The tau-cell: a new method for the implementation of arbitrary differential equations

In this paper we present the tau-cell, a building block based on a log-domain low-pass filter, which allows the creation of arbitrary differential equations using a cascade of these cells in a manner similar to the state variable methods of filter realization. In the tau-cell implementation, however, all feedback is local, i.e., each first-order section only feeds back to the previous firstorder section in the cascade.

• Type: Conference
• Year: 2003
• Where: ISCAS
• Authors: André van Schaik, Craig T. Jin
• Keywords: Filter Realization, ISCAS 2003, Log-domain Low-pass Filter, State Variable Methods