GEORGE A VON EDWINS
Medical Practice at Pepper St, Melbourne, FL
License number
Florida 518801
Issued Date
Jul 30, 2007
Effective Date
Dec 26, 2016
Expiration Date
Dec 1, 2018
Category
Health Care
Type
Emergency Medical Technician
Address
Address
371 Pepper St NE, Melbourne, FL 32907
Phone
(321) 432-7008
Personal information
See more information about GEORGE A VON EDWINS at radaris.comName
Address
Phone
463 Autumn Ter, Sebastian, FL 32958
160 W Trotters Dr, Maitland, FL 32751
4828 Ironwood Trl, Bartow, FL 33830
10451 Casa Grande Cir, Spring Hill, FL 34608
463 Conover Ave NE, Palm Bay, FL 32907
Professional information
Subsampling Digitizer-Based Frequency Synthesizer
US Patent:
6603362, Aug 5, 2003
Filed:
Mar 14, 2000
Appl. No.:
09/524992
Inventors:
George E. Von Dolteren, Jr. - Palm Bay FL
Assignee:
Intersil Americas Inc. - Irvine CA
International Classification:
H03L 700
US Classification:
331 25, 331 12, 331 16, 375376, 327107, 327159, 327156
Abstract:
A reduced phase noise multiplication, digitally controlled frequency synthesizer employs a subsampling digitizer to downconvert (perform âconstructive aliasingâ of) the synthesizers output frequency to baseband for precision tuning of the synthesizers output frequency in a digitally controlled phase locked loop. The use of a digitally controlled phase locked loop allows the stepsize of the synthesizer output frequency to be controlled in very small (e. g. , sub-Hertz) increments. Since the phase locked loop uses all digital components for tuning control, no additional frequency division by the loop is required. This means that only the value of the subharmonic ratio ânâ of the subsampling clock to the analog-to-digital converter will determine multiplicative phase noise error.
Method And Apparatus For Calibrating Integrated Circuit Analog-To-Digital Converters
US Patent:
5861826, Jan 19, 1999
Filed:
Jun 30, 1997
Appl. No.:
8/885273
Inventors:
Tzi-Hsiung Shu - Melbourne FL
George E. Von Dolteren - Palm Bay FL
George E. Von Dolteren - Palm Bay FL
Assignee:
Harris Corporation - Palm Bay FL
International Classification:
H03M 110
US Classification:
341120
Abstract:
The calibration method preferably comprises the steps of: driving the analog-to-digital converter (ADC) with at least one test signal; calibrating the driven ADC over a series of successive ADC calibrations; generating a series of successive ADC figure of merit measurements for respective successive ADC calibrations, the series of successive ADC figure of merit measurements defining at least a portion of a curve having a local minimum/maximum; and stopping calibrating at an ADC calibration corresponding to the local minimum/maximum of the curve defined by the series of successive ADC figure of merit measurements. The step of calibrating preferably comprises incrementally calibrating the ADC over the series of successive ADC calibrations. The method preferably further comprises the step of determining the local minimum/maximum of the curve. In particular, the step of determining preferably comprises fitting an equation to the series of ADC figure of merit measurements; and calculating the local minimum/maximum based upon the equation.