How do you build a Yagi antenna?

Answer

The yagi antenna is a popular antenna which is used in most homes with receptive appliances such as TV. The yagi antennas use a large number of dipole elements to receive a wide range of signals. The yagi antenna is capable of stopping signal interference thus promoting signal reception.
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Ask.com Answer for: how does a yagi antenna work
How Does a Yagi Antenna Work?
A Yagi antenna is a type of directional antenna. They were very common over the past half century to receive over-the-air transmission signals, particularly radio and television. Yagi antennas are quite complex and are still being used today in areas... More »
Difficulty: Easy
Source: www.ehow.com
A yagi antenna (named after one of the inventors) works by sending a beam in one direction rather than a 360 degree circle. This allows much higher 'gain' (decibels (dB)) achievement.
A Yagi-Uda antenna works by focusing in one direction only to obtain the best signal frequency. The antenna consists of dipoles, reflectors, and directors. The dipoles on the antenna operate on this single plane which increases the bands of signals it can pick up.
A Yagi antenna works by using over air transmission signals to power radio and televisions. A Yagi antenna must be positioned in the correct spot to be able to receive a signal.
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