Device for adjusting bandwidth of dielectric resonant waveguide
By using a combined structure of threaded through grooves, limit rings, rotating rings and spirals in a dielectric resonant waveguide, the thickness of the second impedance conversion section is achieved quickly, conveniently and accurately adjusted, and the cumbersome and accurate adjustment in the prior art is solved. Low sexual problem.
Patent Information
- Application Number
- CN202420953604.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-06
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-05-06
AI Technical Summary
In the prior art, the device for adjusting the bandwidth of the dielectric resonant waveguide is cumbersome to adjust, and the bandwidth accuracy of the adaptation after adjustment is low.
By passing through the threads, the limit ring, the rotation ring and the spiral, the thickness of the second impedance conversion section formed by the second impedance conversion cavity can be quickly and conveniently adjusted by rotating the rotation ring, and precise adjustment is achieved through the scale groove and length identification. .
The thickness of the second impedance conversion section is quickly, convenient and precisely adjusted, avoiding the problem of cumbersome adjustment and low accuracy when using tuning bolts.
Smart Images
Figure CN222530780U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of microwave radar communication, and in particular relates to a device for adjusting the bandwidth of a dielectric resonant waveguide. Background Art
[0002] In microwave and millimeter wave systems, the waveguide sealing structure solves the problem of airtightness of microwave components and provides a strong guarantee for low-loss interconnection between microwave systems. Compared with the non-resonant type, the resonant waveguide sealing structure has a narrower bandwidth, but it has the advantages of simple structure, high power capacity and easy processing. The resonant waveguide sealing structure is currently the most widely used waveguide sealing structure.
[0003] Existing literature discloses that the bandwidth can be adjusted by changing the thickness of the impedance transformation section to meet the bandwidth requirements of the high-frequency waveguide microwave system. However, the method for adjusting the thickness of the impedance transformation section in the prior art is usually to adjust it through the tuning bolts at the four corners. This adjustment method has the problems of cumbersome adjustment method, low accuracy of the bandwidth adapted after adjustment and slow adjustment. Utility Model Content
[0004] In view of the above analysis, the utility model aims to provide a device for adjusting the bandwidth of a dielectric resonant waveguide, so as to solve the problems in the prior art that the adjustment method of the device for adjusting the bandwidth of a dielectric resonant waveguide is complicated and the accuracy of the bandwidth adapted after adjustment is low.
[0005] The purpose of this utility model is mainly achieved through the following technical solutions:
[0006] The utility model provides a device for adjusting the bandwidth of a dielectric resonant waveguide, comprising a first waveguide element, a dielectric substrate mounting panel, a second waveguide element, a third waveguide element and a depth adjustment component; the dielectric substrate mounting panel for mounting a dielectric substrate is provided inside the first waveguide element, and the second waveguide element is mounted on one side of the first waveguide element, the third waveguide element is slidably connected inside the second waveguide element, and the position between the second waveguide element and the third waveguide element is adjusted by the depth adjustment component;
[0007] The depth adjustment component includes a limiting ring, a rotating ring and a spiral body. The limiting ring is rotatably connected to the rotating ring. The spiral body is fixed on the inner side of the rotating ring. The spiral body and the threaded groove of the third waveguide element are threadedly matched.
[0008] Furthermore, it also includes an anti-rotation fixing component, which includes a rotating cover, an anti-rotation limit groove and a locking protrusion; the second waveguide element is rotatably connected to one side of the rotating cover, and the other side of the rotating cover is provided with the anti-rotation limit groove to prevent the rotating ring from rotating, and the end of the rotating cover is provided with a locking protrusion that is buckled with the limit ring.
[0009] Furthermore, the first waveguide element includes a first waveguide cavity, a first impedance transformation cavity and a baffle assembly cavity which are opened in sequence, and the dielectric substrate mounting panel is fixed in the baffle assembly cavity.
[0010] Furthermore, a substrate installation groove is provided in the middle of the dielectric substrate installation panel, and a dielectric substrate is installed in the substrate installation groove.
[0011] Furthermore, a second impedance transformation cavity with two sides penetrating therethrough is provided in the middle of the second waveguide element, and the second impedance transformation cavity is slidably connected to the third waveguide element.
[0012] Furthermore, a second waveguide cavity is provided in the third waveguide element.
[0013] Furthermore, the pitch of the helix is 1 mm.
[0014] Furthermore, four sliding surfaces of the third waveguide element are provided with scale grooves, the spacing between two adjacent scale grooves on each sliding surface is 4 mm, and the positions of the first scale grooves of the four sliding surfaces in the clockwise direction increase by 1 mm along the sliding direction.
[0015] Furthermore, the surface of the rotating ring is provided with indicating vertical lines, the outer side of the limiting ring is engraved with four circumferentially distributed indicating arrows, and the surface of the second waveguide element is engraved with a length mark.
[0016] Further, the length marks on the surface of the second waveguide element in the clockwise direction are 0, 0.25, 0.5 and 0.75 respectively.
[0017] Furthermore, a positioning ear is fixed on the outer side of the limiting ring.
[0018] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:
[0019] 1. The device for adjusting the bandwidth of a dielectric resonant waveguide provided by the utility model enables the thickness of a second impedance transformation section formed by a second impedance transformation cavity to be quickly and conveniently adjusted by rotating the rotating ring through the threaded groove, the limiting ring, the rotating ring and the spiral body, thereby avoiding the problem of cumbersome and slow adjustment when using a tuning bolt.
[0020] 2. The device for adjusting the bandwidth of the dielectric resonant waveguide provided by the utility model can adjust the thickness of the second impedance transformation section accurately to 0.25 mm through the scale grooves in units of 1 mm and the length markings in units of 0.25 mm, which provides convenience while ensuring the adjustment accuracy.
[0021] 3. The device for adjusting the bandwidth of the dielectric resonant waveguide provided by the utility model has the advantages of being convenient for adjustment and being stable by setting an anti-rotation fixing component, thereby avoiding changes in the thickness of the second impedance transformation section due to contact or accidental collision.
[0022] Other features and advantages of the utility model will be described in the following description, and some will become apparent from the description, or understood by practicing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures specifically pointed out in the written description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] The accompanying drawings are only used for the purpose of illustrating specific embodiments and are not to be considered as limiting the present invention. In the entire drawings, the same reference symbols represent the same components.
[0024] Figure 1 It is a structural schematic diagram of a device for adjusting the bandwidth of a dielectric resonant waveguide according to the utility model.
[0025] Figure 2 It is a cross-sectional view of the device for adjusting the bandwidth of a dielectric resonant waveguide of the utility model.
[0026] Figure 3 It is a schematic structural diagram of the first waveguide element of the device for adjusting the bandwidth of a dielectric resonant waveguide of the utility model.
[0027] Figure 4 The utility model is a schematic diagram of the structure of the dielectric substrate installation panel of the device for adjusting the bandwidth of the dielectric resonance waveguide.
[0028] Figure 5 It is a schematic structural diagram of the second waveguide element of the device for adjusting the bandwidth of a dielectric resonant waveguide of the utility model.
[0029] Figure 6 It is a schematic structural diagram of the third waveguide element of the device for adjusting the bandwidth of a dielectric resonant waveguide of the utility model.
[0030] Figure 7 The utility model is a schematic structural diagram of a depth adjustment component of a device for adjusting the bandwidth of a dielectric resonant waveguide.
[0031] Figure 8 It is a cross-sectional view of a depth adjustment component of the device for adjusting the bandwidth of a dielectric resonant waveguide according to the utility model.
[0032] Fig. 9 It is a structural schematic diagram of the anti-rotation fixing component shown in the second embodiment in a locked state.
[0033] Fig.10It is a schematic structural diagram of the anti-rotation fixing component shown in the second embodiment in an unlocked state.
[0034] Fig.11 yes Fig.10 Enlarged view of point A in the middle.
[0035] Reference numerals:
[0036] 1. first waveguide element, 2. dielectric substrate mounting panel, 3. second waveguide element, 4. third waveguide element, 5. depth adjustment component, 6. anti-rotation fixing component;
[0037] 1a. The first waveguide cavity, 1b. The first impedance transformation cavity, 1c. The cover assembly cavity;
[0038] 2a. Substrate mounting groove;
[0039] 3a. The second impedance transformation cavity, 301. Length identification;
[0040] 4a. The second waveguide cavity, 401. The threaded groove, 402. The graduated groove;
[0041] 501. Limiting ring, 502. Positioning ear, 503. Indicating arrow, 504. Rotating ring, 505. Helix;
[0042] 601. Rotating cover plate, 602. Anti-rotation limit groove, 603. Locking protrusion. DETAILED DESCRIPTION
[0043] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention.
[0044] Embodiment 1
[0045] This embodiment provides a device for adjusting the bandwidth of a dielectric resonant waveguide, such as Figure 1 and Figure 2 , as shown, it includes a first waveguide element 1, a dielectric substrate mounting panel 2, a second waveguide element 3, a third waveguide element 4 and a depth adjustment member 5; the first waveguide element 1 is provided with the dielectric substrate mounting panel 2 for mounting the dielectric substrate, and the second waveguide element 3 is installed on one side of the first waveguide element 1, the third waveguide element 4 is slidably connected inside the second waveguide element 3, and the position between the second waveguide element 3 and the third waveguide element 4 is adjusted by the depth adjustment member 5.
[0046] like Figure 6 , Figure 7 and Figure 8As shown, the depth adjustment component 5 includes a limit ring 501, a rotating ring 504 and a spiral 505. The limit ring 501 is rotatably connected to the rotating ring 504. The spiral 505 is fixed on the inner side of the rotating ring 504. The spiral 505 is threadedly matched with the threaded groove 401 of the third waveguide element 4.
[0047] Preferably, Figure 3 As shown, the first waveguide element 1 includes a first waveguide cavity 1a, a first impedance transformation cavity 1b and a cover assembly cavity 1c which are opened in sequence, and the dielectric substrate mounting panel 2 is fixed in the cover assembly cavity 1c.
[0048] Preferably, Figure 4 As shown, a substrate mounting groove 2a is provided in the middle of the dielectric substrate mounting panel 2, and a dielectric substrate is mounted in the substrate mounting groove 2a.
[0049] Preferably, Figure 5 As shown, a second impedance transformation cavity 3 a is provided in the middle of the second waveguide element 3 with two sides penetrating therethrough, and the second impedance transformation cavity 3 a is slidably connected to the third waveguide element 4 .
[0050] The thickness of the second impedance transformation section formed by the second impedance transformation cavity 3a can be quickly and conveniently adjusted by rotating the rotating ring 504 through the threaded groove 401, the limiting ring 501, the rotating ring 504 and the spiral body 505, thereby avoiding the problem of cumbersome and slow adjustment when using the tuning bolt.
[0051] Preferably, a second waveguide cavity 4a is defined in the third waveguide element 4 .
[0052] Preferably, the pitch of the helix 505 is 1 mm.
[0053] Preferably, four sliding surfaces of the third waveguide element 4 are provided with scale grooves 402, the spacing between two adjacent scale grooves 402 on each sliding surface is 4 mm, and the positions of the first scale grooves 402 on the four sliding surfaces in the clockwise direction increase by 1 mm along the sliding direction.
[0054] Preferably, the surface of the rotating ring 504 is provided with indicating vertical lines, the outer side of the limiting ring 501 is engraved with four circumferentially distributed indicating arrows 503 , and the surface of the second waveguide element 3 is engraved with a length mark 301 .
[0055] Preferably, the length marks 301 on the surface of the second waveguide element 3 are 0, 0.25, 0.5 and 0.75 in the clockwise direction respectively.
[0056] By means of the scale groove 402 with 1 mm as the unit and the length mark 301 with 0.25 mm as the unit, the thickness of the second impedance transformation section can be adjusted accurately to 0.25 mm, which provides convenience while ensuring the adjustment accuracy.
[0057] The method for reading the thickness of the second impedance transformation section is to look directly at the four sliding surfaces. The sum of the number of scale grooves 402 visible on the four sliding surfaces is the digit of the length in mm. The length mark 301 corresponding to the nearest indicator arrow 503 in the counterclockwise direction at the position indicated by the vertical friction lines painted with indicator color is the decimal place of the length in mm.
[0058] Embodiment 2
[0059] This embodiment adds an anti-rotation fixing member 6 on the basis of the first embodiment. Figure 8 , Fig.10 and Fig.11 As shown, the device for adjusting the bandwidth of the dielectric resonant waveguide also includes an anti-rotation fixing component 6, which includes a rotating cover plate 601, an anti-rotation limiting groove 602 and a locking protrusion 603; the second waveguide element 3 is rotatably connected to one side of the rotating cover plate 601, and the other side of the rotating cover plate 601 is provided with the anti-rotation limiting groove 602 for preventing the rotating ring 504 from rotating, and the end of the rotating cover plate 601 is provided with a locking protrusion 603 that is buckled with the limiting ring 501.
[0060] The provision of the anti-rotation fixing member 6 enables the device to be conveniently adjusted while also having stability, thereby preventing the thickness of the second impedance transformation section from changing due to contact or accidental collision.
[0061] Preferably, a positioning ear 502 is fixed to the outer side of the limiting ring 501 .
[0062] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.
Claims
1. A device for adjusting the bandwidth of a dielectric resonant waveguide, characterized in that: The invention comprises a first waveguide element (1), a dielectric substrate mounting panel (2), a second waveguide element (3), a third waveguide element (4) and a depth adjustment member (5); the dielectric substrate mounting panel (2) for mounting a dielectric substrate is provided inside the first waveguide element (1), the second waveguide element (3) is mounted on one side of the first waveguide element (1), the third waveguide element (4) is slidably connected inside the second waveguide element (3), and the position between the second waveguide element (3) and the third waveguide element (4) is adjusted by the depth adjustment member (5); The depth adjustment component (5) comprises a limiting ring (501), a rotating ring (504) and a spiral body (505); the limiting ring (501) is rotatably connected to the rotating ring (504); the spiral body (505) is fixed inside the rotating ring (504); the spiral body (505) is threadably matched with the threaded groove (401) of the third waveguide element (4).
2. The device for adjusting the bandwidth of a dielectric resonant waveguide according to claim 1, characterized in that: The invention also comprises an anti-rotation fixing component (6), wherein the anti-rotation fixing component (6) comprises a rotating cover plate (601), an anti-rotation limiting groove (602) and a locking protrusion (603); the second waveguide element (3) is rotatably connected to one side of the rotating cover plate (601), the other side of the rotating cover plate (601) is provided with the anti-rotation limiting groove (602) for preventing the rotating ring (504) from rotating, and the end of the rotating cover plate (601) is provided with a locking protrusion (603) that is buckled with the limiting ring (501).
3. The device for adjusting the bandwidth of a dielectric resonant waveguide according to claim 1, characterized in that: The first waveguide element (1) comprises a first waveguide cavity (1a), a first impedance transformation cavity (1b) and a cover assembly cavity (1c) which are opened in sequence, and the dielectric substrate mounting panel (2) is fixed in the cover assembly cavity (1c).
4. The device for adjusting the bandwidth of a dielectric resonant waveguide according to claim 3, characterized in that: A substrate installation groove (2a) is provided in the middle of the dielectric substrate installation panel (2), and a dielectric substrate is installed in the substrate installation groove (2a).
5. The device for adjusting the bandwidth of a dielectric resonant waveguide according to claim 4, characterized in that: A second impedance transformation cavity (3a) with two sides penetrating therethrough is provided in the middle of the second waveguide element (3), and the second impedance transformation cavity (3a) is slidably connected to the third waveguide element (4).
6. The device for adjusting the bandwidth of a dielectric resonant waveguide according to claim 5, characterized in that: A second waveguide cavity (4a) is provided in the third waveguide element (4).
7. The device for adjusting the bandwidth of a dielectric resonant waveguide according to claim 6, characterized in that: The pitch of the helix (505) is 1 mm.
8. The device for adjusting the bandwidth of a dielectric resonant waveguide according to claim 7, characterized in that: The four sliding surfaces of the third waveguide element (4) are provided with scale grooves (402), the spacing between two adjacent scale grooves (402) on each sliding surface is 4 mm, and the positions of the first scale grooves (402) on the four sliding surfaces in the clockwise direction increase by 1 mm along the sliding direction.
9. The device for adjusting the bandwidth of a dielectric resonant waveguide according to claim 8, characterized in that: The surface of the rotating ring (504) is provided with vertical indicating lines, the outer side of the limiting ring (501) is engraved with four circumferentially distributed indicating arrows (503), and the surface of the second waveguide element (3) is engraved with a length mark (301).
10. The device for adjusting the bandwidth of a dielectric resonant waveguide according to claim 9, characterized in that: The length marks (301) on the surface of the second waveguide element (3) are 0, 0.25, 0.5 and 0.75 in the clockwise direction respectively.