Abstract: A method and apparatus for maintaining stability while substantially compensating an output signal of a high gain, wide band amplifier having an undesirable signal dependent offset voltage, generated by signal dependent self heating of circuit components. A thermal offset voltage generator producing a signal dependent thermally generated offset voltage similar to that of the wide band amplifier is provided. The input of the thermal offset voltage generator is coupled an output of the wide band amplifier. The output of the thermal offset voltage generator is amplified and low pass filtered to provide a filtered compensating signal. The filtered compensating signal is injected into the wide band amplifier so as to substantially compensate an output signal of the wide band amplifier for the signal dependent thermally generated offset voltage of the wide band amplifier.

Abstract: A high speed charge-coupled sampler and rate reduction circuit is disclosed. The present invention allows measurement of high frequency input signals while reducing actual data rates for a series of accurately interleaved sampler data streams. The charge-coupled sampler includes a source means for providing a steady supply of charge and a sampling gate means adjacent to the source means for dividing the charge stream into discrete charge packets separated uniformly in time. An input gate means, adjacent to the sampling gate means, modulates the discrete charge packets, such that size of each charge packet is directly proportional to the instantaneous voltage applied to the input gate means. A plurality of sequential charge output means in turn surround and are adjacent to the input signal gate means. Each sequential charge output means comprises a transfer gate and a storage gate for transferring and storing the charge packet modulated by the input gate means.