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VHF/UHF Yagi Antenna Design Input. Use the following entry areas to define your antenna requirements. Specifying a Gain > 21.6 dBd or a Boom Length > 39 λ will limit the design to 21.6 dBd Gain and Boom Length to 39 λ.
16 sty 2009 · dBd refers to the antenna gain with respect to a reference dipole antenna. A reference dipole antenna is defined to have 2.15 dBi of gain. So converting between dBi and dBd is as simple as adding or subtracting 2.15 according to these formulas:
30 cze 2022 · The calculator calculates the Yagi-Uda antenna of the DL6WU design with boom-correction (correction for the influence of the load-bearing boom). Calculation is according to the G3SEK-DL6WU method. The antenna is optimized for maximum gain.
I used the VK5DJ Yagi Calculator to design a 518 MHz Yagi antenna with 8 directors. This article provided the practical help I needed to actually construct it. The antenna works great for the 518 and 494 MHz stations!
Free Online Engineering Calculator to find the Dimensions of a yagi Uda Antenna for a given Frequency Range and Length.
20 lip 2023 · Yagi Calculator is a program to assist with the design of long yagi antennas. It uses the graphs and principles developed by DL6WU and printed originally in the German Radio Magazine VHF Communications (March 1982).
A carefully designed antenna today can see as much as 30 dB – 35 dB of “rejection” (CBer term for “Front to Back ratio”). Some Yagis antennas have “corner nulls” (the back corners of the beam pattern) that can reach numbers as high as -70 dB!
