James Frei Phones & Addresses
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100 Hermosa Ave, Oakland, CA 94618 (510) 420-1017
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San Leandro, CA
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Pocatello, ID
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Shelley, ID
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Rexburg, ID
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Berkeley, CA
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Walnut Creek, CA
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El Cerrito, CA
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Westwood, NJ
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100 Hermosa Ave, Oakland, CA 94618 (415) 298-9798
Work
Position:
Machine Operators, Assemblers, and Inspectors Occupations
Business Records
Name / Title
Company / Classification
Phones & Addresses
President
PAMPERO LONGHORN RANCH, INC
General Animal Farm
General Animal Farm
10727 Foothill Rd, Sunol, CA 94586
Publications
Us Patents
Method And System Of Testing Device Sensitivity
View pageUS Patent:
7979225, Jul 12, 2011
Filed:
Jun 17, 2008
Appl. No.:
12/140390
Inventors:
Stephen A. Muller - Santa Clara CA, US
Xiao-Ding Cai - Fremont CA, US
Agustin Del Alamo - San Diego CA, US
James M. Frei - Sunol CA, US
Xiao-Ding Cai - Fremont CA, US
Agustin Del Alamo - San Diego CA, US
James M. Frei - Sunol CA, US
Assignee:
Oracle America, Inc. - Redwood City CA
International Classification:
G01N 37/00
US Classification:
702 82
Abstract:
Method and system that test device sensitivity according to whether the device passes or fails when subjected to a test signal. The device may be repeatedly subjected to test signal at varying operating parameters in order to assess pass-fail threshold at which the device transitions from operating properly/improperly to operating improperly/properly.
Multi-Port S-Parameter And T-Parameter Conversion
View pageUS Patent:
7627028, Dec 1, 2009
Filed:
Oct 18, 2008
Appl. No.:
12/253944
Inventors:
James M. Frei - Sunol CA, US
Xiao-Ding Cai - Fremont CA, US
Stephen A. Muller - Santa Clara CA, US
Xiao-Ding Cai - Fremont CA, US
Stephen A. Muller - Santa Clara CA, US
Assignee:
Sun Microsystems, Inc. - Santa Clara CA
International Classification:
H04B 3/46
US Classification:
375224
Abstract:
A method for making measurements using a vector network analyzer, and for multi-port S-parameter and T-parameter conversion includes a generalized T-matrix definition that facilitates the conversion between the S-parameters and the T-parameters for multi-port networks based on the well understood and mathematically simple 2-port relations. One contemplated approach generalizes all multi-port networks into two cases: balanced and unbalanced. Through careful selection of the T-matrix, the contemplated method extends 2-port symmetry to multi-port networks and provides an engineering implementable relationship between the S- and T-parameters for multi-port networks. This symmetry extension allows a practical means to cascade and de-embed such networks.