Abstract
This paper reviews mixed-mode signal processing architectures for computation of discrete signal processing transforms. The Resistance-String and Capacitor-Switched architectures utilize a resistance string and capacitor array, respectively, along with switched-capacitor circuits for their implementation. Switched-Current architecture utilizes switched-current circuits for implementing the processing elements. Programmable block matrix transform architecture uses floating gate circuits for computations. All these mixed-mode architectures make use of different technology and circuits to compute the transforms in real time.
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