A Full Wavelength Loop DOES exhibit some gain
over a dipole, varying from 0 to 2.7 dB, depending
on the height / width ratio as documented in chapter 4
of The W2PV Yagi Antenna Book. For a Square Loop,
the gain over a dipole is reported as 0.84 dB.
Think of a 1WL loop as Two Stacked Half Wave elements
with the ends folded towards each other.
The longer the boom of a Quad, the less the additional
gain versus a Yagi of the same number of elements.
This is because stacked Long Boom antennas require
greater spacing to realize the full stacking gain improvement.
Tom N4KG
On Fri, 15 Nov 2002 23:27:53 -0600 Jon Ogden <na9d@speakeasy.net> writes:
> on 11/15/02 7:45 PM, Ronald KA4INM Youvan at ka4inm@tampabay.rr.com
> wrote:
>
> > That's not what I was taught.
> >
> > How many horizontal elements does a horizontally polarized 2
> element yaggi
> > have?
>
> 2
>
> > How many horizontal elements does a horizontally polarized 2
> element quad
> > have?
>
> 2 NOT 4. There is the same number of elements. It's just a
> different type
> of element. In a quad your driven element is a loop and so are your
> parasitics. In a yagi, it's a dipole. Both are equivalent.
>
> 73,
>
> Jon
> NA9D
> -------------------------------------
> Jon Ogden
> NA9D (ex: KE9NA)
>
> Citizen of the People's Democratic Republik of Illinois
>
> Life Member: ARRL, NRA
> Member: AMSAT, DXCC
>
> http://www.qsl.net/na9d
>
> "A life lived in fear is a life half lived."
>
>
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