Dual frequency transceiver device
US10984300B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 23, 2018 |
| Grant date | Apr 20, 2021 |
| Priority date | — |
| Expiry date | Jan 18, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N30/8554
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.