Reuse of the mobile communication antenna for FM reception

Abstract

A conventional monopole antenna (λ/4) operating a t FM frequencies is too long for being integrated in a mobile phone. In order to avoid big external antennas or u sing the wire of the headsets, a new solution is proposed. It con sists in reusing an existing mobile phone antenna usually operating at the communication standards (ex: GSM, CDMA, UMTS) with the aim of achieving operation also at FM band. Impedan ce, received power and audio quality measurements have been carr ied out demonstrating that a mobile handset antenna operati ng at GSM 900/1800 also allows users to listen to FM satisfac torily.