Design an antenna for a specific frequency (e.g., 2.4GHz) by calculating length via f=2Lc (≈6.25cm for dipole), adjusting for dielectric (FR4 εr≈4.3) to shorten, and matching impedance to 50Ω via feed point or transformer for efficient radiation. Choose Your Target Frequency For instance, a Wi-Fi router operating at 2.4 GHz has a fundamentally different antenna […]
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Yagi antennas are directional, with a driven element, reflector, and directors, offering 10–15dBi gain at 2.4GHz for focused point-to-point links. Omni antennas radiate uniformly horizontally (2–5dBi gain), suited for area coverage; Yagi typically operates 400MHz–6GHz, Omni 30MHz–6GHz, differing in pattern and use case. How They Send and Receive Signals A Yagi antenna, like a flashlight,
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