Compact two-element reconfigurable antenna system for the 470–702 MHz band

This paper presents a miniature reconfigurable dual-antenna system addressing the UHF band. This system has been introduced for small mobile terminals, where form factor is very important. The whole structure respects some design rules in order to optimize antenna performances from diversity performances point of view. A specific active capacitive load has allowed the impedance reconfigurability and antennas miniaturization. Antenna miniaturization is used to combine radiating structures in an electrically small volume. The use of two antennas could bring good diversity gain to mitigate the fast fading effect introduced by multipath in mobility.