Dr. William H. “Herb” Sims

                                                                    PROFESSIONAL SUMMARY                                                          

 

Skills/expertice – orbital and suborbital payloads/subsystems

       Over 33 years of experience in designing, fabrication of prototype and acceptance testing of cutting edge RF/Microwave and mixed signal circuits to include transmitters, receivers with advanced Digital Signal Processing (DSP) algorithms and a newly developed NASA Transponder.

       Feasibility studies, to include link budget analysis, of proposed missions and customer requirements. Responsible for conceptual solution and Prototyping, Protoflight, Qualification and Flight Grades space hardware of advanced engineering projects.

       Participation in all program stages (PDR, CDR and other milestones) with customers and subcontractors.

       Strong understanding of NASA’s Near Earth Network (NEN) and Deep Space Network (DSN) compatibility requirements to include The Consultative Committee for Space Systems (CCSDS) data handling standards.

       EMI/EMC – design, development and qualification of space hardware for both conducted and radiated emissions/susceptibility using standard engineering.

       Programming of embedded processors in C and Assembler using architectures such as Microchip PIC microcontrollers for use in the design, development and testing of complex active phased array space systems for communications.

       Digital signal processing algorithm refinement with MATLAB DSP tools targeting FPGA platforms.

       Effective organizational, communication and interpersonal skills working in concert with other subsystem engineers to coordinate requirements documents, test plans and operation manuals.  Traits include autonomy, self-motivating, good team spirit, capability to work under pressure, and goal oriented.

 

important projects/milestones

·      Co-Lead RF Engineer for Chandra X-Ray Observatory launched in 1999.  Originally designed for a five-year mission life.  Chandra has surpassed 15 years on-orbit and still producing valuable science data.

·      Lead RF Engineer for In-Space Propulsion System using Anti-Matter RF/Superconducting Magnetic Containment System: 2000-2003.

·      Lead RF Engineer for Microwave Marshall Airborne Polarimetric Imaging Radar (MAPIR) Phased Array Antenna Subsystem - currently supporting Soil Moisture campaigns: 2003-2008.

o   MAPIR is an advanced State-of-the-Art airborne scanning phase array system with four independent scanning beams that continues to support soil moisture campaigns throughout the United States.

·      Lead RF Engineer for the Fast Affordable Satellite Technology (FASAT-HSV01) satellite communication Subsystem: 2008-2010.

o   Developed advanced State-of-the-Art Real-Time data CCSDS encoding/decoding hardware to offload intensive computational requirements from the flight computer to the telemetry system.

o   Designed for eight month mission duration, but lasted over 30 months on orbit without any communication anomalies.

·      Lead RF Engineer for Marshall Space Flight Center Programmable Ultra-Lightweight System Adaptable Radio (PULSAR) S-/X-Band In-House Developed Transponder Subsystem: 2009-Present.

o   Developed State-of-the-Art Digital Signal Processing Algorithms in both transmitter (S-Band and X-Band) and receivers (S-Band and X-Band) to maximize data throughput on both uplink and downlink from the NEN.

                                                                                EDUCATION                                                                      

 

University of alabamA, College of engineering                                         Tuscaloosa, AL

Ph.D. in Electrical Engineering                                                                                                                          2000

·       Emphasis on Communication Theory and Electromagnetics

·       Design of High Efficiency Microwave (S-Band) Power Amplifier

 

University of alabama - huntsville, College of engineering            Huntsville, AL

Master of Science in Electrical Engineering                                                                                                           1996

·       Emphasis on Communication Theory

·       Simulation/Analysis of High Efficiency Microwave Power Amplifier

 

University of Iowa, College of engineering                                                    Iowa City, IA

Bachelor of Science in Electrical Engineering                                                                                                        1991

·       Emphasis on Communications and Electromagnetics.

 

                                                                                EXPERIENCE                                                                     

Rockwell/collins                                                                                                        Cedar Rapids, Iowa

Avionics Division, Cedar Rapids, IA                                                                                          July 1986 - 1991

 

National Aeronautics and Space administration (NASA)                    Huntsville, Alabama

Marshall Space Flight Center, Huntsville, AL                                                                         July 1991 - Present

·       Co-Lead RF engineer for Chandra X-Ray Observatory launched in 1999. 

·       In-Space Propulsion System using Anti-Matter RF/Superconducting Magnetic Containment System: 2000-2005

o   Adjunct Professor in association with Anti-Matter System, Tuskegee University, 2000-2005.

·       Lead RF engineer for Microwave Marshall Airborne Polarimetric Imaging Radar (MAPIR) science instrument currently supporting Soil Moisture campaigns: 2005-2008 

·       Lead RF engineer for the Fast Affordable Satellite Technology (FASAT-HSV01) satellite communication system: 2008-2009

·       Lead RF engineer for Marshall Space Flight Center Programmable Ultra-Lightweight System Adaptable Radio (PULSAR) S-/X-Band In-House Developed Transponder Subsystem: 2009-Present.

 

                                                                  ADDITIONAL INFORMATION                                                         

 

Patents : Eleven US Patents to date dealing with RF/Microwave communication systems and subsystems, development work with antimatter containment systems and non-nuclear heating of high power nuclear propulsion systems.

·       "Power Divider for Harmonically Rich Waveforms". Patent Number: 6,320,478, issued November 20, 2001.

·       "High Efficiency S-Band Microwave Power Amplifier". Patent Number: 6,388,512, issued May 14, 2002.

·       "Radio Frequency Trap for Containment of Plasmas in Antimatter Propulsion Systems Using Rotating Wall Electric Fields”.  Patent Number 6,667,487 B1, issued December 23, 2003.

·       "Radio Frequency Trap for Containment of Plasmas in Antimatter Propulsion Systems Using Rotating Wall Electric Fields”.  Patent Number 6,800,835 B2, issued Oct 5, 2004.

·       "Radio-Frequency Driven Dielectric Heaters for Non-Nuclear Testing in Nuclear Core Development”. Patent Number 7,095,000 B1, issued August 22, 2006.

·       "Radio Frequency Power Load and Associated Method”.  Patent Number: 7,831,225 B2, issued November 9, 2010.

·       "High power RF Solid State Power Amplifier System”.  Patent Number: 8,004,364 B1, issued August 23, 2011.

·       "Rapidly Deployed Modular Telemetry System”.  Patent Number: 8,577,519 B1, issued November 5, 2013.

·       "Radio Frequency Power Load and Associated Method”.  Patent Number: 8,902,015 B1, issued December 2, 2014.

·       "System for Configuring Modular Telemetry Transponders”.  Patent Number: 8,769,387 B1, issued July 1, 2014.

·       "Adaptable Transponder for Multiple Telemetry Systems”.  Patent Number: 8,754,804 B1, issued June 17, 2014.

 

pulbications: Over 15 authored or co-authored peer reviewed publications primarily in the area of communication systems.

 

Peer awards: Over 45 NASA peer selected awards.


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