Method and system for down-converting an electromagnetic signal

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United States of America Patent

PATENT NO 9350591
APP PUB NO 20150244551A1
SERIAL NO

14639296

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Methods for down converting a modulated carrier signal to a demodulated baseband signal are described herein. The method requires that a first portion of energy is transferred from the modulated carrier signal, and stored at a first storage device when a first switch is on. At least some of the energy stored in the first storage device is discharged when the first switch is off. The method further comprises transferring a second portion of energy from the modulated carrier signal, storing at a second storage device the second portion of transferred energy when a second switch is on, and discharging at least some of the energy stored in the second storage device when the second switch is off. A down-converted in-phase baseband signal portion is generated from the energy accumulated in the first storage device while both the charging and the discharging occurs, and a down-converted inverted in-phase baseband signal portion is generated from the energy accumulated in the second storage device while both the charging and the discharging occurs, and the two portions are combined with a first differential amplifier circuit to form a down-converted differential in-phase baseband signal.

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Patent Owner(s)

  • PARKERVISION, INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bultman, Michael J Jacksonville, US 127 6308
Cook, Robert W Switzerland, US 135 6444
Looke, Richard C Jacksonville, US 121 6095
Moses, Charley D Jacksonville, US 16 187
Rawlins, Gregory S Lake Mary, US 163 7461
Rawlins, Michael W Lake Mary, US 129 6754
Sorrells, David F Jacksonville, US 233 10982

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