CN209150308U - The face conformal ultra wide band H electromagnetic horn based on SIW - Google Patents
The face conformal ultra wide band H electromagnetic horn based on SIW Download PDFInfo
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- CN209150308U CN209150308U CN201920051705.4U CN201920051705U CN209150308U CN 209150308 U CN209150308 U CN 209150308U CN 201920051705 U CN201920051705 U CN 201920051705U CN 209150308 U CN209150308 U CN 209150308U
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Abstract
The utility model discloses a kind of face the conformal ultra wide band H electromagnetic horn based on SIW, the face conformal ultra wide band H electromagnetic horn includes N number of face the conformal ultra wide band H electromagnetic horn unit of conductor and equidistant horizontal arrangement in conductor side surface；The face conformal ultra wide band H electromagnetic horn unit includes coaxial line, converter section, ridge waveguide, the face H electromagnetic horn, arc-shaped bore portion and the dielectric-slab for loading ridge structure.The utility model is able to solve the conformal critical issue in curved conductor platform of the face H electromagnetic horn, and guarantee antenna has the characteristics such as ultra wide band, stable directional diagram in the case where structural bending.
Description
Technical field
The utility model relates to microwave radio field of antenna, in particular to a kind of face conformal ultra wide band H based on SIW
Electromagnetic horn.
Background technique
The military affairs skill such as the fast development of wireless communication technique and radar, early warning, detection, missile guidance and electronic countermeasure
Art is constantly progressive, and antenna is also evolving as the core component of wireless system.Industry and military project system are to antenna
The technical indicators such as construction profile, performance parameter, assembly method, size propose new demand, the potential need of high performance antenna
Ask the progress and development for further having pushed antenna technology.The structure type of antenna is from traditional three-dimensional mechanical structure to planar junction
Structure and the conformal structural development of carrier platform.
Broadband antenna technology is mainly used in military field in early days, in radar monitoring, anti-stealth technololgy, electronic countermeasure etc.
Aspect has contribution outstanding.In recent years, super-broadband tech is also gradually introduced into civil field, in broadband connections, spread spectrum communication, spy
The fields such as ground radar, the measurement of field, electromagnetic compatibility have a wide range of applications.With the increase of radio communication service type and logical
Believe the raising of capacity, in order to meet the demands for development of various commercial and military wireless device, people to light-weight, flexible structure,
Section is low and the antenna requirements that are easily integrated also become strong.Although some traditional antennas are able to achieve ultra wide band characteristic and consolidate
Gain, but in order to adapt to the development of future wireless system, antenna will not only pursue wide band characteristic, while also take into account
To miniaturization, polarization and with problems such as interior directional diagram stability.Modern Satellite broadcast, the communication system of cell phone platform, nothing
Man-machine detection system etc. is increasingly relied on for counsel in low section, broad-band antenna.Therefore, explore and develop ultralow section broad-band antenna
Structure and mechanism, research and solution are suitble to the key technology tool of missile-borne, airborne conformal ultra-wideband antenna in design and test
There are important scientific meaning and engineering application value.
Utility model content
The utility model aim is to provide a kind of face conformal ultra wide band H electromagnetic horn based on SIW, is able to solve the face H
The conformal critical issue in curved conductor platform of electromagnetic horn, guarantee antenna have ultra-wide in the case where structural bending
The characteristics such as band, stable directional diagram.
To reach above-mentioned purpose, in conjunction with Fig. 1 to Fig. 4, the utility model proposes a kind of face conformal ultra wide band H based on SIW
Electromagnetic horn, the face conformal ultra wide band H electromagnetic horn include conductor and equidistant horizontal arrangement in the N number of of conductor side surface
The face conformal ultra wide band H electromagnetic horn unit；
The conductor includes the first conductor portion and the second conductor portion interconnected, and the first conductor portion is in pyramid type, and second
Conductor portion is in cylindrical type, and the bottom surface of the first conductor portion is identical as the top surface size of the second conductor portion；
There is a cavity, N number of face conformal ultra wide band H electromagnetic horn unit is fixed on second by fastening part in the conductor
On the side surface of conductor portion；
The face conformal ultra wide band H electromagnetic horn unit includes converter section, ridge waveguide, the face the H loudspeaker day for loading ridge structure
Line and dielectric-slab；
The dielectric-slab includes the patch layer, dielectric layer, metal layer overlapped from top to bottom along the vertical direction, the patch
Lamella, dielectric layer, metal layer are parallel to each other；
On conductor side surface, the dielectric layer is attached the dielectric-slab parallel laid by metal layer and conductor side surface
Connection；
The face the H electromagnetic horn of the load ridge structure includes the first gap that the upper surface of dielectric layer is arranged in, the second seam
Gap and ridge structure；
First gap and the second gap are symmetricly set on ridge structure two sides, and the extending direction along ridge structure is in loudspeaker
Horn shape；
The ridge structure includes the first groove that dielectric-slab upper surface is arranged in step type, the extension side of shaft centre line
To conductor side surface is parallel to, ridge structure includes sequentially connected first stepped part, second step ladder, third stepped part；
The width of first stepped part, depth are respectively greater than the width of second step ladder, depth, the width of second step ladder
Degree, depth are respectively greater than the width of third stepped part, depth；
The ridge waveguide is connect with the first stepped part far from one end of second step ladder, the extension side of the rectangular cavity of ridge waveguide
To the extending direction of the shaft centre line perpendicular to ridge structure；
The second groove is provided on the dielectric-slab bottom；
The converter section includes inverted cone-shaped probe and curved surface short board；
The inverted cone-shaped probe includes conical lower portion interconnected and probe portion, wherein conical lower portion is arranged second
It in groove, is connect with ridge waveguide, probe portion extends to outside the second groove；
The curved surface short board includes several metal throuth holes being arranged on dielectric layer, the extending direction of metal throuth hole with
Conductor side surface is vertical；
Several described metal throuth holes surround ridge waveguide equidistant arrangement, constitute an arc arms and respectively with arc arms two
Hold the first straight line arm and second straight line arm of connection, wherein first straight line arm and second straight line arm with the axis center of ridge structure
Line is parallel, and one end that first straight line arm is not connect with arc arms is connected to one end that ridge waveguide is closed in the first gap, and second is straight
One end that line arm is not connect with arc arms is connected to one end that ridge waveguide is closed in the second gap.
In further embodiment, the patch layer includes short-circuit chamber interconnected and arc-shaped bore portion；
The one end of third stepped part far from second step ladder is arranged in the arc-shaped bore portion, identical by two radiuses
Disk intersect composition.
In further embodiment, the bottom of first groove is arranged in dielectric layer.
In further embodiment, the dielectric layer has one to extend dielectric portion relative to patch layer；
The extension dielectric portion includes sequentially connected first extension, the second extension and third extension；
First extension, third extension are each parallel to the shaft centre line of ridge structure, and second extension is in circle
Arc, the second extending part is in the described arc-shaped one end of bore portion far from the face H electromagnetic horn.
In further embodiment, the ridge waveguide uses single ridge waveguide structure.
In further embodiment, there is an air between the conical lower portion side surface and dielectric-slab of the inverted cone-shaped probe
Chamber.
In further embodiment, the length of first stepped part is greater than the length of second step ladder and third stepped part
The sum of.
In further embodiment, the dielectric-slab use with a thickness of 3.175mm, dielectric constant for 2.2 Rogers
5880 are made.
In further embodiment, the radius of second conductor portion is 150mm.
Based on aforementioned antenna structure, the utility model further mentions a kind of face the conformal ultra wide band H electromagnetic horn based on SIW
Production method, which comprises
SIW technology is used to make the face the conformal ultra wide band H electromagnetic horn above-mentioned based on SIW.
Above the technical solution of the utility model, compared with existing, significant beneficial effect is:
1) the utility model realizes broadband of the electromagnetic field from SMA to ridge waveguide by back taper probe and arc-shaped short-circuit chamber
Transition.
2) the utility model, which is selected, is used as medium substrate with a thickness of 3.175mm, the Rogers 5880 that dielectric constant is 2.2,
Using SIW technology, realize that the face low section H electromagnetic horn, more existing antenna have thinner thickness and broader bandwidth, be able to achieve
The bending of structure, it is conformal in curved conductor surface.
3) the utility model widens single mode operation bandwidth, and realize ridge using stepped ridge structure by introducing ridge structure
The transition of waveguide to bell mouth diameter is realized to have and be stablized using the convex change of the smooth bell mouth diameter of arc-shaped bore and free space
The broadband face the H electromagnetic horn of directional diagram.
4) method that the utility model substitutes horn flare angle part two sides metal sidewall by gap improves current distribution,
Obtain the conformal face the H electromagnetic horn with 6.1-19GHz (VSWR < 2.5) bandwidth of operation.
5) six face conformal ultra wide band H electromagnetic horns are uniformly arranged in cylindrical conductor surface by the utility model, are realized
Total space detection.
It should be appreciated that as long as aforementioned concepts and all combinations additionally conceived described in greater detail below are at this
It can be viewed as a part of the utility model theme of the disclosure in the case that the design of sample is not conflicting.In addition, being wanted
All combinations of the theme of protection are asked to be considered as a part of the utility model theme of the disclosure.
The foregoing and other side of the utility model introduction can be more fully appreciated from the following description in conjunction with attached drawing
Face, embodiment and feature.The features and/or benefits of other additional aspects such as illustrative embodiments of the utility model
To be obvious in the following description, or will be learnt in the practice by the specific embodiment instructed according to the utility model.
Detailed description of the invention
Attached drawing is not intended to drawn to scale.In the accompanying drawings, identical or nearly identical group each of is shown in each figure
It can be indicated by the same numeral at part.For clarity, in each figure, not each component part is labeled.
Now, by by example and be described in reference to the drawings the utility model various aspects embodiment, in which:
Fig. 1 is the general structure schematic diagram of the face the conformal ultra wide band H electromagnetic horn based on SIW of the utility model.
Fig. 2 is the face the conformal ultra wide band H electromagnetic horn structural schematic diagram based on SIW of the utility model.
Fig. 3 is the single ridge waveguide structure figure based on SIW.
Fig. 4 is the structural schematic diagram of the conversion of SMA to ridge waveguide.
Fig. 5 is the standing-wave ratio test chart of the face conformal ultra wide band H electromagnetic horn.
Fig. 6 is the gain test figure of the face conformal ultra wide band H electromagnetic horn.
Fig. 7 is the normalized radiation pattern test chart of the face conformal ultra wide band H electromagnetic horn.
Fig. 8 is that the front and back of antenna radiation pattern is compared and sidelobe level test chart.
The coefficient of coup of Fig. 9 input port between antenna each unit.
Specific embodiment
In order to know more about the technology contents of the utility model, spy lifts specific embodiment and institute's accompanying drawings is cooperated to be described as follows.
Specific embodiment one
In conjunction with Fig. 1 to Fig. 4, the utility model proposes a kind of face the conformal ultra wide band H electromagnetic horn based on SIW is described total
The face shape ultra wide band H electromagnetic horn includes N number of face the conformal ultra wide band H loudspeaker of conductor and equidistant horizontal arrangement in conductor side surface
Antenna element 10.
The conductor includes the first conductor portion 21 interconnected and the second conductor portion 22, and the first conductor portion 21 is in circular cone
Type, the second conductor portion 22 are in cylindrical type, and the bottom surface of the first conductor portion 21 is identical as the top surface size of the second conductor portion 22.
There is a cavity, N number of face conformal ultra wide band H electromagnetic horn unit 10 is fixed on the by fastening part in the conductor
On the side surface of two conductor portions 22.
Preferably, the radius of second conductor portion 22 is 150mm.
The utility model on cylindrical conductor surface by equidistantly arranging six face conformal ultra wide band H electromagnetic horn units
10, realize 360 ゜ of space detection.
The face conformal ultra wide band H electromagnetic horn unit 10 includes converter section, ridge waveguide 13, the face the H loudspeaker for loading ridge structure
Antenna 11 and dielectric-slab.
The dielectric-slab includes the patch layer 14 overlapped from top to bottom along the vertical direction, dielectric layer 15, metal layer, institute
It is parallel to each other to state patch layer 14, dielectric layer 15, metal layer；
On conductor side surface, the dielectric layer 15 is pasted the dielectric-slab parallel laid by metal layer and conductor side surface
Attached to connect preferably, the dielectric-slab, which uses, to be made with a thickness of 3.175mm, dielectric constant for 2.2 Rogers 5880.
The face the H electromagnetic horn of the load ridge structure includes the first gap 112, second seam that dielectric-slab upper surface is arranged in
Gap 112 and ridge structure 113.First gap 111 and the second gap 112 are symmetricly set on 113 two sides of ridge structure, along ridge structure
113 extending direction is in horn flare angle shape.
By using the face the H electromagnetic horn 11 of loading stepped type, ridge structure 113 is introduced, single mode operation bandwidth is widened, realized
Broadband, and realize that ridge waveguide 13 arrives the transition in bell mouth diameter portion using stepped ridge structure 113.
The ridge structure 113 includes the first groove that dielectric-slab upper surface is arranged in step type, and shaft centre line prolongs
Stretch direction perpendicular to conductor side surface, ridge structure 113 include sequentially connected first stepped part 113a, second step ladder 113b,
Third stepped part 113c.
Preferably, the bottom of first groove is arranged in dielectric layer.
The width of the first stepped part 113a, depth are respectively greater than the width of second step ladder 113b, depth, second-order
The width of terraced portion 113b, depth are respectively greater than the width of third stepped part 113c, depth.
Preferably, the length of the first stepped part 113a is greater than the length of second step ladder 113b and third stepped part 113c
The sum of degree.
First gap 111 and the second gap 112 constitute the bell mouth diameter portion of the face H electromagnetic horn.
The utility model changes current distribution, changes by using the two sides metal sidewall of gap substitution horn flare angle part
Kind impedance matching, obtains the conformal face the H electromagnetic horn with 6.1-19GHz (VSWR < 2.5) bandwidth of operation.
The ridge waveguide 13 is connect with the first stepped part 113a far from one end of second step ladder 113b, the square of ridge waveguide 13
The extending direction of the shaft centre line for extending perpendicularly to ridge structure 113 of shape chamber.
Preferably, the ridge waveguide 13 uses single ridge waveguide structure, realizes broadband single mode operation by single ridge waveguide structure
Bandwidth.
The second groove is provided on 15 bottom of dielectric layer.
The converter section includes inverted cone-shaped probe 12a and curved surface short board 12b.
The inverted cone-shaped probe 12a includes conical lower portion interconnected and probe portion, wherein conical lower portion setting is the
It in two grooves, is connect with ridge waveguide 13, probe portion extends to outside the second groove.
The curved surface short board 12b includes several metal throuth holes being arranged on dielectric layer 15, the extension of metal throuth hole
Direction is vertical with conductor side surface, it is preferred that each metal throuth hole runs through dielectric-slab, convenient for production, reduces production process.
Several described metal throuth holes surround 13 equidistant arrangement of ridge waveguide, constitute an arc arms and respectively with arc arms
The first straight line arm and second straight line arm of both ends connection, wherein the axis of first straight line arm and second straight line arm with ridge structure 113
Centerline parallel, and one end for not connecting with arc arms of first straight line arm is connected to the first gap 111 and closes on the one of ridge waveguide 13
End, one end that second straight line arm is not connect with arc arms is connected to one end that ridge waveguide 13 is closed in the second gap 112.
In some instances, there is an air between the conical lower portion side surface and dielectric-slab of the inverted cone-shaped probe 12a
Chamber 16.
The utility model realizes electromagnetic wave by coaxial line using back taper probe 12a and curved surface short board 12b in broadband
To the conversion of ridge waveguide 13.
The patch layer 14 includes short-circuit chamber interconnected and arc-shaped bore portion.
The one end of third stepped part 113c far from second step ladder 113b is arranged in the arc-shaped bore portion, by two
The identical disk intersection composition of radius.Preferably, the center of circle of two disks is symmetrical arranged relative to ridge structure 113.
The utility model realizes the smoothed of low section aperture antenna and free space by using arc-shaped bell mouth diameter
It crosses, obtain broadband and improves radiation characteristic, realizing has the broadband face the H electromagnetic horn of stabilising direction figure.
Preferably, 15 lower surface of dielectric layer is provided with metal layer.
The dielectric layer 15 is attached by metal layer and conductor side surface and is connected.
In further embodiment, the dielectric layer 15 has one to extend dielectric portion relative to patch layer 14.
The extension dielectric portion includes the first extension, the second extension and third extension.
First extension, third extension are of a straight line type, each parallel to the shaft centre line of ridge structure.
Second extension is arc-shaped, positioned at the described arc-shaped one end of bore portion far from the face H electromagnetic horn.
Preferably, the width of the second extension be greater than the first extension and third extension width, the first extension and
Third extension structure is identical, is symmetricly set on 113 two sides of ridge structure.By the width for adjusting the first extension and third extension
Degree and length are to realize impedance matching.
In some instances, dielectric-slab is selected to make the face low section ultra wide band H described in the utility model based on SIW
Electromagnetic horn, dielectric-slab include dielectric layer 15 and the first metal layer and second metal layer that 15 two sides of dielectric layer are arranged in,
In, dielectric layer 15 is attached and is connected by the second metal layer and conductor side surface for being located at 15 lower section of dielectric layer, then will be located at medium
The first metal layer of 15 top of layer is fabricated to patch layer 14, and dielectric layer 15 is used as relative to the part that patch layer 14 extends to be extended
Dielectric portion.
The production method that the utility model further mentions a kind of face conformal ultra wide band H electromagnetic horn based on SIW, the method
Include:
SIW technology is used to make the aforementioned face the conformal ultra wide band H electromagnetic horn unit 10 based on SIW.
By using SIW technology, the production of the face low section H electromagnetic horn unit 10 is realized, more existing antenna has thinner
Thickness and broader bandwidth, be able to achieve the bending of structure, it is conformal in curved conductor surface.
Specific embodiment two
Fig. 1 is the engineering structure figure of the face the conformal ultra wide band H electromagnetic horn based on SIW.It is found that antenna is by SMA to ridge ripple
13 converter, stepped ridged horn, arc-shaped bore and cylindrical conductor composition are led, wherein converter is put from dielectric-slab bottom
Enter, arc-shaped bore is made of two identical circle intersections, design parameter ws=56mm, ls=78mm, w1=5mm, w2=
4mm, w3=2mm, l1=30mm, l2=4.6mm, l3=4mm, h1=2.5mm, h2=2.2mm, h3=1.7mm, wg=3.5mm,
dp=16mm, rp=2mm, R=100mm, h=3.175mm.
In conjunction with Fig. 5-Fig. 9, it can be seen that it is conformal in curved conductor platform that the utility model is able to solve the face H electromagnetic horn
Critical issue, guarantee that antenna in the case where structural bending, while having the characteristics such as ultra wide band, stable directional diagram.
It is described with reference to the various aspects of the utility model in the disclosure, shown in the drawings of the implementation of many explanations
Example.Embodiment of the disclosure need not be defined on all aspects including the utility model.It should be appreciated that a variety of structures presented hereinbefore
Think and embodiment, and those of describe in more detail below design and embodiment can in many ways in any one
Implement, this is because conception and embodiment disclosed in the utility model are not limited to any embodiment.In addition, this is practical
Novel disclosed some aspects can be used alone, or with it is disclosed by the utility model it is otherwise it is any it is appropriately combined come
It uses.
Although the utility model has been disclosed with preferred embodiment as above, so it is not intended to limit the utility model.This reality
It is without departing from the spirit and scope of the utility model, each when that can make with novel those of ordinary skill in the art
Kind changes and retouches.Therefore, the protection scope of the utility model is subject to view those as defined in claim.
Claims (9)
1. a kind of face conformal ultra wide band H electromagnetic horn based on SIW, which is characterized in that the face conformal ultra wide band H electromagnetic horn
N number of face conformal ultra wide band H electromagnetic horn unit including conductor and equidistant horizontal arrangement in conductor side surface；
The conductor includes the first conductor portion and the second conductor portion interconnected, and the first conductor portion is in pyramid type, the second conductor
Portion is in cylindrical type, and the bottom surface of the first conductor portion is identical as the top surface size of the second conductor portion；
There is a cavity, N number of face conformal ultra wide band H electromagnetic horn unit is fixed on the second conductor by fastening part in the conductor
On the side surface in portion；
The face conformal ultra wide band H electromagnetic horn unit include converter section, ridge waveguide, load ridge structure the face H electromagnetic horn and
Dielectric-slab；
The dielectric-slab includes the patch layer, dielectric layer, metal layer overlapped from top to bottom along the vertical direction, the patch
Layer, dielectric layer, metal layer are parallel to each other；
On conductor side surface, the dielectric layer is attached by metal layer and conductor side surface to be connected the dielectric-slab parallel laid
It connects；
The face the H electromagnetic horn of the load ridge structure includes the first gap, the second gap and ridge that dielectric-slab upper surface is arranged in
Structure；
First gap and the second gap are symmetricly set on ridge structure two sides, and the extending direction along ridge structure is in horn flare angle
Shape；
The ridge structure includes the first groove that dielectric-slab upper surface is arranged in step type, and the extending direction of shaft centre line is flat
For row in conductor side surface, ridge structure includes sequentially connected first stepped part, second step ladder, third stepped part；
The width of first stepped part, depth are respectively greater than the width of second step ladder, depth, the width of second step ladder,
Depth is respectively greater than the width of third stepped part, depth；
The ridge waveguide is connect with the first stepped part far from one end of second step ladder, and the extending direction of the rectangular cavity of ridge waveguide hangs down
Directly in the extending direction of the shaft centre line of ridge structure；
The second groove is provided on the dielectric-slab bottom；
The converter section includes inverted cone-shaped probe and curved surface short board；
The inverted cone-shaped probe includes conical lower portion interconnected and probe portion, wherein conical lower portion is arranged in the second groove
It is interior, it is connect with ridge waveguide, probe portion extends to outside the second groove；
The curved surface short board includes several metal throuth holes being arranged on dielectric layer, the extending direction and conductor of metal throuth hole
Side surface is vertical；
Several described metal throuth holes surround ridge waveguide equidistant arrangement, constitute an arc arms and connect respectively with arc arms both ends
The first straight line arm and second straight line arm connect, wherein first straight line arm and second straight line arm are flat with the shaft centre line of ridge structure
Row, and one end that first straight line arm is not connect with arc arms is connected to one end that ridge waveguide is closed in the first gap, second straight line arm
The one end not connecting with arc arms is connected to one end that ridge waveguide is closed in the second gap.
2. the face the conformal ultra wide band H electromagnetic horn according to claim 1 based on SIW, which is characterized in that the patch layer
Including short-circuit chamber interconnected and arc-shaped bore portion；
The one end of third stepped part far from second step ladder is arranged in the arc-shaped bore portion, by the identical circle of two radiuses
Piece intersection composition.
3. the face the conformal ultra wide band H electromagnetic horn according to claim 1 based on SIW, which is characterized in that described first is recessed
The bottom of slot is arranged in dielectric layer.
4. the face the conformal ultra wide band H electromagnetic horn according to claim 2 based on SIW, which is characterized in that the dielectric layer
Have one to extend dielectric portion relative to patch layer；
The extension dielectric portion includes sequentially connected first extension, the second extension and third extension；
Each parallel to the shaft centre line of ridge structure, second extension is arc-shaped for first extension, third extension,
Second extending part is in the described arc-shaped one end of bore portion far from the face H electromagnetic horn.
5. the face the conformal ultra wide band H electromagnetic horn according to claim 1 based on SIW, which is characterized in that the ridge waveguide
Using single ridge waveguide structure.
6. the face the conformal ultra wide band H electromagnetic horn according to claim 1 based on SIW, which is characterized in that the inverted cone-shaped
There is an air chamber between the conical lower portion side surface of probe and dielectric-slab.
7. the face the conformal ultra wide band H electromagnetic horn according to claim 1 based on SIW, which is characterized in that first rank
The length in terraced portion is greater than the sum of second step ladder and the length of third stepped part.
8. the face the conformal ultra wide band H electromagnetic horn according to claim 1 based on SIW, which is characterized in that the dielectric-slab
It uses and is made with a thickness of 3.175mm, dielectric constant for 2.2 Rogers 5880.
9. the face the conformal ultra wide band H electromagnetic horn according to claim 1 based on SIW, which is characterized in that described second leads
The radius in body portion is 150mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920051705.4U CN209150308U (en) | 2019-01-11 | 2019-01-11 | The face conformal ultra wide band H electromagnetic horn based on SIW |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920051705.4U CN209150308U (en) | 2019-01-11 | 2019-01-11 | The face conformal ultra wide band H electromagnetic horn based on SIW |
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| Publication Number | Publication Date |
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| CN209150308U true CN209150308U (en) | 2019-07-23 |
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ID=67291423
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI744934B (en) * | 2020-06-04 | 2021-11-01 | 旭德科技股份有限公司 | Waveguide structure |
-
2019
- 2019-01-11 CN CN201920051705.4U patent/CN209150308U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI744934B (en) * | 2020-06-04 | 2021-11-01 | 旭德科技股份有限公司 | Waveguide structure |
| US11764451B2 (en) | 2020-06-04 | 2023-09-19 | Subtron Technology Co., Ltd. | Waveguide structure |
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