4-6 GHz Balun design?

[prototypingfool]

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

 

[Higgler]

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.

 

[prototypingfool]

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

Yes, etching.

F

 

[prototypingfool]

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

f

 

[Higgler]

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.

http://www.amazon.com/Coplanar-Wave...=sr_1_1?ie=UTF8&s=books&qid=1270827026&sr=8-1