tenchy
Tue 13th Apr 2010, 14:01
Hi,
I'm new here, didn't see a who are you intro section (hope I'm not blind!) so here goes straight in.
In the past I have made a capacitive match for a yagi using a rod soldered into an N-type socket, sleeved that with insulation and fitted a snug fitting ali tube which in turn got connected to my driven element.
It was a bit heath robinson, but it worked and I got a good match and antenna worked.
But what I would like to do now is make a smaller version, but calculating the capacitance value by design.
Is there an online calculator, or formula handy, where I can put my d1, d2, Er of dialetric, and length in to get a capacitance?
Also, I'd like to be able to calc the max power handling too.
Cheers.
I'm new here, didn't see a who are you intro section (hope I'm not blind!) so here goes straight in.
In the past I have made a capacitive match for a yagi using a rod soldered into an N-type socket, sleeved that with insulation and fitted a snug fitting ali tube which in turn got connected to my driven element.
It was a bit heath robinson, but it worked and I got a good match and antenna worked.
But what I would like to do now is make a smaller version, but calculating the capacitance value by design.
Is there an online calculator, or formula handy, where I can put my d1, d2, Er of dialetric, and length in to get a capacitance?
Also, I'd like to be able to calc the max power handling too.
Cheers.