific coupling
Mode can be with capacitive coupling, last resonator group 2 of inductive coupled or hybrid coupled by exporting feed circuit K2 and filtering
The output terminal OUT of device is connected, and output feed circuit K2 is made of L00 and C00, there is three kinds of feed forms：Capacitive C00 couplings, sense
Property L00 coupling and capacitive C00, perception L00 hybrid coupleds.
The structure of the first resonator 21 and the second resonator 22 is described in detail below as follows：
As shown in Figures 4 to 6, the first resonator 21 includes the first resonant rod 211, can also include the first ground hole 212.
It should be noted that the first resonator 21 not necessarily includes the first ground hole 212.Wherein, the first resonant rod 211 is arranged on first
On the first surface (first surface is the surface towards second substrate 29 of first substrate 28) of substrate 28.First ground hole 212
It is arranged on first substrate 28, and runs through first substrate 28, the first resonant rod 211 passes through the first ground hole 212 and first substrate
The earthing pole connection of 28 second surface.First ground hole 212 is used to connect the first resonant rod 211 and earthing pole.Connect first
Inductance is formed at ground hole 212, capacitance is formed between the first resonant rod 211 and ground.
Second resonator 22, which includes the second resonant rod 221, can also include the second ground hole 222.Similarly, second is humorous
The device 22 that shakes also not necessarily includes the second ground hole 222.Second resonant rod 221 is arranged on the first surface of second substrate 29,
And second projection of the resonant rod 221 on first substrate 28 at least partly overlapped with the first resonant rod 211.Second resonant rod 221
At least partly overlapped between the first resonant rod 211, ensure to pass through capacitance coupling between the first resonator 21 and the second resonator 22
Close.
Second ground hole 222 is arranged on second substrate 29, and runs through first substrate 28 and second substrate 29, the second resonance
By the second surface of the second ground hole 222 and first substrate 28, (second surface is second substrate 29 away from the first base to bar 221
The surface of plate 28) earthing pole connection.Second ground hole 222 is used to connect the second resonant rod 221 and earthing pole.
In the present embodiment, since resonator group 2 is multiple, the first resonator 21 is multiple, and along first substrate
28 length direction, multiple first resonators 21 are arranged at intervals successively, the first ground hole of adjacent two the first resonant rods 211
212 are located at different ends.
Second resonator 22 is multiple, and is spaced successively along the length direction of second substrate 29, multiple second resonators 22
Set, the second ground hole 222 of each second resonant rod 221 is located at one away from the first ground hole 212 of the second resonant rod 221
End.Such first resonant rod, 211 and second resonant rod 221 forms interdigital structure.Certainly, in other embodiments, first
211 and second resonant rod 221 of resonant rod can be other structures, include but not limited to pectination, pectination and interdigital mixing row
Row mode etc..
Alternatively, the first resonant rod 211 can be flat or other shapes.For example, the first resonant rod 211
Including the first cross bar and head rod, the first cross bar is two and is arranged at intervals, and head rod connects two the first cross bars
First end, so form similar the first U-shaped resonant rod 211.This U-shaped resonant rod except with U-shaped wave filter in itself
Outside advantage, it is not necessary to ground hole, cost is lower.
Second resonant rod 221 can be flat or other shapes.For example, the second resonant rod 221 includes second
Cross bar and the second connecting rod, the second cross bar is two and is arranged at intervals, and the second connecting rod connects the second end of two the second cross bars,
The second end of second cross bar is one end away from head rod, so forms similar the second U-shaped resonant rod 221.This
Two resonant rods 221, which equally have, is not required ground hole, the lower effect of cost.
In the present embodiment, wave filter further include input feed circuit 1 and output feed circuit 3, input feed circuit with
First resonator group 2 connects, and output feed circuit is connected with last resonator group 2.
It is one of perceptual feed circuit, capacitive feed circuit and mixing feed circuit to input feed circuit.Output feed electricity
Road is one of perceptual feed circuit, capacitive feed circuit and mixing feed circuit.Input feed circuit and output feed circuit can
To select as needed, for example, feed-in, feed out energy it is larger when, perceptual feed circuit can be selected.
Below to being described in detail using the wave filter of different feed circuits：
As shown in Figures 2 to 7, the wave filter of the present embodiment feed-in and is fed out, resonator group 2 by the way of inductive coupled
Between high q-factor narrow-band filtering realized by hybrid coupled mode.
As shown in Figures 6 and 7, it illustrates the filter construction model built on two-layered medium substrate, which can
To be divided into four layers, including two layer medium (first substrate 28 and second substrate 29) and double layer of metal lines (resonant rod), the first base
Plate 28 is medium substrate, and first substrate 28 can be conventional ceramic substrate, and surface makes metal wire (first using conductor material
Resonant rod 211) and the first ground hole 212 is opened up, metal layer can be set in the first ground hole 212, for example, it is gold-plated etc..
Second substrate 29 is also medium substrate, it is arranged on the top of first substrate 28, it can be the materials such as PI or BCB,
Selecting these materials to make second substrate 29 helps to reduce the thickness of second substrate 29, reduces wave filter volume, realizes small-sized
Change.Similarly, metal wire (the second resonant rod 221) is made using conductor material on the surface of second substrate 29, and second
The second ground hole 222 is made on substrate 29, the second ground hole 222 passes through second substrate 29 and first substrate 28 so that second is humorous
The bar 221 that shakes is connected with earthing pole.
As shown in figure 3, wave filter further includes input line (input line formed input feed circuit 1) and output line, (this is defeated
Outlet forms output feed circuit 3).The input terminal of input line is the input terminal of wave filter, output terminal and first resonator group 2
It is connected, wherein resonator group 2 is by 22 groups of the second resonator on the first resonator 21 and second substrate 29 on first substrate 28
Into the first resonator 21 is made of the first resonant rod 211 and the first ground hole 212.First resonant rod 211 is in first substrate 28
Surface, is connected by the first ground hole 212 with the earthing pole at 28 back side of first substrate.Second resonator 22 is by the second resonant rod
221 and second ground hole 222 form, the second resonant rod 221 is passed through by the second ground hole 222 on the surface of second substrate 29
Second substrate 29 and first substrate 28, and be connected with the earthing pole at 28 back side of first substrate.Resonator in wave filter is by humorous
Shake bar and ground hole composition, and resonant rod on the surface of first substrate 28 and second substrate 29, passes through ground hole and first respectively
28 back side of substrate is connected.
Previous resonator group 2 is connected by way of hybrid coupled with the latter resonator group 2, each resonator group 2
Comprising the first resonator 21 and the second resonator 22 between be connected by capacitively coupled mode.Last resonator group 2
It is connected with output line, is fed out by inductive coupled mode.
As shown in Fig. 8 to Figure 13, wave filter is using capacitively coupled mode feed-in and feeds out, by mixing coupling between resonator
Conjunction mode realizes high q-factor narrow-band filtering.
As shown in Figures 12 and 13, it illustrates a kind of filter construction model built on two-layered medium substrate.Its with
One of difference of previous wave filter is, the wave filter of the present embodiment is by input line, input coupling capacitance 41, output line, defeated
Go out coupled capacitor 42 and N number of resonator group 2 is formed.
The input terminal of transmission line is the input terminal of wave filter, and output terminal passes through input coupling capacitance 41 and first resonator
Group 2 is connected.Wherein the structure of resonator group 2 can be identical with the wave filter in previous embodiment, can also be with previous embodiment
In wave filter it is different, in the present embodiment, the structure of resonator group 2 is identical with the wave filter in previous embodiment, resonator
Connection mode between group 2 is also identical with previous embodiment, therefore no longer its structure is repeated.
Last resonator group 2 is connected through output coupling capacitor 42 with output line.
As shown in Figure 14 to 18, a kind of its wave filter for showing feed-in by the way of inductive coupled, feeding out.Wave filter
High q-factor narrow-band filtering is realized by hybrid coupled mode between resonator group 2.
As shown in FIG. 17 and 18, which can be divided into four layers, including two layer medium (first substrate 28 and second substrate
29) with double layer of metal lines (resonant rod), first substrate 28 is medium substrate, and first substrate 28 can be conventional ceramic substrate,
Surface makes metal wire (the first resonant rod 211) using conductor material.
Second substrate 29 is also medium substrate, it is arranged on the top of first substrate 28, it can be the materials such as PI or BCB,
Selecting these materials to make second substrate 29 helps to reduce the thickness of second substrate 29, reduces wave filter volume, realizes small-sized
Change.Similarly, metal wire (the second resonant rod 221) is made using conductor material on the surface of second substrate 29.
The resonator group 2 of the wave filter in addition to the shape of resonant rod is different from previous embodiment, other structures and
Set position identical with previous embodiment, therefore same section is repeated no more.In the present embodiment, each resonator group 2 is wrapped
Include the first resonant rod 211 and the second resonant rod 221.And first resonant rod 211 be U-shaped like structure, i.e. the first resonant rod 211 wraps
Include spaced two cross bars and connect the connecting rod of the first end of two cross bars, such first resonant rod 211 forms one
U-shaped with opening.The structure of second resonant rod 221 can be identical with the structure of the first resonant rod 211, can not also be same.
In the present embodiment, both are identical.
Wave filter in the present embodiment is sandwich construction, it is possible to achieve miniaturization, and connect by being set on medium substrate
Ground hole, utilize ground hole produce inductance, it is possible to achieve high q-factor arrowband, thus meet wave filter needs high q-factor, low insertion loss,
Out-of-band rejection declines the demand such as precipitous, small.
Device embodiment described above is only schematical, wherein the unit illustrated as separating component can
To be or may not be physically separate, some or all of module therein can be selected according to the actual needs
Realize the purpose of this embodiment scheme.Those of ordinary skill in the art are not in the case where paying performing creative labour, you can with
Understand and implement.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that：
It can still modify the technical solution described in foregoing embodiments, or which part technical characteristic is carried out etc.
With replacement；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the utility model technology
The spirit and scope of scheme.
Claims (10)
- A kind of 1. wave filter, it is characterised in that including at least two resonator groups (2), the two neighboring resonator group (2) it Between connected by termination power, each resonator group (2) includes the first resonator (21) and the second resonator (22), described Capacitive coupling between first resonator (21) and second resonator (22).
- 2. wave filter according to claim 1, it is characterised in that the wave filter further includes the first substrate being stacked (28) it is arranged on second substrate (29), the first resonator (21) of each resonator group (2) on the first substrate (28), The second resonator (22) of each resonator group (2) is arranged on the second substrate (29).
- 3. wave filter according to claim 2, it is characterised in that the resonator group (2) is two or more, and along described The length direction of first substrate (28), each resonator group (2) are arranged at intervals successively.
- 4. the wave filter according to Claims 2 or 3, it is characterised in that first resonator (21) includes：First resonant rod (211), first resonant rod (211) are arranged on the first surface of the first substrate (28)；With/ Or,First ground hole (212), first ground hole (212) are arranged on the first substrate (28), and through described the One substrate (28), first resonant rod (211) pass through first ground hole (212) and the first substrate (28) second The earthing pole connection on surface.
- 5. wave filter according to claim 4, it is characterised in that first resonator (21) is multiple, and along described The length direction of first substrate (28), multiple first resonators (21) are arranged at intervals successively, adjacent two described first First ground hole (212) of resonant rod (211) is located at different ends.
- 6. wave filter according to claim 4, it is characterised in that second resonator (22) includes：Second resonant rod (221), second resonant rod (221) are arranged on the first surface of the second substrate (29), and Projection of second resonant rod (221) on the first substrate (28) and first resonant rod (211) at least partly weight Close；And/orSecond ground hole (222), second ground hole (222) are arranged on the second substrate (29), and through described the One substrate (28) and second substrate (29), second resonant rod (221) pass through second ground hole (222) and described first The earthing pole connection of the second surface of substrate (28).
- 7. wave filter according to claim 6, it is characterised in that second resonator (22) is multiple, and along described The length direction of second substrate (29), multiple second resonators (22) are arranged at intervals successively, each second resonant rod (221) the second ground hole (222) is located at one end of remote first ground hole (212) of second resonant rod (221).
- 8. wave filter according to claim 6, it is characterised in thatFirst resonant rod (211) includes the first cross bar and head rod, and first cross bar is two and is arranged at intervals, The head rod connects the first end of two first cross bars；Second resonant rod (221) includes the second cross bar and the second connecting rod, and second cross bar is two and is arranged at intervals, Second connecting rod connects the second end of two second cross bars, and the second end of second cross bar is away from described first One end of connecting rod.
- 9. wave filter according to claim 1, it is characterised in that the wave filter further include input feed circuit (1) and Feed circuit (3) is exported, the input feed circuit is connected with first resonator group (2), the output feed circuit It is connected with resonator group (2) last described.
- 10. wave filter according to claim 9, it is characterised in that the input feed circuit is perceptual feed circuit, holds Property feed circuit and mixing one of feed circuit；And/or the output feed circuit is perceptual feed circuit, capacitive feed electricity One of road and mixing feed circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721370037.9U CN207320281U (en) | 2017-10-23 | 2017-10-23 | Wave filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721370037.9U CN207320281U (en) | 2017-10-23 | 2017-10-23 | Wave filter |
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| Publication Number | Publication Date |
|---|---|
| CN207320281U true CN207320281U (en) | 2018-05-04 |
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ID=62382266
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721370037.9U Active CN207320281U (en) | 2017-10-23 | 2017-10-23 | Wave filter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107658532A (en) * | 2017-10-23 | 2018-02-02 | 石家庄创天电子科技有限公司 | Wave filter |
| CN113839163A (en) * | 2021-09-28 | 2021-12-24 | 西安理工大学 | Face-to-face structure miniaturized three-dimensional hairpin filter adopting TSV (through silicon via) technology |
-
2017
- 2017-10-23 CN CN201721370037.9U patent/CN207320281U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107658532A (en) * | 2017-10-23 | 2018-02-02 | 石家庄创天电子科技有限公司 | Wave filter |
| CN113839163A (en) * | 2021-09-28 | 2021-12-24 | 西安理工大学 | Face-to-face structure miniaturized three-dimensional hairpin filter adopting TSV (through silicon via) technology |
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