Ultra-thin waveguide power divider based on waveguide slot antenna

Abstract

The invention relates to an ultra-thin waveguide power divider based on a waveguide slot antenna, and the ultra-thin waveguide power divider comprises U-shaped waveguides which are located at the first layer and the second layer of the whole waveguide power divider, and the bottom of each U-shaped waveguide is provided with a connecting outer core; the two convex ridge waveguides are located on the second layer and the third layer of the whole waveguide power divider, and the bottoms of the two convex ridge waveguides are fixedly connected with the two sides of the top of the U-shaped waveguide respectively; and the two concave ridge waveguides are positioned on the fourth layer of the waveguide power divider, and the bottoms of the concave ridge waveguides are fixedly connected with the tops of the two convex ridge waveguides respectively. The invention provides an ultra-thin waveguide power divider based on a waveguide slot antenna. The ultra-thin waveguide power divider can solve the problems that an existing waveguide power divider is large in size and high in machining cost.

Description

Technical Field

[0001] The present application relates to the technical field of radio communication equipment, and in particular to an ultra-thin waveguide power divider based on a waveguide slot antenna. Background Art

[0002] Waveguide power splitter is an extremely important microwave component, which can split one power path into two and send them to different paths, or combine two powers into one power path to obtain greater power. It is mainly used in microwave communication, radar system and other fields with high requirements for high-frequency performance. It is favored for its excellent characteristics such as low loss, high power capacity and wide transmission bandwidth. In microwave relay communication, waveguide power splitter is used to distribute the power of microwave signals to different transmission lines or antennas; in radar transmitters and receivers, waveguide power splitter can effectively distribute and process high-frequency microwave signals and improve the performance of radar systems.

[0003] In the prior art, a ridge waveguide power divider, such as the one disclosed in CN115911801A, improves the bandwidth of the ridge waveguide power divider by using a first-stage ridge waveguide power divider, a second-stage ridge waveguide power divider and a ridge waveguide-microstrip probe conversion structure. However, like the traditional waveguide power divider, it has the technical problems of large size, high processing cost and inconvenient integration.

[0004] Therefore, it is necessary to improve one or more problems existing in the above-mentioned related technical solutions.

[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0006] The purpose of the embodiments of the present disclosure is to provide an ultra-thin waveguide power divider based on a waveguide slot antenna, thereby overcoming one or more problems caused by the limitations and defects of the related art at least to a certain extent.

[0007] In a first aspect, the present application provides an ultra-thin waveguide power divider based on a waveguide slot antenna, comprising:

[0008] A U-shaped waveguide, located at the first and second layers of the waveguide power divider as a whole, with a connecting outer core at the bottom;

[0009] Two ridge waveguides are located on the second and third layers of the waveguide power divider, and the bottoms are fixedly connected to the two sides of the top of the U-shaped waveguide respectively;

[0010] The two concave ridge waveguides are located on the fourth layer of the entire waveguide power divider, and the bottoms are fixedly connected to the tops of the two convex ridge waveguides respectively.

[0011] In a possible implementation, the U-shaped waveguide includes: a first U-shaped waveguide component, a second U-shaped waveguide component and a connected outer core;

[0012] The connecting outer core is arranged through the bottom of the first U-shaped waveguide component;

[0013] The second U-shaped waveguide component is U-shaped and fixedly connected to the top of the first U-shaped waveguide component, wherein the first U-shaped waveguide component is in communication with the second U-shaped waveguide component.

[0014] In a possible implementation, one end of the top of the first U-shaped waveguide component has a connecting inner core, and the second U-shaped waveguide component has a through hole at the center of the U shape, and the connecting inner core is inserted into the through hole.

[0015] In a possible implementation, the convex ridge waveguide includes: a first convex ridge waveguide component, a second convex ridge waveguide component and two third convex ridge waveguide components;

[0016] The bottom of the second convex ridge waveguide component is fixedly connected to the first convex ridge waveguide component; the two ends of the second convex ridge waveguide component are respectively fixedly connected to two third convex ridge waveguide components;

[0017] One end of the first ridge waveguide component of the two ridge waveguides is fixedly connected to the two ends of the U-shape of the second U-shaped waveguide component respectively.

[0018] In a possible implementation manner, the tops of the second convex ridge waveguide component and the third convex ridge waveguide component both have a strip-shaped protrusion, the bottom of the concave ridge waveguide has a groove, and the strip-shaped protrusion engages with the groove.

[0019] In a possible embodiment, the second ridge waveguide component has a convex strip inside, the bottom of the second ridge waveguide component has a corresponding first H-shaped gap, and the convex strip has a second H-shaped gap corresponding to the first H-shaped gap; the ridge of the first ridge waveguide component and the top of the shell have a third H-shaped gap and a fourth H-shaped gap corresponding to the first H-shaped gap, respectively.

[0020] In a possible implementation, each of the two third convex ridge waveguide components of the convex ridge waveguide has a fifth H-shaped gap at one end away from the second convex ridge waveguide component; and each part of the concave ridge waveguide has a sixth H-shaped gap on the groove corresponding to the fifth H-shaped gap.

[0021] In a possible implementation manner, a depth of the sixth H-shaped gap is greater than a depth of the groove.

[0022] In a possible embodiment, the overall thickness of the waveguide power divider is 11.1 mm, the first U-shaped waveguide component and the second U-shaped waveguide component are ridge waveguides, the wide side of the inner cavity of each layer of the ridge waveguide is 10 mm, and the narrow side is 1.7 mm, the U-shaped ridge width of the second layer of ridge waveguide is 4 mm, and the ridge height is 1.3 mm; the diameter of the connecting inner core is 3 mm.

[0023] In a possible implementation manner, a gap exists between the top of the connecting inner core and the top of the second U-shaped waveguide component.

[0024] The technical solution provided by this application may have the following beneficial effects:

[0025] Through the above technical solution, the present application can compress the wide side of the waveguide magic T to form a narrow-side ridge waveguide, and then use the four-layer waveguide structure of the convex ridge waveguide, concave ridge waveguide and U-shaped power divider of the present application to ensure the one-to-eight function while having the technical effect of small size, low processing cost and easy integration, thereby overcoming the technical problems of large application volume and high processing cost in the prior art.

[0026] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification are used to explain the principles of the present disclosure. Obviously, the accompanying drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0028] Figure 1 A schematic structural diagram of an ultra-thin waveguide power divider based on a waveguide slot antenna in an exemplary embodiment of the present disclosure is shown;

[0029] Figure 2 A side view of an ultra-thin waveguide power divider based on a waveguide slot antenna in an exemplary embodiment of the present disclosure is shown;

[0030] Figure 3 A schematic structural diagram showing the bottom of an ultra-thin waveguide power divider based on a waveguide slot antenna in an exemplary embodiment of the present disclosure;

[0031] Figure 4 A schematic cross-sectional view of a side surface of an ultra-thin waveguide power divider based on a waveguide slot antenna in an exemplary embodiment of the present disclosure is shown;

[0032] Figure 5A schematic side cross-sectional view of the second to fourth layers of an ultra-thin waveguide power divider based on a waveguide slot antenna in an exemplary embodiment of the present disclosure is shown;

[0033] Figure 6 A schematic diagram showing the structure of the first H-shaped slot of the third ridge waveguide component of the ultra-thin waveguide power divider based on the waveguide slot antenna in the exemplary embodiment of the present disclosure;

[0034] Figure 7 A schematic structural diagram of a U-shaped waveguide of an ultra-thin waveguide power divider based on a waveguide slot antenna in an exemplary embodiment of the present disclosure is shown;

[0035] Figure 8 A schematic diagram showing the structure of the connection between the first ridge waveguide component and the U-shaped waveguide of the ultra-thin waveguide power divider based on the waveguide slot antenna in the exemplary embodiment of the present disclosure;

[0036] Fig. 9 A schematic structural diagram showing the connection between a concave ridge waveguide and a second convex ridge waveguide component of an ultra-thin waveguide power divider based on a waveguide slot antenna in an exemplary embodiment of the present disclosure;

[0037] Fig.10 A schematic structural diagram of the second H-shaped slot of an ultra-thin waveguide power divider based on a waveguide slot antenna in an exemplary embodiment of the present disclosure is shown.

[0038] Reference numerals:

[0039] 100, U-shaped waveguide, 110, first U-shaped waveguide component, 111, connected to the inner core, 120, second U-shaped waveguide component, 121, through hole, 130, connected to the outer core;

[0040] 200, ridge waveguide, 210, first ridge waveguide component, 211, third H-shaped slot, 220, second ridge waveguide component, 221, convex strip, 222, first H-shaped slot, 223, second H-shaped slot, 230, third ridge waveguide component;

[0041] 300. concave ridge waveguide, 310. groove, 320. sixth H-shaped gap. DETAILED DESCRIPTION

[0042] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that the disclosure will be more comprehensive and complete and to fully convey the concepts of the example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0043] In addition, the accompanying drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the figures represent the same or similar parts, and their repeated description will be omitted. Some of the block diagrams shown in the accompanying drawings are functional entities and do not necessarily correspond to physically or logically independent entities. These functional entities can be implemented in software form, or implemented in one or more hardware modules or integrated circuits, or implemented in different networks and / or processor devices and / or microcontroller devices.

[0044] In this exemplary embodiment, an ultra-thin waveguide power divider based on a waveguide slot antenna is first provided. Figure 1-10 As shown in , the power divider as a whole is four layers, including: a U-shaped waveguide 100, located at the first and second layers of the waveguide power divider as a whole, and having a connecting outer core 130 at the bottom;

[0045] Two ridge waveguides 200 are located at the second and third layers of the waveguide power divider, and the bottoms are fixedly connected to the two sides of the top of the U-shaped waveguide 100 respectively;

[0046] The two concave ridge waveguides 300 are located on the fourth layer of the entire waveguide power divider, and their bottoms are fixedly connected to the tops of the two convex ridge waveguides 200 respectively.

[0047] Through the above-mentioned ultra-thin waveguide power divider based on waveguide slot antenna, the wide side of the conventional waveguide magic T can be compressed to form a ridge waveguide, the inner core and the H-shaped coupling slot are connected through a quasi-coaxial structure, and the U-shaped folded waveguide, the concave ridge waveguide and the convex ridge waveguide are connected and connected to form a four-layer one-to-eight power divider as a whole, thereby realizing an ultra-thin and compact structure to meet the assembly requirements of array antennas with small spacing in a cramped and narrow space.

[0048] In one embodiment, the U-shaped waveguide 100 comprises: a first U-shaped waveguide component 110, a second U-shaped waveguide component 120 and a connecting outer core 130;

[0049] The connecting outer core 130 is disposed through the bottom of the first U-shaped waveguide component 110;

[0050] The second U-shaped waveguide component 120 is U-shaped and fixedly connected to the top of the first U-shaped waveguide component 110 , wherein the first U-shaped waveguide component 110 is in communication with the second U-shaped waveguide component 120 .

[0051] Optionally, the connecting outer core 130 is an SMP connector.

[0052] It should be noted that the use of the U-shaped waveguide can make the final feeding position located at the center of the array surface.

[0053] In one embodiment, one end of the top of the first U-shaped waveguide component 110 has a connecting inner core 111 , and the second U-shaped waveguide component 120 has a through hole 121 at the center of the U shape, and the connecting inner core 111 is inserted into the through hole 121 .

[0054] There is a gap between the top of the connecting inner core 111 and the top of the second U-shaped waveguide component 120 .

[0055] It should be noted that the connecting inner core 111 is a microwave transmission line structure, and the first U-shaped waveguide component 110 is connected to the second U-shaped waveguide component 120 through the connecting inner core 111 at the top of the first U-shaped waveguide component 110 and the through hole 121 of the second U-shaped waveguide component 120, so as to achieve communication between the first U-shaped waveguide component 110 and the second U-shaped waveguide component 120.

[0056] In one embodiment, the convex ridge waveguide 200 includes: a first convex ridge waveguide component 210, a second convex ridge waveguide component 220 and two third convex ridge waveguide components 230;

[0057] The bottom of the second convex ridge waveguide component 220 is fixedly connected to the first convex ridge waveguide component 210; the two ends of the second convex ridge waveguide component 220 are respectively fixedly connected to two third convex ridge waveguide components 230;

[0058] One end of the first ridge waveguide component 210 of the two ridge waveguides 200 is fixedly connected to the two ends of the U-shape of the second U-shaped waveguide component 120 respectively.

[0059] It should be noted that the connecting line that fixedly connects the first ridge waveguide component 210 of the lower layer of the ridge waveguide 200 and the U-shaped ends of the second U-shaped waveguide component 120 is aligned with the connecting line that fixedly connects one end of the second ridge waveguide component 220 and the third ridge waveguide component 230.

[0060] Optionally, the second convex ridge waveguide component 220 and the third convex ridge waveguide component 230 both have a strip-shaped protrusion at the top, and the concave ridge waveguide 300 has a groove 310 at the bottom, and the strip-shaped protrusion is engaged with the groove 310 .

[0061] It should be noted that the protrusions on the top of the two third convex ridge waveguide components 230 and the second convex ridge waveguide component 220 are located on the same straight line, have the same height and width, and cooperate with the groove 310 at the bottom of the concave ridge waveguide 300.

[0062] Optionally, the concave ridge waveguide 300 is divided into two parts, and the grooves 310 of the two parts are located on the same straight line.

[0063] It should be noted that the convex-ridge waveguide 200 and the concave-ridge waveguide 300 use a 3dB coupler to achieve a one-to-two power division function.

[0064] In one embodiment, the second ridge waveguide component 220 has a convex strip 221 inside, and the bottom of the second ridge waveguide component 220 has a corresponding first H-shaped gap 222, and the convex strip 221 has a second H-shaped gap 223 corresponding to the first H-shaped gap 222; the first ridge waveguide component 210 has a third H-shaped gap 211 and a fourth H-shaped gap corresponding to the first H-shaped gap 222 on the ridge and the top of the shell, respectively.

[0065] It should be noted that the first H-shaped slot 222 and the second H-shaped slot 223 correspond to the H-shaped coupling slot of the second ridge waveguide component 220, the third H-shaped slot 211 and the fourth H-shaped slot correspond to the H-shaped coupling slot of the first ridge waveguide component 210, and the H-shaped coupling slot of the second ridge waveguide component 220 is aligned with the H-shaped coupling slot of the first ridge waveguide component 210, thereby realizing the connection between the first ridge waveguide component 210 and the second ridge waveguide component 220.

[0066] Furthermore, each of the two third convex ridge waveguide components 230 of the convex ridge waveguide 200 has a fifth H-shaped gap at one end away from the second convex ridge waveguide component 220; and each part of the concave ridge waveguide 300 has a sixth H-shaped gap 320 corresponding to the fifth H-shaped gap on the groove 310.

[0067] It should be noted that the fifth H-shaped gap is the H-shaped coupling gap of the third convex ridge waveguide component 230, and the sixth H-shaped gap 320 is the H-shaped coupling gap of the concave ridge waveguide 300. The H-shaped coupling gap of the third convex ridge waveguide component 230 is aligned with the H-shaped coupling gap of the concave ridge waveguide 300, thereby realizing the connectivity between the convex ridge waveguide 200 and the concave ridge waveguide 300.

[0068] It should be noted that there is a 180-degree phase difference at both ends of the one-to-two power divider using a 3dB coupler. However, the rear-end waveguide uses an H-shaped coupling slot for radiation. The 180-degree phase difference can be offset by the position of the wide-side slot, so it has no effect.

[0069] Furthermore, the depth of the sixth H-shaped gap 320 is greater than the depth of the groove 310 .

[0070] Optionally, in one embodiment, the overall thickness of the waveguide power divider is 11.1 mm, the first U-shaped waveguide component 110 and the second U-shaped waveguide component 120 are ridge waveguides, the wide side of the inner cavity of each layer of the ridge waveguide is 10 mm and the narrow side is 1.7 mm, the U-shaped ridge width of the second layer of ridge waveguide is 4 mm and the ridge height is 1.3 mm; the diameter of the connecting inner core 111 is 3 mm.

[0071] It should be noted that, through the structure of the waveguide power divider of the present application, the one-to-eight waveguide component can achieve the above-mentioned ultra-thin and compact size.

[0072] In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present disclosure.

[0073] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present disclosure, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0074] In the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0075] In the present disclosure, unless otherwise expressly specified and limited, a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being “above”, “above”, and “above” a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0076] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0077] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any modification, use or adaptation of the present disclosure, which follows the general principles of the present disclosure and includes common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the appended claims.

Claims

1. An ultra-thin waveguide power divider based on a waveguide slot antenna, characterized in that: The waveguide power divider is composed of four layers, including: A U-shaped waveguide, located at the first and second layers of the waveguide power divider as a whole, with a connecting outer core at the bottom; Two ridge waveguides are located on the second and third layers of the waveguide power divider, and the bottoms are fixedly connected to the two sides of the top of the U-shaped waveguide respectively; The two concave ridge waveguides are located on the fourth layer of the entire waveguide power divider, and the bottoms are fixedly connected to the tops of the two convex ridge waveguides respectively.

2. The ultra-thin waveguide power divider based on the waveguide slot antenna according to claim 1, characterized in that: The U-shaped waveguide comprises: a first U-shaped waveguide component, a second U-shaped waveguide component and a connecting outer core; The connecting outer core is arranged through the bottom of the first U-shaped waveguide component; The second U-shaped waveguide component is U-shaped and fixedly connected to the top of the first U-shaped waveguide component, wherein the first U-shaped waveguide component is in communication with the second U-shaped waveguide component.

3. The ultra-thin waveguide power divider based on the waveguide slot antenna according to claim 2, characterized in that: One end of the top of the first U-shaped waveguide component is provided with a connecting inner core, and the second U-shaped waveguide component is provided with a through hole at the center of the U shape, and the connecting inner core is penetrated in the through hole.

4. The ultra-thin waveguide power divider based on waveguide slot antenna according to claim 2, characterized in that: The convex ridge waveguide comprises: a first convex ridge waveguide component, a second convex ridge waveguide component and two third convex ridge waveguide components; The bottom of the second convex ridge waveguide component is fixedly connected to the first convex ridge waveguide component; the two ends of the second convex ridge waveguide component are respectively fixedly connected to two third convex ridge waveguide components; One end of the first ridge waveguide component of the two ridge waveguides is fixedly connected to the two ends of the U-shape of the second U-shaped waveguide component respectively.

5. The ultra-thin waveguide power divider based on waveguide slot antenna according to claim 4, characterized in that: The tops of the second convex ridge waveguide component and the third convex ridge waveguide component are both provided with a strip-shaped protrusion, and the bottom of the concave ridge waveguide is provided with a groove, and the strip-shaped protrusion is engaged with the groove.

6. The ultra-thin waveguide power divider based on waveguide slot antenna according to claim 5, characterized in that: The second ridge waveguide component has a convex strip inside, and the bottom of the second ridge waveguide component has a corresponding first H-shaped gap, and the convex strip has a second H-shaped gap corresponding to the first H-shaped gap; the ridge of the first ridge waveguide component and the top of the shell have a third H-shaped gap and a fourth H-shaped gap corresponding to the first H-shaped gap respectively.

7. The ultra-thin waveguide power divider based on waveguide slot antenna according to claim 6, characterized in that: The two third convex ridge waveguide components of each of the convex ridge waveguides have a fifth H-shaped gap at one end away from the second convex ridge waveguide component; and the groove of each part of the concave ridge waveguide has a sixth H-shaped gap corresponding to the fifth H-shaped gap.

8. The ultra-thin waveguide power divider based on waveguide slot antenna according to claim 7, characterized in that: The depth of the sixth H-shaped gap is greater than the depth of the groove.

9. The ultra-thin waveguide power divider based on waveguide slot antenna according to claim 2, characterized in that: The overall thickness of the waveguide power divider is 11.1 mm. The first U-shaped waveguide component and the second U-shaped waveguide component are ridge waveguides. The wide side of the inner cavity of each layer of the ridge waveguide is 10 mm and the narrow side is 1.7 mm. The U-shaped ridge width of the second layer of ridge waveguide is 4 mm and the ridge height is 1.3 mm. The diameter of the connecting inner core is 3 mm.

10. The ultra-thin waveguide power divider based on waveguide slot antenna according to claim 3, characterized in that: A gap is formed between the top of the connecting inner core and the top of the second U-shaped waveguide component.

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