CDBA BASED FILTER DESIGNING AND ANALYSIS

Abstract

Some types of filters are essential for the operation of many electronic circuits. It is Therefore it is in the interest of everyone involved in electronic circuit design to know how to develop filter circuits which are capable of meeting given specifications. Unfortunately, some in the electronics field are uncomfortable with the subject, because of lack of familiarity with it and the difficulty with the mathematics involved in a complex filter design. Also, the ladder filters which are passive in nature does not prove to be much effective. So, filters using active blocks like op amps, CFOA, OTA, CDBA and other blocks find a great importance these days. The lower order filters i.e. second and third order have high cut off frequencies and that is the reason higher order filters are designed. Higher order filters along with providing a lower cut off frequency also have response near to the ideal response. In this work this has been illustrated by designing filters starting from second order to fifth order.