KR100728638B1 - Apparatus for sharing feeder cable between plural antennas and wireless device - Google Patents

Abstract

An apparatus for sharing a feeder cable between plural antennas and a wireless device is provided to reduce a feeder cable installation cost for maintaining, repairing or newly installing a wireless network by connecting the plural antennas to the wireless device via one feeder cable. An apparatus for sharing a feeder cable between plural antennas and a wireless device comprises a combination unit(110) and a distribution unit(120). The combination unit filters a frequency of signals, having the same frequency, received via plural antennas, makes a frequency conversion procedure for making the filtered signals have different frequencies, and combines the signals, whose frequencies are converted, into one signal. The distribution unit divides one signal, transmitted by the combination unit, into plural signals, performs a frequency filtering procedure of each divided signal, restores the filtered signals such that the filtered signals have original frequencies and transmits the restored signals to the wireless device.

Description

Feeder sharing device between a plurality of antennas and a wireless device {Apparatus for Sharing Feeder Cable Between Plural Antennas and Wireless Device}

1 is a view for explaining a feeder line sharing device between a plurality of antennas and a wireless device according to the present invention;

2 is a detailed configuration diagram of the coupling unit shown in FIG. 1;

3 is a detailed configuration diagram of the distribution unit illustrated in FIG. 1.

<Description of the symbols for the main parts of the drawings>

10: feeder line sharing device 20: base station

32, 34: antenna 110: coupling portion

112: first filter 114: second filter

116: frequency converter 118: channel synthesizer

120: distributor 122: channel distributor

124: first filter 126: second filter

128: frequency converter 130: feeder

The present invention relates to a feeder line sharing device, and more particularly, to a feeder line sharing device between a plurality of antennas and a wireless device for connecting a base station and a plurality of antennas in a mobile communication system to a single feeder line.

In a mobile communication system, a base station and an antenna are connected by a feeder cable, and when one base station includes a plurality of antennas, the number of feeders is required as many antennas.

For example, in a CDMA mobile communication system, a base station uses a diversity function to provide good radio quality, and thus requires two antennas. By using the diversity function, there is an advantage that the quality of service can be improved by overcoming the fading phenomenon using the signals transmitted through the multipath.

However, when a plurality of antennas are installed in a base station, a feed line is required for each antenna, which increases the base station installation cost. In fact, the average construction cost per meter of feeder line is close to 43,000 won, considering that the average feeder length per local area is about 50 meters for base stations and about 15 meters for optical repeaters. It can be seen that huge costs are required.

As such, there is a problem in that network operation costs increase because at present, each antenna is connected to a base station or a repeater using respective feed lines.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and provides a feeder line sharing device between a plurality of antennas and a wireless device capable of reducing network operation costs by connecting a plurality of antennas with a base station through one feeder line. There is a problem.

According to an embodiment of the present invention, a feeder line sharing device between a plurality of antennas and a wireless device is a feeder line sharing device for connecting a wireless device and a plurality of antennas, and received through each of the plurality of antennas. A combiner configured to filter frequencies of signals having the same frequency, and convert the filtered signals to have different frequencies, and combine the plurality of frequency-converted signals into one signal; And dividing one signal transmitted from the combiner into a plurality of signals, performing frequency filtering on each of the divided signals, and restoring the filtered signal to have an original frequency and transmitting the same to the wireless device. It includes a distribution unit.

Hereinafter, with reference to the accompanying Figures 1 to 3 will be described in detail a preferred embodiment of the present invention. Hereinafter, a description will be given of connecting a plurality of antennas connected to a base station by a single feed line, but is not limited thereto. The present invention may be applied to not only a base station but also a connection between a repeater and an antenna.

1 is a view for explaining a feeder line sharing device between a plurality of antennas and a wireless device according to the present invention.

As shown in the drawing, the feeder line sharing device 10 according to the present invention is connected between a plurality of antennas 32 and 34 and a wireless device, for example, a base station 20, and is received by the plurality of antennas 32 and 34. Combination unit 110 for combining a plurality of signals (Rx0, Rx1) having the same frequency into a single signal and the distribution unit 120 for dividing the signal output from the coupling unit 110 back into a plurality of signals The coupling part 110 and the distribution part 120 are connected by a single feed line 130.

The combiner 110 filters the frequencies of the plurality of signals having the same frequency, and then converts the signals to different frequencies, and combines the plurality of signals having different frequencies into one signal.

In addition, the distribution unit 120 divides one signal transmitted from the combiner 110 into a plurality of signals, performs frequency filtering on each of the divided signals, and then converts the frequency signal from the combiner 110. It restores to the original frequency and transmits to the wireless device such as the base station 20.

Referring to the configuration of the coupling unit 110 and the distribution unit 120 in more detail as follows.

FIG. 2 is a detailed configuration diagram of the coupling unit shown in FIG. 1. In the following description, a case where two antennas are connected to a base station through one feed line is described.

As shown in the drawing, the coupling part 110 applied to the present invention includes first and second filters 112 and 114 and first and second filters connected to the first and second antennas 32 and 34, respectively. Outputs of the frequency converter 116 and the first filter 112 and the frequency converter 116 connected to the output terminal of the second filter 114 in order to convert the frequencies of the signals output from the 112 and 114 to have different frequencies. And a channel synthesizer 118 for receiving a signal and converting the signal into a single signal.

Here, the first and second filters 112 and 114 are filters for filtering the frequencies of signals having the same frequency received through the antennas 32 and 34 to be frequencies of 801 to 899 MHz, for example. Can be configured. The frequency converter 116 converts the frequency of the signal output from the second filter 114 to be distinguished from the frequency of the signal output from the first filter 112. The frequency may be configured to convert, for example, to a frequency of 701 to 799 MHz.

Accordingly, the signal output from the channel synthesizer 118 has a frequency of 701 to 899 MHz, and the output signal of the channel synthesizer 118 is transmitted to the distribution unit 120 through the feed line 130.

3 is a detailed configuration diagram of the distribution unit illustrated in FIG. 1.

After being combined into one signal at the combiner 110, as the signal is transmitted to the divider 120 through the feed line 130, the channel divider 122 converts the combined signal into a signal having each frequency band. Divide. The first filter 124 filters the frequency of the first signal dividedly output from the channel divider 122 to have a frequency of, for example, 801 to 899 MHz, and the filtered signal is a wireless device, for example, a base station 20. Is sent).

Meanwhile, the second filter 126 filters the frequency of the second signal dividedly output from the channel divider 122 to have a frequency of, for example, 701 to 799 MHz. Thereafter, the output signal of the second filter 126 is restored to the original frequency band, for example, 801 to 899 MHz in the frequency converter 128 and then transmitted to the base station 20.

In the above description, the case of two antennas has been described as an example. However, the present invention is not limited thereto, and the present invention may be applied to a case in which three or more antennas are connected to a wireless device such as a base station. In addition, the wireless device may be a base station, a repeater, or the like.

In addition, in the above detailed description, a case of receiving signals through a plurality of antennas has been described. However, the feeder line sharing apparatus of the present invention can be applied to a case where a signal is transmitted through a plurality of paths in one wireless device. to be.

As such, those skilled in the art will appreciate that the present invention can be implemented in other specific forms without changing the technical spirit or essential features thereof. Therefore, the above-described embodiments are to be understood as illustrative in all respects and not as restrictive. The scope of the present invention is shown by the following claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

According to the present invention described above it is possible to implement a feeder for connecting a wireless device and a plurality of antennas as one, it is possible to reduce the cost of installing a feeder for the maintenance and repair of the wireless network, establishment, etc.

Claims (6)

A feeder line sharing device between a plurality of antennas and a wireless device for connecting a wireless device and a plurality of antennas, A filter for filtering frequencies of a signal having the same frequency received through each of the plurality of antennas, converting the filtered signals to have different frequencies, and combining the plurality of frequency-converted signals into one signal part; And Splitting one signal transmitted from the combiner into a plurality of signals, performing frequency filtering on each of the divided signals, restoring the filtered signal to have an original frequency, and transmitting the same to the wireless device. Allocation; Feeder line sharing device between a plurality of antennas and a wireless device comprising a. delete The method of claim 1, The coupling part includes first and second filters connected to the first and second antennas, respectively; A frequency converter connected to the output of said second filter; And A channel synthesizer for receiving the output signal of the first filter and the frequency converter and converting the signal into a single signal; Feeder line sharing device between a plurality of antennas and a wireless device comprising a. delete The method of claim 1, The divider may include: a channel divider for dividing the signal combined at the combiner into first and second signals having respective frequency bands; A first filter for filtering the frequency of the first signal dividedly output from the channel divider and transmitting the filtered signal to the wireless device; A second filter for filtering the frequency of the second signal dividedly output from the channel divider; And A frequency converter for restoring an output signal of the second filter to an original frequency band and transmitting the same to the wireless device; Feeder line sharing device between a plurality of antennas and a wireless device comprising a. The method of claim 1, And the wireless device is a mobile communication base station or a mobile communication repeater.

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