A variable bandwidth memristor-based Legendre Optimum low pass filter for radio frequency applications

Onyejegbu E. Zhumabay Z. Marzuki A. Ukaegbu I.A.
November 2022 John Wiley and Sons Inc

Engineering Reports
2022 #4 Issue 11

This article presents the enhancement of Legendre Optimum low pass filter (LPF) in terms of reusability and bandwidth, based on the programmable memristance of memristors. Two LPFs of the third order, operating in the MF and VHF range, and designed using the insertion loss method are presented. At 600 kHz and 110 MHz, two Knowm memristors working in the forward ion-conduction mode replace (Formula presented.) and (Formula presented.) in the filter circuit. Their conductance and therefore memristance is varied such that (Formula presented.) decreases monotonically and (Formula presented.). Results show a bandwidth enhancement of up to 540 at 600 kHz, and up to 100 at 110 MHz. A reusable, cost-effective, variable bandwidth filter is achieved from the original fixed bandwidth filter.

Legendre Optimum low pass filter , memristive filter , memristor , RF filter , variable bandwidth filter

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Integrated Device Solutions and Nanophotonics Laboratory, Nazarbayev University, Nur-Sultan, Kazakhstan
Electrical and Computer Engineering Department, School of Engineering and Digital Sciences, Nazarbayev University, Nur-Sultan, Kazakhstan
School of Science and Technology, Wawasan Open University, Penang, Malaysia

Integrated Device Solutions and Nanophotonics Laboratory
Electrical and Computer Engineering Department
School of Science and Technology

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