Abstract
A new technique for the conversion of ladder based filter into CFOA based filter has been proposed. The technique uses signal flow graph and converts the existing LC ladder based filter into band pass & band stop configurations. The design of band pass and band stop filter has been realized using the proposed technique. The proposed configuration is implemented using CFOA as an active device and all the capacitors are grounded. CFOA based circuits have greater linearity, high dynamic rate, high slew rate and high signal bandwidth. Simulation has been carried out using simulation software P Spice (v10.1). The simulation results have been demonstrated and discussed.
Highlights
The birth of electronics lead to the need of new active devices and invention of transistors was extremely beneficial
This paper presents a systematic approach using signal flow graph technique for realizing the passive ladder based band pass and band reject filter into Current feedback operational amplifier (CFOA) based band pass and band reject filter
Band Pass Filter In Case 1, A Band Pass Filter is simulated with R=1 R=2 R=3 R=4 R=5 R=6 R=7 5 kΩ and = R8 R=9 R=10 R=11 R=12 100 Ω
Summary
The birth of electronics lead to the need of new active devices and invention of transistors was extremely beneficial. This paper presents a systematic approach using signal flow graph technique for realizing the passive ladder based band pass and band reject filter into CFOA based band pass and band reject filter. Current feedback operational amplifier (CFOA) based CM circuits have received considerable attention in many filtering and signal processing applications. Rathore and Khot [7] have designed a Low Pass and High Pass filter configuration using CFOA They have given a systematic method of deriving CFOA based all grounded capacitor filter from Current Mode RLC prototype ladders. Sinhaetl proposed a Signal Flow Graph approach for realizing CFOA based high pass and low pass ladder filter [8]. Active realization of Band Pass and Band Reject ladder filter using current feedback operational amplifier (CFOA) has been presented. The paper is organised as follows: 1) Introduction. 2) Transformation of passive ladder based band pass filter into CFOA based band pass filter(Circuit Analysis of ladder based filter using KVL & KCL, Signal Flow Graph, Equivalent CFOA based Circuit and Output Waveforms). 3) Transformation of passive ladder based bandreject filter into CFOA based bandreject filter(Circuit Analysis of ladder based filter using KVL & KCL, Signal Flow Graph, Equivalent CFOA based Circuit and Output Waveforms). 4) Simulation Results. 5) Conclusion
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