CN212434804U

CN212434804U - Cavity filter

Info

Publication number: CN212434804U
Application number: CN202021440918.5U
Authority: CN
Inventors: 郑峰; 费振华; 黄婷
Original assignee: Shenzhen Xindi Precision Technology Co Ltd
Current assignee: Shenzhen Xindi Precision Technology Co Ltd
Priority date: 2020-07-21
Filing date: 2020-07-21
Publication date: 2021-01-29
Anticipated expiration: 2030-07-21

Abstract

The utility model relates to a cavity filter technical field specifically is a cavity filter, including cavity filter shell, cavity filter shell right side is connected with heat radiation structure, cavity filter shell is connected with receiving terminal antenna and transmitting terminal antenna, cavity filter shell is equipped with a plurality of evenly distributed's installation hole site all around, the inside wave filter cavity that is equipped with of cavity filter shell. The device has the advantages of firm structure, stable and reliable performance, smaller volume, moderate Q value, good filtering effect and very common application in a communication base station.

Description

Cavity filter

Technical Field

The utility model relates to a cavity filter technical field specifically is a cavity filter.

Background

The cavity filter is a microwave filter adopting a resonant cavity structure, and one cavity can be equivalent to an inductor and a capacitor connected in parallel, so that a resonant level is formed, and the microwave filtering function is realized.

The common cavity filter has the disadvantages of not firm enough structure, not stable performance, overlarge volume, unsuitable Q value, poor effect and not easy popularization.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a cavity filter to it is firm inadequately to solve general cavity filter structure, and the performance is not too stable, and is bulky, and the Q value is unsuitable, and the effect is not good, the not too popular problem of using.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a cavity filter, includes cavity filter shell, cavity filter shell right side is connected with heat radiation structure, cavity filter shell is connected with receiving terminal antenna and transmitting terminal antenna, cavity filter shell is equipped with a plurality of evenly distributed's installation hole site all around, the inside wave filter cavity that is equipped with of cavity filter shell.

As a further aspect of the present invention: the heat radiation structure comprises a heat radiation metal plate, a plurality of uniformly distributed heat radiation thin sheets are fixed on two sides of the heat radiation metal plate, and a plurality of installation hole positions are arranged at the edge of the heat radiation metal plate.

As a further aspect of the present invention: the filter cavity divide into and receives chamber and transmission chamber, receive and be equipped with first baffler between chamber and the transmission chamber, receive intracavity portion and divide into low frequency receiving chamber, high frequency receiving chamber and receiving circuit room, be equipped with second baffler between chamber and the high frequency receiving chamber is received to the low frequency, the transmission intracavity divide into low frequency transmitting chamber, high frequency transmitting chamber and transmitting circuit room, is located be equipped with third baffler between low frequency transmitting chamber and the high frequency transmitting chamber.

As a further aspect of the present invention: the receiving circuit room and the transmitting circuit room are internally provided with a receiving circuit board and a transmitting circuit board, the receiving circuit board is connected with a first resonance rod and a second resonance rod in the low-frequency receiving cavity and the high-frequency receiving cavity through a first line, and the transmitting circuit board is connected with a third resonance rod and a fourth resonance rod in the low-frequency transmitting cavity and the high-frequency transmitting cavity through a second line.

As a further aspect of the present invention: first resonance pole and third resonance pole have the disc mouth, second resonance pole and fourth resonance pole diameter are less than first resonance pole and third resonance pole, low frequency receiving cavity, high frequency receiving cavity, low frequency transmission cavity and high frequency transmission intracavity are equipped with a plurality of evenly distributed's separation short slab.

The embodiment of the utility model provides a pair of cavity filter, the device structure is firm, the stable performance is reliable, and the volume is littleer, and the Q value is moderate, and filtering effect is good, uses very generally among the communication base station.

Drawings

Fig. 1 is a structural diagram of a cavity filter according to an embodiment of the present invention;

fig. 2 is an internal structural view of the filter cavity.

In the figure: 1. a cavity filter housing; 2. a heat dissipation structure; 201. a heat-dissipating metal plate; 202. a heat dissipating sheet; 3. a receiving end antenna; 4. a transmitting end antenna; 5. mounting hole sites; 6. a filter cavity; 7. a handle; 601. a receiving cavity; 602. a launch chamber; 603. a low frequency receiving cavity; 604. a high-frequency receiving cavity; 605. a low frequency emission cavity; 606. a first barrier plate; 607. a second barrier panel; 608. a third barrier panel; 609. a receiving circuit chamber; 610. a transmitting circuit chamber; 611. receiving a circuit board; 612. a transmitting circuit board; 613. a first line; 614. a first resonant rod; 615. a second resonant rod; 616. a second line; 617. a third resonant rod; 618. a fourth resonant rod; 619. a blocking short plate; 620. a high-frequency emission cavity; 621. a disc opening.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

Example 1:

as shown in fig. 1 and 2, in the embodiment of the present invention, a cavity filter, including cavity filter housing 1, cavity filter housing 1 right side is connected with heat radiation structure 2, heat radiation structure 2 is connected with handle 7, cavity filter housing 1 is connected with receiving terminal antenna 3 and transmitting terminal antenna 4, cavity filter housing 1 is equipped with a plurality of evenly distributed's installation hole site 5 all around, the inside filter cavity 6 that is equipped with of cavity filter housing 1.

The utility model discloses an in the embodiment, 5 are many in the installation hole site on the cavity filter shell 1, can select installation hole site 5 installation at will, and the convenience is strong, and receiving terminal antenna 3 and 4 receiving wave bands of transmitting terminal antenna, a transmitting wave band, handle 7 are used for making things convenient for the handle portable convenience.

Example 2:

as shown in fig. 1 and fig. 2, in the embodiment of the present invention, the heat dissipation structure 2 includes a heat dissipation metal plate 201, a plurality of heat dissipation thin sheets 202 are fixed on both sides of the heat dissipation metal plate 201, and a plurality of mounting holes 5 are arranged at the edge of the heat dissipation metal plate 201.

In the embodiment of the present invention, the heat dissipation sheet 202 dissipates the heat from the heat dissipation metal plate 201.

Example 3:

as shown in fig. 1 and fig. 2, in the embodiment of the present invention, the filter cavity 6 is divided into a receiving cavity 601 and a transmitting cavity 602, a first blocking plate 606 is disposed between the receiving cavity 601 and the transmitting cavity 602, the receiving cavity 601 is divided into a low frequency receiving cavity 603, a high frequency receiving cavity 604 and a receiving circuit chamber 609, a second blocking plate 607 is disposed between the low frequency receiving cavity 603 and the high frequency receiving cavity 604, the transmitting cavity 602 is divided into a low frequency transmitting cavity 605, a high frequency transmitting cavity 620 and a transmitting circuit chamber 610, and a third blocking plate 608 is disposed between the low frequency transmitting cavity 605 and the high frequency transmitting cavity 620.

The embodiment of the utility model provides an in, receiving chamber 601 is used for receiving, and transmission chamber 602 is used for the transmission, and first separation board 606, second separation board 607 and third separation board 608 are used for the interference between the different cavities of separation, and low frequency receiving chamber 603 and low frequency transmission chamber 605 are used for receiving and dispatching the low frequency band ripples, and high frequency receiving chamber 604 and high frequency transmission chamber 620 are used for receiving and dispatching the high frequency band ripples.

Example 4:

as shown in fig. 1 and 2, in the embodiment of the present invention, a receiving circuit board 611 and a transmitting circuit board 612 are installed in the receiving circuit chamber 609 and the transmitting circuit chamber 610, the receiving circuit board 611 connects the first resonant rod 614 and the second resonant rod 615 in the low frequency receiving cavity 603 and the high frequency receiving cavity 604 through a first line 613, and the transmitting circuit board 612 connects the third resonant rod 617 and the fourth resonant rod 618 in the low frequency transmitting cavity 605 and the high frequency transmitting cavity 620 through a second line 616.

In the embodiment of the present invention, the first resonance rod 614 and the third resonance rod 617 are used for transmitting and receiving low frequency waves, and the second resonance rod 615 and the fourth resonance rod 618 are used for transmitting and receiving high frequency waves.

Example 5:

as shown in fig. 1 and fig. 2, in the embodiment of the present invention, the first resonance rod 614 and the third resonance rod 617 are provided with a disc hole 621, the diameters of the second resonance rod 615 and the fourth resonance rod 618 are smaller than the diameters of the first resonance rod 614 and the third resonance rod 617, and a plurality of barrier short plates 619 uniformly distributed are disposed in the low frequency receiving cavity 603, the high frequency receiving cavity 604, the low frequency transmitting cavity 605 and the high frequency transmitting cavity 620.

In the embodiment of the utility model, the resonance pole is used to the low frequency has disc mouth 621 and the diameter is greater than the resonance pole is used to the high frequency, and all separation short slab 619 divide into the cavity main part resonance cavity of a large number for the device effect is better.

The utility model provides an in the above-mentioned embodiment, the device the structure is firm, the stable performance is reliable, and the volume is littleer, and the Q value is moderate, and filtering effect is good, uses very generally among the communication base station.

The above is only the preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, without departing from the concept of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent.

Claims

1. The utility model provides a cavity filter, includes cavity filter shell (1), its characterized in that, cavity filter shell (1) right side is connected with heat radiation structure (2), heat radiation structure (2) are connected with handle (7), are located the cavity filter shell (1) outside is connected with receiving terminal antenna (3) and transmitting terminal antenna (4), cavity filter shell (1) is equipped with a plurality of evenly distributed's installation hole site (5) all around, cavity filter shell (1) inside is equipped with filter cavity (6).

2. A cavity filter according to claim 1, wherein the heat dissipation structure (2) comprises a heat dissipation metal plate (201), a plurality of heat dissipation sheets (202) are fixed on both sides of the heat dissipation metal plate (201), and a plurality of mounting holes (5) are arranged at the edge of the heat dissipation metal plate (201).

3. A cavity filter according to claim 1, wherein the filter cavity (6) is divided into a receiving cavity (601) and a transmitting cavity (602), a first baffle plate (606) is arranged between the receiving cavity (601) and the transmitting cavity (602), the receiving cavity (601) is internally divided into a low-frequency receiving cavity (603), a high-frequency receiving cavity (604) and a receiving circuit chamber (609), a second baffle plate (607) is arranged between the low-frequency receiving cavity (603) and the high-frequency receiving cavity (604), the transmitting cavity (602) is internally divided into a low-frequency transmitting cavity (605), a high-frequency transmitting cavity (620) and a transmitting circuit chamber (610), and a third baffle plate (608) is arranged between the low-frequency transmitting cavity (605) and the high-frequency transmitting cavity (620).

4. A cavity filter according to claim 3, wherein the receiving circuit chamber (609) and the transmitting circuit chamber (610) are mounted with a receiving circuit board (611) and a transmitting circuit board (612), the receiving circuit board (611) connects the first resonant rod (614) and the second resonant rod (615) in the low frequency receiving cavity (603) and the high frequency receiving cavity (604) through a first line (613), and the transmitting circuit board (612) connects the third resonant rod (617) and the fourth resonant rod (618) in the low frequency transmitting cavity (605) and the high frequency transmitting cavity (620) through a second line (616).

5. A cavity filter according to claim 4, wherein the first (614) and third (617) resonator rods have disc openings (621), the second (615) and fourth (618) resonator rods have smaller diameters than the first (614) and third (617) resonator rods, and a plurality of barrier stubs (619) are uniformly distributed in the low frequency receiving cavity (603), the high frequency receiving cavity (604), the low frequency transmitting cavity (605) and the high frequency transmitting cavity (620).