Communication device and method of making the same
US10235614B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 1, 2016 |
| Grant date | Mar 19, 2019 |
| Priority date | — |
| Expiry date | Jun 16, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N30/8554
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A communication 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.