Dual mode delta-patch antenna for short range wireless wearable device

We proposed a compact size planar dual band delt-apatch antenna in two layers of stacked PCB structure. The antenna supports two distinct operating modes at two different frequencies that a first mode of the antenna supports communication between multiple wearable devices on body and a second mode supports communication between wearable device to out body wireless network. The antenna design has been verified both in simulation and measurement to validate its operation at 950MHz and 2.4GHz bands.