CN220710608U - 350M band-pass duplexer - Google Patents
350M band-pass duplexer Download PDFInfo
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- CN220710608U CN220710608U CN202322375321.7U CN202322375321U CN220710608U CN 220710608 U CN220710608 U CN 220710608U CN 202322375321 U CN202322375321 U CN 202322375321U CN 220710608 U CN220710608 U CN 220710608U
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- 238000013016 damping Methods 0.000 claims abstract description 10
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- 239000011087 paperboard Substances 0.000 claims 1
- 230000008054 signal transmission Effects 0.000 abstract description 8
- 230000005489 elastic deformation Effects 0.000 description 5
- 230000003014 reinforcing effect Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910001374 Invar Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
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Abstract
The utility model provides a 350M band-pass duplexer, which comprises a box body, a plurality of connecting parts, an input tuning unit and an output tuning unit, wherein the box body is hollow, and an opening is arranged on one side end surface; the connecting parts are arranged in the box body, adjacent connecting parts are arranged at intervals, one side of each connecting part is connected with the inner surface of the box body, and the interior of the box body is divided into an input cavity and an output cavity which are communicated with each other; the input tuning unit and the output tuning unit are arranged at the near opening position of the box body, the input tuning unit is correspondingly arranged in the input cavity, the output tuning unit is correspondingly arranged in the output cavity, and a gap is arranged between the input tuning unit and the output tuning unit and the inner wall of the box body; the device also comprises a plurality of limiting pieces, wherein each limiting piece is correspondingly arranged in each gap, and two sides of each limiting piece are respectively abutted against the tuning unit and the inner wall of the corresponding box body, so that the damping of the tuning unit is increased, and the signal transmission quality is ensured.
Description
Technical Field
The utility model relates to the technical field of wireless communication equipment, in particular to a 350M band-pass duplexer.
Background
The duplexer is a microwave passive device designed by sharing one antenna for receiving and transmitting, has a receiving end and a transmitting end, is a three-port network, can make the receiving and transmitting channels work simultaneously, shares one antenna, and has good isolation characteristics for signals in different frequency bands.
A small UHF band-pass duplexer with the publication number of CN216413223U, which discloses that grooves are used for limiting the position of the other end of a resonant disk far away from a mounting part, a plurality of left and right grooves are also arranged at the opening of a box body, and each groove is correspondingly arranged with one end of each resonant disk far away from the mounting part; the inner surface of each resonance disk, which is close to the box body, is propped against the plane, which is close to the opening of the box body, of the groove, a gap is arranged between the side surface of each resonance disk and the side surface of the groove, and in order to further improve the signal coupling quality, the inner side wall of the box body corresponding to the groove can be formed into a U-shaped or W-shaped arc-shaped bulge.
In the prior art, the resonance plates are abutted in the grooves formed in the box body, gaps are formed between the side surfaces of the resonance plates and the side surfaces of the grooves, when the duplexer is used in a scene with larger vibration, vibration transmitted by the surrounding environment for a long time can cause the resonance plates in the duplexer to vibrate, and the signal transmission quality is affected.
Disclosure of Invention
In view of this, the utility model provides a 350M band-pass duplexer, which can increase the damping of each tuning disc, avoid the vibration of the internal tuning disc, and effectively ensure the signal transmission quality.
The technical scheme of the utility model is realized as follows: the utility model provides a 350M band-pass duplexer, which comprises a box body, a plurality of connecting parts, an input tuning unit and an output tuning unit, wherein,
the inside of the box body is hollow, and an opening is arranged on one side end face;
the connecting parts are arranged in the box body, adjacent connecting parts are arranged at intervals, one side of each connecting part is connected with the inner surface of the box body, and the interior of the box body is divided into an input cavity and an output cavity which are communicated with each other;
the input tuning unit and the output tuning unit are arranged at the near opening position of the box body, the input tuning unit is correspondingly arranged in the input cavity, the output tuning unit is correspondingly arranged in the output cavity, and a gap is arranged between the input tuning unit and the output tuning unit and the inner wall of the box body;
also comprises a plurality of limiting pieces, wherein,
each limiting piece is correspondingly arranged in each gap, and two sides of each limiting piece are respectively abutted against the tuning unit and the inner wall of the corresponding box body and used for increasing the damping of the tuning unit.
On the basis of the technical scheme, preferably, the input tuning unit and the output tuning unit are both composed of a plurality of tuning discs, each tuning disc is of a plate-shaped structure, one side of each tuning disc is arc-shaped, the other side of each tuning disc is rectangular, arc-shaped chamfers are arranged at corners of rectangular sides of the tuning discs, and two sides of the limiting piece are respectively abutted against the rectangular sides of each tuning disc and the inner wall of the corresponding box body.
On the basis of the technical scheme, preferably, the inner contour shape of the limiting piece is matched with the rectangular side outer contour shape of the tuning disc.
On the basis of the technical scheme, preferably, the limiting piece is an insulating rubber pad.
On the basis of the above technical scheme, preferably, the input tuning unit is composed of a plurality of tuning discs, the input cavity is provided with a plurality of subchambers which are communicated in sequence, each subchamber is internally provided with a mounting part fixedly, the mounting parts extend towards one side of the opening of the box body, one side close to the opening of the box body is in the same plane with the end face of the opening side of the box body, the adjacent mounting parts are arranged at intervals, each tuning disc is respectively fixed on the mounting part in the corresponding subchamber through bolts, and the height of the end face of the tuning disc away from the mounting part is lower than that of the end face of the opening side of the box body.
On the basis of the technical scheme, the device preferably further comprises two input ends and an output end, wherein the two input ends and the output end are arranged on the surface of the box body at intervals, the number of the input cavities is two, the input cavities are respectively arranged on two sides of the output cavity and correspond to the positions of the input ends, and the mounting part of one end, far away from the output cavity, of the input cavity is electrically connected with the input end; the installation part in the output cavity is electrically connected with the output end.
On the basis of the technical proposal, the utility model preferably further comprises a box plate and a plurality of fasteners, wherein,
the box plate cover is arranged at the opening of the box body, a plurality of fastening holes are formed in one side of the opening of the box body and one side of each connecting part facing the opening, and a fastening groove corresponding to the fastening hole is formed in one end face of the box plate;
each fastener penetrates through the fastening hole and extends into the corresponding fastening groove, and is in threaded connection with the fastening groove, so that the position between the box plate and the box body is fixed.
On the basis of the above technical scheme, preferably, the middle part of the box body is provided with a weight-reducing groove, one end face of the box plate is provided with a notch corresponding to the position of the weight-reducing groove, and the inner wall of the weight-reducing groove is provided with a mounting hole extending along the vertical direction of the box body.
On the basis of the technical scheme, preferably, the width of the gap is 1cm, and the thickness of the limiting piece is 1.2cm.
On the basis of the technical proposal, the device preferably further comprises an adjusting piece, wherein,
a guide part is arranged on one side of the tuning disc, which is far away from the opening of the box body, a first positioning hole penetrating through the guide part is formed in one side end surface of the tuning disc, and a second positioning hole corresponding to the first positioning hole in position is formed in one side end surface of the box plate;
the adjusting piece is arranged in the second positioning hole, one end of the adjusting piece penetrates through the second positioning hole and extends into the corresponding first positioning hole, and the coupling effect of the input signal is adjusted by changing the length of the adjusting piece extending into the first positioning hole.
Compared with the prior art, the 350M band-pass duplexer has the following beneficial effects:
(1) The damping of each tuning unit can be increased by the limiting piece which is arranged and is abutted between the tuning unit and the inner surface of the box body, so that the damping effect is achieved, the external vibration is prevented from vibrating an internal tuning disc, and the signal transmission quality is effectively ensured;
(2) The limiting piece is an insulating rubber pad, so that all tuning discs are in insulating connection with the inner wall of the box body, short circuit is avoided, meanwhile, the insulating rubber pad also has certain elastic deformation capacity, and the elastic deformation capacity of the limiting piece is abutted between all tuning discs and the inner wall of the box body, so that the stability of the structure is ensured;
(3) Through inserting a plurality of bolts respectively into mounting hole and fixed orifices to with outside installation component threaded connection, can carry out fixed mounting with its position, the fixed orifices of both sides constitutes a triangle with the mounting hole in the middle, can make the box more stable when installing.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a top view of a 350M bandpass duplexer of the utility model;
fig. 2 is a top view of a housing of the 350M bandpass duplexer of the present utility model;
fig. 3 is a top view of a connection structure between a case and a cover plate of the 350M band-pass duplexer of the present utility model;
fig. 4 is a front view of a case of the 350M band-pass duplexer of the present utility model;
fig. 5 is a side view of the tuning disk of the 350M bandpass duplexer of the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will clearly and fully describe the technical aspects of the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, are intended to fall within the scope of the present utility model.
As shown in fig. 1 to 5, the 350M band-pass duplexer of the present utility model comprises a case 1, a plurality of connection parts 2, an input tuning unit 3 and an output tuning unit 4, wherein the inside of the case 1 is hollow, and one side end face is provided with an opening; the connecting parts 2 are arranged in the box body 1, adjacent connecting parts 2 are arranged at intervals, one side of each connecting part 2 is connected with the inner surface of the box body 1, and the interior of the box body 1 is divided into an input cavity 210 and an output cavity 220 which are communicated with each other; the input tuning unit 3 and the output tuning unit 4 are both arranged at the near opening position of the box body 1, the input tuning unit 3 is correspondingly arranged in the input cavity 210, the output tuning unit 4 is correspondingly arranged in the output cavity 220, a gap 100 is arranged between the input tuning unit 3 and the output tuning unit 4 and the inner wall of the box body 1, in the embodiment, the box body 1 is a high Q value cavity, and the box body 1 can be formed by silver plating on the surfaces of invar alloy, copper alloy or aluminum alloy.
At present, in the prior art, tuning discs are abutted in grooves formed in a box body, gaps are formed between side surfaces of the tuning discs and side surfaces of the grooves, when a duplexer is used in a scene with larger vibration, vibration transmitted by surrounding environment for a long time can cause the tuning discs in the duplexer to vibrate, and the signal transmission quality is affected.
Furthermore, the embodiment further includes a plurality of limiting members 5, where each limiting member 5 is disposed in each gap 100 correspondingly, and two sides of each limiting member 5 are respectively abutted against the adjacent tuning units and the corresponding inner walls of the case 1, so as to increase damping of the tuning units.
It should be noted that, through setting up locating part 5 between tuning unit and the internal surface of box 1, can increase the damping of each tuning unit, play the effect of damping, avoid external vibration to the tuning disc of inside produce the vibration, effectually guaranteed signal transmission quality.
In this embodiment, the input tuning unit 3 and the output tuning unit 4 are each composed of a plurality of tuning discs 30, each tuning disc 30 is in a plate-shaped structure, one side of the tuning disc 30 is arc-shaped, the other side of the tuning disc 30 is rectangular, the corner of the rectangular side of the tuning disc 30 is provided with an arc chamfer, and two sides of the limiting piece 5 are respectively abutted against the rectangular side of each tuning disc 30 and the inner wall of the corresponding box body 1.
Wherein the inner contour shape of the limiting member 5 matches the rectangular side outer contour shape of the tuning disc 30.
It should be noted that, the tuning disc 30 is covered by the limiting piece 5 near the inner wall side of the box body 1, so that the size between the tuning disc 30 and the inner wall of the box body 1 can be controlled, and the consistency of signal transmission is ensured.
Specifically, the limiting piece 5 is an insulating rubber pad, so that each tuning disc 30 is in insulating connection with the inner wall of the box body 1, short circuit is avoided, the width of the gap 100 is 1cm, the thickness of the limiting piece 5 is 1.2cm, and the limiting piece 5 is made of insulating rubber, so that the limiting piece 5 has certain elastic deformation capability, and is abutted between each tuning disc 30 and the inner wall of the box body 1 through the elastic deformation capability of the limiting piece 5.
It can be understood that the material of the limiting member 5 is not only an insulating rubber material, but also a silica gel or latex material, as long as the material has insulating property and elastic deformation capability.
As a preferred embodiment, in this embodiment, the input tuning unit 3 is composed of a plurality of tuning discs 30, and the input cavity 210 has a plurality of sub-cavities 2100 that are sequentially communicated, each sub-cavity 2100 is fixedly provided with a mounting portion 6, the mounting portion 6 extends toward one side of the opening of the box 1, one side close to the opening of the box 1 is in the same plane with the end face of the opening side of the box 1, adjacent mounting portions 6 are arranged at intervals, each tuning disc 30 is fixed on the mounting portion 6 in the corresponding sub-cavity 2100 by bolts, and the height of the end face of the tuning disc 30 away from the mounting portion 6 is lower than the height of the end face of the opening side of the box 1.
It should be noted that six first groove sections are disposed on the outer side of the connection portion 2, and a second groove section is disposed at a position where the inner wall of the box 1 is opposite to each first groove section, the first groove section is disposed in an arc shape, the first groove is matched with the arc-shaped side shape of the tuning disc 30, the second groove section is rectangular, and the second groove is matched with the rectangular side shape of the tuning disc 30.
And, the output tuner unit 4 is composed of a single tuner disk 30, located in the middle region of the cabinet 1.
In addition, the embodiment further includes two input ends 7 and an output end 8, where the two input ends 7 and the output end 8 are disposed on the surface of the case 1 at intervals, the number of the input cavities 210 is two, and the input cavities are separately disposed at two sides of the output cavity 220 and correspond to the positions of the input ends 7, and the mounting portion 6 of the input cavity 210 at one end far from the output cavity 220 is electrically connected with the input ends 7; the mounting portion 6 in the output cavity 220 is electrically connected to the output terminal 8.
The two input ends 7 are symmetrically arranged with the output end 8 as a center, and the two input signals are respectively sent into the box body 1 through the two input ends, coupled in the box body 1 and then output outwards through the output end 8.
The embodiment also comprises a box plate 9 and a plurality of fasteners 10, wherein the box plate 9 is covered at the opening of the box body 1, a plurality of fastening holes 910 are formed on one side of the opening of the box body 1 and one side of each connecting part 2 facing the opening, and a fastening groove 920 corresponding to the fastening hole 910 is formed on one end face of the box plate 9; each fastener 10 penetrates through the fastening hole 910 and extends into the corresponding fastening groove 920, and is in threaded connection with the fastening groove 920, so that the position between the box plate 9 and the box body 1 is fixed.
The positions between the cabinet plate 9 and the cabinet 1 can be fixed by screwing the fasteners 10 into the fastening grooves 920 in a one-to-one correspondence, and the tuning disks 30 are provided at intervals from the cabinet plate 9 on the side away from the mounting portion 6.
In this embodiment, the middle part of the box 1 is further provided with a weight-reducing groove 930, one end surface of the box plate 9 is provided with a notch corresponding to the position of the weight-reducing groove 930, and the inner wall of the weight-reducing groove 930 is provided with a mounting hole 940 extending along the vertical direction of the box 1.
In addition, counter bores are formed in the left and right sides of the top of the box body 1, fixing holes which are communicated with each other are formed in the inner bottom wall of the counter bores, and when the box body 1 is fixed, a plurality of bolts are respectively inserted into the mounting holes 940 and the fixing holes and are in threaded connection with external mounting components, so that the positions of the mounting holes can be fixedly mounted, wherein the fixing holes in the two sides and the middle mounting holes 940 form a triangle, and the box body 1 can be more stable in position when being mounted.
The embodiment further comprises an adjusting piece 11, wherein a guide part 31 is arranged on one side of the tuning disc 30 away from the opening of the box body 1, a first positioning hole 310 penetrating through the guide part 31 is formed on one side end surface of the tuning disc 30, and a second positioning hole 320 corresponding to the first positioning hole 310 is formed on one side end surface of the box plate 9; the adjusting member 11 is disposed in the second positioning hole 320, and one end of the adjusting member extends through the second positioning hole 320 and into the corresponding first positioning hole 310, and the coupling effect of the input signal is adjusted by changing the length of the adjusting member 11 extending into the first positioning hole 310.
Specifically, the top of the box plate 9 is provided with a nut at the position of the second positioning hole 320, the adjusting member 11 is screwed in the nut and extends into the first positioning hole 310 in a penetrating manner, and the extending length can be adjusted by rotating the adjusting member 11.
In this embodiment, the structure of the box body further comprises two reinforcing portions, the reinforcing portions are arranged between the mounting portion 6 on the side, far away from the input end 7, of the input cavity 210 and the mounting portion 6 in the output cavity 220, the height of the reinforcing portions is smaller than the extending length of the mounting portion 6 towards the opening of the box body 1, and the structure reinforcing effect can be achieved through the reinforcing portions.
Working principle:
when each tuning disc 30 is installed, the limiting piece 5 is attached between each tuning disc 30 and the inner wall of the box body 1, then the tuning disc 30 and the installation part 6 are screwed tightly through bolts, the limiting piece 5 is abutted between the tuning disc 30 and the inner wall of the box body 1, the damping of each tuning disc 30 can be increased, the vibration reduction effect is achieved, and the signal transmission quality is effectively guaranteed.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (10)
1. A350M band-pass duplexer comprises a box body (1), a plurality of connecting parts (2), an input tuning unit (3) and an output tuning unit (4), wherein,
the inside of the box body (1) is hollow, and an opening is arranged on one side end face;
the connecting parts (2) are arranged in the box body (1), adjacent connecting parts (2) are arranged at intervals, one side of each connecting part (2) is connected with the inner surface of the box body (1), and the interior of the box body (1) is divided into an input cavity (210) and an output cavity (220) which are communicated with each other;
the input tuning unit (3) and the output tuning unit (4) are arranged at the near opening position of the box body (1), the input tuning unit (3) is correspondingly arranged in the input cavity (210), the output tuning unit (4) is correspondingly arranged in the output cavity (220), and a gap (100) is formed between the input tuning unit (3) and the output tuning unit (4) and the inner wall of the box body (1);
the method is characterized in that: also comprises a plurality of limiting pieces (5), wherein,
each limiting piece (5) is correspondingly arranged in each gap (100), and two sides of each limiting piece (5) are respectively abutted against the tuning unit and the inner wall of the corresponding box body (1) for adjusting the damping of the tuning unit.
2. The 350M bandpass duplexer of claim 1, wherein: the input tuning unit (3) and the output tuning unit (4) are respectively composed of a plurality of tuning discs (30), each tuning disc (30) is of a plate-shaped structure, one side of each tuning disc (30) is arc-shaped, the other side of each tuning disc is rectangular, arc-shaped chamfers are arranged at corners of rectangular sides of the tuning discs (30), and two sides of the limiting piece (5) are respectively abutted against the rectangular sides of each tuning disc (30) and the inner wall of the corresponding box body (1).
3. The 350M bandpass duplexer of claim 2, wherein: the inner contour shape of the limiting piece (5) is matched with the rectangular side outer contour shape of the tuning disc (30).
4. A 350M bandpass duplexer as recited in claim 3, wherein: the input tuning unit (3) is composed of a plurality of tuning discs (30), the input cavity (210) is provided with a plurality of subchambers (2100) which are communicated in sequence, each subchamber (2100) is internally provided with a mounting part (6) fixedly, each mounting part (6) extends towards one side of the opening of the box body (1), one side close to the opening of the box body (1) is located on the same plane with the end face of the opening side of the box body (1), the adjacent mounting parts (6) are arranged at intervals, each tuning disc (30) is respectively fixed on the corresponding mounting part (6) in the subchamber (2100) through bolts, and the end face height of the tuning disc (30) away from the mounting part (6) is lower than the end face height of the opening side of the box body (1).
5. The 350M bandpass duplexer of claim 4, wherein: the device also comprises two input ends (7) and an output end (8), wherein the two input ends (7) and the output end (8) are arranged on the surface of the box body (1) at intervals, the number of the input cavities (210) is two, the input cavities are respectively arranged on two sides of the output cavity (220) and correspond to the positions of the input ends (7), and the mounting part (6) of one end, far away from the output cavity (220), of the input cavity (210) is electrically connected with the input ends (7); the mounting part (6) in the output cavity (220) is electrically connected with the output end (8).
6. The 350M bandpass duplexer of claim 2, wherein: also comprises a box plate (9) and a plurality of fasteners (10), wherein,
the box plate (9) is arranged at the opening of the box body (1) in a covering manner, a plurality of fastening holes (910) are formed in one side of the opening of the box body (1) and one side of each connecting part (2) facing the opening, and a fastening groove (920) corresponding to the fastening holes (910) is formed in one end face of the box plate (9);
each fastener (10) penetrates through the corresponding fastening hole (910) and extends into the corresponding fastening groove (920), and is in threaded connection with the fastening groove (920), so that the position between the box plate (9) and the box body (1) is fixed.
7. The 350M bandpass duplexer of claim 6, wherein: the middle part of box (1) has seted up and has reduced heavy groove (930), the notch corresponding with the heavy groove (930) position is seted up to the terminal surface of boxboard (9), install hole (940) that extend along the vertical direction of box (1) are seted up to the inner wall of heavy groove (930).
8. The 350M bandpass duplexer of claim 1, wherein: the width of the gap (100) is 1cm, and the thickness of the limiting piece (5) is 1.2cm.
9. The 350M bandpass duplexer of claim 6, wherein: also comprises an adjusting piece (11), wherein,
a guide part (31) is arranged on one side of the tuning disc (30) far away from the opening of the box body (1), a first positioning hole (310) penetrating through the guide part (31) is formed in one side end surface of the tuning disc (30), and a second positioning hole (320) corresponding to the first positioning hole (310) in position is formed in one side end surface of the box plate (9);
the adjusting piece (11) is arranged in the second positioning hole (320), one end of the adjusting piece penetrates through the second positioning hole (320) and extends into the corresponding first positioning hole (310), and the coupling effect of an input signal is adjusted by changing the length of the adjusting piece (11) extending into the first positioning hole (310).
10. The 350M bandpass duplexer of claim 1, wherein: the limiting piece (5) is an insulating rubber pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322375321.7U CN220710608U (en) | 2023-09-01 | 2023-09-01 | 350M band-pass duplexer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322375321.7U CN220710608U (en) | 2023-09-01 | 2023-09-01 | 350M band-pass duplexer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220710608U true CN220710608U (en) | 2024-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202322375321.7U Active CN220710608U (en) | 2023-09-01 | 2023-09-01 | 350M band-pass duplexer |
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| CN (1) | CN220710608U (en) |
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- 2023-09-01 CN CN202322375321.7U patent/CN220710608U/en active Active
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