Dual frequency transceiver device
| DWPI Title: Transceiver device for receiving interrogation signal at first carrier frequency and transmitting response signal at second carrier frequency, has |
| Abstract: A transceiver device for receiving an interrogation signal at a first carrier frequency and for transmitting a response signal at a second carrier frequency is disclosed. The interrogation signal comprises the first carrier frequency modulated at the second carrier frequency. The communication device includes a sensor coupled to a demodulator. The sensor receives a low frequency input used to further modulate the interrogation signal. The demodulator demodulates the low frequency input from the first carrier frequency to thereby generate the response signal comprising the second carrier frequency and the low frequency input. The demodulator preferably includes a pyroelectric demodulator, a piezoelectric demodulator, or a detector diode. The demodulator preferably has a frequency response less than the first carrier frequency but greater than the second carrier frequency. |
| Use: Transceiver device for receiving interrogation signal at first carrier frequency and transmitting response signal at second carrier frequency. |
| Advantage: The working range and sensitivity of a communication link are improved. |
| Novelty: The transceiver device has an antenna (110) that is adapted to receive an interrogation signal comprising a carrier frequency modulated at a modulation frequency. A sensor (105) is adapted to vary its impedance in accordance with a low frequency input. A demodulator (115) is adapted to demodulate the low frequency signal relative to the carrier frequency. The demodulator generates response signal comprising the modulation frequency modulated by the low frequency signal. The frequency response of the demodulator is less than the carrier frequency. The frequency response of the demodulator is greater than the modulation frequency. |
| Filed: 8/23/2018 |
| Application Number: US16110442A |
| Tech ID: SD 13856.1 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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