Third-Order Reconnection-Less Electronically Reconfigurable Multifunctional Filter

This paper introduces a third-order reconnection-less electronically reconfigurable filter constructed of operational transconductance amplifiers (OTAs) and a current amplifier with individual gain control of its outputs. All capacitors in the filter structure are grounded. The filter offers thirteen transfer functions based on the configuration of current gains without a necessity of any manual reconnection or modification. The design is verified by PSpice simulations alongside with experimental measurements using available active elements.