Dual-polarized synthetic array for indoor GNSS handheld applications

Size and cost considerations of handheld terminals limit the use of antenna array for combating multipath fading in these applications. Recently, a synthetic array based on moving a single antenna was proposed for handheld terminals. This technique however fails to provide enough diversity gain when the channel is spatially correlated. A combination technique based on merging polarization and spatial diversities is proposed herein. The diversity performance of the dual-polarized RHCP/LHCP antennas in the synthetic array mode is then compared to that of a single RHCP synthetic array case for GNSS applications. Finally, the proposed technique is put into test through an extensive set of measurements.