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Realization of tunable elliptic low-pass filter based on CCCIIs
Author(s)
Kunto, Terdsak
Date Issued
March 11, 2016
Type
Conference Paper
Abstract
This article presents a realization of electronically tunable current-mode Elliptic ladder low-pass filter using CCCIIs. The passive RLC ladder filters prototype and signal flow graph method (SFG) are employed for synthesis. The CCCII-based lossy, lossless integrators and current attenuator are required for the circuit realization. The proposed filter circuit can be electronically tuned between 1 kHz and 1 MHz through bias current from 0.05μA to 50μA. The proposed filter use ±1.5V power supply with 6 mW power consumption at 50 μA bias current. The proposed filter uses grounded capacitors without external resistors which is suitable for further integration. The total harmonic distortion (THD) of the low-pass filters is less than 0.5% over the operating frequency range. PSPICE simulation results are carried out, obtained by using BJT model parameter of HFA 3046, confirm the presented theory.
Citation
2015 International Symposium on Intelligent Signal Processing and Communication Systems Ispacs 2015, 331-336, 2016