Dual frequency transceiver device

A transceiver device comprising:

• a sensor adapted to receive an interrogation signal comprising a carrier frequency modulated at a modulation frequency, wherein the modulation frequency is less than the carrier frequency, the sensor also adapted to vary its impedance in accordance with a low frequency input, the sensor thereby generating a low frequency signal, wherein a frequency of the low frequency input is less than the modulation frequency;
• and
• a demodulator coupled to the sensor, the demodulator adapted to demodulate the low frequency signal relative to the carrier frequency, the demodulator thereby generating a response signal comprising the modulation frequency modulated by the low frequency signal, wherein a frequency response of the demodulator is less than the carrier frequency, and wherein the frequency response of the demodulator is greater than the modulation frequency;
• and
• an output antenna coupled to the demodulator, the output antenna adapted to transmit the response signal.

A method for transceiving, the method comprising the steps of:

• receiving an interrogation signal including a carrier frequency modulated at a modulation frequency, wherein the modulation frequency is less than the carrier frequency;
• receiving a low frequency input, wherein a frequency of the low frequency input is less than the modulation frequency;
• generating a low frequency signal based upon the low frequency input;
• modulating the interrogation signal with the low frequency signal;
• demodulating the low frequency signal relative to the carrier frequency with a demodulator to thereby generate a response signal, wherein the response signal comprises the modulation frequency modulated by the low frequency signal, wherein a frequency response of the demodulator is less than the carrier frequency, and wherein the frequency response of the demodulator is greater than the modulation frequency;
• and
• transmitting the response signal with an output antenna.