Canadian TV, Computing and Home Theatre Forums - View Single Post - Baluns (Brands, Designs, Losses, DIY Loops, etc.)
Thread: Baluns (Brands, Designs, Losses, DIY Loops, etc.)
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Old 2009-02-05, 09:42 PM   #66
mlord
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Quote:
Originally Posted by holl_ands
Or use one of the several quarter & half wavelength Baluns:
http://www.iw5edi.com/ham-radio/files/I0QM_BALUN.PDF
Cool! I like that link, because it confirms what my mind had worked out about a nifty H-frame matching circuit I saw once.

That design dispensed with the extra 1/2L section of coax, and just connected the two 1/4L impedance match sections directly to the center feed lines of the H-array, but 1/2L apart, getting the same end result for free.

The scary part is, I think I fully understood it.

So now, for my own 50ohm quad-dipole H-array, I just need to fabricate a pair of 1/4L matching sections with a 61ohm impedance (to connect the 50ohm H-array to 75ohm RG6).

Thanks!
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