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4-6 GHz Balun design?

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prototypingfool

Electrical
Nov 3, 2009
23
I'm prototyping a small dipole antenna from 4-6GHz and am looking for a good reference design for something in that frequency range. There are a number of chip baluns available but have a higher insertion loss. I'm etching the antenna on standard FR-4 pcb.

I'm hoping there is a "balun calculator" someone has ran across, or maybe to point me in the right direction. Thanks in advance,

Frank
 
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any vendor 180 degree stripline connectorized hybrid will do.
4-8 ghz is a standard band.


That's a wide band for a standard dipole, I hope your arms are very thick and possibly tapered.

Why make a dipole?
I'd suggest a notch antenna or a discone or a bicone. No baluns needed and much easier to build. If you need it to be planar on a circuit card, you can do that with these antennas too.

 
I meant loop antenna (sorry) and why would a 180degree hybrid do the job?

Yes, etching.

F
 
Also, i'll need it up to about 5 watts, so a reference design i can etch would be ideal.

f
 
balun's and 180 hybrids are essentially the same name for two different items.

Hence, look up 180 degree stripline hybrid designs or balun designs in the books on Amazon

here's a book on amazon. Do the "seach inside this book" and you'll find out if they have 180 coplanar hybrid designs.
 
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