CN106356600A - Signal transmission device - Google Patents
Signal transmission device Download PDFInfo
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- CN106356600A CN106356600A CN201510416167.0A CN201510416167A CN106356600A CN 106356600 A CN106356600 A CN 106356600A CN 201510416167 A CN201510416167 A CN 201510416167A CN 106356600 A CN106356600 A CN 106356600A
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- coupling
- waveguide
- cavity
- transmitting apparatus
- signal transmitting
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- 230000008054 signal transmission Effects 0.000 title abstract 2
- 230000008878 coupling Effects 0.000 claims abstract description 69
- 238000010168 coupling process Methods 0.000 claims abstract description 69
- 238000005859 coupling reaction Methods 0.000 claims abstract description 69
- 230000005540 biological transmission Effects 0.000 claims abstract description 12
- 230000001105 regulatory effect Effects 0.000 claims description 16
- 230000005684 electric field Effects 0.000 claims description 9
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- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001808 coupling effect Effects 0.000 description 1
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- WABPQHHGFIMREM-BKFZFHPZSA-N lead-212 Chemical compound [212Pb] WABPQHHGFIMREM-BKFZFHPZSA-N 0.000 description 1
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Abstract
The invention provides a signal transmission device which comprises a waveguide and a coupled resonator filter. A first coupling window is formed in the waveguide which is configured to transmit received signals; the coupled resonator filter comprises resonant cavities in two lines identical in number, the resonant cavity at the first end is configured to be connected with a coaxial transmission line, the resonant cavity at the second end is provided with a second coupling window formed therein, the resonant cavity is configured to be coupled to the waveguide through the first and second coupling windows, and the resonant cavity at the second end shares one volume with the waveguide. By the above mode, energy transferring (coupling) as required is realized through connection between the coupled resonator filter and the outer filter, and inherent frequency of the resonant cavities cannot be affected.
Description
Technical field
The present invention has connection to coupled resonator filter with regard to filter field, more particularly, to one kind
The signal transmitting apparatus of the waveguide of ripple device.
Background technology
Resonant cavity band-pass filter plays important role in a communications system, and direct shadow
Ring and arrive communication quality.Wireless communication technology constantly develops, resonant cavity band-pass filter will by with
To realize the transmission of more power signal.
When waveguide resonant cavity band filter has coaxial (tem pattern) port and one
During waveguide type port, if it is used for transmitting microwave signal, it will produce some and frequency load
And/or keep the problem of the input/output coupling correlation of approximate constant.When so-called collapsible filter
When ripple device topological structure is implemented, especially its have two groups of equal numbers (such as every group be 3
Individual) resonator cavity when, or the line with a coaxial port and waveguide port as shown in Figure 1
During property topological structure, the above-mentioned problem being previously mentioned will be especially relevant with following aspect: (a)
It is connected with the frequency load of the end resonator cavity of waveguide port, but this kind of load will reduce resonator cavity
Cut-off frequency；(b) keep on the tunable reference filter given the input of approximate constant/
Output coupling, and need not special adjusting apparatus
The current technical scheme being used for solving these problems generally has strict requirements to resonator cavity,
Or the performance of itself of wave filter can be affected.Therefore, need the filtering with good coupling effect badly
Device assembly.
Content of the invention
For problem above, it is contemplated that not changing the feelings of the natural resonance frequency of end resonator cavity
Under condition, produce the required coupling of the waveguide to attachment for the wave filter.
The present invention proposes a kind of signal transmitting apparatus, comprising: waveguide, and it has and is formed at it
On the first coupling window, and be configured to transmit received signal；Coupled resonator is filtered
Ripple device, it includes the equal number of resonator cavity of two row, and wherein first end resonator cavity is configured to even
Connect coaxial transmission line, and the second end resonator cavity has the second coupling window being formed thereon, institute
State the second end resonator cavity and be configured to described first, second coupling window coupled to described ripple
Lead, so that described second end resonator cavity and described waveguide share a volume.
Preferably, the size of described first coupling window and described second coupling window determines and is suitable for
The frequency range of wherein transmission.
Preferably, described first coupling window is formed at first jiao of described waveguide, and described
Second coupling window is formed at corresponding with described first jiao the of described coupled resonance cavity filter
At two jiaos.
Preferably, described first coupling window and described second coupling window are adjustable, to adjust
State the magnetic field intensity at the second end resonator cavity.
Preferably, described waveguide also includes: cavity；At least two detached regulating bolts, its
In described cavity, for by precession or screw out at least one regulating bolt adjust described
Electric field intensity at second end resonator cavity.
Preferably, each regulating bolt is used for adjusting the letter at least partly different frequency ranges
Number.
Preferably, described waveguide is additionally included in three on the bottom side of described cavity along centrage distribution
Individual separate regulating bolt.
Preferably, described frequency range is determined by the distance between each two adjuster screw.
Preferably, described second coupling window is l shape.
Preferably, first of described second coupling window be formed on described second coupling strong before
The top of wall, and second of described second coupling window be formed on described second coupling strong
The top of side wall.
By technical scheme it is achieved that passing through to adjust coupled resonance cavity filter with outward
Connection between portion's waveguide, and then realize required energy transmission (coupling), without affecting
The natural frequency of end resonator cavity.
Brief description
After description by reference to the specific embodiment of the present invention given by drawings below,
It is better understood with the present invention, and other objects of the present invention, details, feature and advantage will
Become more fully apparent.In the accompanying drawings:
Fig. 1 shows the schematic diagram of linear waveguide wave filter；
Fig. 2 shows the signal transmitting apparatus including waveguide resonant cavity wave filter；
Fig. 3 shows the front view of signal transmitting apparatus in Fig. 2；
Fig. 4 shows the side view of signal transmitting apparatus in Fig. 2；
Fig. 5 shows the distribution of three regulating bolts.
Specific embodiment
It is more fully described the preferred implementation of the disclosure below with reference to accompanying drawings.Although accompanying drawing
In show the preferred implementation of the disclosure, however, it is to be appreciated that can be real in a variety of manners
Show the disclosure and should not be limited by embodiments set forth herein.On the contrary, these enforcements are provided
Mode is in order that the disclosure is more thorough and complete, and can be complete by the scope of the present disclosure
Convey to those skilled in the art.
For solve problem a, usually reduce the length of two end resonator cavitys of wave filter, simultaneously
Follow-up resonator cavity is about the half-wavelength of resonant frequency.However, when this wave filter has folding
Topological structure and differ port type when, such as a port is another end coaxial
Mouth is waveguide type, and that above-mentioned technical scheme will not act on to this kind of wave filter.This
In the case of, often require that two end resonator cavitys have identical length.Fig. 1 shows linear wave
The schematic diagram of waveguide filter.Here, length θ 1 at end filter, θ n can adjust with
Compensate x0,1,xn,n+1The effect at place.
For solve problem b, common solution is adjustable device, and such as, tuning can
Adjust coupling loop.For high power filter, this scheme would generally affect the power of wave filter
Capacity.
Coupling between the resonator cavity and external waveguide of waveguide type generally has inductive,
That is the coupling of energy is realized by the equal magnetic field in filter cavity and waveguide.
X in FIG0,1At position, magnetic field has maximum, and by simple opening Lai real
Now couple, generally referred to herein as " bore ".However, this opening is for the basis of resonator cavity frequency
Levy frequency and there is strong impact.Therefore, it is contemplated that not changing the inherently humorous of end resonator cavity
In the case of vibration frequency, produce the required coupling of the waveguide to attachment for the wave filter.
According to one embodiment of the invention, by coupling window by external waveguide and waveguide filter
The technical scheme of resonator cavity coupling can be used for excluding undesirable frequency load impact.
Fig. 2 shows the signal transmitting apparatus including waveguide and coupled resonance cavity filter.
As shown in Fig. 2 this signal transmitting apparatus includes coupled resonance cavity filter 210 and waveguide
212, wherein this coupled resonance cavity filter 210 be so-called folding resonant cavity filter simultaneously
And include the two equal number of resonator cavitys of row, for example every group comprises 3 resonator cavitys.Input port
211 are disposed at first end resonator cavity 213 and are configured to and tem pattern transmission line
(not shown) electrically connects, and output port 212 is disposed in the second end resonator cavity 214
At angle and be coupled at least one of external waveguide 212, thus by this external waveguide 212
The impact that led to of arrangement be minimized, and required energy transmission (coupling) will not
Excessively affect the natural frequency of this resonator cavity.
When the second end resonator cavity 214 and external waveguide 212 realize coupling by respective coupling window
Close, so that resonator cavity 214 and external waveguide 212 have common chamber.Especially,
One coupling window is formed at first jiao of external waveguide 212, and the second coupling window is formed at coupling
Close at corresponding with first jiao second jiao of resonant cavity filter 212.This two coupling windows can
Having a size being applied to unlike signal frequency, and the size of this coupling window be suitable for
Signal frequency is inversely proportional to it means that coupling window is bigger, and the signal frequency that it is suitable for is lower.
Input port and output port are all disposed at the s1 of identical surface, and outside ripple
Lead 212 and second end resonator cavity 214 with enjoying a volume, thus external waveguide 212 and second
The connection of resonator cavity 213 is only mode from filter transfer to waveguide for the energy, does not have other
Unwanted side effect.
In addition, in coupled resonance cavity filter 210, also depositing between resonator cavity 213 and 214
In opening, this opening can provide the coupling of the inductance or electric capacity between the two required to be adapted to
Filter transfer function.Therefore, it is arranged on the outside ripple of resonant cavity filter 21 corner
Lead magnetic field and/or the electric field that can adjust at resonator cavity 214, thus providing close to constant
Coupling.When input port receipt signal, this signal will flow through successively resonator cavity 213,215,
217th, 218,216 and 214, and at external waveguide 212 export, therefore, input and
The direction of output is substantially parallel.
As shown in figure 3, with by changing in the cavity of the externally-located waveguide of the first regulating bolt b1
Become its height in cavity to adjust electric field intensity, and first of the second coupling window cw
Divide the top being formed at resonator cavity 214 antetheca.In order to reduce caused by the arrangement of this waveguide
Impact, the width w1 of the Part I of the second coupling window cw is less than λ/4, simultaneously outside ripple
The width w2 leading is more than λ/2.In addition, resonator cavity 214 have substantially foursquare transversal
Face, and width is more than λ/2 that is to say, that the width of the antetheca of resonator cavity 213 is more than λ/2.
It is adapted for the maximum wavelength of the signal of transmission in this resonator cavity used herein of λ.In addition, adjusting
Section bolt can also be carried out work in the way of little " capacitive load " or serve as little " capacitive load ",
Consequently facilitating realizing impedance matching, and minimize reflection effect, it is achieved thereby that wave filter is extremely
The maximization of the power transmission of waveguide, vice versa.
As shown in figure 4, having three regulating bolts b1-b3 in the cavity of external waveguide 212,
And the Part II of the second coupling window cw is formed at the top of the side wall of resonator cavity 214.
Second coupling window cw is l shape, and achieves two phases by first, second part
Coupling on proximal surface.When microwave signal self-resonance chamber 214 is transmitted to external waveguide 212, energy
Amount can be transmitted by first, second part of the second coupling window cw.Part I and
The length of Part II is respectively less than λ/4, therefore decreases the impact to coupling for the frequency load.When
When the height of the second coupling window cw increases, the field being associated with the size of the second coupling window cw
Coupling amount also will increase therewith.
When magnetic field when being dimensioned, at the second end resonator cavity 214 for the second coupling window cw
Intensity is also correspondingly determined.Therefore, the coupling between adjustment resonator cavity and waveguide can be by adjusting
Electric field intensity at whole external waveguide is realizing.This three independent regulating bolts provide to be passed through
At least one of precession or three bolts of the back-out method to adjust electric field intensity herein.
With reference to Figure 4 and 5, three regulating bolt arow arrangements.At external waveguide 212
Electric field distribution, three regulating bolts are preferably arranged in chamber by the centrage along cavity bottom side
The bottom side of body.Three bolts need to be distributed with having certain intervals to each other, such as, d1, d2,
D3, such that it is able to be covered each by different frequency ranges, and then enables signal transmitting apparatus
Meet the requirement that transmission has the signal of different frequency.
It is understood that this three frequency ranges can have at least one overlapping frequency band,
That is, at least partly different frequency range of each regulating bolt correspondence.In the case,
When user wants to the signal adjustment electric field intensity that frequency is f1, he can select to twist tune
Section bolt b1, or stubborn regulating bolt b1 and b2, even b1, b2 and b3. are in the present invention
Embodiment in, when bolt b1 is threaded into, electric field intensity is elevated.
Connection between coupled resonance cavity filter 210 and external waveguide 212 achieves required
Energy transmits (coupling), without the natural frequency of impact end resonator cavity.This end resonator cavity and
External waveguide shares identical volume, and this is different from waveguide and the filtering that 'go'gage flange is realized
The traditional method that device end resonator cavity connects.
It should be understood that the above embodiments are not used for limiting the scope of the invention,
Every modifications and variations without departing substantially from inventive concept, all should be covered by the invention.For example,
Coupled resonance cavity filter 212 can have 4,6,8 or any even numbers or even odd number is humorous
Shake chamber, and the first and second coupling windows can also be adjustable such that it is able to adjust the second end
Magnetic field intensity at resonator cavity.This window to a certain degree can not only adjust length of magnetic field in Shangdi,
Can also determine to realize the stiffness of coupling needed for filter transfer function.
Those changes are all considered to be in the present invention and the scope of appended claim.This
Bright protection domain is defined in the claims.Verb " inclusion " illustrates except in claim
The element being limited, can also include other elements.
Claims (10)
1. a kind of signal transmitting apparatus, comprising:
Waveguide, it has the first coupling window being formed thereon, and be configured to transmission connect
The signal receiving；
Coupled resonance cavity filter, it includes the equal number of resonator cavity of two row, wherein first end
Resonator cavity is configured to connect coaxial transmission line, and the second end resonator cavity has and is formed at it
On the second coupling window, described second end resonator cavity is configured to described first, second
Coupling window is coupled to described waveguide, so that described second end resonator cavity and described waveguide are altogether
Use a volume.
2. signal transmitting apparatus as claimed in claim 1, described first coupling window and described
The size of two coupling windows determines the frequency range being suited for use in transmitting.
3. signal transmitting apparatus as claimed in claim 1.Wherein, described first coupling window shape
Become at first jiao of described waveguide, and described second coupling window be formed at described coupling humorous
Shake at corresponding with described first jiao second jiao of cavity filter.
4. signal transmitting apparatus as claimed in claim 1, wherein, described first coupling window and
Described second coupling window is adjustable, to adjust the magnetic field intensity at described second end resonator cavity.
5. signal transmitting apparatus as claimed in claim 1, wherein, described waveguide also includes:
Cavity；
At least two detached regulating bolts, it is located in described cavity, for by precession or
Screw out at least one regulating bolt to adjust the electric field intensity at described second end resonator cavity.
6. signal transmitting apparatus as claimed in claim 5, wherein, each regulating bolt is used for
Adjust the signal at least partly different frequency ranges.
7. signal transmitting apparatus as claimed in claim 5, wherein, described waveguide is additionally included in
Along three separate regulating bolts of centrage distribution on the bottom side of described cavity.
8. signal transmitting apparatus as claimed in claim 6, wherein, described frequency range is by every
The distance between two adjuster screw are determined.
9. signal transmitting apparatus as claimed in claim 1, described second coupling window is l shape.
10. signal transmitting apparatus as claimed in claim 9, wherein, described second coupling window
First top being formed on the strong antetheca of described second coupling, and described second coupling
Second of window is formed on the top of the strong side wall of described second coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510416167.0A CN106356600B (en) | 2015-07-15 | 2015-07-15 | Signal transmitting apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510416167.0A CN106356600B (en) | 2015-07-15 | 2015-07-15 | Signal transmitting apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106356600A true CN106356600A (en) | 2017-01-25 |
| CN106356600B CN106356600B (en) | 2019-01-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510416167.0A Active CN106356600B (en) | 2015-07-15 | 2015-07-15 | Signal transmitting apparatus |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2305762Y (en) * | 1997-07-02 | 1999-01-27 | 中国航天工业总公司第五研究院第五○四研究所 | One cavity three mode double operation device having one or two feedback |
| US6191664B1 (en) * | 1999-05-24 | 2001-02-20 | Space Systems/Loral, Inc. | Microwave multiplexer with tunable manifold and method of adjustment |
| EP0788180B1 (en) * | 1996-01-30 | 2003-08-27 | TELECOM ITALIA S.p.A. | Multi-mode cavity for waveguide filters |
| CN102544649A (en) * | 2012-01-04 | 2012-07-04 | 西安电子科技大学 | One-cavity three-mode filter |
-
2015
- 2015-07-15 CN CN201510416167.0A patent/CN106356600B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0788180B1 (en) * | 1996-01-30 | 2003-08-27 | TELECOM ITALIA S.p.A. | Multi-mode cavity for waveguide filters |
| CN2305762Y (en) * | 1997-07-02 | 1999-01-27 | 中国航天工业总公司第五研究院第五○四研究所 | One cavity three mode double operation device having one or two feedback |
| US6191664B1 (en) * | 1999-05-24 | 2001-02-20 | Space Systems/Loral, Inc. | Microwave multiplexer with tunable manifold and method of adjustment |
| CN102544649A (en) * | 2012-01-04 | 2012-07-04 | 西安电子科技大学 | One-cavity three-mode filter |
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| CN106356600B (en) | 2019-01-29 |
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