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A Yagi–Uda antenna, or simply Yagi antenna, ... Yagi Antenna calculator and computer designs 2020 This page was last edited on 10 November 2024, at ...
A turnstile antenna, or crossed-dipole antenna, [1] is a radio antenna consisting of a set of two identical dipole antennas mounted at right angles to each other and fed in phase quadrature; the two currents applied to the dipoles are 90° out of phase.
A quad is a Yagi–Uda antenna ("Yagi") made from loop elements instead of dipoles: It consists of a driven element and one or more parasitic elements; however in a quad, each of the loop elements may be square, round, or some other shape. It is used by radio amateurs on the HF and VHF amateur bands.
Moxon antenna for the 20-meter band.The antenna is the faint rectangle of wires held in tension by the bent X-shaped support frame. Moxon antenna for the 2-meter band. The Moxon antenna or Moxon rectangle is a simple and mechanically rugged two-element parasitic array, single-frequency antenna. [1]
2.4 GHz helical antenna radiation pattern (NEC simulation). The Numerical Electromagnetics Code, or NEC, is a popular antenna modeling computer program for wire and surface antennas.
However, a Yagi with the same number of elements as a log-periodic would have far higher gain, as all of those elements are improving the gain of a single driven element. In its use as a television antenna, it was common to combine a log-periodic design for VHF with a Yagi for UHF, with both halves being roughly equal in size.
Antenna calculators. 66pacific.com — Online calculator that solves the "Basic equations for a small loop" using formulas from The ARRL Antenna Book, 15th ed. "An overview of the Underestimated Magnetic Loop HF Antenna" (PDF). Magnetic loop antennas. www.nonstopsystems.com
Multiple Yagis The "double Yagi" (upper right) and the "Tri-Boom" (lower left) have multiple Yagi arrays that are tuned to different portions of the band, giving the combined antenna wide BW. The "double Yagi" is really two Yagis side-by-side; each parasitic element is two rods insulated from each other in the center. The "Tri-Boom" is three Yagis.