Yagi Array Antenna Design

A well designed yagi antenna as per the design given below can cover a line of site distance of even 5 kms with just 1 watt rf power.

Yagi array antenna design. The design of a yagi uda antenna is actually quite simple. Viezbicke yagi antenna design nbs technical note 688 u s. If the specifications given above are followed one can design an yagi uda antenna. It has the best gain for its sizes and a correspondingly narrow main lobe beam.

The length is usually 5 more compare to driven element. Look up a table of design parameters for yagi uda antennas. It is placed at rear of dipole or driven element. The yagi antenna is a narrow band antenna designed to work only on fm channel.

Typical yagi uda antenna configuration. Build the yagi or model it numerically and tweak it till the performance is acceptable. Yagi uda antenna showing element types. Because yagi antennas have been extensively analyzed and experimentally tested the process basically follows this outline.

The minor lobes are suppressed and the directivity of the major lobe is increased by the addition of directors to the antenna. Yagi calculator is a free antenna design and analysis software for windows. Department of commerce national bureau of standards december 1976. It is normally a half wave dipole or often a folded dipole.

The gain of yagi antenna depends on length of antenna array and do not depend on number of directors used in the design. Yagi uda antenna design procedure boom reflector directors driven element s ij i j n d d 1 2 3 l i figure 1 yagi uda antenna layout notes. Yagi uda antennas consist of a single driven element connected to the transmitter or receiver with a transmission line and additional parasitic elements which are not connected to the transmitter or receiver. In this menu you need to submit values of multiple.

The yagi uda is center fed and the feed point coincides with the origin. The driven element is the yagi antenna element to which power is applied. A yagi uda antenna commonly known as a yagi antenna is a directional antenna consisting of multiple parallel elements in a line usually half wave dipoles made of metal rods. Using this software you can design and build your own yagi antenna this software can not only be used to design but also to find out antenna gain stacking distance and standing wave ratio swr.

To design the antenna you need to go to task design yagi menu. Design procedure based on. In place of a folded dipole you can also use a planar dipole as an exciter. The directional pattern of the yagi uda antenna is highly directive as shown in the figure given below.