Further Research on Frequency Characteristics of KHN Filter
Huang He-jie · Hainan Daxue xuebao. Ziran kexue ban · 2010
A new multifunctional KHN filter was designed,which achieve high-pass,band-pass and low-pass filtering respectively and simultaneously.Through modifying resistance ratio,the circuit can become a current-mode oscillator and the pole angular frequency and quality factor can be tuned accurately and independently.The circuit contains three OPs,two capacitors and nine resistances,which has higher cost-effective.The simulated results were also illustrated.