
148 Equivalent Circuit Method and Magnetoelectric Low-Frequency Devices
series expansion of the frequency f(ω) about ω
s
. After comparing
with the impedance expansion of a series L
m
, C
m
circuit and
including a mechanical dissipation impedance Z
m
, equivalent circuit
where
R
L
Q
Z
Q
mech
smech
mech mech
==
wp
0
8
;
, and R
Load
is an external load.