Pulse or digital communications – Pulse transmission via radiated baseband
Reexamination Certificate
2005-08-30
2005-08-30
Ha, Dac V. (Department: 2634)
Pulse or digital communications
Pulse transmission via radiated baseband
C375S316000, C375S340000, C375S349000
Reexamination Certificate
active
06937663
ABSTRACT:
A baseband signal converter device for an impulse radio receiver combines multiple converter circuits and an RF amplifier in a single integrated circuit package. Each converter circuit includes an integrator circuit that integrates a portion of each RF pulse during a sampling period triggered by a timing pulse generator. The integrator capacitor is isolated by a pair of Schottky diodes connected to a pair of load resistors. A current equalizer circuit equalizes the current flowing through the load resistors when the integrator is not sampling. Current steering logic transfers load current between the diodes and a constant bias circuit depending on whether a sampling pulse is present.
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Jett Preston
Larson Lawrence E.
Pollack Bret A.
Rowe David A.
Alereon Inc.
Ha Dac V.
Sprinkle IP Law Group
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