SECURE DECRYPTION METHOD

摘要

A Hybrid feedback Controlled Oscillation Modulator (HCOM) has a 1<SUP>st</SUP> feedback path from the output voltage of the switching stage Vp and a second feedback path from the filter output Vo, the two feedback paths superposed to provide a weighted state feedback signal Vf. Said state feedback path signal is subtracted from the input signal to form an error signal, said error signal filtered by a forward path compensation block B(s), closing the loop by feeding said pulse modulator, said loop having a transfer function such that self-oscillation can be established in the closed loop system. In a preferred embodiment, the first feedback path has a low pass characteristic and the second feedback path lead characteristic, the first feedback path being weighted by a weighting factor ß. Further embodiments include a pure passive realization without forward path means B(s) and the application of 3rd feedback loops to enhance global amplifier performance.