Components Of A Cellular Signal Booster

Cell Phone Signal Booster
Cell Phone Signal Booster
Cellular Signal Booster
Cell Signal Facts

Cellular signal booster is a simple device that is used to increase the strength of cellular signals that our cell phones receive from the transmitting tower. Boosting becomes necessary when multiple obstructions in the path of cellular signals distorts them and reduce their strengths.

Cellular signal boosters have a simple working mechanism owing to the minimal number of components. Here we give detailed information about the components of a signal booster.

External Antenna

It is the initial component of cell phone signal booster and the whole process of signal boosting starts here. External antenna receives the signals transmitted from the tower and the antenna is usually mounted on heights like rooftops.

It captures the outside signals that will without doubt, be attenuated due to obstructions on the way, and sends them to the amplifying unit. Two types of external antenna are:

Omni-Directional Antenna

The antenna pulls signals from a 360-degree angle and the property makes it a suitable antenna choice for people who get decent signals or want to boost multiple carriers.

Uni-Directional Antenna (Yagi Antenna)

The antenna has a triangle shape and it pulls in cellular signals within a 45 degree field of vision that enables it to reach longer distances than that possible with omni-directional antennas. This is especially suited for places that receive very poor signals and it usually boosts a single carrier.


The amplifier performs the major signal boosting functions and the choice of an amplifier will depend on the quality of the external signal. The output signal strength of the amplifier is measured in decibels and its power is measured in decibel milliwatts (dBm).

Most of the home amplifiers have 500 to 7000 square feet range. Signal levels of cell phone fall in the     -50 to -120 dB range and on moving from -50 to -120, the signal strength drops visibly. Signal boosting indicates the boosting of dB value of the cellular signal and a good home amplifier should have a dB gain that is not less than +60.

Inside Antenna

The third and final major component in a cell phone booster is the inside antenna that is placed indoors to broadcast the boosted signal to the reception end, that is our cell phone. Internal antennas are connected to the amplifier via a cable and the antennas usually come in two varieties.

Panel Antenna

They are usually mounted on the walls and the strongest signals are broadcasted to areas that lie very close to it.

Dome Antenna

They are usually mounted on the ceilings and distribute boosted signals equally.

The simple working mechanism and ease of installation reduces the associated costs of cellular signal boosters making it an affordable option for many who are constantly troubled by network issues.