Eight-frequency antenna combiner

Abstract

The utility model relates to the technical field of rail transit communication, in particular to an eight-frequency antenna combiner which comprises a combiner shell, one side of the combiner shell is fixedly connected with a front panel, eight IN ports are installed on the front panel, the eight IN ports are arranged in a linear array mode, six OUT ports are installed on the front panel, and the eight OUT ports are arranged in a linear array mode. The six OUT ports are arranged at the same horizontal height, the OUT ports are arranged above the IN port, the eight LTE bridges are installed inside the combiner shell, the LTE bridges are connected with the OUT ports and the IN port, the number of the interfaces of the combiner provided by the utility model is increased to eight-six from four-thirds in the prior art, more devices can be connected, and meanwhile, the number of the interfaces of the combiner is increased to eight-six. The combiner also has the characteristics of small volume, excellent index, low cost and the like, adopts a chip type passive device inside, is matched with an aluminum shell, has the advantages of good shielding property and high reliability, reduces the space occupation of the combiner, and can meet the use requirements of more and more train equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transportation communications, in particular to an eight-frequency antenna combiner. Background Art

[0002] In the field of rail transit communications, subways use the LTE-M system to provide integrated train-to-ground wireless communication for drivers, dispatchers, and ground staff. With technological advancements and increasing service demands, subway trains are increasingly equipped with more and more equipment, and the connections between these devices are becoming increasingly complex. This device is designed to solve the problem of interoperability between these multiple devices.

[0003] More and more equipment is installed on trains, but the overall installation space remains unchanged. It is obviously unreasonable and difficult to renovate and redesign the trains.

[0004] In the prior art (such as Figure 4 ), the antenna combiner is divided into three and four parts, and only one of the roof fin antenna, bottom flat antenna, antenna combiner, train access unit (TAU for short) and dispatching vehicle-mounted station can be connected.

[0005] With the increase in business and the increase in equipment redundancy requirements, for example, if there are two antennas, two TAUs, and two dispatching vehicle-mounted stations, two antenna combiners are required. When installing two antenna combiners, the device size is larger than 2U. When installed inside the cabinet, the devices also need to be separated by a distance of 2U for heat dissipation. Therefore, in order to meet the communication needs of two antennas, two TAUs, and two dispatching vehicle-mounted stations, the existing technology requires at least 6U, which takes up a lot of space and cannot meet the usage needs of the increasing number of train equipment. Utility Model Content

[0006] The purpose of the present utility model is to provide an eight-frequency antenna combiner to solve the problems raised in the above background technology.

[0007] The purpose of the utility model can be achieved through the following technical solutions:

[0008] An eight-band antenna combiner includes a combiner housing, one side of which is fixedly connected to a front panel, eight IN ports are mounted on the front panel, and the eight IN ports are arranged in a linear array. The front panel is also provided with six OUT ports, all of which are arranged at the same horizontal height, and the OUT ports are arranged above the IN ports.

[0009] Eight LTE bridges are installed inside the combiner housing, and the LTE bridges are connected to the OUT port and the IN port.

[0010] The OUT port is used to connect to the external roof fin antenna and the bottom flat antenna through a radio frequency cable, and the IN port is used to connect to the external TAU and dispatching vehicle-mounted station through a radio frequency cable to realize the transmission of radio frequency signals.

[0011] Two handles are fixedly connected to the front panel and are symmetrically arranged.

[0012] A top cover is provided on the top of the combiner housing. A plurality of fixing holes are evenly provided on the top cover. The fixing holes are used to assist in fixing the top cover to the combiner housing.

[0013] Two LTE bridges are connected to SMA loads.

[0014] The six OUT ports are OUT1, OUT2, OUT3, OUT4, OUT5 and OUT6, respectively, wherein OUT1 and OUT2 are connected to the same LTE bridge through RF cables, OUT4 and OUT5 are connected to the same LTE bridge through RF cables, and OUT3 and OUT6 are respectively connected to the same LTE bridge with two SMA loads through RF cables.

[0015] The IN ports include IN1, IN2, IN3, IN4, IN5, IN6, IN7, IN7, where IN1 and IN2 are connected to the same LTE bridge via RF cables, IN3 and IN4 are connected to the same LTE bridge via RF cables, IN5 and IN6 are connected to the same LTE bridge via RF cables, and IN7 and IN8 are connected to the same LTE bridge via RF cables.

[0016] Beneficial effects of the utility model:

[0017] The number of combiner interfaces proposed in the present invention is increased from the current 3:4 to 6:8. While being able to connect more devices, it also has the characteristics of small size, excellent indicators, and low cost. The internal use of chip-type passive components, combined with an aluminum casing, has the advantages of good shielding and high reliability, reduces the space occupied by the combiner, and can meet the use needs of more and more train equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, it is possible for a person skilled in the art to derive other drawings based on these drawings without inventive effort.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the connection between the antenna combiner and external equipment proposed in the present invention;

[0021] Figure 3 This is a schematic diagram of the antenna combiner proposed in the present utility model;

[0022] Figure 4 This is a connection diagram of an antenna combiner and external equipment in the prior art.

[0023] The reference numerals in the figures are as follows:

[0024] 100, combiner housing, 200, top cover, 201, fixing holes, 300, front panel, 301, handle, 302, IN port, 303, OUT port. DETAILED DESCRIPTION

[0025] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] An eight-band antenna combiner includes a combiner housing 100 , one side of which is fixedly connected to a front panel 300 , on which eight IN ports 302 are mounted, and the eight IN ports 302 are arranged in a linear array.

[0027] Six OUT ports 303 are installed on the front panel 300 . The six OUT ports 303 are all arranged at the same level. The OUT ports 303 are arranged above the IN port 302 .

[0028] Eight LTE bridges are installed inside the combiner housing 100 , and the LTE bridges are connected to the OUT port 303 and the IN port 302 .

[0029] The OUT port 303 is used to connect to an external roof fin antenna and a bottom flat antenna via a radio frequency cable.

[0030] The IN port 302 is used to connect to an external TAU or dispatch vehicle-mounted station via a radio frequency cable to achieve transmission of radio frequency signals.

[0031] In the LTE-M system, the equipment that needs to be installed in the train mainly includes roof fin antennas, bottom flat-panel antennas, antenna combiners, train access units (TAUs), and dispatching vehicle-mounted stations.

[0032] The roof fin antenna is installed on the roof of the train and has only one antenna interface;

[0033] The flat panel antenna is installed on the bottom of the train and has two antenna interfaces;

[0034] TAU: used for access of integrated vehicle-ground wireless services and has two antenna interfaces;

[0035] The dispatch vehicle-mounted station is used for drivers to make calls and has two antenna interfaces.

[0036] like Figure 4 As shown, in the prior art, the antenna combiner is divided into three parts and four parts, and the roof fin antenna, the bottom flat antenna, the antenna combiner, and the train access unit (TAU) can only be connected to one dispatching vehicle station.

[0037] like Figure 2 and Figure 3 The antenna combiner of this application has 8 input ports and 6 output ports. The 8 input ports are connected to the antenna interfaces of the TAU and the dispatching vehicle-mounted station respectively, and the 6 output ports are connected to the roof fin antenna and the bottom flat antenna respectively.

[0038] Two handles 301 are fixedly connected to the front panel 300 , and the two handles 301 are symmetrically arranged.

[0039] The technical specifications of the antenna combiner in this application are as follows:

[0040]

[0041] In this application, the LTE bridge uses chip-type passive components, which have the characteristics of small size, high performance, and low cost. The main indicators of the LTE bridge are as follows:

[0042]

[0043] A top cover 200 is provided on the top of the combiner housing 100 . A plurality of fixing holes 201 are evenly arranged on the top cover 200 . The fixing holes 201 are used to assist in fixing the top cover 200 to the combiner housing 100 .

[0044] like Figure 1 The top cover 200 can be fixed to the combiner housing 100 by using bolts to pass through the fixing holes 201 and threadedly connect to the combiner housing 100. The combiner housing 100 is a 2U chassis made of aluminum.

[0045] Two LTE bridges are connected to SMA loads.

[0046] The six OUT ports 303 are OUT1, OUT2, OUT3, OUT4, OUT5 and OUT6, respectively, wherein OUT1 and OUT2 are connected to the same LTE bridge via RF cables, OUT4 and OUT5 are connected to the same LTE bridge via RF cables, and OUT3 and OUT6 are respectively connected to the same LTE bridge with two SMA loads via RF cables.

[0047] The IN port 302 includes IN1, IN2, IN3, IN4, IN5, IN6, IN7, IN7, where IN1 and IN2 are connected to the same LTE bridge through an RF cable, IN3 and IN4 are connected to the same LTE bridge through an RF cable, IN5 and IN6 are connected to the same LTE bridge through an RF cable, and IN7 and IN8 are connected to the same LTE bridge through an RF cable.

[0048] like Figure 2 and Figure 3 The antenna combiner is mainly composed of an LTE bridge, a load, and a RF cable. The IN1, IN2, IN3, and IN4 interfaces and the OUT1, OUT2, and OUT3 interfaces form a three-way four-way combiner. The IN5, IN6, IN7, and IN8 interfaces and the OUT4, OUT5, and OUT6 form a three-way four-way combiner. Two combiners form a complete six-way eight-way combiner. Two groups of three-way four-way combiners are connected to the main set, diversity set, and antenna of the TAU and the dispatching console respectively.

[0049] In the first set of three-way and four-way combiners, the link characteristics from IN1 to OUT1, OUT2, and OUT3 are the same. Similarly, the link characteristics from IN2, IN3, and IN4 to OUT1, OUT2, and OUT3 are also the same. The principles of the second set of three-way and four-way combiners are exactly the same as those of the first set.

[0050] Compared with related technologies, the eight-frequency antenna combiner provided by the present invention has the following beneficial effects:

[0051] The number of combiner interfaces proposed in the present invention is increased from the current 3:4 to 6:8. While being able to connect more devices, it also has the characteristics of small size, excellent indicators, and low cost. The internal use of chip-type passive components, combined with an aluminum casing, has the advantages of good shielding and high reliability, reduces the space occupied by the combiner, and can meet the use needs of more and more train equipment.

[0052] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. An eight-band antenna combiner, comprising a combiner housing (100), characterized in that: A front panel (300) is fixedly connected to one side of the combiner housing (100), and eight IN ports (302) are installed on the front panel (300), and the eight IN ports (302) are arranged in a linear array. Six OUT ports (303) are installed on the front panel (300), and the six OUT ports (303) are all arranged at the same horizontal height, and the OUT ports (303) are arranged above the IN ports (302); Eight LTE bridges are installed inside the combiner housing (100), and the LTE bridges are connected to the OUT port (303) and the IN port (302); The OUT port (303) is used to connect to an external roof fin antenna and a bottom flat antenna via a radio frequency cable, and the IN port (302) is used to connect to an external TAU and a dispatching vehicle-mounted station via a radio frequency cable, so as to realize the transmission of radio frequency signals.

2. The eight-frequency antenna combiner according to claim 1, characterized in that: Two handles (301) are fixedly connected to the front panel (300), and the two handles (301) are symmetrically arranged.

3. The eight-frequency antenna combiner according to claim 1, characterized in that: A top cover (200) is provided on the top of the combiner housing (100), and a plurality of fixing holes (201) are evenly arranged on the top cover (200). The fixing holes (201) are used to assist in fixing the top cover (200) to the combiner housing (100).

4. The eight-frequency antenna combiner according to claim 1, characterized in that: Two LTE bridges are connected to SMA loads.

5. The eight-frequency antenna combiner according to claim 2, characterized in that: The six OUT ports (303) are OUT1, OUT2, OUT3, OUT4, OUT5 and OUT6, respectively, wherein OUT1 and OUT2 are connected to the same LTE bridge via a radio frequency cable, OUT4 and OUT5 are connected to the same LTE bridge via a radio frequency cable, and OUT3 and OUT6 are respectively connected to the same LTE bridge with two SMA loads via radio frequency cables.

6. The eight-frequency antenna combiner according to claim 1, characterized in that: The IN port (302) includes IN1, IN2, IN3, IN4, IN5, IN6, IN7 and IN8, wherein IN1 and IN2 are connected to the same LTE bridge via a radio frequency cable, IN3 and IN4 are connected to the same LTE bridge via a radio frequency cable, IN5 and IN6 are connected to the same LTE bridge via a radio frequency cable, and IN7 and IN8 are connected to the same LTE bridge via a radio frequency cable.

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