3 elements Yagi-Uda antenna

Antenna description:
3 elements Yagi-Uda design for HF spectrum;
Boom length 0.3372 Wavelength; i.e. 3.55m@28.4MHz;
Front/Rear ratio >= 21dB both E/H plane; peak 29dB;
Gain >=  6.3 dBi; i.e. >=  4.2 dBd;
Impedance = 28.1 Ohm +/- j0.0 Ohm;
(need 1.77:1 balun with 180° phase shifter);
Bandwidth >= 2% (i.e. 600KHz@28.3MHz)
1.03:1 <= SWR <= 1.32 : 1
aluminum tube T6060 of stepped diameter sizes
Warning: this is not a tested antenna, for
home brewing select your own design then cut-try and measure.

Radiation pattern Yagi-Uda antenna model n° 283FR63G281ZBW2

dimension in wavelength:

half elements, in wavelengths:  
   pos./diam.     0.0019     0.0015

Ref    0.0000     0.0950     0.1599
DE     0.1729     0.0950     0.1461
D1     0.3372     0.0950     0.1315

dimension in mks (example @ 28.48 MHz):

half elements, in centimeters (@28.480 MHz):
   pos./diam.     2.0000     1.6000

Ref    0.0000   100.0000   168.3000
DE   182.0000   100.0000   153.8000
D1   355.0000   100.0000   138.4000

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