The Body Problem: Antenna Selection for Wearable Devices in Demanding RF Environments

What you'll learn:

• Why conventional chip and printed antennas fail on body-worn platforms, and the four specific failure modes involved: body blocking, detuning, radiation efficiency, and variability across users.

• Why free-space datasheet figures mislead: the gap between free-space and on-body impedance stability, radiation efficiency, and link budget.

• A five-criteria framework for evaluating any antenna against real deployment demands: platform sensitivity, on-body impedance stability, on-body radiation efficiency, body-shadowing mitigation, and validation methodology.

• How rigorous validation works in practice: anechoic phantom testing and forward path gain measurements in NLoS conditions.

• The engineering implications of getting antenna selection right early: repeatable performance across users, hardware design freedom, and reduced development risk.