[TowerTalk] Effect of element shape was: Re: InnovAntennas contact info

[Pete Smith N4ZR]

But don't Moxons have something fairly close to a cardioid pattern, with 
a narrow deep null off the back?

73, Pete N4ZR
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On 3/20/2013 9:06 AM, W1YW at aol.com wrote:
> Yeh, you can get better gain, bandwidth AND lower sidelobes. See
> 'Optimization of Wire Antennas', Landstorfer and Sacher, Wiley Interscience,  1985.
>   
> The Innova designs use end-bends to shrink the projected size of the
> element. The ends do very little to the radiation pattern in the far field on
> those size scales.
>   
> Moxon's are nothing more than 2 element Yagis with end bends. There is
> virtually no coupling at the voltage max's for the driven and parisitic==so the
>   ends can be placed fairly close together. Same with spider beams, hex
> beams,  yadayada.
>   
> The Innova design looks like a nice offering for the ham market. The
> multiband coupling is also well known: Gary Breed (who publishes Hi Frequency)
> has a patent on that.
>   
> 73,
> Chip W1YW
> --------------------------------
>   
>   
> In a message dated 3/20/2013 8:48:46 A.M. Eastern Daylight Time,
> n4zr at contesting.com writes:
>
> yes, in  a classic yagi with straight and parallel elements that is true...
> but when  you bend or make the driven element not a simple half wave dipole
> then it can  have an effect on the pattern by  itself.
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