![]() ![]() The elements can be mounted on the boom on insulators. The elements are assembled on a tubular or quadrangular section, which is called boom. The spacing between the directors usually ranges from 0.1 to 0.5 of the wavelength. It helps to achieve the desired gain and the directional pattern. It has a length that is 5% shorter if compared to the driven element. The director is the shortest of parasitic elements. This point is located at the center of the driven element. The dipole (or driven element) is the feed point where feedline is attached to the transmitter or the receiver. It also depends on bandwidth, gain, and F/B ratio. The spacing of the reflector from the dipole is about 0.1 to 0.25 of the wavelength. The length is usually 5% more compared to the driven element. The reflector is placed at the rear of the dipole. The Yagi antenna is a directional antenna that typically consists of three elements: To understand this article, a minimum knowledge of antenna theory and an experience of the 4NEC2 program or similar is required. The project shown here refers to the frequency of 433.92 MHz. ![]() This type of antenna is used for transmissions and receptions of electromagnetic waves. The calculations of the parameters are made using 4NEC2 software. This article describes the phases for the construction of a Yagi antenna. ![]()
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