... steady-state
response. From (6. 6.15), the I/O difference equation of resonator is given by
ynAxnÀa
1
yn À 1Àa
2
yn À 2, 6: 6:21
where
a
1
À2r
p
cos !
0
6: 6:22a
and
a
2
r
2
p
: 6: 6:22b
A ... p
2
z
À1
, 6: 6:5
where
a
1
Àp
1
p
2
6: 6 :6
and
a
2
p
1
p
2
: 6: 6:7
The poles must lie inside the unit circle for stability, that is jp
1
j < 1 and jp
2
j < 1. From...