Interrogator and tag of wireless communication system

Details Interrogator and tag of wireless communication system Interrogator and tag of wireless communication system

2007-05-29

2007-05-29

Kumar, Pankaj (Department: 2611)

Pulse or digital communications

Spread spectrum

Frequency hopping

C375S219000, C455S003010, C455S106000

Reexamination Certificate

active

10400519

ABSTRACT:
In a wireless communication system including at least one Interrogator and a plurality of Tags, the Interrogator transmits a main carrier signal, and each Tag transmits a reflected signal to the Interrogator in response to reception of the main carrier signal. The Tag Includes a receiving/reflecting system that receives the main carrier transmitted by the Interrogator and transmits the reflected signal to the Interrogator and a modulated subcarrier signal hopping system. The modulated subcarrier signal hopping system is provided with a frequency hopping system that applies frequency hopping to a subcarrier signal, and a subcarrier signal modulating system that modulates the subcarrier signal with a predetermined information signal. The Tag further includes a main carrier modulating system that modulates the main carrier received through the receiving/reflecting system with the modulated subcarrier signal, the modulated main carrier signal being transmitted to the Interrogator through the receiving/reflecting system as the reflected signal.

REFERENCES:
patent: 4183022 (1980-01-01), Baudard et al.
patent: 4206462 (1980-06-01), Rabow et al.
patent: 5828693 (1998-10-01), Mays et al.
patent: 5832026 (1998-11-01), Li
patent: 5842118 (1998-11-01), Wood, Jr.
patent: 5940006 (1999-08-01), MacLellan et al.
patent: 6177861 (2001-01-01), MacLellan et al.
patent: 6275518 (2001-08-01), Takahashi et al.
patent: 6356230 (2002-03-01), Greef et al.
patent: 6650695 (2003-11-01), Girard
patent: 6658044 (2003-12-01), Cho et al.
patent: 2002/0175805 (2002-11-01), Armstrong et al.
patent: 2004/0056091 (2004-03-01), Overhultz et al.
patent: 2004/0109419 (2004-06-01), Sano et al.
patent: 0853392 (1998-07-01), None
patent: A 7-226696 (1995-08-01), None
patent: A 8-204615 (1996-08-01), None
patent: A 9-307481 (1997-11-01), None
patent: A 10-41856 (1998-02-01), None
patent: A 10-229350 (1998-08-01), None
patent: A 11-355178 (1999-12-01), None
patent: A 2000-49656 (2000-02-01), None
patent: B2 3186989 (2001-05-01), None

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