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Nelson J Roldan, 54Holly Springs, GA

Known as:
Nelson Maria Roldan Nelson J Roldon Roldan J Nelson
Related to:
Jose Tamayo

Nelson Roldan Phones & Addresses

Woodstock, GA   

Alpharetta, GA   

4836 72Nd St, Coconut Creek, FL 33073    954-4269736    954-4228765   

Coral Springs, FL   

8538 Southgate Shores Cir, Tamarac, FL 33321    954-7182402   

8528 Southgate Shores Cir, Fort Lauderdale, FL 33321   

Lauderhill, FL   

Coconut Gr, FL   

8538 W Southgate Shores Cir, Tamarac, FL 33321   

Work

Position: Executive, Administrative, and Managerial Occupations

Education

Degree: Graduate or professional degree
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Nelson Roldan resumes & CV records

Resumes

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Enfermero

Industry:
Health, Wellness And Fitness
Work:
Barcelona Centro Medico
Enfermero
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Nelson Roldan

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Nelson Roldan

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Nelson Pineda Roldan

Nelson Roldan Photo 39

Nelson Roldan - Rochester, NY

Work:
Harris Corporation Jun 2011 to 2000
Systems Engineer 4 AAMSI - Fort Lauderdale, FL Oct 2010 to Jun 2011
Senior Design Engineer xG Technology - Fort Lauderdale, FL Apr 2006 to Oct 2010
Lead Hardware Engineer Florida RF Labs - Stuart, FL Feb 2004 to Apr 2006
Senior RF Design Engineer Aeroflex - Boca Raton, FL Nov 2001 to Nov 2003
RF Design Engineer Florida RF Labs - Stuart, FL Nov 2000 to Nov 2001
RF Design Engineer Codecom - Guaynabo, PR Dec 1999 to Aug 2000
Technical Sales Engineer University of Puerto Rico - Mayagez, PR Aug 1998 to May 1999
Electronics Laboratory Instructor
Education:
University of Miami Jun 2005
Masters in Industrial Engineering University of Miami Dec 2004
MBA in Business Administration University of Puerto Rico / Mayagez Campus - Mayagez, PR May 1998
BSEE in Electrical Engineering / Telecommunications and Electronics
Nelson Roldan Photo 40

Nelson Roldan - Rochester, NY

Work:
Harris Corporation Jun 2011 to 2000
Systems Engineer AAMSI - Fort Lauderdale, FL Oct 2010 to Jun 2011
Senior Design Engineer xG Technology - Fort Lauderdale, FL Apr 2006 to Oct 2010
Lead Hardware Engineer Florida RF Labs - Stuart, FL Feb 2004 to Apr 2006
Senior RF Design Engineer Aeroflex - Boca Raton, FL Nov 2001 to Nov 2003
RF Design Engineer Florida RF Labs - Stuart, FL Nov 2000 to Nov 2001
RF Design Engineer Codecom - Guaynabo, PR Dec 1999 to Aug 2000
Technical Sales Engineer University of Puerto Rico - Mayagez, PR Aug 1998 to May 1999
Electronics Laboratory Instructor
Education:
University of Miami Jun 2005
Masters in Industrial Engineering University of Miami Dec 2004
MBA in Business Administration University of Puerto Rico / Mayagez Campus - Mayagez, PR Dec 1999
MSEE in Telecommunications and Electronics University of Puerto Rico / Mayagez Campus - Mayagez, PR May 1998
BSEE in Electrical Engineering / Telecommunications and Electronics

Publications & IP owners

Us Patents

Temperature And Frequency Variable Gain Attenuator

US Patent:
7215219, May 8, 2007
Filed:
Apr 15, 2005
Appl. No.:
11/107557
Inventors:
Nelson Roldan - Boca Raton FL, US
Robert J. Blacka - Pennsauken NJ, US
Alen Fejzuli - Palm City FL, US
Assignee:
Smith Interconnect Microwave Components, Inc. - Stuart FL
International Classification:
H03H 11/24
US Classification:
333 81A, 333 28 R, 338216
Abstract:
A temperature and frequency variable gain attenuator comprises a temperature variable attenuator and a temperature variable filter network whose resistances changed to c generate different responses that vary over temperature and frequency. At least three different thick film thermistors are used, with two of these used on the attenuator and a third one used on the filter network. The temperature coefficients of the thermistors are different and are selected so that the attenuator and filter network attenuation change at a controlled rate with changes in temperature while the impedance of the gain equalizer remains within acceptable levels. Substantially any temperature coefficient of resistance can be created for each resistor by properly selecting and mixing different inks when forming the thick film thermistors. Furthermore, the attenuator can have either a negative temperature coefficient of attenuation or a positive temperature coefficient of attenuation.

Temperature And Frequency Equalizer

US Patent:
2006023, Oct 19, 2006
Filed:
Apr 15, 2005
Appl. No.:
11/107558
Inventors:
Nelson Roldan - Boca Raton FL, US
Gene Perschnick - Palm Bay FL, US
Robert Blacka - Pennsauken NJ, US
Alen Fejzuli - Palm City FL, US
International Classification:
H04B 3/14
US Classification:
33302800R
Abstract:
The present invention is an absorptive-type cable temperature and frequency equalizer that offsets changes in the gain of the other circuit components cables with increases in temperature and/or frequency. The equalizer comprises a temperature variable filter network having component values and a temperature coefficient of resistance that vary over temperature and frequency to produce a desired response. The temperature and frequency equalizer has at least one thick film thermistor connected in series with a quarter wavelength transmission line. The thermistor absorbs forward and reflected signals at lower frequencies.

Possible Relatives

Daisy Roldan  Deborah L Roldan  Daniel Roldan  Delia Y Roldan  Dennis B Roldan  Diana H Roldan  Dina M Roldan  Nelson Johnson  Nelson C White  Nelson L Jones 

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