Systems and methods for a multiband sensing platform

A multiband sensing method comprising:

• receiving, from a network, a request signal at a first frequency, wherein the request signal includes information modulated over a carrier signal;
• demodulating the request signal to extract the information;
• based on the information, actuating a sensor element using the request signal to sense a first environment value;
• generating a transmit signal by modulating the extracted information and the first environment value over a re-transmit signal, wherein the re-transmit signal is in a re-transmit frequency band different from a carrier frequency band of the carrier signal;
• and
• transmitting the transmit signal to the network.

A multiband sensing system comprising:

• an active multiband sensing unit including:
• an active transmitting antenna configured to transmit a request signal, wherein the request signal is within a first frequency band;
• an active modulator configured to modulate information over the request signal;
• and
• an active receiving antenna configured to receive signals;
• and
• a passive multiband sensing unit including:
• a passive receiving antenna configured to receive the request signal;
• a demodulator configured to demodulate the request signal to extract the information and power;
• a sensing element configured to sense a value of an environment condition, wherein the sensing element is activated using the extracted power in response to the information indicating a first passive identifier of the passive multiband sensing unit;
• a passive modulator configured to modulate the value over the request signal to produce a new frequency band signal;
• and
• a passive transmitting antenna configured to transmit the new frequency band signal to the active multiband sensing unit.