BiQuad antenna question

gary lists at lazygranch.com
Tue Feb 20 10:08:57 PST 2007


It would help to have the link to the antenna design.

I'm going to upload a photo tonight of a biquad I built that is a bit 
easier to build than most of the designs on the net. Basically, all I 
did was use round loop at 3x the wavelength rather than squares that are 
a wavelength on each side.

IMHO, you need to build these antennas using a connector on the back, 
not coax. This is because you need a rigid "pipe" on the antenna to feed 
the loops.

This is the "proper" biquad design in that is uses a coax feed to the loop:
http://martybugs.net/wireless/biquad/
Mine is similar except I use a N female to N female adapter with one of 
the N connectors hacksawed off as the basic feed. This bypasses the 
copper pipe deal. And as I stated earlier, it uses loops instead of squares.


Rastislav Galia wrote:
> Rastislav Galia  wrote :
>> Hello
>>
>> there is a description of the biquad antenna design on 
>> seattlewireless.net website. I am puzzled by a detail of the design, 
>> namely the short coax attached to the quad terminated by N connector. Is 
>> it possible to attach a much longer (2-3 meters) coax terminated by 
>> RSMA, that would connect directly to AP ?
>>   
> To clarify my question a bit: is it possible to _substitute_ the short 
> coax terminated by N connector with long coax terminated by RSMA ?
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