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UHF Shorted Bowtie Loop (SBL)
UHF Shorted Bowtie Loop (SBL) Antenna analyzed using 4nec2.

An SBL is a Loop Antenna with an interior Bowtie acting as a Feedline.
It is compared here to just a Loop as well as just a 6 or 4-Whisker Bowtie.
Date(s): 15 Sept 2009. Album by holl_ands. 1 - 12 of 12 Total. 11295 Visits.
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Twin-Hoop Chireix vs "Figure-8" Twin-Loop
vs Shorted-Bowtie-Loop (SBL) vs 2-Bay Hentenna
vs 6-Whisker Bowtie vs Single Loop.
In decreasing UHF Gain order.

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Compare UHF Raw and Net Gain:
Shorted-Bowtie-Loop (14.6-in O.D.)
Circular Loop (8.5 + 8.0-in O.D.)
Bowtie (23.3-in Wide)

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Compare UHF SWR (300-ohm):
Shorted-Bowtie-Loop (14.6-in O.D.)
Circular Loop (8.5 + 8.0-in O.D.)
Bowtie (23.3-in Wide)

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Shorted-Bowtie-Loop - 3D View

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Shorted-Bowtie-Loop - Front View
(AWG7, 14.6-in O.D.)
[One small box = 0.25-inch]

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Shorted-Bowtie-Loop - Side View

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Shorted-Bowtie-Loop - Top View

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Shorted-Bowtie-Loop - 4nec2 File
AWG7 Copper Wire

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Shorted-Bowtie-Loop - 4nec2 File
AWG12 Copper Wire

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Shorted-Bowtie-Loop - UHF Raw Gain
AWG7 Copper Wire

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Shorted-Bowtie-Loop - UHF SWR
AWG7 Copper Wire

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Shorted-Bowtie-Loop - UHF Impedance
AWG7 Copper Wire

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Thanks for the antenna gallery and graphs!
Nathan, Wed, 15 Nov 2017 11:22AM
wonderful info I heard about these thru 2000 (rats! cn't remember the rest of scr. name.  been looking and looking and it is slowly making sense
Jay Daniels, Wed, 13 Jan 2010 1:48PM