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Current Mode Elliptic Filter Design Based on Symmertical Current Switching

Dudek, F., Al-Hashimi, B.M. and Moniri, M. (2000) Current Mode Elliptic Filter Design Based on Symmertical Current Switching , pp. 163-77.

Record type: Conference or Workshop Item (Other)


This paper decribes a current-mode elliptic filter structure based on dual OTAs and grounded capacitors. The filter is capable of producing both lowpass and highpass-notch responses without changing the filter structure. This is achieved using a symmertical current switching technique based on two switches controlled with a 2-bit digital word. The proposed filter structure forms a basic 2nd-order building block in the design of high-order elliptic filters with tunable frequency resposne. To confirm the theoretical analysis, simulated and measured results of 4th-order elliptic lowpass and highpass filters with tunable bandwidth in the range of 0.65MHz to 1.3MHz are included. Finally, detailed analysis of the OTA non-ideal parameters on the filter performance is presented and an example is given.

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Published date: February 2000
Additional Information: Address: USA
Organisations: Electronic & Software Systems


Local EPrints ID: 251552
PURE UUID: 2d504789-2e25-4f9b-8456-f478c68a7c49

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Date deposited: 07 Dec 1999
Last modified: 18 Jul 2017 10:09

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Author: F. Dudek
Author: B.M. Al-Hashimi
Author: M. Moniri

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