The role and composition of the repeater?

The repeater is mainly used in areas where the base station signal is too weak, as a relay equipment, through the repeater to amplify the base station signal, and then transmit it to farther and wider areas, expanding the network coverage; the repeater is a two-way transmission double In the industrial amplifier, one way is to receive the base station signal after being amplified and transmitted to the mobile station, and the other way is to receive the mobile station signal after being amplified and transmitted to the base station. Therefore, the repeater is mainly composed of receiver, transmitter, and antenna.

Repeater overview

Repeater (repeater) belongs to the same frequency amplifying device, which refers to a radio transmission relay device that enhances the signal in the process of wireless communication transmission. The basic function of a repeater is a radio frequency signal power booster. In the downlink, the repeater picks up the signal from the existing coverage area of the donor antenna, and isolates the signal outside the band pass through a band-pass filter. The filtered signal is amplified by the power amplifier and then transmitted to the waiting area again. Covered area. In the uplink path, the mobile phone signals of the mobile stations in the coverage area are processed by the uplink amplification link in the same working manner and then transmitted to the corresponding base station, so as to achieve the signal transmission between the base station and the mobile phone.

The repeater is a kind of relay product. The main indicators to measure the quality of the repeater are the degree of intelligence (such as remote monitoring, etc.), low IP3 (less than -36dBm without commission), low noise figure (NF), Machine reliability, good technical services, etc.

The use of repeaters as one of the necessary means to achieve the goal of "small capacity and large coverage" is mainly because the use of repeaters is to ensure network coverage without increasing the number of base stations, and the cost is much lower than that of existing ones. The same effect of the micro-cellular system. The repeater is a preferred solution to solve the extended coverage capability of the communication network. Compared with base stations, it has the advantages of simple structure, less investment and convenient installation. It can be widely used in blind and weak areas that are difficult to cover, such as shopping malls, hotels, airports, docks, stations, stadiums, entertainment halls, subways, tunnels, etc. In various places such as highways and islands, improve the quality of communication and solve problems such as dropped calls.