In layman’s terms, this means it increases what signal is already there, but cannot create its own. Existing Donor Signal for a Cell Phone Repeater SignalĪ cell phone repeater signal adds radio frequency noise to the existing noise floor. There are other factors which will determine the strength and breadth of improved cellular coverage, but without these two, the cell phone repeater cannot function at all. Proper isolation between donor and rebroadcast antennas.There are only two factors to determine core functionality for a cell phone repeater system: What are the Requirements for a Cell Phone Repeater to Operate? Amplifiers to actually increase the power of the incoming signal.Duplexer filters to separate uplink and downlink blocks within bands.Diplexers to split the signal into multiple bands, the number and strength of which are determined by whether it’s a single, dual, or wideband amplifier,.They are generally the best choice, as they are guaranteed to work with your setup.Ī bi-directional amplifier generally contains components of its own: Finally, wideband amplifiers boost all 4G and LTE signal as well as some 5G signals in an area at a slight cost to overall power. Dual-band amplifiers focus either on two specific bands used by a carrier, or across all 3G bands (these are being phased out of production rapidly). Single-carrier amplifiers boost all bands used by a given carrier. There are several types of amplifiers, each of which function slightly differently:Įach of these are designed for a different purpose.

This is the centerpiece of every system, and what provides the increased reception you are after. The most important part of a cell phone repeater is the bi-directional amplifier. More powerful systems can have numerous donor and rebroadcast antennas depending on the need of the building they are installed in. These components have numerous arrangements based on the power of the amplifier and the desired result. These three components are installed in order to maximize coverage indoors. The rebroadcast antenna(s) then retransmit this amplified signal locally. The outdoor antenna(s) is connected via coaxial cable and connectors to a repeater (or amplifier) unit, which amplifies the signal. These can be scaled from low-power units covering the inside of a car to large active distributed antenna systems (DAS) covering large stadiums. A cell phone repeater is used to bring signal from outdoors inside a structure or vehicle, bypassing building material that harms radio frequency (RF) waves.

Only getting 3g inside office building