Radio frequency ID Doppler motion detector
US7609163B2 · kind B2 · utility
29Cited by
6References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 1, 2006 |
| Grant date | Oct 27, 2009 |
| Priority date | — |
| Expiry date | Jun 3, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/023
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system and method for a radio frequency identification (RFID) reader for use in an RFID detection system. The reader has an RF source for generating RF signals. An antenna is coupled to the RF source. The antenna transmits interrogation RF signals to one or more RFID markers within an interrogation zone and receives communication signals from one or more items within the interrogation zone. The communication signals include Doppler signals indicating movement of an item within the interrogation zone. A receiver receives the communication signals and motion detection circuitry detects the Doppler signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.