Diego Guerra Email & Phone Number

Kent, Wa, Us

Lunar Permanence Division► Artemis V Lunar Lander and Cargo Lunar Lander Telecommunication Systems New Development Group

Kent, Wa, Us

In-Space Systems Division - I led the Blue Ring spacecraft Telemetry Tracking and Command (TT&C) subsystem team in the design and qualification of the Lunar and GEO communications subsystem:► Designed the spacecraft radio communication system architecture, Radio Frequency link budget, pseudo-noise ranging, waveform/forward error correction selection, antenna system, and performed communication system modeling and trade studies► Led TT&C team through design review cycles by generating the system engineering artifacts as well as by contributing to Hardware-In-the-Loop and Verification & Validation planning► Wrote radio and antenna system RF/Environmental requirements, and lead supplier vetting and selection► Worked on radio physical and data link layer partition according to CCSDS AOS/TM/TC and DVB-S2 standards► Worked with the other subsystems to define spacecraft configuration in terms of antenna placement, radio integration, RF harness, interface with flight computer, and environmental/radiation testing

Kent, Wa, Us

Advanced Development Programs Division - I worked on next-generation space communication systems and radio transceivers across current and future programs at Blue Origin including launch vehicles and lunar spacecrafts with focus on software defined radios and FPGA implementation:► Integration and RF Testing of Software Defined Radios based on Xilinx UltraScale+ System-On-a-Chip ► Integrated FPGA DVB-S2X modem IP cores on Xilinx MPSoC and RFSoC Software Defined Radios► Implemented a full 16-QAM Digital Tranceiver on Xilinx UltraScale+ FPGA including Automatic Gain Control, Gardner Symbol Timing Synchronizer, PLL Carrier Synchronizer, Polyphase Interpolators/Decimators► Implemented Adaptive Equalizers (Decision-Feedback and Feedforward) on Xilinx UltraScale+ FPGA including LMS and CMA Adaptive Filters, Decision-Directed LMS and CMA Adaptive Equalizers► Implemented a Deep Space Regenerative Pseudo Noise Ranging algorithm on Xilinx UltraScale+ FPGA including CCSDS DSN/T2B/T4B Correlators, Chip Tracking Loop, and Regenerative Subsystem► Implemented a Neural Network Digital Modulation Classifier for non-synchronized raw QAM, PSK, APSK samples) with Convolutional Neural Network and Recursive Neural Network architectures and deployed on Xilinx Ultrascale+ FPGA with Mathworks and Xilinx AI edge-deployment frameworks► Radiation Testing► Wrote technology development proposals for internal and external funding

Hawthorne, California, Us

Radio Frequency Integrated Circuit team - Low Earth Orbit Broadband Internet Satellite Mega-Constellation “Starlink” project where I developed and tested flight hardware currently in space:► Designed Production PCB Transmit Modules with custom RFICs for the satellite Ku/Ka-Band multi-beam Phased Array Antenna (CST, HFSS, Altium)► Designed several Ku/Ka-Band test and flight PCB structures: Filters, power combiners, distributed matching networks, supply lines (ADS, CST, HFSS, Altium)► Characterization of Ku/Ka-Band Custom RFIC Power Amplifiers and Low Noise Amplifiers► Performed on-wafer Load Pull characterization, Digital Pre-Distortion characterization, Noise Figure / Noise Parameters measurement, power supply rejection ratio, RF Instrument Automation (Matlab, Python, C#) for OFDM and single carrier modulations, High Temperature Operating Life, Radiation Testing

Cupertino, California, Us

Radio Frequency Systems and Algorithms Calibration group► Development of RF System Algorithms and Calibration for 4G/LTE Mobile Communications (C/C++) for iPhone► Transmitter/Receiver calibration for GSM, W-CDMA, TDS-CDMA, CDMA2000, FDD-LTE, TDD-LTE► Calibration Algorithm development, system integration, and on-site SMT prototype line support in China

Palo Alto, California, Us

► Two-stage power amplifier Monolithic Microwave Integrated Circuit layout and PCB module design (ADS/HFSS), RF measurements, circuit tuning ► Power Amplifier characterization with Qualcomm Envelope Tracking and Digital Predistortion system: Path-delay, supply voltage shaping functions for max efficiency / iso-gain

Tempe, Az, Us

Arizona State University & U.S. Office of Naval Research research grant:► Developed alghoritms and techniques for nonlinear modeling and large-signal characterization of Gallium Nitride mm-wave power transistors through physical device simulations► Developed a computational X-parameter extraction technique for transistor physical device simulations (C/C++, Matlab, ADS)► Implemented Harmonic Loading and Two-Tone characterization through Computational Active Load-Pull technique for GaN HEMT characterization (C/C++, Matlab)

Tempe, Az, Us

My research focused on Millimeter-wave Gallium Nitride High Electron Mobility Transistor (HEMT) non-linear modeling and simulation:► Modeled deep-submicron gate length transistors at nanoscale electron level, vertical and lateral scaling, reliability issues, parasitics, scattering mechanisms, link between nanoscale physics and transistor RF performance► Implemented Radio Frequency Time-Domain and Frequency-Domain (Harmonic Balance) circuit-solvers coupled with a microwave device physical simulator for nonlinear effects investigation (C/C++, Matlab)► Device engineering and modeling of N-face D-mode/E-mode GaN HEMTs funded by Northrop Grumman / DARPA “Nitride Electronic Next-Generation” NEXT program research grant►Computational large-signal characterization of millimeter-wave GaN HEMTs, millimeter-wave Power Amplifier performance, Dislocations, Parasitic Elements, Passivation and Surface Traps funded by an U.S. Air Force Research Laboratory (AFRL) research grant

Performed patch antenna optimization through electromagnetic simulations (CST)

Master In International Relations, Defense, And Security

Space Institutions And Policy Program

Space Studies Program 2023

Ph.D., Electrical Engineering, Radio Frequency Solid State Electronics

Master Of Science, Electrical Engineering, Telecommunications

Bachelor Of Science, Telecommunications Engineering