Single-resistance-controlled quadrature oscillator using CFOAs for GMI magnetic sensors

摘要

A class of single-resistance-controlled (SRC) quadrature sinusoidal oscillator using CFOAs for GMI magnetic sensors is presented in this paper. By means of state variable, the proposed circuits are designed and analyzed which has the advantages such as noninteractive control of the oscillation condition (CO) and the oscillation frequency (FO), good sensitivity performance and minimum components including grounded capacitors. Moreover, the workability of the proposed circuit has been verified by PSPICE simulations.