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The Yagi antenna's overall basic design consists of a "resonant" fed dipole (the fed dipole is the driven element and in the picture above and the second from the left side ), with one or more parasitic elements.
26 lut 2024 · The Yagi-Uda antenna, also known as Yagi antenna, catches TV and radio signals. Invented by Japanese scientists Hidetsugu Yagi and Shintaro Uda in the 1920s, it's great at sending signals in one direction. Useful for improving TV signals, ham radios, radar, and satellite communication.
Yagi–Uda antenna. Drawing of Yagi–Uda VHF television antenna from 1954, used for analog channels 2–4, 54–72 MHz (U.S. channels). It has five elements: three directors (to left) one reflector (to right) and a driven element which is a folded dipole (double rod) to match the 300 Ω twin lead feedline.
26 lut 2024 · The fundamental design of a Yagi antenna comprises three key components: the driven element, the reflector, and the director (s). The driven element is typically a half-wave dipole antenna that is directly connected to the transmission line.
The design of a Yagi-Uda antenna is actually quite simple. Because Yagi antennas have been extensively analyzed and experimentally tested, the process basically follows this outline: Look up a table of design parameters for Yagi-Uda antennas. Build the Yagi (or model it numerically), and tweak it till the performance is acceptable
Yagi antenna design is done most often via measurements, and sometimes computer simulations. For instance, let's look at a two-element Yagi antenna (1 reflector, 1 feed element, 0 directors). The feed element is a half-wavelength dipole, shortened to be resonant (gain = 2.15 dB).
Discover the essential aspects of HF Yagi antennas, their design, and how they revolutionize long-distance HF communications. Ideal for amateur radio and broadcasting, learn about Yagi antenna benefits and innovations.
