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UHF 14-El (300-ohms) LPDA - dnes
UHF 14-Element Log Periodic Dipole Array (LPDA) Antenna analyzed using 4nec2.  NOTE: 300-ohm characteristic impedance.
4nec2 file with variable SYmbols from Walter Dnes on 9Sep2010 (33-in Boom Length), with a few mods by holl_ands to improve high freq performance:
http://www.digitalhome.ca/forum/showthread.php?p=1151493
This thread contains lots of useful LPDA information.
Date(s): 8 Dec 2011. Album by holl_ands. 1 - 13 of 13 Total. 3253 Visits.
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UHF 14-Element LPDA
3D View

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UHF 14-Element LPDA
Top View
[1 big box = 2.5-inches]

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UHF 14-Element LPDA
Front View
[1 big box = 1.25-inches]

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UHF 14-Element LPDA
UHF Raw Gain

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UHF 14-Element LPDA
UHF SWR (300-ohms) under 2.5

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UHF 14-Element LPDA
UHF Impedance

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UHF 14-Element LPDA
Azimuthal Pattern for 470 MHz

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UHF 14-Element LPDA
Azimuthal Pattern for 590 MHz

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UHF 14-Element LPDA
Azimuthal Pattern for 698 MHz

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UHF 14-Element LPDA
Azimuthal Pattern for 758 MHz

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UHF 14-Element LPDA
Azimuthal Pattern for 806 MHz

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UHF 14-Element LPDA
Side3 View
[1 big box = 2.5-inches]

Enlarge Microsoft Word Document 13
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DOC13
UHF 14-Element LPDA
4nec2 File

 
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