CN218976688U

CN218976688U - Multichannel radio frequency optical module and VPX board card

Info

Publication number: CN218976688U
Application number: CN202223425421.8U
Authority: CN
Inventors: 张先锋
Original assignee: Wuhan Sighop Technologies Co ltd
Current assignee: Wuhan Sighop Technologies Co ltd
Priority date: 2022-12-21
Filing date: 2022-12-21
Publication date: 2023-05-05
Anticipated expiration: 2032-12-21

Abstract

The utility model provides a multichannel radio frequency optical module, which comprises a shell, an inner printed board combination and an outer printed board, wherein the outer printed board is fixedly arranged on the outer side of a side wall of the shell, a plurality of accommodating cavities are arranged in the shell side by side along the length direction of the outer printed board, an inner printed board combination is fixedly arranged in each accommodating cavity, the accommodating cavities are divided into an upper layer and a lower layer by the inner printed board combination, a group of radio frequency electric interfaces, optical interfaces and wave needles are respectively and correspondingly arranged on the upper layer and the lower layer of each accommodating cavity, the wave needles are welded on the outer printed board, the radio frequency electric interfaces and the optical interfaces are fixedly arranged on the side wall of the shell opposite to the outer printed board, and pins of the radio frequency electric interfaces, the optical interfaces and the wave needles extend into the accommodating cavities to be welded with the inner printed board combination. The module integrates a plurality of independent photoelectric conversion units through the design of the accommodating cavity in the shell, has compact structure, effectively improves the space utilization rate, and solves the problem of multi-channel installation and use under the condition of the prior standard VPX plate clamping ring.

Description

Multichannel radio frequency optical module and VPX board card

Technical Field

The utility model belongs to the technical field of optical communication modules, and particularly relates to a multichannel radio frequency optical module and a VPX board card.

Background

The Radio On Fiber (ROF) technology is increasingly applied to 5G wireless small stations, and the purposes of sharing the information of a Central Station (CS) and controlling resources of a plurality of Base Stations (BS) can be achieved through the Radio frequency technology, so that the energy consumption and the operation cost are greatly reduced.

As shown in FIG. 1, the single-channel radio frequency module has a radio frequency photoelectric (electro-optic) conversion function, and is composed of a radio frequency electric interface, a coaxial laser or detector optical interface, a metal wave needle power supply and control interface, a printed board assembled and packaged in a metal shell, and the metal shell is composed of a base and an upper cover.

With the rapid development of radio frequency microwave and optical fiber communication, the transmission channel of the optical fiber communication equipment is multiplied, and the density of the transmission channel and the installation and use space are required to be higher.

In the prior art, under the multi-channel application scene, a plurality of single-channel radio frequency modules are required to be combined together for use, and the prior art is difficult to install and fix in a narrow space inside the equipment and in a standard VPX board card environment because of the limitation of the size of the single-channel radio frequency modules, and is difficult to meet the use requirement because of the limitation of the height.

Disclosure of Invention

The utility model aims to provide a multichannel radio frequency optical module which can at least solve partial defects in the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a multichannel radio frequency optical module, includes casing, inside printed board combination and outside printed board, outside printed board fixed mounting is in the casing outside along the lateral wall of length direction, the casing is inside to have a plurality of holding chambeies of arranging side by side along its length direction, each inside printed board combination of fixed mounting in the holding chamber, and inside printed board combination separates into upper and lower two-layer with the holding chamber, every two-layer respectively corresponds the upper and lower two-layer of arranging a set of radio frequency electric interface, optical interface and the wave needle of holding chamber, the wave needle welds on outside printed board, radio frequency electric interface and optical interface fixed mounting are on the casing on the lateral wall opposite with outside printed board, the pin of radio frequency electric interface, optical interface and wave needle all extends to holding intracavity and interior printed board combination welding.

Further, the upper layer and the lower layer of each containing cavity are correspondingly provided with a detachable cover plate.

Further, the internal printed board combination comprises a first printed board and a second printed board, the first printed board and the second printed board are arranged in an up-down superposition mode, a group of radio frequency electric interfaces, optical interfaces and pins of the wave needles on the upper layer of the accommodating cavity are welded with the first printed board, and a group of radio frequency electric interfaces, optical interfaces and pins of the wave needles on the lower layer of the accommodating cavity are welded with the second printed board.

Furthermore, the radio frequency electric interfaces and the optical interfaces of the upper layer and the lower layer of the accommodating cavity are arranged in a staggered manner.

Further, the optical interface is a pigtail coaxial laser or a detector optical interface.

Furthermore, the external printed board is locked and fixed with the side wall of the shell through a plurality of screws, and a certain gap is reserved between the external printed board and the side wall of the shell.

Further, a locking piece for fixing the optical interface is arranged on the side wall of the shell corresponding to the optical interface mounting position.

Further, isolation ribs are arranged between the adjacent accommodating cavities.

Furthermore, a plurality of mounting feet are arranged at the bottom of the outer side of the shell.

In addition, the utility model also provides a VPX board card, which comprises a 6U panel, a printed board, a 6U VPX connector, an upper cover body and the multichannel radio frequency optical module, wherein the multichannel radio frequency optical module is fixedly arranged on the printed board, and a radio frequency electric interface and an optical interface of the multichannel radio frequency optical module are connected to the 6U VPX connector.

Compared with the prior art, the utility model has the beneficial effects that:

according to the multi-channel radio frequency optical module provided by the utility model, the plurality of independent photoelectric conversion units are integrated and arranged by designing the accommodating cavity in the shell, so that the structure is compact, the adjacent photoelectric conversion units have mutual shielding performance, the space utilization rate is effectively improved, and the problem of multi-channel installation and use under the condition of the existing standard VPX plate clamping ring is solved.

The present utility model will be described in further detail with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic diagram of a prior art single channel RF module;

FIG. 2 is a schematic diagram of a multi-channel RF optical module according to the present utility model;

FIG. 3 is a schematic diagram of a multi-channel RF optical module according to the present utility model;

FIG. 4 is an exploded view of a multi-channel RF optical module of the present utility model;

fig. 5 is a schematic structural diagram of a housing in the multi-channel rf optical module of the present utility model;

FIG. 6 is a schematic diagram showing the connection of the RF electrical interface, the optical interface, the wave needle and the internal printed board combination in the present utility model;

fig. 7 is a schematic structural diagram of the VPX board in the present utility model.

Reference numerals illustrate: 1. a radio frequency electrical interface; 2. an optical interface; 3. a wave needle; 4. a housing; 5. an external printed board; 6. a cover plate; 7. an internal printed board assembly; 8. a receiving chamber; 9. a mounting foot; 10. a locking member; 11. a screw hole; 12. an upper cover; 13. a 6U VPX connector; 14. a printed board; 15. 6U panel.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or by an abutting connection or integrally connected; the specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second" may include one or more such features, either explicitly or implicitly; in the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

As shown in fig. 2, 3, 4 and 5, the present embodiment provides a multi-channel radio frequency optical module, including a housing 4, an inner printed board assembly 7 and an outer printed board 5, where the housing 4 is a hollow box-shaped structure, the outer printed board 5 is fixedly installed on the outer side of a side wall of the housing 4 along the length direction, the housing 4 is internally provided with a plurality of accommodating cavities 8 arranged side by side along the length direction, each accommodating cavity 8 is fixedly provided with an inner printed board assembly 7, the accommodating cavities 8 are separated into an upper layer and a lower layer by the inner printed board assembly 7, each upper layer and each lower layer of the accommodating cavities 8 are respectively and correspondingly provided with a group of photoelectric conversion units, the photoelectric conversion units include a radio frequency electrical interface 1, an optical interface 2 and a wave needle 3, the wave needle 3 is welded on the outer printed board 5, the radio frequency electrical interface 1 and the optical interface 2 are fixedly installed on a side wall of the housing 4 opposite to the outer printed board 5, as shown in fig. 6, and the radio frequency electrical interface 1, the optical interface 2 and the wave needle 3 extend into the accommodating cavities 7 and the inner printed board assembly 7. In this embodiment, through design accommodation chamber 8 with a plurality of independent photoelectric conversion units integrated settings in casing 4, photoelectric conversion unit is the upper and lower floor arrangement in accommodation chamber 8 simultaneously, compact structure has effectively improved space utilization.

Specifically, the internal printed board assembly 7 comprises a first printed board and a second printed board, the first printed board and the second printed board are arranged in an up-down superposition manner, and four corners of the first printed board and the second printed board are locked and fixed with the shell 4 through screws and screw holes; the pins of the group of radio frequency electric interfaces 1, the optical interfaces 2 and the wave needles 3 at the upper layer of the accommodating cavity 8 are welded with the first printed board, and the pins of the group of radio frequency electric interfaces 1, the optical interfaces 2 and the wave needles 3 at the lower layer of the accommodating cavity 8 are welded with the second printed board; through the structural design, signal crosstalk between the photoelectric conversion units on the upper layer and the lower layer of the accommodating cavity 8 is effectively reduced.

Optimally, the radio frequency electric interfaces 1 and the optical interfaces 2 of the upper layer and the lower layer of the accommodating cavity 8 are arranged in a staggered manner, so that signal crosstalk between the photoelectric conversion units of the upper layer and the lower layer of the accommodating cavity 8 is further reduced.

Further, isolation ribs are arranged between the adjacent accommodating cavities 8, and signal crosstalk between the photoelectric conversion units in the adjacent accommodating cavities 8 is reduced through the isolation ribs.

Specifically, the optical interface 2 is a pigtail coaxial laser or a detector optical interface, and is configured to transmit an optical signal to the outside or receive an optical signal from the outside. Optionally, as shown in fig. 5, a locking member 10 for fixing the optical interface 2 is disposed on the side wall of the housing 4 corresponding to the mounting position of the optical interface 2, a mounting hole for mounting the optical interface 2 is formed in the middle of the locking member 10, the mounting hole is communicated with the interior of the accommodating cavity 8, a screw hole 11 is formed in the side wall of the locking member 10, one end of a pin of the optical interface 2 passes through the mounting hole and extends into the accommodating cavity 8 to be welded with the inner printed board assembly 7, and meanwhile, a screw is used to pass through the screw hole 11 on the locking member 10, so that the optical interface 2 is locked and fixed in the locking member 10.

As shown in fig. 2 and 3, the radio frequency electric interface 1 is installed in a corresponding installation hole on the side wall of the housing 4, the pogo pin 2 is installed in an external printed board 5 and welded in a soldering manner, the external printed board 5 is locked and fixed with the side wall of the housing 4 through a plurality of screws, and a certain gap is formed between the external printed board 5 and the side wall of the housing 4.

Optionally, a detachable cover plate 6 is correspondingly arranged on the upper layer and the lower layer of each accommodating cavity 8, so that independent assembly, debugging and maintenance of a single radio frequency photoelectric conversion unit are facilitated; when assembled, the cover plate 6 is installed in the shell 4 and locked and fixed with the shell 4 through screws.

Optionally, a plurality of mounting pins 9 are arranged at the bottom of the outer side of the shell 4 and are used for integrally mounting and fixing the multichannel radio frequency optical module.

The multichannel radio frequency optical module provided by the embodiment has the advantages that the structure is compact, the mutual shielding performance is realized between the adjacent photoelectric conversion units, the elements are locked by the bolts, the installation is firm and reliable, the maintenance and the disassembly are convenient, and the space utilization rate is improved.

The multichannel radio frequency optical module provided by the embodiment has a compact structure, can be independently applied as an independent module, is also applicable to installation and use in a standard 6U VPX board card, and can effectively solve the problem of installation and use of multiple channels under the condition of the existing standard VPX board clamping ring.

As shown in fig. 7, this embodiment further provides a VPX board card, which includes a 6U panel 15, a printed board 14, a 6U VPX connector 13, an upper cover 12, and the above-mentioned multi-channel rf optical module, where the multi-channel rf optical module is fixedly mounted on the printed board 14 by screws, and the rf electrical interface 1 and the optical interface 2 of the multi-channel rf optical module are connected to the 6U VPX connector 13.

The foregoing examples are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model, and all designs that are the same or similar to the present utility model are within the scope of the present utility model.

Claims

1. A multi-channel radio frequency optical module, characterized in that: the device comprises a shell, an inner printed board combination and an outer printed board, wherein the outer printed board is fixedly arranged on the outer side of a side wall of the shell along the length direction, a plurality of accommodating cavities are arranged in the shell side by side along the length direction of the outer printed board, an inner printed board combination is fixedly arranged in each accommodating cavity, the accommodating cavities are divided into an upper layer and a lower layer by the inner printed board combination, a group of radio frequency electric interfaces, optical interfaces and wave needles are correspondingly arranged on the upper layer and the lower layer of each accommodating cavity respectively, the wave needles are welded on the outer printed board, the radio frequency electric interfaces and the optical interfaces are fixedly arranged on the side wall of the shell opposite to the outer printed board, and pins of the radio frequency electric interfaces, the optical interfaces and the wave needles extend into the accommodating cavities to be welded with the inner printed board combination.

2. The multi-channel rf optical module of claim 1, wherein: the upper layer and the lower layer of each containing cavity are correspondingly provided with a detachable cover plate.

3. The multi-channel rf optical module of claim 1, wherein: the internal printed board combination comprises a first printed board and a second printed board, the first printed board and the second printed board are arranged in an up-down overlapping mode, a group of radio frequency electric interfaces, optical interfaces and pins of a wave needle on the upper layer of the accommodating cavity are welded with the first printed board, and a group of radio frequency electric interfaces, optical interfaces and pins of a wave needle on the lower layer of the accommodating cavity are welded with the second printed board.

4. The multi-channel rf optical module of claim 1, wherein: the radio frequency electric interfaces and the optical interfaces of the upper layer and the lower layer of the accommodating cavity are arranged in a staggered mode.

5. The multi-channel rf optical module of claim 1, wherein: the optical interface is a tail fiber type coaxial laser or detector optical interface.

6. The multi-channel rf optical module of claim 1, wherein: the external printed board is locked and fixed with the side wall of the shell through a plurality of screws, and a certain gap is reserved between the external printed board and the side wall of the shell.

7. The multi-channel rf optical module of claim 1, wherein: and a locking piece for fixing the optical interface is arranged on the side wall of the shell corresponding to the optical interface mounting position.

8. The multi-channel rf optical module of claim 1, wherein: and isolation ribs are arranged between the adjacent accommodating cavities.

9. The multi-channel rf optical module of claim 1, wherein: the bottom outside the shell is provided with a plurality of mounting feet.

10. The VPX board card is characterized in that: the multi-channel radio frequency optical module comprises a 6U panel, a printed board, a 6U VPX connector, an upper cover body and the multi-channel radio frequency optical module according to any one of claims 1 to 9, wherein the multi-channel radio frequency optical module is fixedly arranged on the printed board, and a radio frequency electric interface and an optical interface of the multi-channel radio frequency optical module are connected to the 6U VPX connector.