Environmental Engineering Reference
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factorization and forward/backward substitutions. The computation re-
quired for LU-factorization is much less than that of a significant
speedup is therefore achieved. For instance, at step size and with
100 sidebands considered, the adjoint network-based method is nearly
15 times faster than the brute-force method when only
one
noise source
is considered.
Also observed is that with the increase in the number of sidebands to
be folded over to the baseband, the speed up plot in Fig.11.34 becomes
flat. This is because the cost of LU-decomposition of
start
to dominate the total cost of computation.
The third example is switched capacitor band pass filter shown in
Fig.11.14 [118] with the value of the circuit parameters given in Table
11.5 except the unit gain frequency of the operational amplifier. The
unit-gain frequency of the operational amplifier is set to be 10 GHz
such that the noise band width is mainly determined by the channel
resistance of the MOSFET switches and shunt capacitances. The input-
referred white noise of the operational amplifiers is
The
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