SYNTHESIS OF INTEGRATED SELECTIVE AMPLIFIERS FOR SPECIFIED RESPONSE AND DESENSITIVITY.
CALIFORNIA UNIV BERKELEY ELECTRONICS RESEARCH LAB
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The fundamental objective of the report is the realization of highly selective, bandpass network functions in the medium of semiconductor integrated circuitry. Realization of such circuit performance has to take into consideration the special properties of integrated, monolithic microcircuitry. In view of the unavoidable dependence of integrated passive and active components on environmental conditions and on manufacturing tolerances, synthesis procedures via sensitivity functions are explored. Attention is focused on closed sensitivity formulations in order to reveal extra degrees of freedom available for desensitization. To that end, various sensitivity functions in single-loop and multi-loop feedback structures are investigated. The effect of the variation of integrated passive components is then assessed. The corresponding sensitivity contributions are shown to be independent of the circuit configuration and are expressed in form of sensitivity invariants. Based on the sensitivity formulation, sensitivity criteria are incorporated into the synthesis procedures, permitting simultaneous realization of specified response and sensitivity. The procedures make use of multi-loop feedback structures, wherein redundant transmission loops are introduced together with the correlated nature of the time-dependent and time-independent changes of integrated components.
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