Method and system for improved spectral efficiency of far...

Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical therapeutic systems

Reexamination Certificate

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C128S903000, C607S032000

Reexamination Certificate

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07069086

ABSTRACT:
Radio frequency bandwidth from a far field transmitter of an implantable medical device is adjusted by controlling the data rate, the output power level, the transmitter supply voltage or combinations thereof. Adjustments are made on the basis of a sensed temperature, absence or presence of a lead or by way of wave shaping. A Surface Acoustic Wave (SAW) resonator based transmitter exhibits stable bandwidth in a temperature controlled operating environment. For temperatures outside of the range of human body temperature, the output of the SAW-based transmitter is adjusted to provide reduced bandwidth.

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Rawat, Prashant, et al., “Radio Frequency Antenna in a Header of an Implantable Medical Device”, U.S. Appl. No. 10/744,943, Filed Dec. 22, 2003, 34 pgs.

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