A single-channel filter implements a multi-channel filter

Abstract

The invention discloses a single-channel filter for realizing a multi-channel filter, belonging to the field of communication filter multiplexers, comprising a cavity, wherein a cover plate is connected to the top of the cavity, a tuning screw is threadedly connected to the cover plate, the cavity and the cover plate are both provided with matching cover plate screw holes, cover plate fixing screws are connected in the cover plate screw holes, the cover plate fixing screws are all against the top outer wall of the cover plate, a frequency point resonance column is provided on the bottom inner wall of the cavity, four joints are installed on the front side of the cavity, the four joints are PORT1 joint, PORT2 joint, PORT3 joint and PORT4 joint, the inner core parts of the PORT1 joint, the PORT2 joint, the PORT3 joint and the PORT4 joint are all extended into the cavity, and the invention can connect any two joints to obtain different filter bandwidths, thereby reducing design time, reducing resource waste and improving work efficiency.

Description

Technical Field

[0001] The invention belongs to the field of communication filter multiplexers, and in particular relates to a single-channel filter that realizes a multi-channel filter. Background Art

[0002] At present, in the field of wireless communications, due to different base station designs, different operators have different definitions of external connectors for products in the same frequency band. Therefore, during the design, development and production process, it is necessary to determine the specified connector model to be used based on the different requirements of customers.

[0003] Because filters are custom parts, customers often request customized filters with similar frequency bands but different passband widths. According to different requirements, designers will design each filter separately when the bandwidth indicators are not similar, which will inevitably lead to waste of resources, extra time and other unfavorable factors. Summary of the invention

[0004] In view of the different bandwidth requirements of existing customer filters, each filter needs to be designed separately, resulting in waste of resources and low work efficiency. The present invention provides a single-channel filter to realize a multi-channel filter.

[0005] To solve the above problems, the present invention adopts the following technical solutions:

[0006] A single-channel filter realizes a multi-channel filter, comprising a cavity, a cover plate connected to the top of the cavity, a tuning screw threadedly connected to the cover plate, a frequency point resonance column provided on the bottom inner wall of the cavity, four connectors installed on the front side of the cavity, the four connectors are respectively PORT1 connector, PORT2 connector, PORT3 connector and PORT4 connector, and the inner core parts of the PORT1 connector, the PORT2 connector, the PORT3 connector and the PORT4 connector all extend into the cavity.

[0007] In order to fix the tuning screws on the cover, fixing nuts are used for fixing. Preferably, there are nine tuning screws in total, and the tuning screws are evenly distributed on the horizontal axis position at the top of the cover. The outer wall of the tuning screw is connected with a fixing nut, and the fixing nut is against the top outer wall of the cover.

[0008] In order to fix the cover plate to the upper end of the cavity, preferably, the cavity and the cover plate are provided with matching cover plate screw holes, and the cover plate screw holes are connected with cover plate fixing screws. The number of the cover plate fixing screws is 10-20, and each of the cover plate fixing screws is against the top outer wall of the cover plate.

[0009] In order to allow the tuning screw to penetrate deeply into the frequency point resonance column, preferably, there are five frequency point resonance columns, the frequency point resonance columns are evenly distributed inside the cavity, the frequency point resonance columns are provided with grooves, and the tuning screw extends into the grooves of the frequency point resonance columns.

[0010] In order to fix the PORT1 connector at the front end of the cavity, preferably, the fixing plate portion of the PORT1 connector and the cavity are provided with matching PORT1 connector screw holes, and the PORT1 connector screw holes are connected with PORT1 fixing screws. There are four PORT1 fixing screws in total, and each of the PORT1 fixing screws is against the outer wall of the fixing plate of the PORT1 connector.

[0011] In order to fix the PORT2 connector at the front end of the cavity, preferably, the fixing plate portion of the PORT2 connector and the cavity are provided with matching PORT2 connector screw holes, and the PORT2 connector screw holes are connected with PORT2 fixing screws. There are four PORT2 fixing screws in total, and each of the PORT2 fixing screws is against the outer wall of the fixing plate of the PORT2 connector.

[0012] In order to fix the PORT3 connector at the front end of the cavity, preferably, the fixing plate part of the PORT3 connector and the cavity are provided with matching PORT3 connector screw holes, and the PORT3 connector screw holes are connected with PORT3 fixing screws. There are four PORT3 fixing screws in total, and each of the PORT3 fixing screws is against the outer wall of the fixing plate of the PORT3 connector.

[0013] In order to fix the PORT4 connector at the front end of the cavity, preferably, the fixing plate portion of the PORT4 connector and the cavity are provided with matching PORT4 connector screw holes, and the PORT4 connector screw holes are connected with PORT4 fixing screws. There are four PORT4 fixing screws in total, and each of the PORT4 fixing screws is against the outer wall of the fixing plate of the PORT4 connector.

[0014] In order to meet working requirements of different bandwidths, preferably, each of the PORT1 connector, the PORT2 connector, the PORT3 connector and the PORT4 connector has a different passband width.

[0015] In order to make the connector work better, preferably, the inner core part of each connector of the PORT1 connector, the PORT2 connector, the PORT3 connector and the PORT4 connector is located right in front of the frequency point resonant column.

[0016] Compared with the prior art, the present invention provides a single-channel filter to realize a multi-channel filter, and the present invention has the following beneficial effects:

[0017] The parts not involved in the device are the same as the prior art or can be implemented by the prior art. The present invention first uses a cover fixing screw on the cavity to fix the cover to the upper end of the cavity. A frequency point resonance column is provided inside the cavity. A fixing nut is used to fix the tuning screw on the upper end of the cover. Four connectors with different bandwidths are installed at the front end of the cavity. By using connectors with different bandwidths, connecting any two connectors during operation will obtain different filter bandwidths, and connectors with other bandwidths can be replaced to meet customer needs. The device can reduce design time, reduce resource waste, and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A top view of a schematic diagram of a structure of a single-channel filter realizing a multi-channel filter proposed by the present invention;

[0019] Figure 2 It is a front view of a schematic diagram of a structure of a single-channel filter realizing a multi-channel filter proposed by the present invention;

[0020] Figure 3 A rear view of a schematic diagram of a structure of a single-channel filter realizing a multi-channel filter proposed by the present invention;

[0021] Figure 4 It is a left view of a schematic diagram of a structure of a single-channel filter realizing a multi-channel filter proposed by the present invention;

[0022] Figure 5 This is a right view of a schematic diagram of a structure of a single-channel filter realizing a multi-channel filter proposed by the present invention;

[0023] Figure 6 A top view of a schematic diagram of a structure of a single-channel filter realizing a multi-channel filter hidden cover plate according to the present invention;

[0024] Figure 7 This is an overall schematic diagram of a single-channel filter proposed by the present invention to realize a multi-channel filter hidden cover structure;

[0025] Figure 8 This is an oblique side view of a hidden cover plate structure of a single-channel filter realizing a multi-channel filter proposed by the present invention.

[0026] In the figure: 1. cover; 2. cavity; 3. cover fixing screw; 4. tuning screw; 5. PORT1 connector; 6. PORT1 fixing screw; 7. PORT2 connector; 8. PORT2 fixing screw; 9. PORT3 connector; 10. PORT3 fixing screw; 11. PORT4 connector; 12. PORT4 fixing screw; 13. frequency point resonant column. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] Example:

[0030] Reference Figure 1-8 As shown, a single-channel filter realizes a multi-channel filter, including a cavity 2, a cover plate 1 is connected to the top of the cavity 2, a tuning screw 4 is threadedly connected to the cover plate 1, a frequency point resonance column 13 is provided on the bottom inner wall of the cavity 2, and four connectors are installed on the front side of the cavity 2, namely, PORT1 connector 5, PORT2 connector 7, PORT3 connector 9 and PORT4 connector 11, and the inner core parts of PORT1 connector 5, PORT2 connector 7, PORT3 connector 9 and PORT4 connector 11 all extend into the cavity 2.

[0031] like Figure 1 As shown, in order to fix the tuning screws 4 on the cover plate 1, fixing nuts are used for fixing. There are nine tuning screws 4 in total. The tuning screws 4 are evenly distributed on the horizontal axis position at the top of the cover plate 1. The outer wall of the tuning screws 4 is connected with a fixing nut, and the fixing nut is against the top outer wall of the cover plate 1.

[0032] like Figure 1 and Figure 6 As shown, in order to fix the cover 1 to the upper end of the cavity 2, the cavity 2 and the cover 1 are provided with matching cover screw holes, and the cover screw holes are connected with cover fixing screws 3. The number of cover fixing screws 3 is 10-20, and each cover fixing screw 3 is against the top outer wall of the cover 1.

[0033] like Figure 6 and Figure 7 As shown, in order to make the tuning screw 4 penetrate into the frequency point resonance column 13, there are five frequency point resonance columns 13, and the frequency point resonance columns 13 are evenly distributed inside the cavity 2. A groove is provided in the frequency point resonance column 13, and the tuning screw 4 extends into the groove of the frequency point resonance column 13.

[0034] like Figure 2 and Figure 7 As shown, in order to fix the PORT1 connector 5 at the front end of the cavity 2, the fixing plate part of the PORT1 connector 5 and the cavity 2 are provided with matching PORT1 connector screw holes, and the PORT1 connector screw holes are connected with PORT1 fixing screws 6. There are four PORT1 fixing screws 6 in total, and each PORT1 fixing screw 6 is against the outer wall of the fixing plate of the PORT1 connector 5.

[0035] like Figure 2 and Figure 7 As shown, in order to fix the PORT2 connector 7 at the front end of the cavity 2, the fixing plate portion of the PORT2 connector 7 and the cavity 2 are provided with matching PORT2 connector screw holes, and the PORT2 connector screw holes are connected with PORT2 fixing screws 8. There are four PORT2 fixing screws 8 in total, and each PORT2 fixing screw 8 is against the outer wall of the fixing plate of the PORT2 connector 7.

[0036] like Figure 2 and Figure 7 As shown, in order to fix the PORT3 connector 9 at the front end of the cavity 2, the fixing plate part of the PORT3 connector 9 and the cavity 2 are provided with matching PORT3 connector screw holes, and the PORT3 connector screw holes are connected with PORT3 fixing screws 10. There are four PORT3 fixing screws 10 in total, and each PORT3 fixing screw 10 is against the outer wall of the fixing plate of the PORT3 connector 9.

[0037] like Figure 2 and Figure 7 As shown, in order to fix the PORT4 connector 11 at the front end of the cavity 2, the fixing plate portion of the PORT4 connector 11 and the cavity 2 are provided with matching PORT4 connector screw holes, and the PORT4 fixing screws 12 are connected to the PORT4 connector screw holes. There are four PORT4 fixing screws 12 in total, and each PORT4 fixing screw 12 is against the outer wall of the fixing plate of the PORT4 connector 11.

[0038] In order to meet working requirements of different bandwidths, each of the PORT1 connector 5, the PORT2 connector 7, the PORT3 connector 9 and the PORT4 connector 11 has a different passband width.

[0039] like Figure 8As shown, in order to make the connector work better, the inner core part of each connector of PORT1 connector 5, PORT2 connector 7, PORT3 connector 9 and PORT4 connector 11 is located right in front of the frequency point resonance column 13.

[0040] The present invention is applied to the field of communication filter multiplexers. First, a cover plate 1 is fixed to the upper end of the cavity 2 using a cover plate fixing screw 3 on the cavity 2. A frequency point resonance column is provided inside the cavity 2. A tuning screw 4 is fixed to the upper end of the cover plate using a fixing nut. Four connectors with different bandwidths are installed at the front end of the cavity 2. By using connectors with different bandwidths, different filter bandwidths can be obtained by connecting any two connectors during operation, thereby meeting customer needs. Connectors with other bandwidths can be replaced. The device can reduce design time, reduce resource waste, and improve work efficiency.

[0041] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A single-channel filter realizes a multi-channel filter, comprising a cavity (2), characterized in that: The top of the cavity (2) is connected to a cover plate (1), a tuning screw (4) is threadedly connected to the cover plate (1), a frequency point resonance column (13) is provided on the bottom inner wall of the cavity (2), and four connectors are installed on the front side of the cavity (2), the four connectors are respectively a PORT1 connector (5), a PORT2 connector (7), a PORT3 connector (9) and a PORT4 connector (11), and the inner core parts of the PORT1 connector (5), the PORT2 connector (7), the PORT3 connector (9) and the PORT4 connector (11) all extend into the cavity (2); There are nine tuning screws (4) in total. The tuning screws (4) are evenly distributed at the transverse axis position of the top end of the cover plate (1). The outer wall of the tuning screw (4) is connected with a fixing nut, and the fixing nut abuts against the top outer wall of the cover plate (1). The cavity (2) and the cover plate (1) are both provided with matching cover plate screw holes, and the cover plate fixing screws (3) are connected in the cover plate screw holes. The number of the cover plate fixing screws (3) is 10-20, and each of the cover plate fixing screws (3) abuts against the top outer wall of the cover plate (1); There are five frequency point resonant columns (13) in total. The frequency point resonant columns (13) are evenly distributed inside the cavity (2). A groove is provided inside the frequency point resonant column (13). The tuning screw (4) extends into the groove of the frequency point resonant column (13). Each of the PORT1 connector (5), the PORT2 connector (7), the PORT3 connector (9) and the PORT4 connector (11) has a different bandpass width; The inner core portion of each of the PORT1 connector (5), the PORT2 connector (7), the PORT3 connector (9) and the PORT4 connector (11) is located directly in front of the frequency point resonant column (13).

2. A single-channel filter according to claim 1 realizes a multi-channel filter, characterized in that: The fixing plate portion of the PORT1 connector (5) and the cavity (2) are both provided with matching PORT1 connector screw holes, and the PORT1 connector screw holes are connected with PORT1 fixing screws (6). There are four PORT1 fixing screws (6) in total, and each of the PORT1 fixing screws (6) abuts against the outer wall of the fixing plate of the PORT1 connector (5).

3. A single-channel filter according to claim 1 realizes a multi-channel filter, characterized in that: The fixing plate portion of the PORT2 connector (7) and the cavity (2) are both provided with matching PORT2 connector screw holes, and a PORT2 fixing screw (8) is connected to the PORT2 connector screw hole. There are four PORT2 fixing screws (8) in total, and each of the PORT2 fixing screws (8) abuts against the outer wall of the fixing plate of the PORT2 connector (7).

4. A single-channel filter according to claim 1 realizes a multi-channel filter, characterized in that: The fixing plate portion of the PORT3 connector (9) and the cavity (2) are both provided with matching PORT3 connector screw holes, and a PORT3 fixing screw (10) is connected to the PORT3 connector screw hole. There are four PORT3 fixing screws (10) in total, and each of the PORT3 fixing screws (10) is abutted against the outer wall of the fixing plate of the PORT3 connector (9).

5. A single-channel filter according to claim 1 realizes a multi-channel filter, characterized in that: The fixing plate portion of the PORT4 connector (11) and the cavity (2) are both provided with matching PORT4 connector screw holes, and a PORT4 fixing screw (12) is connected to the PORT4 connector screw hole. There are four PORT4 fixing screws (12) in total, and each of the PORT4 fixing screws (12) is abutted against the outer wall of the fixing plate of the PORT4 connector (11).

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