Luiz Peregrino resumes & CV records
Resumes
Luiz Peregrino
Luiz Te Peregrino, Age 9022871 Longdown Rd, Cupertino, CA 95014
Luiz Peregrino Phones & Addresses
22871 Longdown Rd, Cupertino, CA 95014 (408) 255-8982 (408) 446-1254 (408) 888-4246
22667 Royal Oak Way, Cupertino, CA 95014
1388 Spoonbill Way, Sunnyvale, CA 94087
Santa Clara, CA
22871 Longdown Rd, Cupertino, CA 95014 (408) 888-4246
Education
Degree:
High school graduate or higher
Mentions for Luiz Te Peregrino
Publications & IP owners
Us Patents
Single Sampler Heterodyne Method For Wideband Frequency Measurement
US Patent:
4135243, Jan 16, 1979
Filed:
Jul 15, 1977
Appl. No.:
5/816041
Inventors:
Luiz Peregrino - Cupertino CA
Darwin H. Throne - Cupertino CA
Darwin H. Throne - Cupertino CA
Assignee:
Hewlett-Packard Company - Palo Alto CA
International Classification:
G01R 2314
US Classification:
364484
Abstract:
An input signal of unknown frequency is applied to a sampler which is driven by a sampling signal of frequency f. sub. O to produce an intermediate signal of frequency f. sub. IF. The sampling frequency f. sub. O varies in response to a randomly, or pseudo-randomly varying signal which in turn causes the signal of frequency f. sub. IF to also vary. f. sub. IF will vary in the same way as f. sub. O, but with a scale factor of. +-. N, where N is the harmonic number. Correlation techniques are used to determine the harmonic number and the sideband to enable calculation of the input frequency. Errors in the determination of the harmonic number and sideband due to frequency modulation of the input signal are reduced, due to the variation imposed on the sampling frequency f. sub. O.
Method For Harmonic Number Determination In A Microwave Frequency Counter
US Patent:
5008610, Apr 16, 1991
Filed:
Jul 31, 1989
Appl. No.:
7/388208
Inventors:
Nancy W. Nelson - San Jose CA
Lee D. Cosart - Palo Alto CA
Luiz Peregrino - Cupertino CA
Eric M. Ingman - Los Altos Hills CA
Lee D. Cosart - Palo Alto CA
Luiz Peregrino - Cupertino CA
Eric M. Ingman - Los Altos Hills CA
Assignee:
Hewlett-Packard Company - Palo Alto CA
International Classification:
G01R 2502
US Classification:
324 84
Abstract:
Method and apparatus for determining a generalized harmonic number in a harominic heterodyne converter wherein the frequency of an input signal is determined from a local oscillator frequency, an intermediate frequency obtained by mixing the local oscillator frequency with the input signal, and a harmonic number. The likelihood of error in determining harmonic number is reduced by providing a large separation between local oscillator frequencies that are used in determining harmonic number. The method involves the steps of determining an estimated harmonic number utilizing closely-spaced local oscillator frequencies and then utilizing the estimated harmonic number to compute widely-spaced local oscillator frequencies which are utilized for determining a corrected generalized harmonic number. One variation of the technique is utilized for high harmonic numbers, and another variation of the technique is utilized for low harmonic numbers.
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