CN211879570U - Waveguide interface structure for preventing electromagnetic wave signal leakage - Google Patents
Waveguide interface structure for preventing electromagnetic wave signal leakage Download PDFInfo
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- CN211879570U CN211879570U CN202021006786.5U CN202021006786U CN211879570U CN 211879570 U CN211879570 U CN 211879570U CN 202021006786 U CN202021006786 U CN 202021006786U CN 211879570 U CN211879570 U CN 211879570U
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Abstract
The invention provides a structure for preventing electromagnetic wave signal leakage, which comprises a standard rectangular waveguide interface, an irregular waveguide interface and a leakage-proof patch arranged on the opposite surface of the standard rectangular waveguide interface and the irregular waveguide interface, wherein the leakage-proof patch is composed of a sheet with a metalized surface, the surface is in a hole shape, the hole can penetrate through the sheet or is arranged as a blind hole, the depth of the hole is adjusted according to different electromagnetic wave frequencies, the shape can be round, square, diamond and irregular, the leakage-proof patch is connected with a flange ring physically, the leakage-proof patch adopts different pattern shapes or the same shape and is staggered and opposite, and a gap between the standard rectangular waveguide interface and the irregular waveguide interface is adjusted according to different electromagnetic wave frequencies. The waveguide interface structure for preventing electromagnetic wave signal leakage can simplify the installation error of the flange ring, inhibit the electromagnetic wave signal leakage, reduce the requirements of butt joint distance and rotation tolerance and reduce the installation requirements.
Description
Technical Field
The invention belongs to the field of electromagnetic wave signal processing, and particularly relates to a waveguide interface structure for preventing electromagnetic wave signal leakage.
Background
In the application of a millimeter wave point-to-point communication link, a host and an antenna are usually connected by a waveguide port, the common waveguide port is a standard rectangular waveguide interface, and in practical application, in order to improve the capacity of the antenna, the waveguide interface can be installed at an equipment end in two modes of 0 ° and 90 °, so that orthogonal linear polarization multiplexing is realized.
A paper "gap waveguide technology in integrated application of millimeter waves and antennas" published by the university of charlems, sweden professor for signal and system antenna set ELENA in 2013, 10 months, the web address is: http:// publications. lib. chalmers. se/records/full text/185520/185520.pdf, the paper provides an application of a mushroom-type periodic structure of a PCB to construct a waveguide structure instead of a waveguide wall, the application is developed for developing waveguide wall electromagnetic wave side leakage and cannot be directly applied to an anti-leakage mode of a waveguide port.
US patent publication No. US20190123411 discloses an interconnection arrangement for a waveguide structure and a structure for the interconnection arrangement for a waveguide structure, which, although preventing electromagnetic wave leakage to some extent, cannot effectively adapt to electromagnetic wave leakage between a shaped waveguide interface and a standard waveguide interface.
Chinese patent application No. 2019108946654 discloses a waveguide interface structure for preventing electromagnetic wave signal leakage, the technical scheme is respectively provided with a first waveguide leakage-proof plate and a second waveguide leakage-proof plate, the surfaces of the first waveguide leakage-proof plate and the second waveguide leakage-proof plate are conductive metal surfaces, the first waveguide leakage-proof plate and the second waveguide leakage-proof plate are respectively used for connecting waveguide tubes, an opening matched with the size of the waveguide tube is preset at the respective central position of the first waveguide leakage-proof plate and the second waveguide leakage-proof plate, a plurality of notches are arranged around the opening, the positions of the notches are staggered, the inclination range of the notches is 0-30 degrees, and the technical scheme is not suitable for the adaptation between a special-shaped waveguide port and a standard waveguide port.
Therefore, in order to solve the problems that the standard waveguide interface and the special-shaped waveguide interface cannot be adapted to each other and the signal leakage is serious in the prior art, it is necessary to develop a technical scheme for the electromagnetic wave signal leakage of the special-shaped waveguide interface and the standard waveguide interface.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem of electromagnetic wave signal leakage of the special-shaped waveguide interface and the standard waveguide interface, the invention provides a waveguide interface structure for preventing electromagnetic wave signal leakage, and the technical scheme of the invention is as follows:
a waveguide interface structure for preventing electromagnetic wave signal leakage comprises a standard rectangular waveguide interface and a special-shaped waveguide interface, and further comprises a leakage-proof patch arranged on the opposite surface of the standard rectangular waveguide interface and the special-shaped waveguide interface, wherein the leakage-proof patch is composed of a thin sheet with a metalized surface.
Furthermore, the surface of the leakage-proof patch is in a hole shape, and the hole can penetrate through the sheet or be a blind hole.
Further, the depth of the hole is adjusted according to different electromagnetic wave frequencies.
Further, the shape of the holes can be round, square, diamond and irregular.
Furthermore, the leakage-proof patch is connected with the flange ring physically.
Further, the leakage-proof patch is at least one.
Further, the standard rectangular waveguide interface is a WR-10 interface.
Further, the leakage-proof patches adopt different pattern shapes or the same shapes which are staggered and opposite.
Furthermore, the gap between the standard rectangular waveguide interface and the special-shaped waveguide interface is adjusted according to different electromagnetic wave frequencies.
The waveguide interface structure for preventing electromagnetic wave signal leakage can simplify the installation error of the flange ring, effectively inhibit the waveguide signal leakage, reduce the requirement of the butt joint distance and the rotation tolerance of the flange ring, reduce the installation requirement and facilitate the actual operation.
Drawings
FIG. 1: the invention discloses a waveguide interface structure installation schematic diagram for preventing electromagnetic wave signal leakage.
FIG. 2: the invention discloses a schematic diagram of relative installation positions of a special-shaped waveguide interface and a standard waveguide interface.
FIG. 3: the invention provides a cross-sectional view of a patch structure for preventing electromagnetic wave signal leakage.
FIG. 4: the invention provides a side view of a patch for preventing electromagnetic wave signals from leaking.
FIG. 5: a patch of a first embodiment of the invention is schematically illustrated.
FIG. 6: the patch size of the first embodiment of the present invention is schematically illustrated.
FIG. 7: the patch of the first embodiment of the present invention is installed in a cross-sectional view.
FIG. 8: the invention relates to a first simulation signal transmission oscillogram.
FIG. 9: the second simulation signal transmission waveform diagram of the present invention.
FIG. 10: the third simulation signal transmission waveform diagram of the present invention.
Detailed Description
Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, and while the invention will be described in connection with the preferred embodiments, it will be understood by those skilled in the art that these embodiments are not intended to limit the invention to these embodiments, but on the contrary, the invention is intended to cover alternatives, modifications and equivalents, which may be included within the spirit and scope of the invention as defined by the appended claims. Furthermore, in the following detailed description of the present invention, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, it will be apparent to those skilled in the art that the present invention may be practiced without these specific details.
Referring to fig. 1, an installation diagram of a waveguide interface structure for preventing electromagnetic wave signal leakage according to the present invention is shown, in order to adapt to installation of two waveguide interfaces at relative rotation positions, an equipment end adopts a special-shaped waveguide interface, and an antenna end adopts a standard rectangular WR-10 interface, wherein the standard interface of an antenna segment can have two installation angles α and β, wherein the angles α and β are perpendicular to each other.
It should be noted that the standard rectangular WR-10 interface may also adopt other standard rectangular waveguide interfaces, such as WR-12 interface, and the present patent does not limit this.
Referring to fig. 2, a schematic diagram of relative installation positions of the special-shaped waveguide interface and the standard waveguide interface is shown, in order to adapt to installation of two antenna rotation positions, the device end adopts the special-shaped waveguide interface, the antenna end adopts a standard rectangular interface, and the rectangular standard waveguide interface has a certain rotation angle α and a certain angle β with respect to the special-shaped waveguide interface.
When the antenna terminal columnar structure is inserted into the equipment end sleeve, the signal quality can be ensured only by fixing the antenna terminal and the equipment end through a plurality of screws for seamless assembly. When the torques of the screws are not matched, and the installation surface has dust and the like under the condition of improper installation, the electromagnetic wave signals leak at the antenna end and the equipment end interface, the transmission performance of an electromagnetic wave link is influenced, electromagnetic wave leakage needs to be restrained by adopting a certain structure optimization, the installation difficulty is reduced, and the quality of a waveguide product is ensured.
Referring to fig. 3, a cross-sectional view of the patch structure for preventing electromagnetic wave signal leakage according to the present invention,
the patch structure is divided into an upper patch structure and a lower patch structure, the first waveguide 301 and the second waveguide 302 are arranged oppositely, the leakage-proof patch 303 is arranged on the opposite surfaces of the first waveguide 301 and the second waveguide 302 respectively, the leakage-proof patch 303 can have different pattern shapes, the special-shaped waveguide port 304 is arranged at the central position of the second waveguide 302, the leakage-proof patch 303 and a flange ring (not shown in the figure) are connected in a physical connection mode of double faced adhesive tape, magnetic attraction, clamping and the like, and the antenna end can achieve the same electromagnetic connection performance under two installation configurations of conventional butt joint and 90-degree rotation.
Referring to fig. 4, the patch of the present invention is formed by a sheet with a metalized surface, one surface of the patch is in a hole shape, the hole 401 can penetrate through the sheet or be a blind hole, the depth of the hole can be adjusted according to different electromagnetic wave frequencies, the hole can be in a circular, square, diamond or irregular shape, and the connection of the fixing portion 402 can adopt physical connection methods such as double-sided tape, magnetic attraction, clamping and the like.
Referring to fig. 5, a schematic diagram of a patch and an installation of the patch according to the first embodiment of the present invention, and further referring to fig. 6, a schematic diagram of a size of the patch according to the first embodiment of the present invention, and fig. 7 a cross-sectional view of the patch according to the first embodiment of the present invention, a middle rectangle of the left patch of fig. 5 is a standard waveguide opening, the periphery of the left patch may have one or more circles of holes, the middle of fig. 5 is another shape design of the patch, and the right side of fig. 5 is an installation perspective view of two patches with different designs.
Fig. 6 is a schematic diagram of the size of the patch of the present invention, taking a shaped waveguide interface with an electromagnetic wave frequency of 71-76GHz as an example, the size of the standard waveguide opening is 3.1mm x 1.55mm, the designed patch hole depth H1=0.5mm, H2=0.2mm, the hole width C1=0.4mm, C2=0.8mm, the hole length L1=1.8mm, and L2=0.8mm, and the slot 305 in fig. 7 can be adjusted according to different electromagnetic wave frequencies so as to adapt to different application scenarios.
FIG. 8: according to the first simulation signal transmission oscillogram, when the rotation angle between the standard rectangular waveguide and the special-shaped waveguide is mismatched to +/-3 degrees, the anti-leakage patch 303 can ensure good transmission and matching of electromagnetic waves, simulation S21 transmission parameters and S11 reflection parameters keep good transmission, the electromagnetic wave leakage amount is in a controllable range, and at the moment, the gap 305 is 25 microns.
FIG. 9: according to the second simulation signal transmission oscillogram, when the X-direction moving distance of the standard rectangular waveguide and the special-shaped waveguide is +/-0.15 mm in mismatch, the anti-leakage patch 303 can ensure good transmission and matching of electromagnetic waves, simulation is that S21 transmission parameters and S11 reflection parameters keep good transmission, the electromagnetic wave leakage amount is in a controllable range, and at the moment, the gap 305 is 25 microns.
FIG. 10: according to the third simulation signal transmission oscillogram of the invention, when the Y direction of the standard rectangular waveguide and the special-shaped waveguide is moved to be +/-0.15 mm in mismatch, the leakage-proof patch 303 of the invention keeps good transmission and matching of electromagnetic waves, the simulation is that S21 transmission parameters and S11 reflection parameters keep good transmission, the leakage amount of the electromagnetic waves is in a controllable range, and the vertical distance of a gap 305 between the standard rectangular waveguide and the special-shaped waveguide is 25 mu m.
The waveguide interface structure for preventing electromagnetic wave signal leakage can simplify the installation error of the flange ring, effectively inhibit the electromagnetic wave signal leakage, reduce the requirements of butt joint distance and rotation tolerance, reduce the installation requirements and facilitate the actual operation.
Claims (9)
1. The waveguide interface structure for preventing electromagnetic wave signal leakage is characterized by comprising a standard rectangular waveguide interface and a special-shaped waveguide interface, and further comprising a leakage-proof patch arranged on the opposite surface of the standard rectangular waveguide interface and the special-shaped waveguide interface, wherein the leakage-proof patch is composed of a thin sheet with a metalized surface.
2. The waveguide interface structure for preventing electromagnetic wave signal leakage according to claim 1, wherein the surface of said leakage-preventing patch is in the shape of a hole, and the hole can be formed through a sheet or as a blind hole.
3. The waveguide interface structure for preventing electromagnetic wave signal leakage according to claim 2, wherein the depth of said hole is adjusted for different frequencies of electromagnetic waves.
4. The waveguide interface structure for preventing leakage of electromagnetic wave signals as claimed in claim 2, wherein said holes have a shape selected from the group consisting of circular, square, diamond, and irregular.
5. The waveguide interface structure for preventing leakage of electromagnetic wave signals as claimed in claim 1, wherein said leakage preventing patch is physically connected to said flange ring.
6. The waveguide interface structure for preventing leakage of electromagnetic wave signals as claimed in claim 1, wherein said leakage preventing patch is at least one.
7. The waveguide interface structure for preventing the leakage of electromagnetic wave signals as claimed in claim 1, wherein said standard rectangular waveguide interface is a WR-10 interface.
8. The waveguide interface structure for preventing leakage of electromagnetic wave signals as claimed in claim 1, wherein said leakage-preventing patches are alternately arranged in different pattern shapes or in the same shape.
9. The waveguide interface structure for preventing electromagnetic wave signal leakage according to claim 1, wherein a vertical distance of a gap between the standard rectangular waveguide interface and the special-shaped waveguide interface is adjusted according to different electromagnetic wave frequencies.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111509337A (en) * | 2020-06-04 | 2020-08-07 | 盛纬伦(深圳)通信技术有限公司 | Waveguide interface structure for preventing electromagnetic wave signal leakage |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111509337A (en) * | 2020-06-04 | 2020-08-07 | 盛纬伦(深圳)通信技术有限公司 | Waveguide interface structure for preventing electromagnetic wave signal leakage |
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