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Realization of modular multidimensional complex digital filters using GIC concept

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2 Author(s)
Rameshwaran, K. ; Dept. of Electron. & Commun. Eng., Nat. Inst. of Technol., Tiruchirappalli, India ; Eswaran, C.

It is known that complex digital filters possess certain advantages over real digital filters in processing complex signals such as increased computational speed and efficiency. In this paper, a simple and systematic procedure which can be implemented through a computer program is presented for realizing a specific class of multidimensional (M-D) complex digital filters. The proposed filter structures are derived from analog reference configurations comprising generalized immittance converters and resistors by making use of wave concept. These filters possess many salient properties such as low noise, low sensitivity and capability of realizing multiple transfer functions simultaneously which are inherited from the reference analog filters they are derived from. These features make them attractive for very large-scale integrated (VLSI) implementation. It is shown that the proposed filter structures can be obtained directly from the specified M-D discrete transfer function without the need for realizing any analog reference configuration.

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Circuits and Systems II: Express Briefs, IEEE Transactions on  (Volume:51 ,  Issue: 8 )