Method for weighted charge summation in bucketbrigade circuits
Abstract
It is shown that weightedcharge summation in bucketbrigade circuits for transversal filter applications can be realized if the bucketbrigade circuit is built using an arbitrary mpole instead of the simple capacitance array. The array capacitors of a capacitive summing network are replaced by a capacitive mpole, and it is shown that for open outputs in the resulting summing network, the charge extracted from an array node is equal to the charge previously filled into the same node and is independent of the charging of the other nodes. Therefore, the line is not dispersive, which is an essential condition for obtaining weighted summing.
 Publication:

Electronics Letters
 Pub Date:
 October 1974
 DOI:
 10.1049/el:19740333
 Bibcode:
 1974ElL....10..418S
 Keywords:

 Adding Circuits;
 Capacitors;
 Electronic Filters;
 Network Synthesis;
 Coupling Circuits;
 Diodes;
 Matrices (Mathematics);
 Transistor Circuits;
 Electronics and Electrical Engineering