CN208062235U - Rectangular waveguide bimodulus resonant cavity, waveguide dual mode filter, double-mode duplexer - Google Patents
Rectangular waveguide bimodulus resonant cavity, waveguide dual mode filter, double-mode duplexer Download PDFInfo
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- CN208062235U CN208062235U CN201721871244.2U CN201721871244U CN208062235U CN 208062235 U CN208062235 U CN 208062235U CN 201721871244 U CN201721871244 U CN 201721871244U CN 208062235 U CN208062235 U CN 208062235U
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- waveguide
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- dual mode
- resonant cavity
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Abstract
The utility model discloses a kind of rectangular waveguide bimodulus resonant cavities, including a rectangular waveguide Single-mode Resonator, upward, downwardly projecting different height is distinguished at the same position in its upper and lower face H, it is respectively formed the closed rectangular vertical waveguide of the closed rectangular vertical waveguide in one section of upper end and one section of lower end, projection of two sections of rectangular vertical waveguides on the faces H of the rectangular waveguide Single-mode Resonator is completely superposed.The invention also discloses a kind of waveguide dual mode filter and double-mode duplexers.The utility model waveguide dual mode filter realizes transmission zero by way of multimode, has more excellent performance；The utility model waveguide dual mode filter is operable with E frequency ranges or higher frequency range, it only needs less resonant cavity to can be achieved with the inhibition requirement that the filter of common Chebyshev's response uses more resonant cavities can be only achieved, therefore there is better Insertion Loss and group delay performance；In addition, the utility model waveguide dual mode filter structure is simpler, manufacturing cost is lower.
Description
Technical field
The utility model is related to a kind of waveguide dual mode filters, more particularly to one kind being used for E frequency ranges (E-band) or higher
The waveguide dual mode filter of frequency range.
Background technology
Due to its working frequency height, frequency band is very wide, and frequency spectrum resource is abundant, therefore E-band is the research hotspot of 5G communications,
High capacity communication can be solved the problems, such as with E-band.The exploitation of E-band 5G communication base stations, which is be unable to do without, works in the high property of the frequency band
The waveguide filter and waveguide duplexer of energy.
E-band filters are different from the filter of conventional frequency range, and since its working frequency is in 80G, frequency is very high, size
Very little, it is not possible to it debugs, it is very high to the design and requirement on machining accuracy of device.Therefore it is difficult to as conventional filter,
The Out-of-band rejection that filter is improved by definite transmission zero reduces the interior Insertion Loss of band of filter.The E-band reported at present
Filter is entirely that the Chebyshev of standard responds, all without transmission zero on response curve.Therefore meet E-band filtering
The technology requirement of device, general high low side are required for 8 resonant cavities, excessive resonant cavity that will necessarily increase the interior Insertion Loss of band of filter
Consumption increases group delay flatness and increases manufacturing cost and manufacture difficulty.To solve the problems, such as this, Jiangsu shellfish inspires confidence in moral communication science and technology
Limited liability company is it has been suggested that a kind of E-band filters with zero design the (patent No.：ZL201621472624.4), energy
It brings zero into, increases Out-of-band rejection well, reduce Group Delay Ripple and Insertion Loss, but the design is from the faces H subdivision, it is necessary to weld
Connect, which results in the cavity and cover boards must be silver-plated, and silver-plated thickness is difficult control, due to the size of E-band devices be as
This small, it is silver-plated to be just enough that frequency is caused to have prodigious movement to high-end, so that even if processing dimension can if very accurate
Since silver plating thicknesses control off-dimension that is bad and causing product, the electrical property of entire filter and filter is caused not conform to
Lattice.In welding process, the soldering paste of thawing is easy to flow in resonant cavity, causes product unqualified.Due to the two, cause
The product qualification rate of the design is not high, is unfavorable for mass producing.
Compared to traditional waveguide single mode filter, waveguide dual mode filter is since there are two humorous in its at least one resonant cavity
It shakes pattern, is equivalent to two Single-mode Resonators, and be easy to generate cross-couplings and generate zero, thus there is smaller volume
With better Out-of-band rejection performance.But the dual mode filter of common circular waveguide type, two patterns in bimodulus resonant cavity
It is orthogonal modes, it is necessary to the drivescrew at 45 degree of two patterns intersection so that coupling is generated between two patterns, in routine
Frequency range, size is larger, can also realize.But in E-band frequency ranges, since device size is too small, this kind knot can not be achieved at all
Structure；And the electric current of one of pattern will necessarily be cut, no as long as device has carried out subdivision due to being orthogonal pattern
Using welding manner, no matter from which oriented partition, leakage, therefore existing waveguide bimodulus resonance can be all led to the problem of
Cavity configuration is not applicable in E-band frequency ranges.
Utility model content
The technical problem to be solved by the utility model is to overcome the shortage of prior art, one kind is provided and is applicable to E-
The rectangular waveguide bimodulus resonant cavity of band, and on this basis provide one kind being operable with E frequency ranges or higher frequency range and structure more
Simply, manufacturing cost cheap waveguide dual mode filter and double-mode duplexer.
The rectangular waveguide bimodulus resonant cavity of the utility model, including a rectangular waveguide Single-mode Resonator, the rectangular waveguide list
Distinguish upward, downwardly projecting different height at the same position in the upper and lower faces H of mode resonant cavity, is respectively formed one section of upper end
The closed rectangular vertical waveguide of closed rectangular vertical waveguide and one section of lower end, two sections of rectangular vertical waveguides are in the rectangular wave
The projection led on the faces H of Single-mode Resonator is completely superposed.
The waveguide dual mode filter of the utility model is used for E frequency ranges or higher frequency range, including one group of resonant cavity, wherein extremely
Resonant cavity is rectangular waveguide bimodulus resonant cavity as described above there are one few.
Preferably, which is assembled by two individual components along waveguide E face subdivision.One side
Production of looking unfamiliar is simple to manufacture, and on the one hand not will produce any leakage.
It is further preferred that described two individual components are assembled by screw association.To can effectively avoid welding manner
A series of problems caused by assembly.
The double-mode duplexer of the utility model is used for E frequency ranges or higher frequency range comprising high end filter and low side filtering
Device, the high end filter and/or low side filter are waveguide dual mode filter described in any of the above technical solution.
Compared with prior art, technical solutions of the utility model have the advantages that：
Two patterns in the utility model rectangular waveguide bimodulus resonant cavity are non-orthogonal modes, do not need 45 degree of increase
The screw of coupling, both of which can be with direct-couplings.And two kinds can be controlled by the width of control rectangle vertical waveguide
The stiffness of coupling of non-orthogonal mode, by controlling the length of longer rectangular vertical waveguide come the position of controlling transmission zero.
The utility model waveguide dual mode filter realizes transmission zero by way of multimode, has more excellent property
Energy.The utility model waveguide dual mode filter is operable with E frequency ranges or higher frequency range, only needs less resonant cavity real
Now the filter of common Chebyshev's response uses the inhibition requirement that more resonant cavities can be only achieved, therefore with preferably slotting
Damage and group delay performance.There is no leakages in waveguide broadside subdivision, therefore in split surface for the utility model waveguide dual mode filter
The problem of, it need not weld, also not need silver-plated.
Description of the drawings
Fig. 1 is the parts composition schematic diagram of one specific embodiment of the utility model waveguide dual mode filter；
Fig. 2 is the internal structure schematic diagram of the utility model waveguide dual mode filter specific embodiment；
Fig. 3 is the structural schematic diagram of rectangular waveguide Single-mode Resonator；
Fig. 4 is the field distribution sectional view of two modes of resonance in rectangular waveguide Single-mode Resonator；
Fig. 5 is the port coupling delays simulation calculation figure of rectangular waveguide Single-mode Resonator；
Fig. 6 is the S parameter response curve of the utility model waveguide dual mode filter specific embodiment.
Each reference numeral meaning is as follows in figure：
1, rectangular waveguide Single-mode Resonator, 2, rectangular waveguide bimodulus resonant cavity, 3, input/output port, 4, coupling window,
21, rectangular waveguide Single-mode Resonator, 22, longer rectangular vertical waveguide, 23, shorter rectangular vertical waveguide.
Specific implementation mode
In view of the deficiencies of the prior art, the utility model proposes a kind of rectangular waveguide bimodulus being applicable to E-band is humorous
Shake chamber comprising a rectangular waveguide Single-mode Resonator, the same position punishment in the upper and lower faces H of the rectangular waveguide Single-mode Resonator
Not upward, downwardly projecting different height is respectively formed the closed rectangular vertical waveguide in one section of upper end and one section of lower end envelope
The rectangular vertical waveguide closed, projection of two sections of rectangular vertical waveguides on the faces H of the rectangular waveguide Single-mode Resonator are completely heavy
It closes.Two patterns in the utility model rectangular waveguide bimodulus resonant cavity are non-orthogonal modes, do not need 45 degree of increase coupling
Screw, both of which can be with direct-coupling.And can by the width of control rectangle vertical waveguide come control two kinds it is non-just
The stiffness of coupling of friendship pattern, by controlling the length of longer rectangular vertical waveguide come the position of controlling transmission zero.
The utility model is on the basis of above-mentioned rectangular waveguide bimodulus resonant cavity, it is proposed that one kind be operable with E frequency ranges or
Higher frequency range and structure is simpler, manufacturing cost cheap waveguide dual mode filter and double-mode duplexer.
It is below with a specific embodiment of the utility model waveguide dual mode filter and new to carrying out this practicality in conjunction with attached drawing
The technical solution of type is described in detail：
Waveguide dual mode filter in the present embodiment is 7 rank filters, as shown in Figure 1, the waveguide dual mode filter is by two
The individual components of a almost symmetry are assembled, and two individual components are the faces the E subdivisions along waveguide, therefore two components
Between combination assembly need not weld, it is only necessary to simple screw assembly.All positions for keeping to the side to connect angle in the present embodiment
It sets and is all reserved with circular arc, facilitate processing feed.
Fig. 2 shows the internal structure of the waveguide dual mode filter.As shown in Fig. 2, the waveguide dual mode filter includes two
The input/output port 3 at end and 6 resonant cavities, wherein 5 resonant cavities are rectangular waveguide Single-mode Resonator 1, as main mould
Resonant cavity；Only TE10 die workers make in main mould resonant cavity.6th resonant cavity is shape waveguide bimodulus resonant cavity 2.Between resonant cavity
And it is of coupled connections respectively by coupling window 4 between resonant cavity and input/output port 3.
The detailed construction of rectangular waveguide bimodulus resonant cavity 2 is as shown in Figure 3 comprising rectangular waveguide Single-mode Resonator 21, square
Distinguish upward, downwardly projecting different height at the same position in the upper and lower faces H of shape waveguide Single-mode Resonator 21, is respectively formed
The closed rectangular vertical waveguide 23 of the closed rectangular vertical waveguide 22 in one section of upper end and one section of lower end, two sections of rectangular vertical waves
22,23 projection on the faces H of rectangular waveguide Single-mode Resonator 21 is led to be completely superposed.
The structure of the rectangular waveguide bimodulus resonant cavity 2 can be regarded as the broadside in rectangular waveguide Single-mode Resonator 21
One section of waveguide vertical with it is inserted, the vertical waveguide is closed at both ends, and the vertical waveguide of the insertion is not along rectangular waveguide list
Mode resonant cavity 21 is symmetrical, and part above (i.e. rectangular vertical waveguide 22) is slightly long, can be called long-armed；And following part
(i.e. rectangular vertical waveguide 23) is slightly shorter, can be called galianconism.The rectangular waveguide bimodulus resonant cavity 2 has in the passband of filter
There are two mode of resonance, the field distribution sectional view of the two modes of resonance is shown in Fig. 4.Its pattern one is mainly distributed on and other rectangles
In the waveguide in the 1 same direction of waveguide Single-mode Resonator, the electric field of mode of resonance two is mainly distributed on the galianconism of vertical waveguide (i.e.
Rectangular vertical waveguide 23) in, the direction of an electric field of two patterns is nonopiate, and the width by controlling vertical waveguide can control this
The stiffness of coupling of two patterns in resonant cavity, the coefficient of coup meet formula k=(f1 2-f2 2)/(f1 2+f2 2).Wherein long-armed length
Degree substantially determines the position of transmission zero, can be on a left side for filter with controlling transmission zero by controlling the long-armed length
Side or the right.The width of the vertical waveguide substantially determine the rectangular waveguide bimodulus intra resonant cavity two resonant frequencies it
Between coupling size.By adjusting rational structure size, then the port coupling delays that can be met the requirements, port coupling
Time delay simulation calculating figure is shown in Fig. 5, can be clearly seen that there are two resonant frequencies for resonant cavity tool, and coupling amount meets passband band
Width is the port of wave filter decoupling calls of 71--76GHz.
Fig. 6 gives the S parameter response curve of the 7 rank waveguide dual mode filter, it will be appreciated from fig. 6 that the filter only needs
Want six resonant cavities, you can to realize the frequency response of 7 rank filters, and with having transmission zero outside, there is good band
Outside inhibitory energy and with interior Insertion Loss performance.
It these are only illustration.In practical applications, the quantity of specific used rectangular waveguide bimodulus resonant cavity, position
It sets, dimensional parameters etc. can be adjusted flexibly according to actual needs.
From the above description, it can be seen that the utility model waveguide dual mode filter realizes transmission zero by way of multimode
Point has more excellent performance.The utility model waveguide dual mode filter is operable with E frequency ranges or higher frequency range, only needs
Less resonant cavity is wanted to can be achieved with the inhibition that the filter of common Chebyshev's response uses more resonant cavities can be only achieved
It is required that therefore there is better Insertion Loss and group delay performance.The utility model waveguide dual mode filter in waveguide broadside subdivision, because
This split surface there is no leakage the problem of, need not weld, do not need yet it is silver-plated, manufacture it is simpler, cost of implementation is lower.
The double-mode duplexer for working in E-band can be equally realized with the technology, that is, uses the utility model waveguide bimodulus
High end filter and/or low side filter of the filter as duplexer.The double-mode duplexer has with outer zero, can be great
Improve duplex capability, and then improves the performance of entire communication system.
Claims (5)
1. a kind of rectangular waveguide bimodulus resonant cavity, which is characterized in that including a rectangular waveguide Single-mode Resonator, the rectangular waveguide list
Distinguish upward, downwardly projecting different height at the same position in the upper and lower faces H of mode resonant cavity, is respectively formed one section of upper end
The closed rectangular vertical waveguide of closed rectangular vertical waveguide and one section of lower end, two sections of rectangular vertical waveguides are in the rectangular wave
The projection led on the faces H of Single-mode Resonator is completely superposed.
2. a kind of waveguide dual mode filter is used for E frequency ranges or higher frequency range, which is characterized in that including one group of resonant cavity, wherein extremely
Resonant cavity is rectangular waveguide bimodulus resonant cavity as described in claim 1 there are one few.
3. waveguide dual mode filter as claimed in claim 2, which is characterized in that the waveguide dual mode filter along waveguide E face by cuing open
Two individual components being divided to are assembled.
4. waveguide dual mode filter as claimed in claim 3, which is characterized in that described two individual components are filled by screw association
Match.
5. a kind of double-mode duplexer is used for E frequency ranges or higher frequency range comprising high end filter and low side filter, feature
It is, the high end filter and/or low side filter are any one of claim 2~4 waveguide dual mode filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721871244.2U CN208062235U (en) | 2017-12-28 | 2017-12-28 | Rectangular waveguide bimodulus resonant cavity, waveguide dual mode filter, double-mode duplexer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721871244.2U CN208062235U (en) | 2017-12-28 | 2017-12-28 | Rectangular waveguide bimodulus resonant cavity, waveguide dual mode filter, double-mode duplexer |
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| Publication Number | Publication Date |
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| CN208062235U true CN208062235U (en) | 2018-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721871244.2U Withdrawn - After Issue CN208062235U (en) | 2017-12-28 | 2017-12-28 | Rectangular waveguide bimodulus resonant cavity, waveguide dual mode filter, double-mode duplexer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108306088A (en) * | 2017-12-28 | 2018-07-20 | 江苏贝孚德通讯科技股份有限公司 | Rectangular waveguide bimodulus resonant cavity, waveguide dual mode filter, double-mode duplexer |
-
2017
- 2017-12-28 CN CN201721871244.2U patent/CN208062235U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108306088A (en) * | 2017-12-28 | 2018-07-20 | 江苏贝孚德通讯科技股份有限公司 | Rectangular waveguide bimodulus resonant cavity, waveguide dual mode filter, double-mode duplexer |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20181106 Effective date of abandoning: 20200731 |