A passive RF sensor platform for chemical-biological sensors

This research introduces a new type of chemical-biological sensor platform. This sensor platform detects different types of chemical or biological agents without the use of probes, wires, active components, or a battery. An interrogator transmits power through radio frequency waves to the embedded device. The embedded device sends back a portion of the power through radio frequency waves with altered amplitude and phase. The characteristics of the received signal contain the information about the agent of interest. The sensor device has a functionalized surface which aids in selectivity to the analyte of interest.