Adjustable fly rod, filter and duplexer

Abstract

The utility model discloses an adjustable fly rod, a filter and a duplexer in the technical field of communication radio frequency, and aims to solve the problem of fly rod adjustment in the prior art, the adjustable fly rod comprises a fly rod sheet, a base, a screw rod and a nut, one end face of the screw rod is provided with the fly rod sheet and the base, and the fly rod sheet is arranged between the base and the screw rod; the device further comprises a fastening screw, the fastening screw sequentially penetrates through the screw hole in the base, the screw hole in the fly rod piece and the screw hole in the end face of the screw rod, the fly rod piece and the base are installed on the end face of the screw rod, and the nut is arranged on the screw rod from the other end of the screw rod and used for installing the screw rod on the device cover plate. The adjustable fly rod is simple in structure and convenient to operate, the fly rod is installed on one end face of the screw rod through the base and the fastening screw, when the adjustable fly rod is used, the relative position of the fly rod piece is adjusted by rotating the screw rod, and adjustment can be achieved without detaching a device cover plate.

Description

TECHNICAL FIELD

[0001] The utility model relates to communication radio frequency technical field especially relates to an adjustable fly rod, filter and duplexer. BACKGROUND

[0002] The fly rod used in the filter and the duplexer is generally straight bar or dumbbell, and such fly rod is easily affected by the tolerance of the cavity, the resonant rod and other related devices, so that the zero point generated by the fly rod is strong or weak, which leads to frequent disassembly of the cavity for adjusting the size in the production debugging process, thereby increasing the working hours; and the cavity screw hole is easily slided, the wire is easily clamped, and the short pin is easily caused in the disassembly process.

[0003] In the patent with the application number of "CN201820135780.4" and the patent name of "adjustable fly rod structure and filter", the fly rod structure is adjusted without disassembling the filter cover plate, the fly rod body is connected with the coupling adjusting part, the fly rod body is adjusted by adjusting the coupling adjusting part, and the connection between the coupling adjusting part and the fly rod body may be loose in the use process, and the structure is relatively complex. UTILITY MODEL CONTENT

[0004] The utility model discloses a kind of adjustable fly rod, filter and duplexer, can be adjusted screw rod directly to thereby internal fly rod piece, without disassembling device cover plate.

[0005] To solve the above technical problems, the following technical solutions are adopted:

[0006] Firstly, the utility model provides a kind of adjustable fly rod, including fly rod piece, base, screw rod and nut, one end of the screw rod is equipped with fly rod piece and base, the fly rod piece is arranged between base and screw rod;

[0007] It further includes fastening screw, the fastening screw passes through screw hole on base, screw hole on fly rod piece and screw hole on the end face of screw rod in sequence, fly rod piece and base are installed on the end face of screw rod, the nut is set on screw rod from another end of screw rod, for installing screw rod device cover plate.

[0008] Optionally, the screw rod, the base and the fastening screw are made of insulating material.

[0009] Optionally, the fly rod piece is U-shaped, the U-shaped opening faces away from the end face of the screw rod, the middle part of the fly rod piece is installed between the screw rod and the base by the fastening screw, and the two side edges of the fly rod piece.

[0010] Optionally, the fastening screw is coated with fastening glue.

[0011] Optionally, the base is rectangular, and the width of the base is greater than the width of the fly rod piece.

[0012] Optionally, the material of the flying bar piece includes any one of copper, silver and brass alloy.

[0013] In a second aspect, the utility model provides a filter, including cover plate and cavity, be equipped with the first aspect any one adjustable flying bar of the utility model on the cover plate, the cover plate with the cavity cooperation connection, the screw rod is equipped with the one end of flying bar piece is located in the cavity, be equipped with a plurality of parallel resonant column in the cavity, the flying bar piece is equipped between two parallel resonant columns, through the other end of screw rod adjustment the relative position of flying bar piece and resonant column.

[0014] In a third aspect, the utility model provides a duplexer, including the adjustable flying bar of the first aspect any one.

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] The adjustable flying bar provided by the utility model has simple structure and convenient operation, the flying bar is installed on one end face of the screw rod through the base and the fastening screw, in use, the relative position of the flying bar piece is adjusted by rotating the screw rod, and adjustment can be realized without disassembling the device cover plate. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is one of the whole structure schematic diagram of the adjustable flying bar in the embodiment of the utility model;

[0018] Figure 2 is the second whole structure schematic diagram of the adjustable flying bar in the embodiment of the utility model;

[0019] Figure 3 is the structure schematic diagram of the adjustable flying bar installed on the cover plate in the embodiment of the utility model;

[0020] Figure 4 is the structure schematic diagram of the filter or duplexer installed with the adjustable flying bar in the embodiment of the utility model.

[0021] Explanation of reference signs:

[0022] 1, base;2, flying bar piece;3, threaded stud;4, nut;5, fastening screw;6, resonant column. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model, obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the utility model and its application or use.

[0024] Example 1

[0025] like Figures 1-2 As shown, this embodiment provides an adjustable fly stick, including a screw 3 and a fly stick plate 2. One end of the screw 3 is fixed to the fly stick plate 2 via a base 1, and a fastening screw 5 is fixed to the other end of the base 1. Fastening adhesive is applied to the fastening screw 5 to strengthen the fixation of the fly stick plate 2.

[0026] The fly rod 2 is U-shaped, with the U-shaped opening facing away from the end face of the screw 3. The base 1 is rectangular, and screw holes for cooperating with fastening screws 5 are provided in the middle of the base 1, the middle of the fly rod 2, and the end face of the screw 3. Fastening glue is evenly applied to the mounting surface of the fastening screw 5, and then the fly rod 2 is firmly installed at the end of the screw 3 by passing through the screw holes of the base 1, the screw holes of the fly rod 2, and the screw holes of the end face of the screw 3 in sequence.

[0027] The screw 3 is mounted on the device cover plate by the nut 4. When it is necessary to adjust the position of the end fly rod plate 2, loosen the nut 4 and rotate the screw 3 to adjust the fly rod plate 2 at the bottom of the screw 3.

[0028] The fly rod 2 is made of conductive material, which can be one of copper, silver or brass alloy. The base 1, fastening screw 5 and screw 3 are all made of insulating material. The nut 4 is made of 304 stainless steel.

[0029] When installing the fly rod on the device, the specific steps are as follows: Separate the adjustable fly rod assembly, screw 3 and nut 4. The cover plate on the device has holes that mate with screw 3, and internal threads that mate with the screw 3. Clean the cover plate, screw the end of screw 3 without the fly rod piece 2 through the functional surface of the cover plate from the top. After determining the position of the fly rod piece 2, fix it to the cover plate with nut 4 on the opposite side of the functional surface of the cover plate. After cleaning the cavity, place the cover plate with the pre-installed fly rod on the cavity, adjust the position of the fly rod appropriately, and then fix the cover plate to the cavity with the fastening screw. During the debugging process, if the suppression is not good due to the strength of the fly rod piece 2, remove nut 4, rotate screw 3 appropriately to adjust the position of fly rod piece 2 and change its strength, and then tighten nut 4.

[0030] Example 2

[0031] like Figures 3-4 As shown, this embodiment provides a filter, including a cover plate and a cavity. Multiple parallel resonant pillars 6 are installed on the cover plate. It also includes the adjustable fly rod described in Embodiment 1. The adjustable fly rod is installed on the cover plate. After the cover plate and the cavity are engaged, one end of the screw 3 with a fly rod plate 2 is placed in the cavity. The fly rod plate 2 is between two resonant pillars. The relative position of the fly rod plate 2 and the resonant pillars is adjusted by the other end of the screw.

[0032] The adjustable flying bar is used to adjust the center frequency and bandwidth of the filter, and the coupling degree between the flying bar and other elements in the filter can change the bandwidth of the filter.

[0033] When the flying bar needs to be adjusted, the position of the internal flying bar sheet 2 does not need to be adjusted by disassembling the cover plate, and only the nut 4 on the cover plate is disassembled, the screw rod 3 is rotated, and the position of the internal flying bar sheet 2 relative to the adjacent elements is adjusted.

[0034] Embodiment 3

[0035] The embodiment provides a duplexer, and the adjustable flying bar provided in the embodiment 1 is arranged on the duplexer, the adjustable flying bar is used to reduce mutual interference of signals between transmitting and receiving ports, reduce the case that transmitting signals leak to the receiving port and receiving signals leak to the transmitting port, and improve the isolation of the duplexer.

[0036] The above only describes the preferred embodiments of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications should be considered as the protection scope of the present application.

Claims

1. An adjustable flybar, characterized by, The adjustable flying rod comprises a flying rod piece, a base, a screw rod and a nut, one end surface of the screw rod is provided with the flying rod piece and the base, and the flying rod piece is arranged between the base and the screw rod; The adjustable flying rod further comprises a fastening screw, the fastening screw passes through a screw hole on the base, a screw hole on the flying rod piece and a screw hole on the end surface of the screw rod in sequence, the flying rod piece and the base are installed on the end surface of the screw rod, and the nut is arranged on the screw rod from the other end of the screw rod and used for installing the screw rod on a cover plate.

2. The adjustable flying bar of claim 1, wherein, The screw rod, the base and the fastening screw are all made of insulating materials.

3. The adjustable flying bar of claim 1 wherein, The flying rod piece is in a U shape, the opening of the U shape faces away from the end surface of the screw rod, the middle part of the flying rod piece is installed between the screw rod and the base through the fastening screw, and the two side edges of the flying rod piece are arranged on the base.

4. The adjustable flying bar of claim 1 wherein, The fastening screw is coated with fastening glue.

5. The adjustable flying bar of claim 1 wherein, The base is in a rectangular shape, and the width of the base is greater than the width of the flying rod piece.

6. The adjustable flying bar of claim 1 wherein, The material of the flying rod piece comprises any one of copper, silver and brass alloy.

7. A filter, characterized by The adjustable flying rod comprises a cover plate and a cavity, the cover plate is provided with the adjustable flying rod according to any one of claims 1-6, the cover plate is connected with the cavity in a matched mode, one end of the screw rod provided with the flying rod piece is arranged in the cavity, a plurality of parallel resonance columns are arranged in the cavity, the flying rod piece is arranged between two parallel resonance columns, and the relative position of the flying rod piece and the resonance columns is adjusted through the other end of the screw rod.

8. A diplexer, characterized by The adjustable flying rod comprises the adjustable flying rod according to any one of claims 1-6.

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