Z-shaped waveguide and rectangular waveguide conversion structure and application
By designing a through-cavity connection structure between Z-shaped waveguides and rectangular waveguides, the problems of high loss and inflexible arrangement in the conversion between Z-shaped and rectangular waveguides were solved, achieving the effect of low-loss transition and flexible signal channel.
Patent Information
- Application Number
- CN202423245058.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-27
AI Technical Summary
How to design a transition structure between a Z-shaped waveguide and a rectangular waveguide to achieve low-loss transition, flexible arrangement of chip signal channels, and simple fabrication.
By connecting rectangular waveguides and Z-shaped waveguides to form a through cavity, the electromagnetic wave transmission direction of the rectangular waveguide is perpendicular to that of the Z-shaped waveguide, and their geometric relationship is optimized to achieve a compact and flexible signal channel arrangement.
It achieves a low-loss transition from Z-shaped waveguide to rectangular waveguide, improves the flexibility of signal channel layout, and simplifies the fabrication process.
Smart Images
Figure CN223599001U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of microwave and millimeter-wave signal transmission technology, and in particular to a Z-shaped waveguide to rectangular waveguide conversion structure and its application. Background Technology
[0002] Waveguides, as an important signal transmission medium, are widely used in various microwave and millimeter-wave devices. In the field of millimeter-wave automotive radar, the most common waveguide application is the rectangular waveguide, typically made of metal or surface-metallized plastic, with electromagnetic waves propagating in the air medium inside the metal cavity. The engineering implementation of millimeter-wave automotive radar chips involves the conversion from Z-shaped waveguides to rectangular waveguides. This is used to connect the chip's signal ports to the waveguide antenna in a low-loss, low-cost, and easily engineered manner, while arranging the chip's signal ports as closely as possible. Compared to traditional rectangular waveguide solutions, Z-shaped waveguides offer more compact and flexible multi-port arrangements; therefore, designing a conversion structure to transform a Z-shaped waveguide into a rectangular waveguide is a pressing technical problem. Utility Model Content
[0003] The purpose of this invention is to address the problems existing in the background technology by proposing a Z-shaped waveguide to rectangular waveguide conversion structure and its application, which is used to achieve a low-loss transition from Z-shaped waveguide to rectangular waveguide, while also having the advantages of flexible signal channel arrangement and simple processing of the chip.
[0004] The technical solution of this utility model is a Z-shaped waveguide to rectangular waveguide conversion structure, which includes a rectangular waveguide and a Z-shaped waveguide;
[0005] One end of the rectangular waveguide is connected to one end of the Z-shaped waveguide, and the two form a through cavity after the connection; after the connection, the electromagnetic wave transmission direction of the rectangular waveguide is perpendicular to the electromagnetic wave transmission direction of the ridge waveguide.
[0006] Preferably, the long side of the rectangular waveguide is parallel to the electromagnetic wave propagation direction of the Z-shaped waveguide, and the short side of the rectangular waveguide is perpendicular to the electromagnetic wave propagation direction of the Z-shaped waveguide.
[0007] Preferably, the rectangular waveguide is located on one side of the first protrusion of the Z-shaped waveguide extension, and the sidewall of the rectangular waveguide closest to the center of the Z-shaped waveguide is in the same plane as the sidewall of the first protrusion of the Z-shaped waveguide extension closest to the center of the Z-shaped waveguide.
[0008] Preferably, the wide side of the rectangular waveguide extends from the sidewall where the first protrusion is located in a direction away from the first protrusion and is connected to the outer side of the Z-shaped waveguide.
[0009] Preferably, the long side of the rectangular waveguide extends a certain distance from the waveguide port of the Z-shaped waveguide along the electromagnetic wave transmission direction.
[0010] Preferably, the rectangular waveguide is located at one side of the first protrusion of the Z-shaped waveguide, and the side wall where the long side of the rectangular waveguide close to the center of the Z-shaped waveguide is in the same plane as the side wall of the support section of the Z-shaped waveguide facing the second protrusion.
[0011] Preferably, the wide side of the rectangular waveguide extends from the side wall where the support section is located to the direction away from the support section, and is connected to the outer side of the Z-shaped waveguide.
[0012] Preferably, the long side of the rectangular waveguide extends a certain distance from the waveguide port of the Z-shaped waveguide along the electromagnetic wave transmission direction.
[0013] Preferably, one rectangular waveguide and one Z-shaped waveguide are combined to form a waveguide conversion structure, and a plurality of conversion structures are combined to form a multi-port fan-out structure.
[0014] The application of the conversion structure uses the waveguide conversion structure to combine a plurality of conversion structures to form a multi-port fan-out structure.
[0015] Compared with the prior art, the utility model has the following beneficial technical effects:
[0016] The utility model discloses a rectangular waveguide and a Z-shaped waveguide are combined to connect into a waveguide conversion structure, and the inside forms a through cavity after connection, and the electromagnetic wave transmission direction of the rectangular waveguide is perpendicular to the electromagnetic wave transmission direction of the ridge waveguide after connection, the long side of the rectangular waveguide is parallel to the electromagnetic wave transmission direction of the Z-shaped waveguide, and the short side of the rectangular waveguide is perpendicular to the electromagnetic wave transmission direction of the Z-shaped waveguide. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is the perspective view of the first conversion structure in the embodiment of the utility model;
[0018] Figure 2 It is the back schematic view of the first conversion structure in the embodiment of the utility model;
[0019] Figure 3 It is the bottom schematic view of the first conversion structure in the embodiment of the utility model;
[0020] Figure 4 It is the perspective view of the second conversion structure in the embodiment of the utility model;
[0021] Figure 5 It is the back schematic view of the second conversion structure in the embodiment of the utility model;
[0022] Figure 6 It is the bottom view of the second conversion structure in the embodiment of the utility model;
[0023] Figure 7 It is the perspective view of the multi-port fan-out structure in the embodiment of the utility model;
[0024] Figure 8 It is the top view of the multi-port fan-out structure in the embodiment of the utility model;
[0025] Figure 9 It is the curve graph of the insertion loss (S (2, 1)) and return loss (S (1, 1)) of embodiment 1.
[0026] Figure 10 It is the curve graph of the insertion loss (S (2, 1)) and return loss (S (1, 1)) of embodiment 2.
[0027] Fig. 1, rectangular waveguide; 2, Z-shaped waveguide; 21, second boss; 22, support end; 23, first boss; 3, waveguide conversion structure. DETAILED DESCRIPTION
[0028] Embodiment 1
[0029] As Figures 1-3 shown, the utility model provides a kind of Z-shaped waveguide and rectangular waveguide conversion structure, including rectangular waveguide 1 and Z-shaped waveguide 2;
[0030] One end of the rectangular waveguide 1 is connected with one end of the Z-shaped waveguide 2, and a through cavity is formed inside after connection;After connection, the electromagnetic wave transmission direction of the rectangular waveguide 1 is perpendicular to the electromagnetic wave transmission direction of the ridge waveguide.
[0031] In the embodiment, the long side a of the rectangular waveguide 1 is parallel to the electromagnetic wave transmission direction of the Z-shaped waveguide 2, and the short side b of the rectangular waveguide 1 is perpendicular to the electromagnetic wave transmission direction of the Z-shaped waveguide 2.And the rectangular waveguide 1 is located at the side of the first boss 23 of the Z-shaped waveguide 2 extension, and the side wall of the long side a of the rectangular waveguide 1 close to the center of the Z-shaped waveguide 2 is in the same plane with the side wall of the first boss 23 of the Z-shaped waveguide 2 extension close to the center of Z-shaped waveguide.The wide side c of the rectangular waveguide 1 extends from the side wall of the first boss 23 to the direction away from the first boss 23, and is connected with the outside of the Z-shaped waveguide 2.The long side a of the rectangular waveguide 1 extends from the waveguide port of the Z-shaped waveguide 2 along the electromagnetic wave transmission direction by 0.1-0.2 times air wavelength.
[0032] The embodiment connects and converts the Z-shaped waveguide 2 and the rectangular waveguide 1, realizes low-loss waveguide transition, and has the advantages of flexible signal channel arrangement of a chip and simple processing.
[0033] Embodiment 2
[0034] As shown in the utility model discloses a kind of Z-shaped waveguide and rectangular waveguide conversion structure, including rectangular waveguide 1 and Z-shaped waveguide 2; Figures 4-6
[0035] One end of the rectangular waveguide 1 is connected to one end of the Z-shaped waveguide 2, and a through cavity is formed inside after connection;After connection, the electromagnetic wave transmission direction of the rectangular waveguide 1 is perpendicular to the electromagnetic wave transmission direction of the ridge waveguide.
[0036] In the embodiment, unlike embodiment 1, the long side a of the rectangular waveguide 1 is parallel to the electromagnetic wave transmission direction of the Z-shaped waveguide 2, and the short side b of the rectangular waveguide 1 is perpendicular to the electromagnetic wave transmission direction of the Z-shaped waveguide 2. And the rectangular waveguide 1 is located on one side of the first boss 23 of the Z-shaped waveguide extension, and the side wall where the long side a of the two long sides a of the rectangular waveguide 1 close to the center of the Z-shaped waveguide 2 is located is in the same plane as the side wall of the support section 22 of the Z-shaped waveguide towards the second boss 21. The wide side c of the rectangular waveguide 1 extends from the side wall where the support section 22 is located to the direction away from the support section 22, and is connected to the outside of the Z-shaped waveguide 2. The long side of the rectangular waveguide 1 extends a certain distance along the electromagnetic wave transmission direction from the waveguide port of the Z-shaped waveguide 2.
[0037] In the embodiment, one rectangular waveguide 1 and one Z-shaped waveguide 2 are combined to form a waveguide conversion structure 3;Several conversion structures are combined to form a multi-port fan-out structure.
[0038] Embodiment 3
[0039] The embodiment discloses an application of a conversion structure, as shown in the utility model discloses a kind of Z-shaped waveguide and rectangular waveguide conversion structure, including rectangular waveguide 1 and Z-shaped waveguide 2; Figures 7-8 The waveguide conversion structure in embodiment 1 and embodiment 2 is simulated by three-dimensional electromagnetic simulation software, and the return loss and insertion loss are verified, as shown in Table 1.
[0040] Table 1 Performance Experiment Table
[0041]
[0042]
[0043] The embodiment of the utility model is described in detail above in combination with the drawings, but the utility model is not limited to this, and various changes can be made within the knowledge range possessed by the person skilled in the art without departing from the purpose of the utility model.
Claims
1. A Z-shaped waveguide-to-rectangular waveguide transition structure, characterized by, The rectangular waveguide (1) and the Z-shaped waveguide (2) are combined to form a waveguide conversion structure (3). One end of the rectangular waveguide (1) is connected to one end of the Z-shaped waveguide (2), and the internal space of the two is formed into a through cavity after the connection.
2. The Z-waveguide-to-rectangular waveguide transition structure of claim 1, wherein, The long side of the rectangular waveguide (1) is parallel to the electromagnetic wave transmission direction of the Z-shaped waveguide (2), and the short side of the rectangular waveguide (1) is perpendicular to the electromagnetic wave transmission direction of the Z-shaped waveguide (2).
3. The Z-waveguide-to-rectangular waveguide transition structure of claim 2, wherein, The rectangular waveguide (1) is located on one side of the first protrusion (23) of the Z-shaped waveguide (2), and the side wall on which the long side of the rectangular waveguide (1) close to the center of the Z-shaped waveguide is in the same plane as the side wall of the first protrusion (23) of the Z-shaped waveguide (2) close to the center of the Z-shaped waveguide.
4. The Z-waveguide-to-rectangular waveguide transition structure of claim 3, wherein, The wide side of the rectangular waveguide (1) extends from the side wall of the first protrusion (23) to the direction away from the first protrusion (23) and is connected to the outer side of the Z-shaped waveguide (2).
5. The Z-waveguide-to-rectangular waveguide transition structure of claim 2, wherein, The long side of the rectangular waveguide (1) extends from the waveguide port of the Z-shaped waveguide (2) along the electromagnetic wave transmission direction by 0.1-0.2 times the air wavelength.
6. The Z-waveguide-to-rectangular waveguide transition structure of claim 2, wherein, The rectangular waveguide (1) is located on one side of the first protrusion (23) of the Z-shaped waveguide, and the side wall on which the long side of the rectangular waveguide (1) close to the center of the Z-shaped waveguide (2) is in the same plane as the side wall of the support section (22) of the Z-shaped waveguide facing the second protrusion (21).
7. The Z-waveguide-to-rectangular waveguide transition structure of claim 6, wherein, The wide side of the rectangular waveguide (1) extends from the side wall of the support section (22) to the direction away from the support section (22) and is connected to the outer side of the Z-shaped waveguide (2).
8. The Z-waveguide-to-rectangular waveguide transition structure of claim 6, wherein, The long side of the rectangular waveguide (1) extends from the waveguide port of the Z-shaped waveguide (2) along the electromagnetic wave transmission direction by a certain distance.
9. The Z-waveguide-to-rectangular waveguide transition structure of claim 1, wherein, A rectangular waveguide (1) and a Z-shaped waveguide (2) are combined to form a waveguide conversion structure (3), and a plurality of conversion structures are combined to form a multi-port fan-out structure.
10. Use of a conversion structure, characterized in that The waveguide conversion structure (3) of claim 9 is used to form a multi-port fan-out structure.