KR20050107715A - The method securing or realizing the specific isolation in equipment(Repeater) itself to be assembled and connected a repeater system with a donor antenna and a service antenna of RF repeater, as one body type. - Google Patents

Abstract

The present invention relates to a way for mobile operators to eliminate shaded areas in a very economical way.

In case of integrated repeater operation, it is used to eliminate radio shadow areas in buildings, underground, tunnels, etc. in the service area.

This integrated repeater system consists of PATCH (Array) antenna and repeater as an integrated system to relay the radio waves of CELL SITE and MOBILE to DOWN-LINK (base station → mobile station) and UP-LINK (mobile station → base station). It is a relay device used to solve the radio shading area such as tunnel and tunnel.

Existing RF repeater system can be operated only when Isolation (Gain + 10dB) between transmitting and receiving antennas is required, and it is installed with sufficient separation of transmitting antenna and receiving antenna to secure isolation.

This all-in-one repeater system is designed to secure the isolation in the equipment itself by manufacturing the transmitting and receiving antenna and the system in one piece.

Description

The method securing or realizing the specific isolation in equipment (Repeater) itself to be assembled and connected a repeater by assembling the donor antenna and the service antenna of the RF repeater with the repeater system. system with a donor antenna and a service antenna of RF repeater, as one body type.}

Mobile communication repeater is used to solve radio shade areas in buildings, underground, tunnels, etc. in the service area. For service providers, securing service coverage in the shadow area economically is a very important element of the business. FIG. 5 is a conventional RF type repeater design diagram, and in general, an RF type repeater has many difficulties when installed in a shaded area in a building. In addition, there are many difficulties in installing ANT in the shaded area of the building.

There are many problems in repeater facilities such as securing isolation between receiving antenna and service antenna and laying RF cable. FIG. 6 is a detailed design diagram of an integrated repeater, and in view of economics and technical aspects, it is possible to reduce a large amount of investment in facility cost, and it is difficult to secure an installation between a receiving antenna and a service antenna in a repeater facility. We solved by developing an integrated repeater. Especially in the RF repeater, it is important to secure the isolation of the equipment itself. If Isolation is not secured, the repeater will oscillate, so it is necessary to secure Isolation so that the repeater can be operated stably.

This all-in-one repeater system is designed to secure isolation from the equipment itself because the PATCH Array antenna and the repeater system are integrated, and the facility is designed to be very easy because the receiving antenna and the service antenna are embedded in the repeater itself. Therefore, service coverage can be economically secured by using an integrated repeater in the shadow area of a building, a house, etc. by using the integrated repeater. In addition, it is easy to secure service coverage when additional shadow areas occur after repeater facilities.

For mobile operators, it is very important to secure coverage economically. Therefore, in areas with low call volume, there is a need for technologies and devices that can provide good quality shaded areas at low cost.

In this respect, several technologies and devices have been developed and used to service shading products in buildings.

RF type low power repeater and In-Building distributed repeater receive signal from base station as receiving antenna and install service antenna in shadow area in building to solve shadow area. RF type low power repeater has difficulties in repeater facility such as securing isolation between receiving antenna and service antenna and laying RF cable. In addition, a lot of facility costs are being invested in repeater facilities. In-Building decentralized repeaters are expensive due to high equipment cost, construction cost and material cost.

The present invention aims to drastically improve this problem.

The present invention is to achieve the problem input and output isolation of the conventional RF type repeater. Since RF type repeaters are operated wirelessly, equipment cannot be installed and operated unless the isolation between the receiving and service antennas is secured. Improving these problems can be said to be the key to RF type repeaters.

The present invention significantly improves the isolation between the receiving antenna and the service antenna by assembling and connecting the receiving antenna and the service antenna integrally to the equipment. In addition, it is possible to save a large portion in terms of economics when installing the equipment of the present invention than when the repeater facilities and antennas in the building.

The present invention greatly improves the difficulty of securing the Isolation and the facility of the RF type relay device, which is used as a method for securing the coverage economically, compared to the conventional method.

1 and 2 illustrate an example in which the mobile communication repeater of the present invention is designed to secure isolation between two antennas by itself because a donor antenna and a service antenna are embedded. As shown in FIG. 1, a partition is mechanically formed. This is to reduce back lobs from the RF signal passing through the antenna to other antennas. The interval is composed of λ / 16, λ / 8, and λ / 4. This acts as a filter, reducing the signal going back between the antennas to ensure their own isolation. In addition, as shown in Figure 2 by configuring the height of the partition as λ / 2 acts as a filter to reduce the back signal between the antenna to ensure its own isolation.

3 is a detailed design diagram of the integrated relay device. This integrated repeater system is a relay device used to solve radio wave shading areas in buildings, underground, tunnels, etc. by relaying radio waves to DOWN-LINK (base station → mobile station) and UP-LINK (mobile station → base station) path. In the DOWN-LINK (base station → mobile station) path, there is a donor antenna that acts as a signal interface with the base station. The base station signal received by the antenna is low noise amplified through the LNA through the duplexer, and the signal is filtered through the RF SAW filter. The filtered signal is set as a proper signal through the Variable Attenuator, and amplified through the amplifier to adjust the gain in the Digital Attenuator. This signal is amplified again through an amplifier and filtered through the Band Pass Filter to only the desired band and amplified by the termination amplifier. This signal is radiated through the duplexer to the service area via the service antenna. By detecting the signal, the current output value can be displayed on the operating program, and the current waveform can be monitored using the coupler. Thermo PAD in the path compensates the output change with temperature in the circuit itself.

In the UP-LINK (mobile station → base station) path, there is a service antenna that serves as a terminal signal interface. The base station signal received by the antenna is low noise amplified through the LNA through the duplexer, and the signal is filtered through the RF SAW filter. The filtered signal is set as a proper signal through the Variable Attenuator, and amplified through the amplifier to adjust the gain in the Digital Attenuator. This signal is attenuated by 10dB to check the isolation in the isolation attenuator via the amplifier. This signal is again amplified by the amplifier and filtered through the Band Pass Filter to the desired band and amplified by the termination amplifier. This signal is radiated via a duplexer to a supporting station via a donor antenna.

Similarly, the UP-LINK (mobile station → base station) path can detect the signal and display the current output value in the operating program. The current waveform can be monitored using the coupler. Thermo PAD in the path ensures that the output changes with temperature in the circuit itself.

PATCH Array Antenna (receive antenna, service antenna) and repeater are composed as an integrated system to relay the radio waves of CELL SITE and MOBILE to DOWN-LINK (base station → mobile station) and UP-LINK (mobile station → base station). It is a relay device used to solve the radio shading area such as tunnels.

The effects obtained through the present invention are as follows.

The PATCH Array antenna (receiving antenna, service antenna) and repeater system are integrally designed to ensure isolation from the equipment itself, and the facility is designed to be very easy because the receiving antenna and service antenna are built in the repeater itself. Therefore, the service coverage can be economically secured by using an integrated repeater in a shadow area of a building, a house, etc. using the integrated repeater which is the present invention equipment. In addition, it is easy to secure service coverage when additional shade areas occur after repeater facilities.

1 is an integrated repeater Main mechanism

2 is an integrated repeater side perspective view

3 is a detailed design of the integrated repeater

4 is an integrated repeater antenna diagram

5 is a schematic diagram of an existing repeater in a building

6 is an integrated relay design in the building

* Explanation of symbols for main parts of the drawings

1) Figure 1 is an integrated repeater Main mechanism

It is an integrated main device diagram and the partition of the device serves as a filter to block the wavelength and to reduce the back lobe of the signal to secure its isolation.

2 is a side perspective view of an integrated repeater

The perspective view of the integrated repeater mechanism from the side, height (H) acts as a filter to block the wavelength, and reduces the back lobe of the signal to secure its own isolation.

3) Figure 3 is a detailed design of the integrated repeater

1: base station receiving antenna, 34,16: duplexer, 2,18: low noise amplifier (LNA), 5,21: variable attenuator 4,20: RF SAW filter, 10,28: band pass filter, 3,9,12 , 13,19,22,25,27,30,31: Amplifier, 7,23: Thermo PAD 8,24: Main Attn, 26: Isolation Check Attn, 11,29: Resistance PAD 14,32: DET, 15, 33: coupler, 10,34: Duplexer, 17: Service antenna

4 is an integrated repeater antenna diagram

Integrated repeater patch array antenna drawing, base station receive antenna and service antenna are polarized to reduce interference between frequencies to ensure isolation.

5) Figure 5 is a schematic diagram of the existing repeater in the building

In order to service the shaded area in the building, the base station signal is received by the receiving antenna, and it is separated from the repeater and connected to the equipment with the RF cable to service the shaded area with the service antenna.

6) Figure 6 is an integrated relay design in the building

In order to service the transliteration area in the building, an integrated repeater can be installed in the direction of the shadow area from the service area to service the shadow area through the service antenna.

Claims (5)

Mobile communication repeater composed of PATCH Array antenna (donor antenna, service antenna) and repeater system In the mobile communication relay device of claim 1, in order to secure the isolation when designing the device, the height of the device is calculated by calculating the wavelength of the operating frequency, and the wavelength is λ / 2, and the partition spacing of the device is λ / 16, λ / 8. , a mobile communication relay that secures its own isolation by configuring a filter to block back lobe signals by configuring λ / 4 In the mobile communication repeater of claim 1, a signal is introduced into the repeater from the donor antenna by the phase shift method, and the feedback signal to the service antenna is electrically injected feedback to the LNA front end to shift the phase by 90 degrees to secure its own isolation. Mobile communication repeater A mobile communication repeater which secures its own isolation by orthogonally polarizing the donor antenna and the service antenna in the mobile communication repeater of claim 1 A mobile communication repeater for installing a shield plate behind the donor antenna and the service antenna to reduce the back lobe in the mobile communication repeater of claim 1