Register to reply

Capacitance of a wire mesh

by m1985
Tags: capacitance, mesh, wire
Share this thread:
m1985
#1
Jan11-09, 09:18 PM
P: 2
Hi Guys,

I seem to have forgotten most of EM, but I was hoping for some help on estimating the capacitance of a wire mesh/grid parallel to a solid plane. I'm guessing that it will follow the form of a simple parallel plate (with the appropriate area factor) if the geometries are such that the fringe fields can be neglected...

Thanks!
Phys.Org News Partner Engineering news on Phys.org
A spray-on light show on four wheels: Darkside Scientific
Research project on accident-avoiding vehicle concluded
Smaller artificial magnetic conductors allow for more compact antenna hardware
berkeman
#2
Jan12-09, 01:59 PM
Mentor
berkeman's Avatar
P: 41,258
That's how I would approach it as an initial approximation. If the mesh is pretty open, it might be better to approximate it as a combination of a bunch of wires over the plane.
m1985
#3
Jan12-09, 02:11 PM
P: 2
Thanks... that sounds about right. I'm having a hard time visualizing the E-fields when many wires are placed close together above the ground plane.... I'm thinking that the total capacitance isn't simply the summation of the capacitance of each individual wire to the plane...
Thanks!

berkeman
#4
Jan12-09, 02:17 PM
Mentor
berkeman's Avatar
P: 41,258
Capacitance of a wire mesh

Quote Quote by m1985 View Post
Thanks... that sounds about right. I'm having a hard time visualizing the E-fields when many wires are placed close together above the ground plane.... I'm thinking that the total capacitance isn't simply the summation of the capacitance of each individual wire to the plane...
Thanks!
I'm wondering about that too, but if the wires are at the same potential.... You can sketch the E-field and resulting equipotential surfaces for a single wire, and then see what it looks like when you parallel up some wires at the same potential...


Register to reply

Related Discussions
Thick wire vs thin wire Electrical Engineering 18
KCL or MESH problem Engineering, Comp Sci, & Technology Homework 3
Dynamic mesh a Mechanical Engineering 0
Mesh Analysis Engineering, Comp Sci, & Technology Homework 5
Into troubles with a mesh Differential Geometry 0