Performance of radiation pattern and polarization diversity for body-centric applications at 2.45 GHz

The performance of radiation pattern and polarization diversity is presented for body-centric applications at 2.45 GHz using a multi-mode dual-polarized, dual-pattern antenna. Two different scenarios have been investigated i.e., an omnidirectional (monopolar) radiation pattern with a polarization normal to the body surface, and a directional (broadside) radiation pattern with a polarization parallel to the body surface. The study is verified by both full-wave simulations using CST Microwave Studio^TM and real-time measurements on a human subject in an indoor environment. Both simulations and measurements demonstrate a remarkable gain in link budget when the appropriate polarization and pattern diversity schemes are selected on transceiver side.