Antenna and system for wireless sensing of health monitoring

An ultra-high frequency (UHF) wireless sensor having an agent activated non-metal antenna comprising a conductive stimuli-responsive hydrogel, the sensor comprising:

• a radio frequency identification (RFID) tag in electronic communication with the non-metal antenna;
• and
• a wireless data communication integrated circuit (IC) in communication with the non-metal antenna and the RFID tag,
• wherein the wireless data communication IC receives power to turn on from the agent activated non-metal antenna.

An agent activate antenna for an ultra-high frequency (UHF) wireless sensor having a radio frequency identification (RFID) tag in electronic communication with the antenna, and a wireless data communication integrated circuit (IC), the agent activated antenna comprising:

• a first portion comprising a non-metal stimuli-responsive hydrogel material that becomes conductive in response to an activating agent;
• and
• a second portion comprising a conductive metal arranged in contact with the first portion;
• and
• wherein the antenna is configured to be inactive prior to an interaction by the first portion with the activating agent and active upon the interaction by the first portion with the activating agent,
• wherein the non-metal antenna is further configured to transmit power to turn on the wireless data communication IC only when the agent activated antenna is active upon interaction with the activating agent.