ova stranica
https://www.changpuak.ch/electronics/lpda.php mi izbacuje ovo:
**** Logarithmic Periodic Dipole Antenna ****
https://www.changpuak.ch/electronics/lpda.php
JavaScript Version 12.01.2014, based on ARRL ANTENNA BOOK, 17th ED.
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Min. Frequency : 800 MHz
Max. Frequency : 2600 MHz
Boomlength : 363.8 mm
Gain : 7.52 dB
Elements : 13
tau : 0.865
sigma : 0.159
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Bandwidth (active region) : 1.76
Bandwidth (structural) : 5.73
Bandwidth (effective) : 3.25
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Element 1, Rod : 93.8 mm, Position : 0.0 mm, Diameter : 1.9 mm
Element 2, Rod : 81.1 mm, Position : 59.7 mm, Diameter : 1.6 mm
Element 3, Rod : 70.1 mm, Position : 111.2 mm, Diameter : 1.4 mm
Element 4, Rod : 60.6 mm, Position : 155.8 mm, Diameter : 1.2 mm
Element 5, Rod : 52.4 mm, Position : 194.4 mm, Diameter : 1.1 mm
Element 6, Rod : 45.3 mm, Position : 227.7 mm, Diameter : 0.9 mm
Element 7, Rod : 39.2 mm, Position : 256.6 mm, Diameter : 0.8 mm
Element 8, Rod : 33.9 mm, Position : 281.5 mm, Diameter : 0.7 mm
Element 9, Rod : 29.3 mm, Position : 303.0 mm, Diameter : 0.6 mm
Element 10, Rod : 25.3 mm, Position : 321.7 mm, Diameter : 0.5 mm
Element 11, Rod : 21.9 mm, Position : 337.8 mm, Diameter : 0.4 mm
Element 12, Rod : 18.9 mm, Position : 351.7 mm, Diameter : 0.4 mm
Element 13, Rod : 16.4 mm, Position : 363.7 mm, Diameter : 0.3 mm
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Rod je duljina dipola podijelijeno sa dva, a diamter ?