Invention Grant
- Patent Title: Wireless communication system using surface acoustic wave (SAW) second harmonic techniques
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Application No.: US12778818Application Date: 2010-05-12
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Publication No.: US08099048B2Publication Date: 2012-01-17
- Inventor: Peter J. Edmonson , Colin K. Campbell
- Applicant: Peter J. Edmonson , Colin K. Campbell
- Applicant Address: CA Waterloo
- Assignee: Research In Motion Limited
- Current Assignee: Research In Motion Limited
- Current Assignee Address: CA Waterloo
- Agency: Jones Day
- Main IPC: H04B7/00
- IPC: H04B7/00 ; H04B1/26 ; H04B15/00 ; H04B1/00 ; H04B11/00 ; H03H9/00 ; H04Q5/22
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.
Public/Granted literature
- US20100220772A1 Wireless Communication System Using Surface Acoustic Wave (SAW) Second Harmonic Techniques Public/Granted day:2010-09-02
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