Power handling of Quad-Ridge Waveguide

Hi,

I want to design a quad-ridged waveguide. I also need transition, a coaxial feed. How should I choose the waveguide parameters and feeder in order to satisfy power handling?

Thanks

what sort of power levels are you wanting it to handle ?

Dave

Power rating at one atomosphere in cw for example 400 Watts.

Need help..

50 Ohm system?

Yes, the waveguide will have 50 Ohm Impedance.

That's about a 200 V pk-pk system. Tons of low loss cabling that can handle that.

you basically have to make sure:
1) at no place along the transmission lines the gaps are so small that it arcs over. This includes when the end is being loaded with ALL expected possible impedances . Ridge waveguide concentrates most of the Efield between the two ridges, and they are typically spaced a small distance apart
2) u have to make sure that any series elements(like the coax center conductor) can handle the RF current

Is there any formula, or is it just trial and error method?

So...your quad ridge WAVEGUIDE will have a 50 ohm impedance, huh? Better hit the books pal.