CN205723964U - Feed structure for Waveguide slot frequency scanning antenna - Google Patents
Feed structure for Waveguide slot frequency scanning antenna Download PDFInfo
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- CN205723964U CN205723964U CN201620371532.0U CN201620371532U CN205723964U CN 205723964 U CN205723964 U CN 205723964U CN 201620371532 U CN201620371532 U CN 201620371532U CN 205723964 U CN205723964 U CN 205723964U
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- ridge waveguide
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Abstract
This utility model belongs to plate aerial technical field, is specifically related to a kind of feed structure for Waveguide slot frequency scanning antenna.This structure includes pipe wall body；Arrange diaphragm plate in pipe wall body tube chamber, and form the double-layer cavity wall structure that upper strata is ridge waveguide layer and lower floor is square wave conducting shell；Metallic membrane is arranged at square wave conducting shell；Coupling window is set at the roof of square wave conducting shell；Left ridge waveguide and right ridge waveguide that ridge waveguide layer is arranged by axial symmetry are constituted；Along the signal rows inbound path of ridge waveguide layer, the two side of left ridge waveguide and right ridge waveguide all presents the stepped cavity structure of five-part form；Ridge waveguide also includes ridge block and special-shaped minor matters.This utility model overall structure is the compactest small and exquisite, and working loss is lower, also can realize both horizontal and verticals polarization characteristic conversion purpose according to demand, the whole efficiency of antenna array and the available lifting further of range of application.
Description
Technical field
This utility model belongs to plate aerial technical field, is specifically related to a kind of for Waveguide slot frequency
Sweep the feed structure of antenna.
Background technology
In various radio communications and radar system, transmitting and the reception of information all rely on antenna.
Along with modern Large Copacity, multi-functional, the fast development of ultra broadband integrated information system, identical platform
The information subsystem quantity of upper lift-launch is greatly increased, and required number of antennas increases the most accordingly,
This and requirement reduce integrated information system holistic cost, alleviate weight, reduction platform radar scattering section
Face, the development trend realizing good electromagnetism compatibility feature etc. contradict.For above-mentioned condition, multipole
Changing antenna and can effectively solve this problem, it dynamically can change according to the demand of reality application
The polarization mode of its work, thus provide polarity diversity so that anti-multipath fading and increase channel to be held
Amount.On the other hand, frequency scan antenna is a kind of effective means realizing the scanning of many velocities of wave, its energy
Generate the wave beam of several high-gains to cover certain angular region, avoid using complicated simultaneously
Beam-forming network.Traditional frequency scan antenna is tied by the snakelike slow waveguide as phase-shift unit
Structure and the Waveguide slot antenna as radiating element form, owing to waveguide loss is extremely low, the most permissible
Realize the frequency scanning antenna array demand of higher gain.The most conventional frequency scan antenna, only
Vertical polarization property requirements can be realized, namely said structure is only capable of realizing along snakelike slow waveguide structure
The microwave of width guides, and derives the signal along snakelike slow waveguide structure length direction just
Seem helpless.How to seek a kind of to construct the most succinct novel feed structure, it is possible to really
While protecting its smaller volume, lower working loss and more high workload efficiency, also can according to demand and
Realize horizontal polarization characteristic purpose, the technical barrier the most urgently to be resolved hurrily for this area.
Summary of the invention
The purpose of this utility model is for overcoming above-mentioned the deficiencies in the prior art, it is provided that a kind of structure is rationally
And a kind of feed structure for Waveguide slot frequency scanning antenna of practicality, its overall structure is the compactest
Small and exquisite, working loss is lower, also can realize both horizontal and verticals polarization characteristic and become according to demand
Change effect, the whole efficiency of antenna array and the available lifting further of range of application.
For achieving the above object, this utility model have employed techniques below scheme:
A kind of feed structure for Waveguide slot frequency scanning antenna, it is characterised in that: this structure includes
Profile is square pipe-shaped pipe wall body, with in four square cavity wall of pipe wall body two of relative narrower
Horizontally disposed cavity wall is narrow wall, this narrow wall parallel in pipe wall body tube chamber and the horizontal stroke of installation plate face level
Dividing plate；The cavity wall of diaphragm plate segmentation pipe wall body, and form that upper strata is ridge waveguide layer and lower floor is rectangle
The double-layer cavity wall structure of ducting layer；The gold of rectangular bulk is arranged at the narrow base wall of square wave conducting shell
Belonging to diaphragm, the length direction vertical tube wall body length direction of metallic membrane and metallic membrane length are equal to
Narrow wall width；The rectangular aperture running through this roof, this rectangle are set at the roof of square wave conducting shell
Gap constitutes the window that couples of connection ridge waveguide layer and square wave conducting shell, the length direction of rectangular aperture
Parallel metal diaphragm length direction and rectangular aperture symmetry division diaphragm plate；With above-mentioned rectangular aperture it is
Boundary, left ridge waveguide and right ridge waveguide that ridge waveguide layer is arranged by axial symmetry constitute, described left ridge waveguide
Coaxial with the axis of symmetry of metallic membrane with the axis of symmetry of the vertical shape of right ridge waveguide；Along ridge waveguide
The signal rows inbound path of layer, the two side of left ridge waveguide and right ridge waveguide all presents the ladder of five-part form
Chamber constructs, wherein, and first paragraph stepped cavity, second segment stepped cavity, the 3rd section of stepped cavity and the 4th
The two side spacing of section stepped cavity is sequentially reduced, and is positioned at the 5th section of stepped cavity at pipe wall body both ends
Two side spacing is equal to the two side spacing of first paragraph stepped cavity, second segment stepped cavity, the 3rd section of rank
The horizontal center line of the residing ridge waveguide of tract position deviation of ladder chamber and the 4th section of stepped cavity；Each rank
The roof in ladder chamber is at isoplanar, second segment stepped cavity, the 3rd section of stepped cavity and the 4th section of rank
The contour setting of floor height in ladder chamber, the floor height of first paragraph stepped cavity is less than aforementioned four ladder
The floor height in chamber；Ridge waveguide also includes ridge block and special-shaped minor matters, and ridge block profile is rectangular bulk
And its length direction parallel ridges waveguide length direction；Ridge block is arranged in the 5th section of stepped cavity, ridge block
It is disposed to extend to the 4th section of stepped cavity by the port of the 5th section of stepped cavity, and ridge block length is less than the
The length of five sections of stepped cavity；Special-shaped minor matters are the stepped stem structure of syllogic, constitute special-shaped minor matters
Often joint minor matters are all in same level in rectangular bulk and bottom surface, constitute same special-shaped minor matters
Often the length and width size of joint minor matters cross section is reduced successively along its special-shaped minor matters length direction, and each abnormal shape
The second segment minor matters length of minor matters is equal to the 3rd section of stepped cavity length of residing ridge waveguide；Each ridge ripple
The small end level of the special-shaped minor matters at the place of leading is crossed above-mentioned coupling window and is extended to another ridge waveguide
In first paragraph stepped cavity, the small end of special-shaped minor matters arranges that contiguous block is fixed on corresponding rank with suspension shape
The side side-walls in ladder chamber, fits in the face that the big end of special-shaped minor matters is cross-shaped with ridge block corresponding end-faces
Affixed, and the upper level of this big end is higher than ridge block upper level.
The beneficial effects of the utility model are:
1), it is different from traditional rectangular waveguide that directly uses and coordinates the conventional configurations of exterior antenna, originally
Utility model on the basis of original rectangular waveguide constructs, one layer of ridge waveguide structure of superposition, thus
Define the double-deck feed system that lower floor is square wave conducting shell and upper strata is ridge waveguide layer.This feed is tied
Structure loss is little, and feed efficiency is high, solves the feed structure horizontal signal biography along waveguide length direction
Send problem, and on the basis of bulk is limited, achieves the rectangular waveguide feed ridge to one-to-two
The difficult problem that waveguide connects, the loss of its whole feed structure is little, adds the efficiency after Waveguide slot antenna
Higher, can effectively promote the work efficiency of whole antenna-feedback system.This utility model structure compact and reasonable,
Reliable operation and stablize, can be widely applied to rectangular waveguide to ridge waveguide signal transmit occasion
In.
During practical operation, this utility model can be optionally different, and are considered as different waveguide seams
Gap resonance array antenna form.Owing to have employed double-end feed structure rather than traditional top layer feed knot
Structure, the ridge waveguide biasing seam that therefore this utility model both can have been arranged in pairs or groups conventional, it is also possible to collocation ridge ripple
Lead V-shape rake joist, thus meet either vertically or horizontally two kinds of polarization characteristics of the present utility model
Conversion requirement, final further its market range of application of lifting.
Accompanying drawing explanation
Fig. 1 is this utility model use state diagram in embodiment 2；
Fig. 2 is structural upright schematic diagram of the present utility model；
Fig. 3 is Fig. 1 structure apparent size mark figure on the downside of embodiment；
Fig. 4 is the partial schematic sectional view of Fig. 2；
Fig. 5 is the perspective view after the wherein sidewall removing pipe wall body；
Fig. 6 is the top view after the narrow wall in top removing pipe wall body；
Fig. 7 is the embodiment size marking figure of Fig. 6 structure；
Fig. 8 be after Fig. 7 removes special-shaped branch size marking figure；
Fig. 9 is that the A-A of Fig. 6 is to sectional view；
Figure 10 is the embodiment size marking figure of Fig. 9 structure；
Figure 11 is the perspective view of special-shaped minor matters；
Figure 12 is the front view of special-shaped minor matters；
Figure 13 is the embodiment size marking figure of special-shaped minor matters；
Figure 14 is the size marking figure of the top view of Figure 13；
Figure 15 is the emulation S11 figure of embodiment 1；
Figure 16 is the emulation coefficient of coup figure of embodiment 1；
Figure 17 is the artificial transmission coefficient figure of embodiment 1.
In accompanying drawing, each label is as follows with each component names corresponding relation of the present utility model:
A-feeds mouth B-the first coupling aperture C-the second coupling aperture D-straightthrough port
E-feed structure F-feeding network input port
10-pipe wall body 20-diaphragm plate 21-rectangular aperture 31-metallic membrane
41-the 3rd section of stepped cavity of first paragraph stepped cavity 42-second segment stepped cavity 43-
44-the 5th section of stepped cavity of the 4th section of stepped cavity 45-
46-ridge block 47-abnormal shape minor matters 48-contiguous block
Detailed description of the invention
For ease of understand, here in connection with accompanying drawing 1-17 to of the present utility model be embodied as structure and
Workflow describes below making:
Concrete structure of the present utility model, as represented in figures 1 through 14, its mainly by square wave conducting shell,
The coupling window being made up of rectangular aperture 21 forms to ridge waveguide layer three part of one-to-two again.Its
In, square wave conducting shell is positioned at immediately below ridge waveguide layer, and both are by being opened on diaphragm plate 20
Coupling window cause for gossip both signal transmission purpose existing.Square wave conducting shell arrange at bottom surface lie across whole
The metallic membrane 31 of individual narrow wall, and this metallic membrane 31 is positioned at the underface of above-mentioned coupling window.
In view of coupling window place diaphragm plate 30 integral sinking to form first paragraph stepped cavity 41, now
At square wave conducting shell, just look like coupling window place one section of diaphragm plate 30 entirety to
Lower recess or charge in square wave conducting shell, so that structure is formed shown in Fig. 8 at coupling window
The boss structure downwardly extended.During practical operation, by regulation coupling window place diaphragm plate 30
Namely the degree of depth of wave guide wall concave downward, the signal ridge by square wave conducting shell to one-to-two can be increased
The distance advanced at ducting layer, the performance improving low frequency with this, it is allowed to consistent with other frequency.
During practical operation, left ridge waveguide that this utility model is biased by axial symmetry and right ridge waveguide,
Electric feed signal enters via square wave conducting shell one end, and is entered the ridge of one-to-two by coupling window
At ducting layer, enter back in external antenna array as shown in Figure 1 after ridge waveguide layer converts, from
And formed and passed to the signal of the ridge waveguide layer of the abnormity of one-to-two again by square wave conducting shell, coupling window
Transmission path.The structure that the bottom surface of special-shaped minor matters 47 is flat so that its bottom edge and ridge block 46 end
Face is consistent, and the transformer section formed between the special-shaped minor matters 47 of middle utilization and corresponding cavity wall realizes two
The impedance matching of person.Now, it is in due to ridge waveguide layer, diaphragm plate 20 and square wave conducting shell
In the cavity wall of pipe wall body 10, therefore width is consistent with each other, it is ensured that the array when 40 degree of scan angles
Spacing is sufficiently small, without there is graing lobe phenomenon.And external antenna structure may utilize biasing stitch into
Row radiation.
For ensureing the concordance of the coefficient of coup in bandwidth, and additive phase is in the coupling of relatively Larger Dynamic
Concordance under coefficient, the design of HT coupled structure is the key of frequency scanning antenna.By offering gap
The coupling window that length wall narrow with pipe wall body 10 width is identical, rely on regulate this window size and
The method of special-shaped minor matters 47 each minor matters length, can realize its convenient regulating effect, its workability
Can be excellent.
Because whole special-shaped minor matters 47 have completely offset from the horizontal center line of ridge waveguide layer, therefore two
The most there is not interference in individual axisymmetric special-shaped minor matters 47.Special-shaped minor matters 47 and ridge
The contiguous block 48 as contact portion is there is between ducting layer inwall namely wave guide wall.Although two special-shaped branches
Some coupling between joint 47, but complete axisymmetric structure has no effect on finally in waiting subnetwork
The performance of signal one-to-two.It is direct rod shape for ensureing special-shaped minor matters 47, the most special-shaped
Minor matters 47 should deviate above-mentioned horizontal center line, and lower limb should be on same level face,
Whole special-shaped minor matters 47 concurrently form stepped stem columnar structure, the least only 20-30W of its coaxial impedance.
Relatively long by adjusting each branch of the special-shaped minor matters 47 in the bore of coupling window and ridge waveguide layer
Degree, can realize the coupling purpose under the various coefficient of coup.
For ease of being further appreciated by, provide following two groups of embodiments, to further describe this reality herein
The structure that is embodied as with novel:
Embodiment 1:
Seeing Fig. 2, feed mouth A is signal input, and the first coupling aperture B is same with feed mouth A
Side；Fig. 3 is its side-looking size marking figure.By in Fig. 3, residing for lower floor's cross section, tract is
Square wave conducting shell, wherein broadside a=12.95mm, narrow limit b=6.48mm.Chamber residing for the cross section of upper strata
Road is ridge waveguide layer, wherein shares narrow wall, therefore ridge waveguide slice width degree with square wave conducting shell
B=6.48mm, ridge waveguide layer height th=4.04mm, ridge block width tw=3.12mm, ridge tile height
H=2.56mm.And other end of port sizes of the present utility model is as it is shown in figure 5, the second coupling
Mouth C and the first coupling aperture B size are completely the same, and mouth A is completely the same with straightthrough port D size for feed.
Even, left ridge waveguide and the second coupling aperture C are connected, and constitute each ridge for right ridge waveguide and the first coupling aperture B
Cavity and special-shaped branch 47 size of waveguide are completely the same.The length of metallic membrane 31 and square wave
The narrow wall consistent size of conducting shell, for b=6.48mm.
See Fig. 7, Fig. 7 be special-shaped minor matters 47 in ridge waveguide layer time position mark figure, wherein:
Lt=6.46mm, wt=4.22mm.
Apparent for visual angle, Fig. 8 then for take out special-shaped branch 47 backfin ducting layer vertical view shape
Size marking figure under state, wherein:
W1=6.48mm, w2=2.14mm, w3=2.54mm, w4=3.28mm, l1=18mm, l2=2mm,
L3=4.4mm, l4=2mm, l5=12.95mm.
See Figure 10, for the embodiment size marking figure of Fig. 9, wherein:
Ma=16.9mm, mb=12.95mm, mc=11.25mm, md=11.85mm, lf=1.8mm, fall
Angular radius rd=0.5mm, perforate spacing le=2.96mm.Feed mouth A is spacing at coupling window
Ls=33.18mm, feeds mouth A center distance lv=35.18mm away from metallic membrane.Metallic membrane
31 wide wk=0.8mm, high jh=0.9mm.In addition to the wall thickness of reality mark, remaining all wall thickness is equal
For 1mm.
Figure 13-14 is each size marking figure of special-shaped minor matters 47, wherein:
La=12.38mm, lb=9.6mm, ld=9mm, wa=1mm, wt=2.38mm, wb=0.7mm,
Wc=0.5mm, wd=2.2mm, we=1.45mm, wf=2.66mm, wg=2.25mm, wh=1.34mm,
Wi=0.5mm, wj=0.58mm, ww=1.46mm, ta=1.38mm, tj=0.92mm.
In the present embodiment, its center operating frequency is 16.5GHz, and working frequency range is
15.8～17.25GHz.The input signal of the present embodiment meets feed mouth A, and output signal is by straight-through
Mouth D discharges, and the first coupling aperture B and the second coupling aperture C gives external spoke by I shape gap respectively
Penetrate antenna and carry out signal feed.
By actually detected, see Figure 15～Figure 17, draw the S11 figure of the present embodiment, coupling respectively
Close curve chart and transmission coefficient figure.From graphic result, draw feed structure according to the present embodiment,
Its S11 value is better than ± 0.25dB less than rising and falling in-20dB, coefficient of coup band in frequency band, feed
Efficiency is better than 99%, and its work efficiency is high.
Embodiment 2:
See Fig. 1, sweep sky for utility model works in 42 × 12 Waveguide slot frequencies of Ku wave band
Structural representation at line.In the present embodiment, ridge waveguide broadside gap selected by external active antenna
Antenna, each is classified as 12 unit resonance standing-wave arrays.The feedback that wherein this utility model is constituted side by side
Electricity structure E is identical, no in construction profile, operation principle with the feed structure described in embodiment 1
With the Size-Selective Process of feed structure of the coefficient of coup, scope, operation principle etc., can be by implementing
Example 1 and aforementioned texts and the most data-optimized draw, I will not elaborate.During work, antenna
Input signal fed by the feeding network input port F of one end, output signal is by being positioned at feed
Feeding network output termination matched load at another section of structure E.This embodiment illustrates this practicality
Novel feed structure is in 42 × 12 Waveguide slot frequency scanning antenna systems working in Ku wave band
Concrete application, can be radiated to various waveguide in the network of waveguide feed.
Claims (1)
1. the feed structure for Waveguide slot frequency scanning antenna, it is characterised in that: this structure
It is square pipe-shaped pipe wall body (10) including profile, with four square cavity wall of pipe wall body (10)
Two horizontally disposed cavity wall of middle relative narrower are narrow wall, in pipe wall body (10) tube chamber parallel should
Narrow wall and the diaphragm plate (20) of installation plate face level；Diaphragm plate (20) segmentation pipe wall body (10)
Cavity wall, and form the double-layer cavity wall structure that upper strata is ridge waveguide layer and lower floor is square wave conducting shell；
The metallic membrane (31) of rectangular bulk, metallic membrane is arranged at the narrow base wall of square wave conducting shell
(31) length direction vertical tube wall body (10) length direction and metallic membrane (31) length etc.
In narrow wall width；The rectangular aperture (21) running through this roof is set at the roof of square wave conducting shell,
This rectangular aperture (21) constitutes the window that couples of connection ridge waveguide layer and square wave conducting shell, rectangular slits
Length direction parallel metal diaphragm (31) length direction of gap (21) and rectangular aperture (21) are right
Claim segmentation diaphragm plate (20)；With above-mentioned rectangular aperture (21) as boundary, ridge waveguide layer is by axial symmetry
The left ridge waveguide arranged and right ridge waveguide are constituted, the vertical shape of described left ridge waveguide and right ridge waveguide
The axis of symmetry is coaxial with the axis of symmetry of metallic membrane (31)；Signal rows route along ridge waveguide layer
Footpath, the two side of left ridge waveguide and right ridge waveguide all presents the stepped cavity of five-part form and constructs, wherein,
First paragraph stepped cavity (41), second segment stepped cavity (42), the 3rd section of stepped cavity (43) and
The two side spacing of four sections of stepped cavity (44) is sequentially reduced, and is positioned at pipe wall body (10) both ends
Between the two side spacing of the 5th section of stepped cavity (45) two side equal to first paragraph stepped cavity (41)
Away from, second segment stepped cavity (42), the 3rd section of stepped cavity (43) and the 4th section of stepped cavity (44)
The horizontal center line of the residing ridge waveguide of tract position deviation；The roof of each stepped cavity is in isoplanar
Place, second segment stepped cavity (42), the 3rd section of stepped cavity (43) and the 4th section of stepped cavity (44)
The contour setting of floor height, the floor height of first paragraph stepped cavity (41) be less than aforementioned four rank
The floor height in ladder chamber；Ridge waveguide also includes ridge block (46) and special-shaped minor matters (47), ridge block
(46) profile is rectangular bulk and its length direction parallel ridges waveguide length direction；Ridge block (46)
Being arranged in the 5th section of stepped cavity (45), ridge block (46) is by the end of the 5th section of stepped cavity (45)
Mouth is disposed to extend to the 4th section of stepped cavity (44) place, and ridge block (46) length is less than the 5th section of rank
The length of ladder chamber (45)；Special-shaped minor matters (47) are the stepped stem structure of syllogic, constitute abnormal shape
The often joint minor matters of minor matters (47) are all in same level in rectangular bulk and bottom surface, constitute same
The length and width size of the often joint minor matters cross section of one special-shaped minor matters is along its special-shaped minor matters (47) length direction
Reduce successively, and the second segment minor matters length of each special-shaped minor matters (47) is equal to residing ridge waveguide
3rd section of stepped cavity (43) length；The small end level of the special-shaped minor matters (47) at each ridge waveguide is more
Cross above-mentioned coupling window and extend in the first paragraph stepped cavity (41) of another ridge waveguide, special-shaped branch
The small end of joint (47) arranges that contiguous block (48) is to suspend the side being fixed on respective steps chamber of shape
Side-walls, the face that the big end of special-shaped minor matters (47) is cross-shaped with ridge block (46) corresponding end-faces is pasted
Close affixed, and the upper level of this big end is higher than ridge block (46) upper level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620371532.0U CN205723964U (en) | 2016-04-27 | 2016-04-27 | Feed structure for Waveguide slot frequency scanning antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620371532.0U CN205723964U (en) | 2016-04-27 | 2016-04-27 | Feed structure for Waveguide slot frequency scanning antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205723964U true CN205723964U (en) | 2016-11-23 |
Family
ID=57291161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620371532.0U Withdrawn - After Issue CN205723964U (en) | 2016-04-27 | 2016-04-27 | Feed structure for Waveguide slot frequency scanning antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205723964U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105789914A (en) * | 2016-04-27 | 2016-07-20 | 安徽四创电子股份有限公司 | Feeding structure for waveguide slot frequency scanning antenna |
| CN108054523A (en) * | 2017-10-31 | 2018-05-18 | 安徽四创电子股份有限公司 | A kind of frequency scanning phased array antenna |
-
2016
- 2016-04-27 CN CN201620371532.0U patent/CN205723964U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105789914A (en) * | 2016-04-27 | 2016-07-20 | 安徽四创电子股份有限公司 | Feeding structure for waveguide slot frequency scanning antenna |
| CN105789914B (en) * | 2016-04-27 | 2018-08-10 | 安徽四创电子股份有限公司 | Feed structure for Waveguide slot frequency scanning antenna |
| CN108054523A (en) * | 2017-10-31 | 2018-05-18 | 安徽四创电子股份有限公司 | A kind of frequency scanning phased array antenna |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161123 Effective date of abandoning: 20180810 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20161123 Effective date of abandoning: 20180810 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |