Synthesis of 8th order Active-Band pass filter for UHF Radio Frequency Identification System using MFB Topology

B.A. Atsuwe, A. N. Amah and G.A. Igwue
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B.A. Atsuwe: Department of Science Education, University of Agriculture, Makurdi-Nigeria
A. N. Amah: Department of Physics, University of Agriculture, Makurdi-Nigeria
G.A. Igwue: Department of Electrical/Electronics, University of Agriculture, Makurdi-Nigeria

International Journal of Research and Scientific Innovation, 2021, vol. 8, issue 3, 01-05

Abstract: This paper presents the design and simulation of eight order Active Band pass filter for UHF Radio Frequency Identification System (RFID) using the multiple Feedback Topology and the gain magnitude response is simulated using MULTISIM work bench version 11.0. the result shows that the filter has a mid-band frequency that decreases from f0=40KHz (106.505dB) to f0=256KHz (87.908dB) and increases again from f0=320KHz (88.449dB) to 640KHz (95.085dB), while the Bandwidth increased from 0.959KHz to 21.537KHz (ff0=40KHz to f0=320KHz) and then decreases from 25.376KHz to 25.162KHz (f0=465KHz to f0=640KHz). The roll-off rate behaves like a single filter with values approaching -60dB/decade instead of a double stage filter. These however conform with the specifications of EPC class one Generation 2 Standard for UHF domain RFID which offer new opportunities to develop RFID systems for better performance. Therefore the filter can be used for RFID systems.

Date: 2021
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