Wireless communication system using surface acoustic wave (SAW) second harmonic techniques
US8260204B2 · kind B2 · utility
1Cited by
40References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 14, 2011 |
| Grant date | Sep 4, 2012 |
| Priority date | — |
| Expiry date | Dec 14, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/0042
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A system is for encoding information on a passive surface acoustic wave (SAW) device. The system includes a requesting unit configured to wirelessly transmit an impulse signal. The impulse signal is a signal that includes only a single pulse. A SAW device has an interdigital transducer (IDT) configured to physically store coded data. The SAW device is configured to receive the impulse signal. In response to receiving the impulse signal, the SAW device excites the IDT to generate a coded signal that includes the stored coded data and frequency components at a fundamental frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.