Data transmission device

Details Data transmission device Data transmission device

2011-07-19

2011-07-19

Vo, Don N (Department: 2611)

Pulse or digital communications

Transceivers

Reexamination Certificate

active

07983328

ABSTRACT:
A data transmission device for sending back data on a reflected wave of an unmodulated carrier, the data transmission device includes: an antenna adapted to receive an unmodulated carrier Fo from a data reader with which data is to be exchanged and send a reflected wave of the unmodulated carrier Fo to the data reader; subcarrier oscillation means for generating a subcarrier frequency Fs; subcarrier modulation means for digitally modulating sending data on the subcarrier Fs; D/A conversion means for generating the analog modulated subcarrier wave Fs by converting a digital modulated signal, generated by the subcarrier modulation means, into analog form; and frequency mixing means for mixing the unmodulated carrier Fo and modulated subcarrier wave Fs to generate new modulated waves Fo+Fs and Fo−Fs.

REFERENCES:
patent: 2006/0045219 (2006-03-01), Wang et al.
patent: 2006/0211386 (2006-09-01), Thomas et al.
patent: 10209914 (1998-08-01), None
patent: 2005-072790 (2005-03-01), None
patent: 200564822 (2005-03-01), None
patent: 2006-005651 (2006-01-01), None
patent: 2006-323223 (2011-03-01), None
Japanese Office Action for corresponding JP2007-066184 issued on Apr. 5, 2011.

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