Filter

Abstract

A filter comprises a cavity, a separating rib integrally formed with the cavity, and a cover plate separated from the cavity. The cavity comprises a plurality of chambers, a resonance rod is arranged in each chamber, the cover plate integrally covers the plurality of chambers, and the cover plate is connected with an adjusting screw rod extending into the resonance rod. Every two adjacent cavities are communicated with each other, and an input and output connector is arranged at the communication position. According to the utility model, the electrical performance index of a filter product is improved to a certain extent.

Description

TECHNICAL FIELD

[0001] The utility model relates to communication field especially a kind of filter. BACKGROUND

[0002] In modern communication field, filter has become an important link of wireless communication.For example Figure 1 It is a front view of filter, wherein J1 is four SMA connectors on PCB board, for signal input and output connector. Figure 2 It is the back view of above-mentioned filter, wherein S11 is four input and output connectors of filter.Each cavity of above-mentioned filter has respective input and output connector, need to open more holes on cavity, it is not conducive to improve the electrical performance index of product, above all, existing filter has defects and deficiencies, need to find more simple and effective solution to solve the above problems. UTILITARY MODEL CONTENT

[0003] The utility model discloses a kind of filter, which improves the electrical performance index of product.

[0004] To achieve the above object, the utility model adopts the following technical scheme: a kind of filter, including cavity, with the cavity integrally formed spacer and with the cavity split setting cover plate, the cavity includes multiple chambers and each the chamber is equipped with harmonic lever, the cover plate is integrally covered in the above of multiple the chamber, adjusting screw rod connected on the cover plate is inserted into the harmonic lever, adjacent two The chamber is communicated with each other, and input and output connector is equipped at the communicating portion.

[0005] As a further improved technical scheme of the utility model, the cavity includes first side wall, second side wall, third side wall and fourth side wall connected in order, the first side wall and the third side wall are oppositely arranged, and the second side wall and the fourth side wall are oppositely arranged;The first side wall and the third side wall are each provided with a through hole corresponding to the input and output connector.

[0006] As a further improved technical scheme of the utility model, adjacent two chambers include left side chamber and right side chamber, the input and output connector includes an input connector and an output connector, each of the input connector and the output connector is connected with first tubular object inserted into the left side chamber and second tubular object inserted into the right side chamber, and the first tubular object and the second tubular object are used to combine the signals on both sides.

[0007] As a further improved technical scheme of the utility model, the spacer includes sunken spacer with gap between the cover plate, the first end of the sunken spacer points to but is not connected on the first side wall, and the end of the sunken spacer points to but is not connected on the third side wall.

[0008] As a further improved technical scheme of the utility model, the sunken partition rib extends zigzag between the first end and the last end.

[0009] As a further improved technical scheme of the utility model, the partition rib comprises common partition ribs with a height greater than the sunken partition rib so as to abut against the bottom of the cover plate, and a plurality of the common partition ribs are distributed on opposite sides of the sunken partition rib.

[0010] As a further improved technical scheme of the utility model, the common partition rib comprises a plurality of left partition ribs and a plurality of right partition ribs, the left partition rib comprises a first partition rib connected to the first side wall, a second partition rib connected to the second side wall, a third partition rib connected to the third side wall, and a fourth partition rib and a fifth partition rib connected to one side of the sunken partition rib, the right partition rib comprises a sixth partition rib and a seventh partition rib connected to the fourth side wall, and an eighth partition rib, a ninth partition rib and a tenth partition rib connected to the other side of the sunken partition rib, the fourth partition rib, the ninth partition rib and the fifth partition rib are respectively connected to the zigzag corners of the sunken partition rib, and the eighth partition rib and the tenth partition rib are respectively connected to the two ends of the zigzag extension of the sunken partition rib.

[0011] As a further improved technical scheme of the utility model, the first partition rib and the third partition rib extend in the front-rear direction and the extension lines are collinear, and

[0012] The second partition rib, the fourth partition rib, the fifth partition rib, the sixth partition rib, the seventh partition rib, the eighth partition rib, the ninth partition rib and the tenth partition rib are composed of five rows extending in the left-right direction and four columns arranged in the front-rear direction, and the left-right direction is perpendicular to the front-rear direction.

[0013] As a further improved technical scheme of the utility model, the eighth partition rib is the first row in the frontmost position,

[0014] The fourth partition rib and the sixth partition rib are the second row in the front position,

[0015] The second partition rib and the ninth partition rib are the third row in the middle position,

[0016] The fifth partition rib and the seventh partition rib are the fourth row in the rear position, and

[0017] The tenth partition rib is the fifth row in the rearmost position.

[0018] As a further improved technical scheme of the utility model, the second partition rib is the first column in the leftmost position,

[0019] The fourth partition rib and the fifth partition rib are the second column in the left position,

[0020] The eighth, ninth and tenth ribs are a third column on the right side, and

[0021] The sixth and seventh ribs are a fourth column on the far right side.

[0022] Compared with the prior art, the cavity comprises a plurality of chambers, and adjacent two chambers are in communication and an input / output joint is arranged at the communication position, a resonant rod is arranged in each chamber, when the adjusting screw rod connected to the cover plate extends into the resonant rod to adjust the frequency, two frequency bands formed by adjacent two chambers share the same input / output joint, power loss caused by a plurality of holes in the cavity wall surface can be reduced as much as possible, and the electrical performance index of the filter product can be improved to a certain extent. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a front view of a filter in the prior art;

[0024] Figure 2 is a back view of a filter in the prior art;

[0025] Figure 3 is a three-dimensional assembly view of the filter of the utility model;

[0026] Figure 4 is a three-dimensional exploded view of the filter of the utility model;

[0027] Figure 5 is a three-dimensional exploded view of the filter of the utility model from another angle;

[0028] Figure 6 is Figure 3 a three-dimensional assembly view of other parts except the cover plate and the adjusting screw rod thereon;

[0029] Figure 7 is Figure 6 an enlarged view of part A in Fig.

[0030] Figure 8 is a three-dimensional assembly view of other parts from another angle similar to Fig. Figure 6

[0031] Figure 9 is Figure 8 a three-dimensional exploded view of two input / output joints and the cavity in Fig.

[0032] Figure 10 is Figure 9 a top view of other parts in Fig. DETAILED DESCRIPTION ​

[0033] The exemplary embodiments of the present application will be described in detail below with reference to the accompanying drawings. If there are several embodiments, the features in these embodiments can be combined with each other when there is no conflict. When the description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise specified. The description in the following exemplary embodiments does not represent all the embodiments consistent with the present application; rather, they are merely examples of devices, products and / or methods consistent with some aspects of the present application as recited in the claims of the present application.

[0034] The terms used in the present application are merely for the purpose of describing the embodiments and are not intended to limit the scope of the protection of the present application. The singular forms "a", "an" and "the" used in the specification and claims of the present application are also intended to include the plural forms unless the context clearly indicates otherwise.

[0035] It should be understood that the use of terms such as "first", "second" and similar terms in the description and claims of the present application do not denote any order, number or importance, but are merely used to distinguish features. Similarly, "one" or "a" and similar terms do not denote a quantity limitation, but mean that at least one exists. Unless otherwise indicated, "before", "after", "left", "right", "up", "down" and similar terms appearing in the present application are merely for the purpose of facilitating the description and are not limited to a particular position or a spatial orientation. "Include" or "contain" and similar terms are an open-ended expression, meaning that the elements appearing before "include" or "contain" cover the elements appearing after "include" or "contain" and their equivalents, which does not exclude that the elements appearing before "include" or "contain" can also contain other elements. If "several" appears in the present application, it means two and more than two.

[0036] Please refer to Figure 1 and Figure 2 for the schematic diagrams of the front and back of the filter in the prior art. As can be seen, S11 is the four input and output connectors of the filter. That is, one cavity has an input connector S11 and an output connector S11, and the other cavity also has an input connector S11 and an output connector S11. It can be seen that the filter in the prior art has its own input and output connectors. This requires more through holes to be opened on the cavity, which is not conducive to improving the electrical performance indicators of the product.

[0037] To solve the problem of opening more through holes on the cavity, please refer to Figures 3 to 10The utility model discloses a filter, including cavity 1, with the cavity 1 integral moulding's partition 2 and with the cavity 1 separate setting's cover plate 3. The cavity 1 includes a plurality of chambers 10 and each chamber 10 is equipped with the resonant rod 4. The cover plate 3 is integrally covered and is located above a plurality of chambers 10, and the cover plate 3 is connected with the adjusting screw 5 that enters the resonant rod 4. Adjacent two chambers 10 communicate with each other, and the communication place is equipped with input output connector 100, so the setting does not need to open more through -hole on the cavity 1, and it is favorable to promote the electric performance index of product.

[0038] Please refer to Figure 5 And Figure 6 The cavity 1 includes first side wall 11, second side wall 12, third side wall 13 and fourth side wall 14 connected in order. The first side wall 11 and the third side wall 13 are oppositely arranged, and the second side wall 12 and the fourth side wall 14 are oppositely arranged. The first side wall 11 and the third side wall 13 are each provided with a through hole 110, 130 corresponding to the input output connector 100. Thus, the two connectors responsible for input / output are reversely arranged, facilitating the connection of external wires with each connector.

[0039] Please refer to Figure 8 Adjacent two chambers 10 include left chamber 101 and right chamber 102. The input output connector 100 includes an input connector 1001 and an output connector 1002. Each of the input connector 1001 and the output connector 1002 is connected with a first tubular 61 extending into the left chamber 101 and a second tubular 62 extending into the right chamber 102. The first tubular 61 and the second tubular 62 are used for input / output of signals on both sides. Specifically, the first end of each tube (first tubular 61 / second tubular 62) is welded with the input connector 1001 / output connector 1002, but the second end does not touch the resonant rod 4 in the chamber 10, so as to ensure that each tube can send or receive radio frequency signals in the corresponding chamber 10. The two-way radio frequency signals input to both sides are modulated in frequency respectively, and then combined to the output end, and then the two-way modulated radio frequency signals are combined into one way to the radio frequency connector of the antenna for transmission.

[0040] Please refer to Figures 6 to 10The spacer rib 2 includes a positioning member 20, and the bottom surface of the cover plate 3 faces the cavity 1 and includes a mounting column 30 which cooperates with the positioning member 20 to positionally mount the cover plate 3 and the cavity 1. The spacer rib 2 includes a sunken spacer rib 21 which is provided with a gap from the cover plate 3. The leading end 211 of the sunken spacer rib 21 points to but is not connected to the first side wall 11, and the trailing end 212 of the sunken spacer rib 21 points to but is not connected to the third side wall 13. The sunken spacer rib of the cavity 1 can be directly pressure-cast, without separate machining, to reduce the risk of sand holes affecting intermodulation and isolation problems caused by machining and post-casting defects; the sunken spacer rib can be opened to narrow the width of the spacer rib and also to make it shorter (the sunken depth depends on the isolation performance of the product, and the deeper the sunken depth of the cavity, the looser the isolation index requirement), thereby reducing the weight of the cavity; the sunken spacer rib can be opened, and the two screws next to it can be correspondingly pulled away, which is a good weight-reducing design for projects with extreme weight requirements, and can reduce the amount of aluminum blocks used, thereby reducing costs; the sunken spacer rib can be opened, and the two channel spaces can be utilized, thereby increasing the diameter of a single cavity, increasing the energy storage of a single cavity, improving power, and effectively improving the electrical performance index (Q value) of the product; the sunken spacer rib can be opened, and some screws do not exist in the situation of similar contact and non-contact, thereby effectively improving the intermodulation pass rate.

[0041] Please refer to Figures 6 to 10 , the sunken spacer rib 21 extends between the leading end 211 and the trailing end 212. Figure 10 From the top view, the sunken spacer rib 21 extends in a W shape. In order to clearly show the position of the sunken spacer rib 21, the upper surface of the sunken spacer rib 21 is represented by pattern filling in Figures 8 to 10 . The sunken spacer rib 21 extending in a W shape can utilize the space between the two channels (left chamber 101 and right chamber 102), increase the diameter of a single cavity, and improve the Q value, increase the energy storage of a single cavity, and improve the power.

[0042] Please refer to Figure 7 , Figure 9 and Figure 10 , in addition to the sunken spacer rib 21 described above, the spacer rib 2 also includes a plurality of ordinary spacer ribs 22 which have a height greater than the sunken spacer rib 21 and can abut against the bottom of the cover plate 3. The plurality of ordinary spacer ribs 22 are distributed on opposite sides of the sunken spacer rib 21. The ordinary spacer rib 22 functions to form a meandering signal path in the respective left and right chambers 10 (left chamber 101 / right chamber 102), thereby increasing the path of a single cavity.

[0043] Please refer to Figure 9 and Figure 10 , from Figure 10The common partition 22 comprises a plurality of left partition 221 and a plurality of right partition 222, and the number of the left partition 221 and the right partition 222 is equal. In the embodiment, the number of the left partition 221 and the right partition 222 is five. Specifically, the left partition 221 comprises a first partition 2201, a second partition 2202, a third partition 2203 connected to the third side wall 13, a fourth partition 2204 and a fifth partition 2205. The first partition 2201 is connected to the first side wall 11, the second partition 2202 is connected to the second side wall 12, the third partition 2203 is connected to the third side wall 13, and the fourth partition 2204 and the fifth partition 2205 are connected to one side of the sunken partition 21. The right partition 222 comprises a sixth partition 2206, a seventh partition 2207, an eighth partition 2208, a ninth partition 2209 and a tenth partition 2210. The sixth partition 2206 and the seventh partition 2207 are connected to the fourth side wall 14, and the eighth partition 2208, the ninth partition 2209 and the tenth partition 2210 are connected to the other side of the sunken partition 21. Specifically, the fourth partition 2204, the ninth partition 2209 and the fifth partition 2205 are connected to three bending corners of the sunken partition 21 respectively, and the eighth partition 2208 and the tenth partition 2210 are connected to two ends of the sunken partition 21 respectively. Alternatively, the fourth partition 2204 and the fifth partition 2205 are connected to two bottom corners of the sunken partition 21 respectively, and the eighth partition 2208, the ninth partition 2209 and the tenth partition 2210 are connected to two ends of the sunken partition 21 and the other bottom corner of the sunken partition 21 respectively. In this way, the signal path is formed in a meandering manner, and the signal paths on the left and right sides are different, so that the signals on the left and right sides are distinguished and transmitted separately.

[0044] The following will introduce the distribution of the ten common partitions 22 in the cavity 1. First, please refer to Figure 8, the first partition rib 2201 and the third partition rib 2203 extend in the front-rear direction and the extension lines of the first partition rib 2201 and the third partition rib 2203 are collinear; secondly, the second partition rib 2202, the fourth partition rib 2204, the fifth partition rib 2205, the sixth partition rib 2206, the seventh partition rib 2207, the eighth partition rib 2208, the ninth partition rib 2209 and the tenth partition rib 2210 are composed of five rows extending in the left-right direction and four columns arranged in the front-rear direction, the left-right direction being perpendicular to the front-rear direction. That is, the eight common partition ribs 22 except the first partition rib 2201 and the third partition rib 2203 are arranged in an array, so that the partition rib 2 of the utility model is more regular and more easily separates the plurality of resonance rods 4 from each other.

[0045] Please continue to refer to Figure 10 , the five rows in the array arrangement are specifically that the eighth partition rib 2208 is the first row in the frontmost position, the fourth partition rib 2204 and the sixth partition rib 2206 are the second row in the front position, the second partition rib 2202 and the ninth partition rib 2209 are the third row in the middle position, the fifth partition rib 2205 and the seventh partition rib 2207 are the fourth row in the rear position, and the tenth partition rib 2210 is the fifth row in the rearmost position.

[0046] Please continue to refer to Figure 10 , the four columns in the array arrangement are specifically that the second partition rib 2202 is the first column in the leftmost position, the fourth partition rib 2204 and the fifth partition rib 2205 are the second column in the left position, the eighth partition rib 2208, the ninth partition rib 2209 and the tenth partition rib 2210 are the third column in the right position, and the sixth partition rib 2206 and the seventh partition rib 2207 are the fourth column in the rightmost position.

[0047] It also needs to be pointed out that in the specific embodiment, the first through hole 110 corresponding to the input terminal 1001 is located on the first side wall 11 and is opposite to the outer surface position of the eighth partition rib 2208, and the second through hole 130 corresponding to the output terminal 1002 is located on the third side wall 13 and is opposite to the outer surface position of the tenth partition rib 2210. That is, the input terminal 1001 and the output terminal 1002 are both deviated from the center line of the cavity 1 extending in the front-rear direction and arranged near the right side chamber 102, facilitating the left and right side signal combination.

[0048] Please refer to Figure 10It can also be understood that the first partition rib 2201 and the third partition rib 2203 both extend in the front-rear direction, and the second partition rib 2202, the fourth partition rib 2204, the fifth partition rib 2205, the sixth partition rib 2206, the seventh partition rib 2207, the eighth partition rib 2208, the ninth partition rib 2209 and the tenth partition rib 2210 all extend in the left-right direction. It can be further understood that the fourth partition rib 2204 and the fifth partition rib 2205 are arranged in the front-rear direction, and the second partition rib 2202 is located between the fourth partition rib 2204 and the fifth partition rib 2205 in the front-rear direction. It can be further understood that the eighth partition rib 2208, the ninth partition rib 2209 and the tenth partition rib 2210 are sequentially arranged in the front-rear direction, the sixth partition rib 2206 is located between the eighth partition rib 2208 and the ninth partition rib 2209 in the front-rear direction, and the seventh partition rib 2207 is located between the ninth partition rib 2209 and the tenth partition rib 2210 in the front-rear direction, thus forming an array arrangement and improving the effectiveness of frequency modulation.

[0049] In summary, the filter of the utility model communicates with each other through the adjacent two chambers 10 and is equipped with input and output joints 100 at the communication position, so that it is not necessary to open more through holes on the cavity 1, and on the basis of the signal combination on both sides, the partition rib 2 between the adjacent channels is further sunken, which is beneficial to the cavity diameter of the two filters, increases the diameter of the single cavity, improves the Q value, increases the energy storage of the single cavity, improves the power, and effectively improves the electrical performance index of the filter product of the utility model.

[0050] The above embodiments are only used to illustrate the utility model and not to limit the technical solutions described in the utility model, and the understanding of the utility model should be based on the technical personnel in the technical field, although the utility model has been described in detail with reference to the above embodiments, but the ordinary technical personnel in the art should understand that the technical personnel in the technical field can still modify or equivalently replace the utility model, and all technical solutions and improvements which do not deviate from the spirit and scope of the utility model should be covered in the claim range of the utility model.

Claims

1. A filter comprising a cavity (1), a partition rib (2) integrally formed with the cavity (1) and a cover plate (3) separately arranged with the cavity (1), the cavity (1) comprising a plurality of chambers (10) and each of the chambers (10) being provided with a resonant rod (4), the cover plate (3) being integrally arranged above the plurality of chambers (10), the cover plate (3) being connected with an adjusting screw rod (5) extending into the resonant rod (4), characterized in that: Two adjacent chambers (10) are connected to each other, and an input / output joint (100) is arranged at the connection position. ​ 2. The filter of claim 1, wherein: The cavity (1) comprises a first side wall (11), a second side wall (12), a third side wall (13) and a fourth side wall (14) connected in sequence, the first side wall (11) and the third side wall (13) are oppositely arranged, and the second side wall (12) and the fourth side wall (14) are oppositely arranged; the first side wall (11) and the third side wall (13) are each provided with a through hole (110, 130) corresponding to the input / output joint (100).

3. The filter of claim 2, wherein: The two adjacent chambers (10) comprise a left chamber (101) and a right chamber (102), the input / output joint (100) comprises an input joint (1001) and an output joint (1002), each of the input joint (1001) and the output joint (1002) is connected with a first tubular structure (61) extending into the left chamber (101) and a second tubular structure (62) extending into the right chamber (102), and the first tubular structure (61) and the second tubular structure (62) are used for combining the signals on both sides.

4. The filter of claim 2, wherein: The spacer rib (2) comprises a sunken spacer rib (21) with a gap between the sunken spacer rib (21) and the cover plate (3), the leading end (211) of the sunken spacer rib (21) points to but is not connected to the first side wall (11), and the trailing end (212) of the sunken spacer rib (21) points to but is not connected to the third side wall (13).

5. The filter of claim 4, wherein: The sunken spacer rib (21) extends tortuously between the leading end (211) and the trailing end (212).

6. The filter of claim 5, wherein: The spacer rib (2) comprises a common spacer rib (22) with a height greater than that of the sunken spacer rib (21) so as to abut against the bottom of the cover plate (3), and a plurality of common spacer ribs (22) are distributed on opposite sides of the sunken spacer rib (21).

7. The filter of claim 6, wherein: The common spacer rib (22) comprises a plurality of left spacer ribs (221) and a plurality of right spacer ribs (222), the left spacer rib (221) comprises a first spacer rib (2201) connected to the first side wall (11), a second spacer rib (2202) connected to the second side wall (12), a third spacer rib (2203) connected to the third side wall (13), a fourth spacer rib (2204) and a fifth spacer rib (2205) connected to one side of the sunken spacer rib (21), and the right spacer rib (222) comprises a sixth spacer rib (2206) and a seventh spacer rib (2207) connected to the fourth side wall (14), and an eighth spacer rib (2208), a ninth spacer rib (2209) and a tenth spacer rib (2210) connected to the other side of the sunken spacer rib (21), the fourth spacer rib (2204), the ninth spacer rib (2209) and the fifth spacer rib (2205) are respectively connected to the tortuous corners of the sunken spacer rib (21), and the eighth spacer rib (2208) and the tenth spacer rib (2210) are respectively connected to the two ends of the sunken spacer rib (21) extending tortuously.

8. The filter of claim 7, wherein: The first partition rib (2201) and the third partition rib (2203) extend in the front-rear direction and the extension lines are collinear, and The second partition rib (2202), the fourth partition rib (2204), the fifth partition rib (2205), the sixth partition rib (2206), the seventh partition rib (2207), the eighth partition rib (2208), the ninth partition rib (2209), and the tenth partition rib (2210) are composed of five rows extending in the left-right direction and four columns arranged in the front-rear direction, the left-right direction being perpendicular to the front-rear direction.

9. The filter according to claim 8, wherein: The eighth partition rib (2208) is alone in the first row at the frontmost position, the fourth partition rib (2204) and the sixth partition rib (2206) are in the second row at the more front position, the second partition rib (2202) and the ninth partition rib (2209) are in the third row at the intermediate position, the fifth partition rib (2205) and the seventh partition rib (2207) are in the fourth row at the more rear position, and the tenth partition rib (2210) is alone in the fifth row at the rearmost position.

10. The filter according to claim 8, wherein: The second partition rib (2202) is alone in the first column at the leftmost position, the fourth partition rib (2204) and the fifth partition rib (2205) are in the second column at the more left position, the eighth partition rib (2208), the ninth partition rib (2209), and the tenth partition rib (2210) are in the third column at the more right position, and The sixth partition rib (2206) and the seventh partition rib (2207) are together in the fourth column at the rightmost position.

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