A Brief Guide To Unidirectional Antenna

A man using a cell booster antenna to use his phone.

The outside antenna is one of the four major components of a signal booster system.  It helps to capture the existing outside cell signals and transfer it to the amplifier unit. There are two types of outside antennas used in a signal booster system, they are the omnidirectional antenna and unidirectional antenna. 

The selection of the antenna mainly depends on the distance from the cell tower. If you are surrounded by cell towers, an omnidirectional antenna can be used. A unidirectional antenna can be used when you live far away from the cell tower.

Below, we will discuss the two types of unidirectional antennas.

Yagi Antennas

This is the most common type of unidirectional antennas used for a cell phone repeater system. Yagi antennas are much more advanced than the omnidirectional antennas as they are more effective in pulling cell signals from a long distance. Yagi antennas can capture cell signals in a 45 to 90-degree field.

Since the yagi antennas have a narrow field of concentration, it allows them to reach out farther to capture cell signals for the amplifier unit to boost. They also give the cell signals a high gain. Yagi antennas are 3 times more powerful in comparison with the omnidirectional antennas.

Yagi antennas are mainly used in rural areas where there are not enough cell towers to provide proper cellular connection. They can boost any type of cell signals, including 5G, 5G E, 4G LTE, and 3G. One drawback of the yagi antenna is that you can only boost cell signals of one or two carriers at a time.

Log-Periodic Antenna

This is the most advanced and powerful unidirectional antennas available in the market right now. You can see log-periodic antennas with satellite television service. They can capture cell signals from extremely long distances and are also very directional. These antennas are about 30 times more powerful when compared to omnidirectional antennas.

Parabolic sheets are usually used with log-periodic antennas for capturing the cell signals better and increasing the gain. Log-periodic antennas can pull in a variety of cell signals, including 5G, 4G LTE, 3G, Wi-Fi, WiMAX, etc. This antenna is the ideal choice for boosting cell reception in extremely remote areas.

Log-periodic antennas can reach up to a distance of 10 miles to capture the cell signals. It is also beneficial in busy urban areas because its directional field helps to reduce the noise. However, the log-periodic antenna’s 5 to 15-degree directional field makes it difficult to install. They are also more expensive than omnidirectional and yagi antennas.