Summary
International Technical Conference on Circuits/Systems, Computers and Communications
2016
Session Number:T1-2
Session:
Number:4415
Electronically Tunable Multiple-Input Single-Output Voltage-Mode Multifunction Filter Using OTA and DURC
Ukrit Kornkanok, Paitoon Rakluea, Virote Pirajnanchai, Supachai Klungtong ,
pp.415-418
Publication Date:2016/7/10
Online ISSN:2188-5079
Summary:
This paper presents the design method for multifunction filter circuit. The characteristics of filter (low-pass, high-pass, band-pass, band reject filter, and all-pass) can be obtained without changing circuit topology. Its scheme is principally composed of passive element using double capacitive layers uniform distributed RC (DURC) and active element using operational transconductance amplifier (OTA). The frequency response of filter circuit can be adjusted by the transconductance gains of OTA without affecting the circuit's quality factor (Q). The performance of the proposed filter circuit was simulated by PSpice. Its simulation results were performed for the low-voltage power supply with only plus/minus 2VDC. In addition, the circuit is advantage that there are good magnitude response and low sensitivities of less than one unit. The simulation results of circuit are in good agreement with the theoretical calculations. The proposed filter circuit is very suitable to further develop into a VLSI circuit for communication and signal processing system.