Civil Engineering Reference
In-Depth Information
For a given RC mesh with grounded capacitors‚ the MNA matrix of con-
ductances defined in Section 2.2 has the following form
where is the branch conductance between nodes and and
is the sum of all branch conductances connected to node We define the
capacitance matrix
C
and the corresponding capacitance vector
C
as
is the value of the grounded capacitance at node
where
A very widely used result states that the Elmore delay‚
to the
node
of an RC network is given by the
element of the
vector
The proof of this statement is as follows [Wya87]. The current flowing
through all capacitors can be abstracted as dependent current sources that
inject the current
