An adaptive transparent multi-system combining platform

Abstract

This invention discloses an adaptive pass-through multi-system combining platform, comprising at least two high-frequency input terminals, at least two low-frequency input terminals, a bridge, and two output terminals. The low-frequency signal is combined with a portion of the high-frequency input terminals to form a first common combiner terminal, and the low-frequency signal is combined with the remaining high-frequency input terminals to form a second common combiner terminal. The first and second common combiner terminals are respectively connected to the two input terminals of the bridge, and the two output terminals are respectively connected to the two output terminals of the bridge. This invention, while providing multi-system combining functionality, also features adaptive pass-through functionality, enabling pass-through without additional operation. This is beneficial for use in complex environments, simplifies the operation process, and greatly facilitates both suppliers and consumers.

Description

Technical Field

[0001] This invention relates to the field of microwave radio frequency communication technology, and in particular to an adaptive transparent transmission type multi-system combining platform. Background Technology

[0002] Currently, mobile communication systems comprise various systems, established and operated by different operators. These systems are interoperable, but in certain situations, simultaneous coverage by multiple systems is required. Multi-system combining platforms are devices that integrate these multiple communication systems. They are primarily used for signal coverage in subways, high-speed rail, and large stadiums. With the widespread adoption of 5G communication, China will experience a boom in 5G construction, with operators increasing their investment. Simultaneously, the construction of more and more high-speed rail and subway lines in China necessitates communication coverage projects that include different operators' 5G systems while also being compatible with their 2G, 3G, and 4G communication systems.

[0003] However, existing multi-system combining platforms typically only have the function of multi-system combining or only the function of low-frequency pass-through, lacking the function of both low-system frequency band combining and low-system frequency band pass-through, or requiring specific internal operations to achieve pass-through, thus causing many inconveniences in use. Summary of the Invention

[0004] This invention provides an adaptive transparent transmission multi-system combining platform, which has the advantage of having both multi-system combining function and adaptive transparent transmission function. The transparent transmission function can be realized without additional operation, which is beneficial for use in complex environments, simplifies the operation process, and greatly facilitates supply and demand parties.

[0005] The above-mentioned objective of the present invention is achieved through the following technical solution: an adaptive transparent transmission type multi-system combining platform, characterized in that it includes at least two high-frequency input terminals, at least two low-frequency input terminals, a bridge, and two output terminals. The low-frequency signal is combined with a portion of the high-frequency input terminals to form a first common combining terminal, and the low-frequency signal is combined with the remaining high-frequency input terminals to form a second common combining terminal. The first common combining terminal and the second common combining terminal are respectively connected to the two input terminals of the bridge, and the two output terminals are respectively connected to the two output terminals of the bridge.

[0006] The present invention is further configured such that the frequency range of the high-frequency input terminal is 1710-3700MHz, covering the frequency bands of 2G, 3G, 4G and 5G systems for mobile communication.

[0007] The present invention is further configured such that the low-frequency input terminal has three parts, which are respectively used to access the FDD700, CDMA800 and GSM900 low-frequency band systems.

[0008] The invention is further configured to include a matching terminal corresponding to each low-frequency input terminal, the matching terminal being connected to a matching stripline in an open-circuit state, and the matching terminal and the corresponding low-frequency input terminal being a system with the same frequency.

[0009] The present invention is further configured such that the first common combining terminal and the second common combining terminal are respectively connected to the two input terminals of the bridge via the first transmission line and the second transmission line.

[0010] The invention is further configured to include an integrated cavity with two sides, the two high-frequency input terminals, the low-frequency input terminal and the output terminal are all installed on the side of the integrated cavity, the bridge, the first transmission line, the second transmission line and the matching strip line are all installed in the integrated cavity, the first transmission line, the second transmission line and the matching strip line are fixed by insulators, and end caps are provided on both sides of the integrated cavity.

[0011] In summary, the beneficial effects of the present invention are as follows:

[0012] 1. This invention can integrate 2G, 3G, 4G and 5G system signals from different operators and combine them to the antenna feeder to achieve ultra-wideband signal coverage and full network coverage; at the same time, after the low-frequency signal of this invention is connected, one of the two low-frequency signals of the same frequency is used as the input end, and the other is connected to the matching stripline in the open circuit state as the matching end; the product can realize the adaptive transparent transmission function of this frequency band without internal operation.

[0013] 2. The present invention has high integration and strong versatility, which facilitates production, installation and debugging, and is conducive to the development of the combined platform towards compatibility, comprehensiveness, miniaturization and intensification. Attached Figure Description

[0014] Figure 1 This is a front and back view of the cavity of an adaptive transparent transmission type multi-system combining platform according to the present invention, without the cover.

[0015] Among them, serial number 1 is the input terminal of the FDD700 broadcasting equipment, with a working frequency band of 703-748 & 758-803MHz;

[0016] Serial number 2 is the CDMA800 input terminal, with an operating frequency band of 820-835 & 865-880MHz;

[0017] Serial number 3 is the input terminal for China Mobile / China Unicom GSM900, with an operating frequency band of 889-915 & 934-960MHz;

[0018] Serial number 4 is the input terminal of the mobile DCS1800, with an operating frequency band of 1710-1735 & 1805-1830MHz;

[0019] Serial number 5 is the mobile TD-SCDMA (F&A) input terminal, with an operating frequency band of 1885-1915 & 2010-2025MHz;

[0020] Serial number 6 is the China Mobile TD-LTE(E) input terminal, with an operating frequency band of 2300-2400MHz;

[0021] Serial number 7 is the China Unicom / China Telecom FDD LTE 1.8G input terminal, with an operating frequency band of 1735-1785 & 1830-1880MHz;

[0022] Serial number 8 is the China Telecom / China Unicom FDD LTE 2.1G input terminal, with an operating frequency band of 1920-1980 & 2110-2170MHz;

[0023] Serial number 9 is the China Mobile TD-LTE / NR 2.6G input terminal, with an operating frequency band of 2515-2675MHz;

[0024] Serial number 10 is the China Telecom / China Unicom NR 3.5G input terminal, with an operating frequency band of 3300-3700MHz;

[0025] Numbers 11 and 12 are the two output terminals ANT1 and ANT2, respectively;

[0026] Serial number 13 is the first transmission line;

[0027] Serial number 14 is the second transmission belt line, where serial number 14_2 is the extension belt line after the second transmission belt line passes through the back of the cavity;

[0028] Serial number 15 is an insulator;

[0029] Number 16 is a bridge circuit;

[0030] Serial number 17 is the matching terminal of the FDD700 cable TV line, which connects to a customized matching stripline of a certain length in an open circuit state;

[0031] Serial number 18 is the CDMA800 channel matching terminal, which connects to a customized matching stripline of a certain length in an open circuit state;

[0032] Serial number 19 is the matching terminal of the China Mobile / China Unicom GSM900 channel, which connects to a customized matching stripline of a certain length in an open circuit state. Detailed Implementation

[0033] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0034] Example: Reference Figure 1An adaptive transparent transmission type multi-system combining platform has an integrated cavity with two sides. Both sides of the integrated cavity are provided with end caps, which include 7 high-frequency input terminals, 3 low-frequency input terminals, a bridge and two output terminals. The two high-frequency input terminals, the low-frequency input terminals and the output terminals are all installed on the side of the integrated cavity.

[0035] This invention encompasses 10 system operating frequency bands: China Mobile GSM900, China Mobile DCS1800, China Mobile TD-SCDMA (F&A), China Mobile TD LTE (E), China Mobile TD LTE / NR2.6G, China Telecom CDMA800, China Telecom / China Unicom LTD FDD2.1G, China Telecom / China Unicom NR 3.5G, China Unicom / China Telecom LTD FDD1.8G, and China Broadcasting FDD 700. In the design of the three channels for China Broadcasting FDD 700, China Telecom CDMA800, and China Mobile GSM900, one of the two low-frequency paths on the same frequency serves as the input, and the other is connected to a matching stripline of a certain length in an open-circuit state as the matching end. The product can achieve adaptive transparent transmission function for this frequency band without additional operation, thus simultaneously satisfying both ordinary and transparent transmission functions.

[0036] The adaptive transparent transmission multi-system combining platform of the present invention is divided into a high-frequency band multi-system combining section, a low-frequency band adaptive transparent transmission section, and a 3dB bridge; the low-frequency band adaptive transparent transmission frequency band includes FDD700, CDMA800, and GSM900 systems; the high-frequency band multi-system combining frequency range is 1710-3700MHz, covering the frequency bands of 2G, 3G, 4G, and 5G mobile communication systems.

[0037] The high-frequency multi-system combining section and the low-frequency adaptive pass-through section are distributed on the front and back of the integrated cavity. One part of the high-frequency combining system and three low-frequency systems are located on the front of the integrated cavity, and another part of the high-frequency combining system and three other low-frequency systems are located on the back of the integrated cavity. The three low-frequency systems on the front of the integrated cavity and the three low-frequency systems on the back of the cavity correspond to their respective co-frequency systems. One of the two co-frequency paths serves as the input end, and the other is connected to a matching stripline of a certain length as the matching end, including FDD700, CDMA800, and GSM900 systems.

[0038] On the reverse side of the cavity, serial number 1 is the input terminal for the broadcast FDD700 system, operating at frequencies of 703-748 & 758-803MHz; serial number 18 is the matching terminal for the CDMA800 channel, connected to a customized matching stripline of a certain length; serial number 19 is the matching terminal for the GSM900 channel of the mobile / Unicom network, connected to a customized matching stripline of a certain length; serial numbers 18 and 19 are fixed vertically with insulators; serial number 4 is the input terminal for the mobile DCS1800 system, operating at frequencies of 1710-1735 & 1805-1830MHz; serial number 5 is the input terminal for the mobile TD-SCDMA (F&A) system. The operating frequency band is 1885-1915 & 2010-2025MHz; Serial number 6 is the input terminal for China Mobile's TD-LTE(E), with an operating frequency band of 2300-2400MHz; among them, the three high-frequency band systems of China Mobile's DCS1800, China Mobile's TD-SCDMA(F&A), and China Mobile's TD-LTE(E) are combined with the three low-frequency band systems of China Broadcasting Network's FDD700, China Telecom's CDMA800, and China Mobile / China Unicom's GSM900 to form the first common combining terminal, which is led out by the first transmission line (Serial number 14), passes through the front of the cavity, and is connected to one input terminal of the bridge via the extension line (Serial number 14_2). The transmission line is fixed by multiple insulators (Serial number 15). It should be noted that the CDMA800 system of China Telecom and the GSM900 system of China Mobile / China Unicom are the matching paths here. The input ends are both customized matching striplines of a certain length. At the combining end, it is only necessary to debug the corresponding working passband VSWR. During the whole-machine debugging, it is matched with the corresponding frequency band on its front side.

[0039] On the front of the cavity, serial number 2 is the CDMA800 input terminal for China Telecom, operating in the 820-835 & 865-880MHz frequency band; serial number 3 is the GSM900 input terminal for China Mobile / China Unicom, operating in the 889-915 & 934-960MHz frequency band; serial number 17 is the FDD700 channel matching terminal for China Broadcasting Network, connecting to a customized matching stripline of a certain length, with the stripline fixed at the top and bottom by insulators; serial number 7 is the China Unicom / China Telecom FDD... The LTE 1.8G input terminal operates in the 1735-1785 & 1830-1880MHz frequency band; number 8 is the China Telecom / China Unicom FDD LTE 2.1G input terminal, operating in the 1920-1980 & 2110-2170MHz frequency band; number 9 is the China Mobile TD-LTE / NR 2.6G input terminal, operating in the 2515-2675MHz frequency band; number 10 is the China Telecom / China Unicom NR 3.5G input terminal, operating in the 3300-3700MHz frequency band. Among them, the three low-frequency band systems of China Telecom CDMA800, China Mobile / China Unicom GSM900 and China Broadcasting Network FDD700 and the four high-frequency band systems of China Unicom / China Telecom FDD LTE 1.8G, China Telecom / China Unicom FDD LTE 2.1G, China Mobile TD-LTE / NR 2.6G and China Telecom / China Unicom NR 3.5G are combined to form the second common terminal, which is connected to the other input terminal of the bridge by the second transmission line. The transmission strip is fixed by multiple insulators (serial number 15). It should be noted that this is a matching path for the broadcast FDD700 system; the input end is a custom-made matching stripline of a certain length. At the combining end, only the operating passband VSWR needs to be adjusted. During overall system debugging, it is matched to the corresponding frequency band on the opposite side. For example... Figure 1 As shown, on the front of the cavity, the circuit enters the bridge after being combined at the same frequency via two transmission lines. After being combined by the bridge, it is split into two outputs, forming two combined output terminals. Serial number 16 is the bridge transmission line; serial numbers 11 and 12 are the two output terminals ANT1 and ANT2, respectively.

[0040] When any one, two, or three of the three low-frequency band system signals (FDD700 for broadcasting, CDMA800 for telecommunications, and GSM900 for mobile / Unicom) are connected to the input terminal, the entire system functions as a standard multi-system combining platform, enabling normal signal input and output transmission functions just like other high-frequency band systems. When no one, two, or three of the three low-frequency band systems (FDD700, CDMA800, and GSM900) are connected to the input terminal, both output terminals of the multi-system combining platform can achieve signal pass-through function for the unconnected low-frequency systems, thus achieving adaptive pass-through of the three low-frequency signals.

[0041] The above description is only a preferred embodiment of the present invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the inventive concept of the present invention, and these all fall within the protection scope of the present invention.

Claims

1. An adaptive transparent transmission type multi-system combining platform, characterized in that, It includes at least two high-frequency input terminals, at least two low-frequency input terminals, a bridge, and two output terminals. The low-frequency signal is combined with a portion of the high-frequency input terminals to form a first common combiner terminal, and the low-frequency signal is combined with the remaining high-frequency input terminals to form a second common combiner terminal. The first common combiner terminal and the second common combiner terminal are respectively connected to the two input terminals of the bridge, and the two output terminals are respectively connected to the two output terminals of the bridge. It also includes matching terminals that correspond one-to-one with the low-frequency input terminals. The matching terminals are connected to matching striplines in an open-circuit state, and the matching terminals and their corresponding low-frequency input terminals are a system with the same frequency.

2. The adaptive transparent transmission type multi-system combining platform according to claim 1, characterized in that, The frequency range of the high-frequency input terminal is 1710-3700MHz, covering the frequency bands of 2G, 3G, 4G and 5G mobile communication systems.

3. The adaptive transparent transmission type multi-system combining platform according to claim 2, characterized in that, The low-frequency input terminal has three parts, which are used to connect to the FDD700, CDMA800 and GSM900 low-frequency band systems respectively.

4. The adaptive transparent transmission type multi-system combining platform according to claim 1, characterized in that, The first common combiner terminal and the second common combiner terminal are respectively connected to the two input terminals of the bridge via the first transmission line and the second transmission line.

5. The adaptive transparent transmission type multi-system combining platform according to claim 4, characterized in that, It also includes an integrated cavity with two sides. The high-frequency input terminal, low-frequency input terminal and output terminal are all installed on the side of the integrated cavity. The bridge, the first transmission line, the second transmission line and the matching strip line are all installed in the integrated cavity. The first transmission line, the second transmission line and the matching strip line are fixed by insulators. Both sides of the integrated cavity are provided with end caps.

Images