THOMAS LEE SHEWELL
Engineers in Basket, PA

License number
Pennsylvania PE045570E
Category
Engineers
Type
Professional Engineer
Address
Address
Basket, PA 19547
LicenseFiles verified this license of Apr 25, 2017 at the Pennsylvania Licensing System.

Professional information

Thomas Shewell Photo 1

Thomas Shewell - Oley, PA
Work:
Dickinson's Residential Service Annex - Carlisle, PA
Computer Technician Procter & Gamble - Carlisle, PA
Business stagey class consultant CWM Legal, LLC - Reading, PA
Intern Beijing Yinghanda English Academy
English Tutor, Beijing, China Cumberland County Court House - Carlisle, PA
Intern
Education:
Peking University
Chinese Dickinson College - Carlisle, PA
BA in International Business & Management

Thomas Shewell Photo 2

Methods And Devices For Testing The Operation Of Counters Used In Phase-Locked Loops

US Patent:
6356126, Mar 12, 2002
Filed:
Jul 10, 2000
Appl. No.:
09/612980
Inventors:
David L. Anderson - Kutztown PA
Naresh Gupta - Berwyn PA
Thomas L. Shewell - Oley PA
Thomas F. Strelchun - Mertztown PA
Assignee:
Agere Systems Guardian Corp.
International Classification:
H03L 700
US Classification:
327151, 327154
Abstract:
Intermittent miscounts generated by counters used in a phase-locked loop (“PLL”) are precisely measured by detecting changes to a predetermined waveform, such as a sawtooth waveform. The miscounts are detected using an open loop, not closed loop, set-up which comprises two separate signal generators feeding two separate frequencies into MAIN and REF counters of a PLL. Offsetting the frequencies slightly and integrating an output generates the predetermined waveform. Thereafter, miscounts can be detected by comparing waveforms corresponding to miscounts to theoretically predicted, predetermined waveforms.

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