CN210093219U

CN210093219U - Multi-frequency band signal combiner

Info

Publication number: CN210093219U
Application number: CN201920910928.1U
Authority: CN
Inventors: 徐勇
Original assignee: CHENGDU LINGTAI TECHNOLOGY Co Ltd
Current assignee: CHENGDU LINGTAI TECHNOLOGY Co Ltd
Priority date: 2019-06-17
Filing date: 2019-06-17
Publication date: 2020-02-18
Anticipated expiration: 2029-06-17

Abstract

The utility model discloses a multi-band signal combiner, which comprises a cavity and a signal output port, wherein the interior of the cavity is divided into a plurality of filter cavities corresponding to each network (2.4G, 4G and 5.8G networks) through a partition plate, and the rear end of the cavity is respectively provided with a signal input port corresponding to the plurality of filter cavities; resonance columns are sequentially arranged in each filter cavity, a coupling window is arranged between adjacent resonance columns in each filter cavity, and a signal output port is communicated with each filter cavity; therefore, communication signals with various frequencies can be combined and uniformly sent through the signal output port, so that the installation of communication equipment during multi-network coverage can be greatly simplified, the cost of the communication equipment is reduced, and the real multi-frequency combining is realized; meanwhile, the internal structure is reasonable in layout, compact in structure and high in reliability; each filtering cavity is distributed in the cavity in a single layer mode, and debugging is facilitated.

Description

Multi-frequency band signal combiner

Technical Field

The utility model relates to a signal combiner, especially a multifrequency section signal combiner.

Background

On a train/high-speed rail, WIFI internet service needs to be provided for passengers, the internet service is derived from a mobile communication 4G network, the existing mode is that WIFI and 4G signals are respectively connected to equipment through 4 different signal lines, and the train/high-speed rail is difficult to wire and install, high in cost and large in occupied space. Therefore, a scheme for combining and uniformly transmitting wireless signals (WiFi and 4G) is required to be designed, so as to simplify the installation difficulty of the communication equipment and reduce the manufacturing cost.

SUMMERY OF THE UTILITY MODEL

The invention of the utility model aims to: in view of the above existing problems, a multi-band signal combiner is provided. The multi-band wireless network signals are combined into one signal and then sent out in a unified mode, and therefore the effects of simplifying wiring and installation difficulty, reducing production cost of equipment and reducing occupied space of the equipment are achieved.

The utility model adopts the technical scheme as follows:

a multi-band signal combiner comprises a cavity and a signal output port, wherein a partition plate is arranged in the cavity and divides the cavity into at least two of 3 filter cavities including a 2.4G signal filter cavity, a 4G signal filter cavity and a 5.8G signal filter cavity, one end of each filter cavity is communicated with the signal output port, and the other end of each filter cavity is communicated with a signal input port.

Furthermore, the cavity is divided into a 2.4G signal filtering cavity, a 4G signal filtering cavity and a 5.8G signal filtering cavity by the partition board; and the signal input ends of the 3 filter cavities are respectively communicated with the 2.4G signal input port, the 4G signal input port and the 5.8G signal input port.

Furthermore, the cavity is a closed cavity formed by a closed outer side wall plate and cover plates on two sides of the outer side wall plate.

Furthermore, a plurality of resonant columns are respectively arranged in the 2.4G signal filtering cavity, the 4G signal filtering cavity and the 5.8G signal filtering cavity.

Further, in 2.4G signal filtering cavity, there are 3 resonant columns designed, in 4G signal filtering cavity, there are 7 resonant columns designed, and in 5.8G signal filtering cavity, there are 5 resonant columns designed.

Furthermore, in each filter cavity, a plurality of coupling windows are arranged between every two adjacent resonance columns.

Furthermore, 4 coupling windows are arranged between every two adjacent resonance columns in each filter cavity.

Furthermore, a common resonance column is arranged at the joint of the 4G signal filtering cavity and the 5.8G signal filtering cavity.

Furthermore, the common resonance column is in capacitive coupling connection with the output end of the 4G signal filtering cavity and the output end of the 5.8G signal filtering cavity.

Furthermore, the filter cavities are arranged in the same plane.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

the utility model is provided with signal input ports corresponding to a plurality of filter cavities at the rear end of the cavity body; resonance columns are sequentially arranged in each filter cavity, a coupling window is arranged between adjacent resonance columns in each filter cavity, and a signal output port is communicated with each filter cavity; therefore, communication signals with various frequencies can be combined and uniformly sent through the signal output port, so that the installation difficulty of communication equipment during multi-network coverage can be greatly simplified, the cost of the communication equipment is reduced, and the real multi-frequency combining is realized; meanwhile, the internal structure is reasonable in layout, compact in structure and high in reliability; each filtering cavity is distributed in the cavity in a single layer mode, and debugging is facilitated.

Drawings

Fig. 1 is a block diagram of a multi-band signal combiner.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1, the present embodiment discloses a multiband signal combiner, which includes a cavity and a signal output port 8, wherein the cavity is provided with a

partition plate

12, 13, the

partition plate

12, 13 divides the cavity into a 2.4G signal filtering cavity 2, a 4G signal filtering cavity 7 and a 5.8G signal filtering cavity 9 in the same plane, a signal input end of the 2.4G signal filtering cavity 2 is communicated with a 2.4G signal input port 4, a signal input end of the 4G signal filtering cavity 7 is communicated with a 4G signal input port 5, and a signal input end of the 5.8G signal filtering cavity 9 is communicated with a 5.8G signal input port 6; the other end of each filter cavity is communicated with a signal output port 8.

In the 2.4G

signal filtering cavity

2, 3 resonant columns 10 are designed, in the 4G signal filtering cavity 7, 7 resonant columns 10 are designed, and in the 5.8G signal filtering cavity 9, 5 resonant columns 10 are designed. The cavity is formed by a closed outer side wall panel 1 and cover panels (not shown) on both sides of the outer side wall panel 1. The resonant columns 10 in each filter cavity are fixed on one side of the cover plate, and tuning screws are arranged on the other side of the cover plate and correspond to the positions of the cavities of the resonant columns 10. In each filtering cavity, 4 coupling windows 3 are sequentially arranged between every two adjacent resonant columns 10: a first coupling window, a second coupling window, a third coupling window, and a fourth coupling window.

In order to make the impedance of the output port easy to match and reduce the difficulty of assembly and debugging, a common resonance column 14 is arranged at the joint of the 4G signal filtering cavity 7 and the 5.8G signal filtering cavity 9. The common resonant column 14 is connected with the output end of the 4G signal filtering cavity 7 and the output end of the 5.8G signal filtering cavity 9 through the capacitive coupling 11.

In the scheme adopted by the embodiment, the connectors at the signal input ends at the 3 positions are connected in a space coupling mode, only two welding points are arranged at the common output port, and the number of welding points is small in the assembling process, so that the insertion loss value is small, and the intermodulation value is large.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The multi-band signal combiner is characterized by comprising a cavity and a signal output port, wherein partition plates (12 and 13) are arranged in the cavity, the partition plates (12 and 13) divide the cavity into at least two of 3 filter cavities, namely a 2.4G signal filter cavity (2), a 4G signal filter cavity (7) and a 5.8G signal filter cavity (9), one end of each filter cavity (2, 7 and 9) is communicated with the signal output port (8), and the other end of each filter cavity is communicated with a signal input port.

2. The multi-band signal combiner of claim 1, wherein the partition divides the chamber into a 2.4G signal filtering chamber (2), a 4G signal filtering chamber (7), and a 5.8G signal filtering chamber (9); the signal input ends of the 3 filter cavities (2, 7 and 9) are respectively communicated with the 2.4G signal input port (4), the 4G signal input port (5) and the 5.8G signal input port (6).

3. The multi-band signal combiner of claim 2, wherein said cavity is a closed cavity formed by a closed outer sidewall plate (1) and cover plates on both sides of the outer sidewall plate.

4. The multi-band signal combiner of claim 3, wherein a plurality of resonant columns (10) are respectively disposed in the 2.4G signal filter cavity (2), the 4G signal filter cavity (7) and the 5.8G signal filter cavity (9).

5. The multi-band signal combiner of claim 4, wherein 3 resonant columns (10) are designed in the 2.4G signal filtering cavity (2), 7 resonant columns (10) are designed in the 4G signal filtering cavity (7), and 5 resonant columns (10) are designed in the 5.8G signal filtering cavity (9).

6. The multi-band signal combiner according to claim 4 or 5, characterized in that in each filter cavity (2, 7, 9) between every two adjacent resonator columns (10) there are several coupling windows (3).

7. The multi-band signal combiner of claim 6, wherein in each filter cavity (2, 7, 9), between every two adjacent resonator columns (10), there are 4 coupling windows (3).

8. The multi-band signal combiner of one of claims 4, 5, and 7, wherein a common resonant column (14) is provided at the junction of the 4G signal filter cavity (7) and the 5.8G signal filter cavity (9).

9. The multi-band signal combiner of claim 8, wherein the common resonance column (14) is connected to the capacitive coupling (11) at both the output of the 4G signal filter cavity (7) and the output of the 5.8G signal filter cavity (9).

10. The multi-band signal combiner of claim 9, wherein the filter cavities (2, 7, 9) are arranged in the same plane.