Yagi Antennas

What are Yagi antennas?

Yagi antenna is a type of external antenna commonly used in the field of communication and broadcasting. It includes Yagi antennas and cables for WLAN, WIFI, 2.4 GHz, 3G, 4G, 5G, LoRa, GSM, and other frequency bands. Yagi antennas are widely used in TV broadcasting, communications, radar, and navigation fields to better transmit and receive signals to improve the performance and efficiency of equipment.

Structure of Yagi antennas

The basic structure of the Yagi antenna includes a set of primary and secondary reflectors and multiple elements hanging on the main reflector, where the distance between the main reflector and the secondary reflector is 1/4 of the wavelength, and the position and size of the secondary reflector are adjusted to make the electromagnetic wave interference, to achieve directional emission and reception effects.

Features of Yagi antenna

Strong directionality

Yagi antenna can change its radiation direction by adjusting the position and size of the secondary reflector to realize directional transmission and reception function, which is suitable for scenes requiring precise signal measurement and positioning.

Simple structure

The structure of the Yagi antenna is relatively simple, has low production cost, and is easy to install and maintain.

Longer transmission distance

Due to its directionality and higher gain, the Yagi antenna can transmit signals over a longer distance under the right conditions.

Why Yagi antenna is a directional antenna?

The directionality of the Yagi antenna is one of its most important features.

In the Yagi antenna, the distance between the main reflector and the sub-reflector and the size and position of the sub-reflector is used to control the radiation direction and gain.

Yagi antenna principle

In one radiation direction of the antenna, the primary and secondary reflectors provide phase shifts in the opposite phase, thus attenuating or eliminating the radiation in that direction;

In the other direction, the primary and secondary reflectors provide phase shifts that are in phase, enhancing the radiation in that direction. Therefore, the “directivity” of a Yagi antenna refers to the selection and optimization of the radiation direction.

A Yagi antenna is a directional antenna whose directivity is achieved by controlling the position and size of the secondary reflector.

Who manufactures Yagi antennas?

C&T RF Antennas Inc. manufactures many Yagi antennas for your choice. Contact us for off-the-shelf outdoor Yagi antennas or design customizations.