A Yagi–Uda antenna (commonly just “Yagi”) is a directional RF antenna that focuses energy in one direction to increase range and signal strength. It consists of a driven element (the part connected to the transmitter/receiver) and several parasitic elements (reflectors and directors) that shape the radiation pattern.Driven Element: The active dipole that connects to your coaxial feedline.
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Reflector: A slightly longer element behind the driven element to reflect energy forward.
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Directors: Shorter elements in front to direct the signal, increasing gain.
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Boom: A support structure that holds all elements in place.
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Balun & Feed: Transitions the balanced antenna to unbalanced coax (e.g., N-female). Yagi antennas are valued for high gain, narrow beamwidth, and strong front-to-back signal discrimination, making them ideal where you want to focus RF energy in a specific direction.
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