Common end coupling device of cavity multiplexer

Abstract

The utility model discloses a common terminal coupling device of a cavity multiplexer, which comprises a shell, a plurality of resonators and a coupling device, the shell is provided with a plurality of cavities, all the cavities are arranged in two rows in parallel, and one side of each row of cavities far away from the other row of cavities is provided with a connecting hole; the resonators are in one-to-one correspondence with the cavities and are arranged in the corresponding cavities, and the connecting ends of the resonators are aligned with the corresponding connecting holes; the coupling device is provided with a plurality of coupling rods, the coupling rods are in one-to-one correspondence with the resonators and are connected with the resonators, and the coupling device is provided with a connector. The problem that miniaturization design of an existing multiplexer is difficult to achieve can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of wireless microwave communication, and particularly relates to a common end coupling device for a cavity multiplexer. Background Art

[0002] As the mainstream device for frequency-selective separation and combination of multi-channel signals, multiplexers are widely used in the field of wireless microwave communication. With the increasing improvement of communication quality and the increasingly fine segmentation of frequency band resources, the scheme of sharing the same transceiver antenna for multiple signals is favored by many communication system designers. Especially the design demand for miniaturized multiplexers is increasing day by day, and correspondingly, the requirements for the weight and external dimensions of miniaturized multiplexers are becoming more and more strict.

[0003] For the design of multiplexers, the current implementation forms in the industry include microstrip lines, striplines, and waveguide multiplexers. Relatively speaking, the design of coaxial cavity multiplexers is more common. The design size of traditional coaxial cavity multiplexers is relatively large, and the common end coupling form generally requires the introduction of co-cavity coupling, making it difficult to meet the design requirements of miniaturization. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a common end coupling device for a cavity multiplexer, so as to solve the problem that the existing multiplexer is difficult to achieve miniaturized design.

[0005] The utility model is realized by the following technical solutions:

[0006] A common end coupling device for a cavity multiplexer includes: a housing, the housing is provided with a plurality of cavities, all the cavities are arranged in two parallel rows, and a connection hole is opened on one side of each row of cavities away from the other row of cavities; a plurality of resonators, the resonators correspond to the cavities one by one and are arranged in the corresponding cavities, and the connection ends of the resonators are aligned with the corresponding connection holes; a coupling device, the coupling device is provided with a plurality of coupling rods, the coupling rods correspond to the resonators one by one and are connected, and the coupling device is provided with a connector.

[0007] Optionally, the number of the cavities is 4, which are respectively a first cavity, a second cavity, a third cavity and a fourth cavity; the number of the resonators is 4, which are respectively a first resonator, a second resonator, a third resonator and a fourth resonator; the first resonator is arranged in the first cavity; the second resonator is arranged in the second cavity; the third resonator is arranged in the third cavity; the fourth resonator is arranged in the fourth cavity; the first cavity and the second cavity are in the same row, and the third cavity and the fourth cavity are in the same row.

[0008] Optionally, the first cavity and the third cavity are in the same column, and the second cavity and the fourth cavity are in the same column.

[0009] Optionally, the housing includes a housing body, a top cover and a bottom cover. The housing body is provided with an inner cavity, and opposite sides of the inner cavity penetrate through the housing body respectively to form a top opening and a bottom opening. The top cover and the bottom cover are detachably covered with the housing body respectively. The top cover can close or open the top opening, and the bottom cover can close or open the bottom opening. A longitudinal partition and a transverse partition arranged in a cross shape are provided inside the housing body to divide the inner cavity into the first cavity, the second cavity, the third cavity and the fourth cavity. Two of the connecting holes are opened on the top cover, and two of the connecting holes are opened on the bottom cover.

[0010] Optionally, connecting bosses are respectively provided on the parts of the transverse partition in the first cavity, the second cavity, the third cavity and the fourth cavity. The connecting bosses can be detachably inserted into the resonator.

[0011] Optionally, the resonator is cylindrical, a slot matching the boss is recessed at the tail end of the resonator, and the head end of the resonator is a connecting end and is aligned with the corresponding connecting hole.

[0012] Optionally, a plurality of connection holes are opened on the side wall of the resonator, a tap wire is detachably connected to the connection hole, and one end of the tap wire away from the connection hole is connected to the corresponding coupling rod.

[0013] Optionally, the coupling device is in a cuboid shape and is arranged at the intersection of the longitudinal partition and the transverse partition. Four of the coupling rods are respectively arranged at four corners of the coupling device and are respectively inserted into the corresponding cavities.

[0014] Optionally, a pair of supporting media is further included. The supporting media are in strip shapes. One strip is clamped between the first resonator and the second resonator, and the other strip is clamped between the third resonator and the fourth resonator. The coupling device is clamped between the ends of the two supporting media.

[0015] Optionally, the connector includes a dielectric cylinder and an inner conductor. The inner conductor penetrates through the dielectric cylinder. One end of the dielectric cylinder is vertically connected to the coupling device, and the other end is located outside the housing body.

[0016] Compared with the prior art, the present utility model has the following advantages and beneficial effects:

[0017] A common-end coupling device for a cavity multiplexer provided by the present utility model optimizes and utilizes the internal space of the housing by setting a housing, opening a plurality of non-connected and non-shared cavities in the housing, and arranging the cavities in two parallel rows, so that the connection holes are respectively arranged on two opposite sides of the housing, doubling the number of connection holes on the basis of the same length of the housing, providing a structural basis for the miniaturization of the housing on the premise of ensuring the same number of resonators; on this basis, by setting a coupling device to couple a plurality of resonators, the setting of a common cavity is avoided, further optimizing and reducing the volume of the housing to further meet the requirements of miniaturization; through the mutual cooperation of the above features, the common-end coupling device for the cavity multiplexer can effectively solve the problem that it is difficult to achieve miniaturized design for existing multiplexers. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, form a part of this application, and do not constitute a limitation on the embodiments of the present utility model. In the drawings:

[0019] Figure 1 is a schematic diagram of a common-end coupling device for a cavity multiplexer provided by an embodiment of the present utility model;

[0020] Figure 2 is an exploded schematic diagram of a common-end coupling device for a cavity multiplexer provided by an embodiment of the present utility model.

[0021] Marks in the drawings and corresponding component names:

[0022] 10 - housing; 101 - housing body; 102 - top cover; 103 - bottom cover; 104 - longitudinal partition; 105 - transverse partition; 106 - connecting boss; 11 - first cavity; 12 - second cavity; 13 - third cavity; 14 - fourth cavity; 15 - connection hole; 21 - first resonator; 22 - second resonator; 23 - third resonator; 24 - fourth resonator; 25 - connection hole; 26 - tap wire; 30 - coupling device; 31 - coupling rod; 32 - connector; 321 - dielectric cylinder; 322 - inner conductor; 40 - supporting medium. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] To make the purpose, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the embodiments and the drawings. The illustrative embodiments and descriptions thereof of the present utility model are only used to explain the present utility model and do not constitute a limitation on the present utility model.

[0024] Please refer to Figure 1 and Figure 2, an embodiment of the present utility model provides a common end coupling device for a cavity multiplexer, including: a housing 10, the housing 10 is provided with a plurality of cavities, all the cavities are arranged in two parallel rows, and a connection hole 15 is opened on one side of each row of cavities away from the other row of cavities; Second, it includes a plurality of resonators, the resonators correspond to the cavities one by one and are arranged in the corresponding cavities, and the connection ends of the resonators are aligned with the corresponding connection holes 15; Third, it includes a coupling device 30, the coupling device 30 is provided with a plurality of coupling rods 31, the coupling rods 31 correspond to the resonators one by one and are connected, and the coupling device 30 is provided with a connector 32.

[0025] In the common end coupling device for a cavity multiplexer provided in this embodiment, by providing the housing 10, a plurality of non-connected and non-shared cavities are opened in the housing 10, and the cavities are arranged in two parallel rows, which fully optimizes and utilizes the internal space of the housing 10, so that the connection holes 15 are respectively arranged on the opposite sides of the housing 10, so as to double the number of connection holes 15 on the basis of the same length of the housing 10, so as to provide a structural basis for the miniaturization of the housing 10 on the premise of keeping the number of resonators unchanged; On this basis, by providing the coupling device 30, a plurality of resonators are coupled, thereby avoiding the setting of a common cavity, further optimizing and reducing the volume of the housing 10, so as to further meet the requirements of miniaturization; Through the mutual cooperation of the above features, the common end coupling device for a cavity multiplexer can effectively solve the problem that it is difficult to realize the miniaturized design of the existing multiplexer.

[0026] Specifically, in this embodiment, the number of the cavities is 4, which are the first cavity 11, the second cavity 12, the third cavity 13 and the fourth cavity 14 respectively; the number of the resonators is 4, which are the first resonator 21, the second resonator 22, the third resonator 23 and the fourth resonator 24 respectively; the first resonator 21 is arranged in the first cavity 11; the second resonator 22 is arranged in the second cavity 12; the third resonator 23 is arranged in the third cavity 13; the fourth resonator 24 is arranged in the fourth cavity 14; the first cavity 11 and the second cavity 12 are in the same row, and the third cavity 13 and the fourth cavity 14 are in the same row.

[0027] It should be noted that the first cavity 11, the second cavity 12, the third cavity 13 and the fourth cavity 14 can be arranged on the same plane, or on two or more parallel planes, and are preferably arranged on the same plane.

[0028] Specifically, the first cavity 11 and the third cavity 13 are in the same column, and the second cavity 12 and the fourth cavity 14 are in the same column.

[0029] For further explanation of the specific structure of the housing 10, the housing 10 includes a housing body 101, a top cover 102 and a bottom cover 103. The housing body 101 is provided with an inner cavity. Opposite sides of the inner cavity penetrate through the housing body 101 respectively to form a top opening and a bottom opening. The top cover 102 and the bottom cover 103 are respectively detachably covered with the housing body 101. The top cover 102 can close or open the top opening, and the bottom cover 103 can close or open the bottom opening. A longitudinal partition 104 and a transverse partition 105 are arranged in a cross shape in the housing body 101 to divide the inner cavity into a first cavity 11, a second cavity 12, a third cavity 13 and a fourth cavity 14. Two connection holes 15 are opened on the top cover 102, and two connection holes 15 are opened on the bottom cover 103.

[0030] For effective fixation of the resonator in the cavity, connection bosses 106 are respectively arranged on the parts of the transverse partition 105 located in the first cavity 11, the second cavity 12, the third cavity 13 and the fourth cavity 14. The connection bosses 106 can be detachably inserted with the resonator.

[0031] For further explanation of the shape of the resonator, the resonator is cylindrical. A slot matching the boss 106 is recessed at the tail end of the resonator. The head end of the resonator is a connection end and is aligned with the corresponding connection hole 15.

[0032] For further explanation of the connection mode between the resonator and the coupling rod 31, a plurality of connection holes 25 are opened on the side wall of the resonator. A tap wire 26 is detachably connected to the connection hole 25. One end of the tap wire 26 far from the connection hole 25 is connected to the corresponding coupling rod 31.

[0033] The connection hole 25 can be selected optionally according to requirements. The diameter and length of the tap wire 26 are set according to requirements. Here, the requirements refer to the port delay value required for the single-channel design bandwidth.

[0034] For further explanation of the specific shape of the coupling device 30, the coupling device 30 is in a cuboid shape and is arranged at the intersection of the longitudinal partition 104 and the transverse partition 105. Four coupling rods 31 are respectively arranged at four corners of the coupling device 30 and are respectively inserted into the corresponding cavities, so that the coupling device 30 is in the shape of a four-legged square table.

[0035] It should be noted that in this embodiment, the coupling rod 31 and the coupling device 30 are integrally formed.

[0036] To structurally support the coupling device 30, the common-end coupling device of the cavity multiplexer further includes a pair of support media 40. The support media 40 are strip-shaped. One is clamped between the first resonator 21 and the second resonator 22, and the other is clamped between the third resonator 23 and the fourth resonator 24. The coupling device 30 is clamped between the ends of the two support media 40.

[0037] It should be noted that through grooves and holes are formed in the side walls of the support media 40 to reduce the relative dielectric constant of the support media 40.

[0038] To further explain the structure of the connector 32, the connector 32 includes a dielectric cylinder 321 and an inner conductor 322. The inner conductor 322 passes through the dielectric cylinder 321. One end of the dielectric cylinder 321 is vertically connected to the coupling device 30, and the other end is located outside the housing 101.

[0039] The specific embodiments described above have further elaborated on the purpose, technical solutions, and beneficial effects of the present invention. It should be understood that the above are only specific embodiments of the present invention and are not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A common terminal coupling device for a cavity multiplexer, characterized in that Comprising: A housing (10), wherein the housing (10) is provided with a plurality of cavities, and all the cavities are arranged in two parallel rows, and connection holes (15) are formed on one side of each row of cavities away from the other row of cavities; A plurality of resonators, which correspond to the cavities one by one and are arranged in the corresponding cavities, and the connection ends of the resonators are aligned with the corresponding connection holes (15); A coupling device (30), the coupling device (30) is provided with a plurality of coupling rods (31), the coupling rods (31) correspond to the resonators one by one and are connected, and the coupling device (30) is provided with a connector (32).

2. The common terminal coupling device of the cavity multiplexer according to claim 1, wherein The number of the cavities is 4, which are respectively a first cavity (11), a second cavity (12), a third cavity (13) and a fourth cavity (14); The number of the resonators is 4, which are respectively a first resonator (21), a second resonator (22), a third resonator (23) and a fourth resonator (24); The first resonator (21) is arranged in the first cavity (11); The second resonator (22) is arranged in the second cavity (12); The third resonator (23) is arranged in the third cavity (13); The fourth resonator (24) is arranged in the fourth cavity (14); The first cavity (11) and the second cavity (12) are in the same row, and the third cavity (13) and the fourth cavity (14) are in the same row.

3. The common terminal coupling device of the cavity multiplexer according to claim 2, characterized in that, The first cavity (11) and the third cavity (13) are in the same column, and the second cavity (12) and the fourth cavity (14) are in the same column.

4. The common terminal coupling device of the cavity multiplexer according to claim 3, characterized in that, The housing (10) includes a housing body (101), a top cover (102) and a bottom cover (103), the housing body (101) is provided with an inner cavity, and opposite sides of the inner cavity penetrate through the housing body (101) respectively to form a top opening and a bottom opening, the top cover (102) and the bottom cover (103) are respectively detachably covered on the housing body (101), the top cover (102) can close or open the top opening, and the bottom cover (103) can close or open the bottom opening; A longitudinal partition plate (104) and a transverse partition plate (105) which are arranged in a cross shape are arranged in the housing body (101) to divide the inner cavity into the first cavity (11), the second cavity (12), the third cavity (13) and the fourth cavity (14); 2 of the connection holes (15) are formed on the top cover (102), and 2 of the connection holes (15) are formed on the bottom cover (103).

5. The common terminal coupling device of the cavity multiplexer according to claim 4, characterized in that Connection bosses (106) are respectively arranged on the parts of the transverse partition plate (105) in the first cavity (11), the second cavity (12), the third cavity (13) and the fourth cavity (14), and the connection bosses (106) can be detachably inserted into the resonators.

6. The common terminal coupling device of the cavity multiplexer according to claim 5, characterized in that The resonator is cylindrical, a slot matching with the boss (106) is recessed at the tail end of the resonator, and the head end of the resonator is a connection end and is aligned with the corresponding connection hole (15).

7. The common-end coupling device of the cavity multiplexer according to claim 6, characterized in that A plurality of connection holes (25) are formed in the side wall of the resonator, and a tap wire (26) is detachably connected to the connection hole (25). One end of the tap wire (26) away from the connection hole (25) is connected to the corresponding coupling rod (31).

8. The common terminal coupling device of the cavity multiplexer according to claim 7, characterized in that, The coupling device (30) is in a cuboid shape and is arranged at the intersection of the longitudinal partition plate (104) and the transverse partition plate (105); Four of the coupling rods (31) are respectively arranged at the four corners of the coupling device (30) and are respectively inserted into the corresponding cavities.

9. The common-end coupling device of the cavity multiplexer according to claim 8, characterized in that, It further includes a pair of support media (40). The support media (40) are in strip shapes. One strip is clamped between the first resonator (21) and the second resonator (22), and the other strip is clamped between the third resonator (23) and the fourth resonator (24); The coupling device (30) is clamped between the ends of the two support media (40).

10. The common-end coupling device of the cavity multiplexer according to claim 9, characterized in that, The connector (32) includes a dielectric cylinder (321) and an inner conductor (322). The inner conductor (322) passes through the dielectric cylinder (321). One end of the dielectric cylinder (321) is vertically connected to the coupling device (30), and the other end is located outside the housing body (101).

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