Formula for Via Self-Capacitance and Self-Inductance

Tat Hin Tan (Tat_Hin_Tan@ccm.ipn.intel.com)
Tue, 29 Apr 97 08:41:00 PDT

Is there a formula for the self-capacitance and self-inductance for a
via surrounded by a ground plane with the following geometry?

->|D |<-
|<---- P ----->|
______________
^ |_____ _____| ^
t | | |
v | | |
__________________ | | _______|
______GND_________| | | |______GND
| | L
| | |
|<---------|R |--------->| |
| | |
______| |_____ |
|_______________| v

There is a formula for a slightly similar configuration given by Howard
Johnson & Martin Graham in their book "High Speed Digital Design" but
the capcitance calculation is not accurate enough.

Thanx in advance.
Tat Hin