International Journal of Academic Multidisciplinary Research (IJAMR)   Year: 2022 | Volume: 6 | Issue: 8 | Page No.: 74-82 Performance Evaluation of Active-RC Bandpass Filter Using Composite Operational Amplifier (CNOA) and a Modified Universal Active-R Filter For UHF RFID Applications. Download PDF Atsuwe, B.A. Ph.D and Mom, J. Ph.D Abstract: This paper presents the comparison of the performance of the Active-RC filter using composite operational amplifier and a modified Active-R bandpass filters for the implementation in the ultra-high frequency (UHF) radio frequency identification (RFID) applications. From the results, the active-RC bandpass filter using composite op-amp performed incredibly well than the active-R bandpass filter in terms of filter parameters of Midband gain, extended bandwidth and roll-off rate. While the active-R bandpass filter, had advantage in terms of the shift in the centre frequency. Both filters can be used for implementation in the UHF RFID applications. This is because the frequencies from fo=40kHz to fo=640kHz are accommodated in the EPC class 1 generation 2 protocol for RFID implementation which allows a deviation of ±22% of the frequency. It is thereby recommended that cre be taken in the selection of components if a desired result is to be achieved.