- Mark
On Fri, Feb 3, 2012 at 15:43, Joe <nss@...> wrote:
Thanks everyone for helping me on this. I tried the one below of bills.
http://www.eeweb.com/toolbox/wire-microstrip-impedance/
And I must maybe doing something wrong?
what dielectric is "AIR" it is 1 right? so for the dielectric I should input "1" right?
and 14 Ga wire is 2 mm diameter.
to make it 50 ohms the wire needs to be .4mm above the plane? geez the rubber insulation if left on probably would be close to the right spacing?
On 2/3/2012 2:57 PM, wb8elk@... wrote:Joe...try these:- Bill WB8ELK
-----Original Message-----
From: Joe <nss@...>
To: gpsl <GPSL@yahoogroups.com>
Sent: Fri, Feb 3, 2012 9:18 am
Subject: [GPSL] Impedance
Iknow there is an formula somewhere but I can not find it.
Like when making a open wire feed line the diameter of the conductors and spacing determines the impedance.
How about a single wire over a flat ground plane? there must be a formula somewhere for that.
Joe WB9SBD
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