Single RF oscillator single-side band modulation for RFID...

Details Single RF oscillator single-side band modulation for RFID... Single RF oscillator single-side band modulation for RFID...

2008-06-03

2008-06-03

Tweel, Jr., John A (Department: 2612)

Communications: electrical

Condition responsive indicating system

Specific condition

C375S344000, C455S047000, C455S109000, C455S203000

Reexamination Certificate

active

07382257

ABSTRACT:
A transmitter shifts a baseband data signal having a bandwidth of 2ωMusing a tone signal having a frequency ωM, which centers a sideband of the data signal at zero frequency. The transmitter then filters the shifted signal to filter out the non-centered sideband, and then adds the tone signal to form a composite signal. The transmitter upconverts the composite signal during a first operational mode using a RF signal having a frequency ωCequal to a center frequency of a channel. In a second operational mode, the transmitter upconverts a DC level using the same RF signal. The upconverted DC level can be used as a continuous wave carrier signal having a frequency ωC. The transmitter has a single RF oscillator to output both a SSB signal centered at frequency ωCduring the first mode and a carrier signal of frequency ωCduring the second mode.

REFERENCES:
patent: 4852086 (1989-07-01), Eastmond et al.
patent: 5164985 (1992-11-01), Nysen et al.
patent: 5253270 (1993-10-01), Petit
patent: 7026935 (2006-04-01), Diorio et al.
patent: 7107022 (2006-09-01), Thomas et al.
patent: 2005/0052282 (2005-03-01), Rodgers et al.
patent: 2005/0099270 (2005-05-01), Diorio et al.
patent: 2006/0145855 (2006-07-01), Diorio et al.
Notification of Transmittal of the International Search Report or the Declaration in connection with International Application No. PCT/US06/07636 dated Mar. 9, 2007.

Affiliated with

Also associated with

Rating

Single RF oscillator single-side band modulation for RFID... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Single RF oscillator single-side band modulation for RFID..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Single RF oscillator single-side band modulation for RFID... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2804958