CN209822846U - Waveguide coaxial transformation structure with filtering function - Google Patents
Waveguide coaxial transformation structure with filtering function Download PDFInfo
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- CN209822846U CN209822846U CN201920380189.XU CN201920380189U CN209822846U CN 209822846 U CN209822846 U CN 209822846U CN 201920380189 U CN201920380189 U CN 201920380189U CN 209822846 U CN209822846 U CN 209822846U
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Abstract
The utility model discloses a take coaxial transform structure of filtering function's waveguide, including casing and lid, the lid in the upside of casing forms the accommodation space, wherein one end in the accommodation space is provided with the waveguide, be provided with coaxial joint at the other end of accommodation space, the inside waveguide coupling resonant cavity that forms of accommodation space, left side at waveguide coupling resonant cavity is provided with coaxial resonance post, coaxial resonance post perpendicular to lid, wherein one end and the lid of coaxial resonance post are connected, the other end and the casing of coaxial resonance post are connected, the right side of waveguide coupling resonant cavity is provided with the coupling coaxial joint, the coupling coaxial joint is connected with coaxial joint, be provided with the cavity filter in the waveguide coupling resonant cavity between coaxial resonance post and coupling coaxial joint. The utility model discloses a take coaxial transform structure of filtering function's waveguide can realize coaxial filter and coaxial converter function in an organic whole of waveguide, and small, the insertion loss is low.
Description
Technical Field
The utility model relates to a take coaxial transform structure of filtering function's waveguide belongs to microwave communication technical field.
Background
The coaxial cavity filter and the waveguide coaxial converter are key devices in high-power radars, communication equipment and electronic countermeasure equipment; the connection of the traditional coaxial cavity filter and the waveguide antenna needs to be connected with a waveguide coaxial converter in a cascade mode, and the traditional technical scheme is used by two devices; matching between devices in performance can reduce performance index and reliability of the product, such as: the indexes such as insertion loss and standing-wave ratio are deteriorated; the volume and the weight of the two products are inevitably increased due to cascade connection, and the workload of later installation and maintenance is increased; therefore, it is necessary to design and develop a product with a waveguide coaxial transformation structure having a filtering function to solve the above problems.
Disclosure of Invention
For solving the not enough of prior art, the utility model provides a take filtering function's coaxial transform structure of waveguide can realize coaxial filter and coaxial converter function in an organic whole of waveguide, and small, the insertion loss is low.
The utility model discloses the technical scheme who adopts does:
the utility model provides a take coaxial transform structure of filtering function's waveguide, including casing and lid, the lid in the upside of casing forms the accommodation space, wherein one end in the accommodation space is provided with the waveguide, be provided with coaxial joint at the other end of accommodation space, the inside waveguide coupling resonant cavity that forms of accommodation space, left side at waveguide coupling resonant cavity is provided with coaxial resonance post, coaxial resonance post perpendicular to lid, wherein one end and the lid of coaxial resonance post are connected, the other end and the casing of coaxial resonance post are connected, the right side of waveguide coupling resonant cavity is provided with the coupling coaxial joint, the coupling coaxial joint is connected with the coaxial joint, be provided with the cavity filter in the waveguide coupling resonant cavity between coaxial resonance post and the coupling coaxial joint.
Preferably, the waveguide is a rectangular waveguide.
Further preferably, the coaxial resonant column is provided with a silver coating.
Further preferably, the shell and the cover body are made of aluminum alloy materials, the aluminum alloy materials are light in weight and low in cost, and the overall quality and the manufacturing cost of the waveguide coaxial transformation structure are reduced.
Further preferably, copper foil is provided on the inner surfaces of the case and the lid.
The beneficial effects of the utility model reside in that:
the utility model provides a coaxial transform structure of waveguide has realized the function of integrating wave filter and coaxial converter of waveguide in an organic whole, and the superior performance can satisfy the high-power requirement; compact structure, whole small-size and the insertion loss is low.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the corresponding structure of embodiment 1;
FIG. 3 is a schematic diagram of the corresponding structure in embodiment 2;
the main reference numerals in the figures have the following meanings:
1. the device comprises a shell, 2, a cover body, 3, a waveguide, 4, a coaxial connector, 5, a waveguide coupling resonant cavity, 6, a coaxial resonant column, 7, a coupling coaxial connector, 8 and a cavity filter.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
Example 1: as shown in fig. 1 and 2: the utility model provides a take coaxial transform structure of filtering function's waveguide, including casing 1 and lid 2, lid 2 lid forms the accommodation space in the upside of casing 1, wherein one end in the accommodation space is provided with waveguide 3, be provided with coaxial joint 4 at the other end of accommodation space, waveguide coupling resonant cavity 5 is formed to the inside of accommodation space, left side at waveguide coupling resonant cavity 5 is provided with coaxial resonance post 6, coaxial resonance post 6 is perpendicular to lid 2, wherein one end and the lid 2 of coaxial resonance post 6 are connected, the other end and the casing 1 of coaxial resonance post 6 are connected, the right side of waveguide coupling resonant cavity 5 is provided with coupling coaxial joint 7, coupling coaxial joint 7 is connected with coaxial joint 4, be provided with cavity filter 8 in the waveguide coupling resonant cavity 5 between coaxial resonance post 6 and coupling coaxial joint 7.
Referring to fig. 1, the waveguide 3 is a rectangular waveguide.
In this embodiment, the coaxial resonant column 6 is provided with a silver plating layer.
In this embodiment, the case 1 and the lid 2 are both made of aluminum alloy materials.
In this embodiment, copper foils are provided on the inner surfaces of the case 1 and the lid 2.
In this embodiment, the cavity filter 8 is a multi-order coaxial resonant cavity coupling filter, which is a filter with an out-of-band limited transmission zero, and is usually implemented in a resonant cavity multi-coupling mode.
Referring to fig. 2, the coaxial connector 4 and the coupling coaxial connector 7 are connected by inductive coupling.
Example 2: as shown in fig. 1 and 3: the utility model provides a take coaxial transform structure of filtering function's waveguide, including casing 1 and lid 2, lid 2 lid forms the accommodation space in the upside of casing 1, wherein one end in the accommodation space is provided with waveguide 3, be provided with coaxial joint 4 at the other end of accommodation space, waveguide coupling resonant cavity 5 is formed to the inside of accommodation space, left side at waveguide coupling resonant cavity 5 is provided with coaxial resonance post 6, coaxial resonance post 6 is perpendicular to lid 2, wherein one end and the lid 2 of coaxial resonance post 6 are connected, the other end and the casing 1 of coaxial resonance post 6 are connected, the right side of waveguide coupling resonant cavity 5 is provided with coupling coaxial joint 7, coupling coaxial joint 7 is connected with coaxial joint 4, be provided with cavity filter 8 in the waveguide coupling resonant cavity 5 between coaxial resonance post 6 and coupling coaxial joint 7.
Referring to fig. 1, the waveguide 3 is a rectangular waveguide.
In this embodiment, the coaxial resonant column 6 is provided with a silver plating layer.
In this embodiment, the case 1 and the lid 2 are both made of aluminum alloy materials.
In this embodiment, copper foils are provided on the inner surfaces of the case 1 and the lid 2.
In this embodiment, the cavity filter 8 is a multi-order coaxial resonant cavity coupling filter, which is a filter with an out-of-band limited transmission zero, and is usually implemented in a resonant cavity multi-coupling mode.
Referring to fig. 3, the coaxial connector 4 and the coupling coaxial connector 7 are connected in a capacitive coupling manner.
The utility model discloses a theory of operation does: waveguide signals enter a waveguide coupling resonant cavity 5 through a waveguide 3, and waveguide signal energy is coupled to a cavity filter 8 through a coaxial resonant column 6; the multi-order coaxial resonant cavity structure in the cavity filter 8 introduces one to multiple transmission zeros outside the pass band, and the cavity filter 8 has high frequency selectivity, low insertion loss, steep stop band and wide bandwidth of the suppression frequency band; the waveguide signal passes through the cavity filter 8 and then passes through the coupling coaxial connector 7 to couple the signal energy to the coaxial connector 4, and further the waveguide coaxial conversion with the filtering function is realized.
The utility model provides a take coaxial transform structure of waveguide of filtering function has realized the function of integrating wave filter and coaxial converter of waveguide in an organic whole, and the superior performance can satisfy the high-power requirement; compact structure, whole small-size and the insertion loss is low.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (5)
1. The utility model provides a take coaxial transform structure of waveguide of filtering function which characterized in that: including casing (1) and lid (2), lid (2) lid in the upside of casing (1) forms the accommodation space, is provided with waveguide (3) in one of them one end of accommodation space, is provided with coaxial joint (4) at the other end of accommodation space, the inside of accommodation space forms waveguide coupling resonant cavity (5) the left side of waveguide coupling resonant cavity (5) is provided with coaxial resonance post (6), coaxial resonance post (6) perpendicular to lid (2), one of them one end and lid (2) of coaxial resonance post (6) are connected, the other end and the casing (1) of coaxial resonance post (6) are connected, the right side of waveguide coupling resonant cavity (5) is provided with coupling coaxial joint (7), coupling coaxial joint (7) are connected with coaxial joint (4) be provided with cavity filter in waveguide coupling resonant cavity (5) between coaxial resonance post (6) and coupling coaxial joint (7) (8).
2. A waveguide coaxial transition structure with filter function according to claim 1, characterized in that said waveguide (3) is a rectangular waveguide.
3. The coaxial waveguide transformation structure with the filtering function according to claim 1, wherein the coaxial resonant column (6) is provided with a silver coating.
4. The coaxial waveguide transformation structure with the filtering function according to claim 1, wherein the housing (1) and the cover (2) are made of aluminum alloy materials.
5. The coaxial waveguide transformation structure with the filtering function according to claim 1, wherein copper foils are disposed on the inner surfaces of the shell (1) and the cover (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920380189.XU CN209822846U (en) | 2019-03-25 | 2019-03-25 | Waveguide coaxial transformation structure with filtering function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920380189.XU CN209822846U (en) | 2019-03-25 | 2019-03-25 | Waveguide coaxial transformation structure with filtering function |
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| Publication Number | Publication Date |
|---|---|
| CN209822846U true CN209822846U (en) | 2019-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920380189.XU Active CN209822846U (en) | 2019-03-25 | 2019-03-25 | Waveguide coaxial transformation structure with filtering function |
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| CN (1) | CN209822846U (en) |
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2019
- 2019-03-25 CN CN201920380189.XU patent/CN209822846U/en active Active
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