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presented and their effectiveness has been compared using example cir-
cuits. We have shown that direct sensitivity analysis approach yields the
exact sensitivity of periodically switched linear circuits but at the cost of
computation because each network analysis only yields sensitivity to one
circuit parameter. To compute the sensitivity of the response to multiple
circuit elements efficiently, adjoint network approach is preferred. We
have shown that the sensitivity of the response of periodically switched
linear circuits at a frequency in the base band consists of the contribu-
tion of the network variables both at the frequency in the base band
and those at corresponding sidebands. Similar approaches have been
extended to group delay analysis of periodically switched linear circuits.
To analyze the output noise power of periodically switched linear cir-
cuits, noise sources encountered in periodically switched linear circuits
and their characterization in the frequency domain have been investi-
gated in detail. Noise equivalent circuits of semiconductor devices typi-
cally encountered in periodically switched linear circuits have also been
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