A new type of wave digital filter

✍ Scribed by M.N.S. Swamy; K.S. Thyagarajan

• Publisher: Elsevier Science
• Year: 1975
• Tongue: English
• Weight: 885 KB
• Volume: 300
• Category: Article
• ISSN: 0016-0032
• DOI: 10.1016/0016-0032(75)90186-6

✦ Synopsis

This paper proposes a new wave digital filter derived from doubly terminated LC-ladder networks by replacing each series or shunt amlE element of the ladder by its equivalent digital two-port. It is shown that such two-ports may be cascaded without the use of adapters defined by Fettweis (1). A number of realizations of the wave dig&al two-ports, which are canonic with respect to both multipliers and delays, have been obtained. Also a realization which is canon& with respect to multipliers only is given and an example considered using this realization. The sensitivity of this jilter with respect to the multiplier coeficient change8 due to finite word length is compared with the conventional cascaded digital filter and also the one proposed by Renner and Gupta. It is found that the proposed Jilter appears to be a more desirable form of implementation than the conventional cascade form and cornparable to that of Renner and Gupta (2). ' > fi= A-R&B-RID 2 2R, ' R= A-R,C B-RID -2 2R, I