Removal of earth's magnetic field effect on magnetoelastic resonance sensors by an antisymmetric bias field

► A design for high accuracy magnetoelastic resonance sensors is presented. ► It is based on applying an antisymmetric magnetic field to an amorphous ribbon. ► Frequency shifts due to the influence of the earth's magnetic field are removed. ► The principle was successfully tested using magnetic coils. ► The principle was successfully tested using antiparallel permanent magnets.