Reduction of the mutual coupling between two planar inverted-F antennas working in close radiocommunication standards

Aliou Diallo (1) , Cyril Luxey (1) , Philippe Le Thuc (1) , Robert Staraj (1) , Georges Kossiavas (1)

1 LEAT - Laboratoire d'Electronique, Antennes et Télécommunications

This paper presents a solution to reduce the mutual coupling between two planar inverted-F antennas (PIFA's) working in close radiocommunication standards: DCS1800 (1710-1880 MHz) and UMTS (1920-2170 MHz). These antennas are positioned on the corner of a limited ground plane whose size is representative of the printed circuit board (PCB) of a typical mobile phone. Three antennas are designed and several arrangements are numerically studied. Prototypes are then fabricated and measured to validate our proposed solution which consists in inserting a suspended line between the PIFA's to neutralize the electromagnetic coupling

Mots clés: Mutual coupling; 3G mobile communication; Distributed control; Frequency; Mobile handsets; Prototypes; Antenna measurements; GSM; Microstrip antennas; Transmission line theory

Domaines: Electromagnétisme

Aliou Diallo, Cyril Luxey, Philippe Le Thuc, Robert Staraj, Georges Kossiavas. Reduction of the mutual coupling between two planar inverted-F antennas working in close radiocommunication standards. Automatika ‒ Journal for Control, Measurement, Electronics, Computing and Communications, 2006, 47 (3-4), pp.113-120. ⟨10.1109/ICECOM.2005.204917⟩. ⟨hal-00102543⟩