CN209963198U

CN209963198U - Novel filter

Info

Publication number: CN209963198U
Application number: CN201921004994.9U
Authority: CN
Inventors: 郑进喜; 肖旭林; 黄新友
Original assignee: Nanjing Joy Communication Technology Co Ltd
Current assignee: Nanjing Joy Communication Technology Co Ltd
Priority date: 2019-07-01
Filing date: 2019-07-01
Publication date: 2020-01-17
Anticipated expiration: 2029-07-01

Abstract

The utility model discloses a novel filter, including the cavity and be equipped with the apron at the cavity top and 4 corners of cavity are equipped with the mounting hole, be equipped with 2 capacitive fly rods in the cavity and capacitive fly rods fix through the medium, cavity outside one side is equipped with DIN type connector I and is equipped with DIN type connector II at the opposite side, be equipped with 10 resonance columns in 3 rows in the cavity, 3 rows of resonance columns from top to bottom parallel arrangement and from top to bottom quantity are 3 respectively, 4 and 3, adjacent 3 resonance columns between 2 adjacent rows are equilateral triangle structure and set up the topological structure that forms 10 chambeies 5 inhibition limit; a tap is arranged between the DIN type I, DIN connector II and the adjacent resonance column, one end of the tap is screwed with the DIN type I or II connector, and capacitive coupling is formed between the other end of the tap and the resonance column. The utility model has the characteristics of small, light in weight, high outband restrain, low third-order intermodulation, high power.

Description

Novel filter

Technical Field

The utility model relates to a wireless communication equipment field especially relates to a novel filter.

Background

The filter in the prior art usually adopts a straight-line cavity structure and has the defects of large volume, heavy weight and poor electrical performance index.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: to prior art not enough and defect, the utility model provides a novel wave filter has characteristics small, light in weight, high outband restrain, low third-order intermodulation, high power.

The technical scheme is as follows: the utility model discloses a novel filter, including the cavity and be equipped with the apron at the cavity top and 4 corners of cavity are equipped with the mounting hole, be equipped with 2 capacitive fly rods in the cavity and capacitive fly rods fix through the medium, cavity outside one side is equipped with DIN type connector I and is equipped with DIN type connector II at the opposite side, be equipped with 10 resonance columns in 3 rows in the cavity, 3 rows of resonance columns parallel arrangement from top to bottom and quantity from top to bottom are 3 respectively, 4 and 3, adjacent 3 resonance columns between 2 adjacent rows are equilateral triangle structure setting and form 10 chambeies 5 topology structure of restraining the extreme; a tap is arranged between the DIN type I, DIN connector II and the adjacent resonance column, one end of the tap is screwed with the DIN type I or the DIN type II, and capacitive coupling is formed between the other end of the tap and the resonance column.

And a coupling window is arranged between adjacent resonant columns in the cavity.

Wherein the length of the cavity is 139mm, the width is 97mm, and the height is 35 mm; the cavity is made of ACD12 material and the inner surface of the cavity is provided with a silver coating.

Wherein, the cover plate is connected with the cavity through a plurality of M3 screws, and an M4 screw rod is arranged above the cover plate.

Wherein, the length of the cover plate is 139mm, the width is 97mm, and the height is 3 mm; the cover plate is an ACD12 board body and the lower surface of the cover plate is provided with a silver coating.

Wherein, the diameter of the mounting hole is 4.5 mm.

The end parts of the 2 capacitive fly rods are respectively discs with the diameter of 8mm and the thickness of 2mm, and the middle parts of the 2 capacitive fly rods are respectively rods with the diameter of 3mm and the lengths of 14.3mm and 16.9 mm.

Has the advantages that: compared with the prior art, the utility model has the following apparent advantage: the utility model discloses often adopt straight row chamber structure to prior art's wave filter, have bulky, heavy, the poor shortcoming of electrical property index, design small, light in weight, high outband restrain, low third-order intermodulation, the novel wave filter of high power.

Drawings

Fig. 1 is a schematic structural view of the present invention;

in the figure, 1 is a DIN type connector I, 2 is an M4 screw, 3 is a cover plate, 4 is an M3 screw, 5 is a mounting hole, 6 is a capacitive flying bar, 7 is a medium, 8 is a tap, and 9 is a resonance column.

Detailed Description

The technical solution of the present invention will be further described with reference to the accompanying drawings and the detailed description.

The utility model discloses a novel filter, including the cavity and be equipped with apron 3 at the cavity top and 4 corners of cavity are equipped with mounting hole 5, be equipped with 2 capacitive fly rods 6 in the cavity and capacitive fly rods 6 fix through medium 7, cavity outside one side is equipped with DIN type connector I1 and is equipped with DIN type connector II at the opposite side, be equipped with 3 rows of 10 resonance posts 9 in the cavity, 3 rows of resonance posts 9 from top to bottom parallel arrangement and from top to bottom quantity are 3 respectively, 4 and 3, 3 adjacent resonance posts 9 between 2 adjacent rows are equilateral triangle structure and set up the topological structure that forms 10 chambeies 5 inhibition limit; a tap 8 is arranged between the DIN type connector I1, the DIN type connector II and the adjacent resonance column 9, one end of the tap 8 is screwed with the DIN type connector I1 or the DIN type connector II, and capacitive coupling is formed between the other end of the tap 8 and the resonance column 9. Wherein, a coupling window is arranged between adjacent resonant columns 9 in the cavity; the length of the cavity is 139mm, the width is 97mm, and the height is 35 mm; the cavity is made of ACD12 material, and a silver coating layer is arranged on the inner surface of the cavity; the cover plate 3 is connected with the cavity through a plurality of M3 screws 4, and an M4 screw rod 2 is arranged above the cover plate 3; the cover plate 3 has a length of 139mm, a width of 97mm and a height of 3 mm; the cover plate 3 is a plate body made of ACD12 material, and a silver coating layer is arranged on the lower surface of the cover plate 3; the diameter of the mounting hole 5 is 4.5 mm; the end parts of the 2 capacitive flying rods 6 are respectively disks with the diameter of 8mm and the thickness of 2mm, and the middle parts of the capacitive flying rods are respectively rods with the diameter of 3mm and the lengths of 14.3mm and 16.9 mm.

The utility model discloses often adopt straight row chamber structure to prior art's wave filter, have bulky, heavy, the poor shortcoming of electrical property index, design small, light in weight, high outband restrain, low third-order intermodulation, the novel wave filter of high power. The cavity is integrally formed by die casting with ACD12 material, and the inner surface is plated with silver; the resonant columns 9 are die-cast in the cavity, and 10 resonant columns 9 form a topological structure of 10 cavity 5 suppression poles; the cover plate 3 is integrally formed by stamping ACD12 material, and the lower surface is plated with silver; 2 capacitive fly rods 6 are machined and integrally formed by brass H59, and the outer surfaces of the capacitive fly rods are plated with silver; the cavity, the cover plate 3, the resonance column 9, the capacitive flying rod 6 and the DIN connector joint core are all plated with silver copper, and the shell is plated with ternary alloy; the steps of the resonant column 9 and the mounting hole 5 are integrally formed by die casting, and the resonant column 9 and the mounting hole 5 do not need to be additionally processed; the tap 8 adopts a capacitive coupling mode, no welding is achieved, the cost is reduced, the assembling and processing difficulty is reduced, and the delivery period is shortened.

Through tests, the novel filter has the advantages that the third-order intermodulation can reach more than 160dbc, the out-of-band rejection of 1710 MHz-1785 MHz and 1920 MHz-1980 MHz can be more than 95dB, the standing-wave ratio is less than 1.2, and the volume is only 139mm, 97mm and 35 mm; the high-power high-frequency-band-rejection-free high-power-consumption optical fiber has the characteristics of small size, light weight, high out-of-band rejection, low third-order intermodulation and high power.

Claims

1. A novel filter, characterized in that: the capacitive-type flying device comprises a cavity, a cover plate (3) is arranged at the top of the cavity, mounting holes (5) are formed in 4 corners of the cavity, 2 capacitive flying rods (6) are arranged in the cavity and fixed through a medium (7), a DIN connector I (1) is arranged on one side outside the cavity, a DIN connector II is arranged on the other side of the cavity, 3 rows of 10 resonant columns (9) are arranged in the cavity, the 3 rows of resonant columns (9) are arranged in parallel from top to bottom, the number of the resonant columns is 3, 4 and 3 from top to bottom, and 3 adjacent resonant columns (9) between every two adjacent 2 rows are arranged in an equilateral triangle structure to form a topological structure with 10 suppression poles of the cavity 5; a tap (8) is arranged between the DIN type connector I (1) and the DIN type connector II and the adjacent resonance column (9), one end of the tap (8) is screwed with the DIN type connector I (1) or the DIN type connector II, and capacitive coupling is formed between the other end of the tap and the resonance column (9).

2. A novel filter according to claim 1, characterized in that: and a coupling window is arranged between adjacent resonant columns (9) in the cavity.

3. A novel filter according to claim 1, characterized in that: the length of the cavity is 139mm, the width of the cavity is 97mm, and the height of the cavity is 35 mm; the cavity is made of ACD12 material and the inner surface of the cavity is provided with a silver coating.

4. A novel filter according to claim 1, characterized in that: the cover plate (3) is connected with the cavity through a plurality of M3 screws (4) and an M4 screw rod (2) is arranged above the cover plate (3).

5. A novel filter according to claim 1, characterized in that: the length of the cover plate (3) is 139mm, the width is 97mm, and the height is 3 mm; the cover plate (3) is a plate body made of ACD12 material, and a silver coating is arranged on the lower surface of the cover plate (3).

6. A novel filter according to claim 1, characterized in that: the diameter of the mounting hole (5) is 4.5 mm.

7. A novel filter according to claim 1, characterized in that: the end parts of the 2 capacitive flying rods (6) are respectively discs with the diameter of 8mm and the thickness of 2mm, and the middle parts of the capacitive flying rods are respectively rods with the diameter of 3mm and the lengths of 14.3mm and 16.9 mm.