Shah Nejad Email & Phone Number

Las Cruces, Nm, Us

California, United States

Space qualified phased array antennas with beam pointing.

Las Cruces, New Mexico, United States

Drone and UAV Bus and payload design for customers with unique requirements

Las Cruces, New Mexico Area

Worked on NASA 4.5m dual S and Ku bands antenna drive system. Responsible for developing PCD (Preliminary Concept Document) which includes defining system requirements, proposing design approaches, performing design trade analysis, preparing ROM (Rough Order of Magnitude) and Bases of estimates (BOE) cost, preparing preliminary schedule, presenting at System Engineering Working Group (SEWG). The proposed approaches were based on in-house refurbishment, and vendor turn-key solution ROM costs. In-house approach was based on replacing the jack screw and drive motor controller using Yaskawa DC motors and embedded FPGA controller. Worked on replacement of NASA BRTS (Bi-lateral Ranging Transponder System) for satellite Orbit Determination (OD). Responsible for developing PCD for sustainment of the BRTS network of 4 ground stations. Proposed an in-house approach to use the legacy system design RF front-end and replace the unsupported and proprietary baseband receiver that is based on a low cost COTS receiver design from Comblock SDR (Software Defined Radio) using FPGA platform. The receiver alone provided a cost saving of $320K when compared with RT-Logic proprietary receiver. Worked on replacement of 10m S-band TT&C antenna drive system. Responsible for preparing PCD to present system requirements, design approaches, ROM cost analysis for each design, trade study of the approaches, preliminary schedules, and recommend an approach with summary quad chart. Prepared PDCR (Preliminary Design Concept Review) presentation for NASA representatives.Worked on upgrading the Spectrum Analyzer Monitoring System using VM (Virtual Machine) network system accessing the RF and IF spectrum of each SGLT (Space to Ground Link Terminal). Responsible to prepare PCD defining requirements, providing approaches, and presenting KDPs (Key Decision Points), e.g., PDR, CDR, SAR, and ORR.

Las Cruces, New Mexico Area

Systems Engineering management of NASA ground antenna terminals. Responsible for NASA Guam facility 77ft dielectric antenna radome wind analysis using 3D laser scanning method and early warning wind system. Also responsible for performance analysis of the 11m antenna drive system using dual BLDC motors, drive amplifier and digital controller.

Las Cruces, New Mexico Area

Systems Engineering Management of NASA Guam TDRS ground station facility. Responsible for engineering analysis of 77ft composite radome, ECU chiller cooling system, and battery replacement trade studies.Principal Systems Engineer, responsible for Technical Management and support of the NASA Guam tracking Station from White Sand Complex. Technical lead in managing tasks related to the operation of TDRS ground terminal, i.e., waveguide engineering changes, 16.5 m antenna Radome repair task order, 11 m antenna drive system analysis, Ku-band polarization limit switch, and site engineering survey. Held weekly telecom Guam SE engineering meeting. Prepared schedule for multiple tasks and executed plans.Principal RF Systems Engineer, responsible for Technical Management and support of the SGSS program at White Sand Complex. SGSS Lead Space to Ground Link (SGL) element working group reviewed technical requirements and provided trade analysis for enhancement of Main Mission antennas operating at S/Ku/Ka bands. SGSS Lead Digital Signal Processing (DSP) working group reviewing subcontractor level 4 requirements. Lead I&T team measuring antenna G/T and assessing 18 meter antenna main reflector integrity through analysis and modeling of the antenna main and sub reflectors using Ticra Grasp modeling software; Provided space to ground link budget analysis.

Las Cruces, New Mexico Area

Staff Sr. RF Systems Engineer responsible for planning and management of NASA next generation TDRS Satellite ground terminal and SCNS contract with operation at S and K bands.

San Antonio, Texas Area

RF consultant responsible for the design analysis of the existing high voltage HPCA (Hot Plasma Composition Analyzer) and RF Generator sub circuit assembly for the Satellite Spacecraft. Performed sub-circuit analysis using Spice, and Microwave Office design models. Optimized design performance using Agilent test equipment (NA, and Spectrum Analyzer). The Oscillator design needed to deliver 100 to 400 DC voltages to a capacitive load at frequencies from 5MHz to 10 MHz. Inductive resonator with inductive feedback loop was designed to deliver high voltage DC conversion at a given operating frequency. Team lead engineers and technicians working on the planning of the RF flight hardware through integration and testing.

Tucson, Arizona Area

• RF Center directorate managing department technical reviews using Raytheon IPDS process and process improvement tools, i.e., CMMI, Six Sigma and others. Responsible for Peer Review and action item management of Antenna, Datalink, Radar, and RF Subsystem departments. Developed a Six Sigma process plan improving the effectiveness of peer reviews. Managed department RF testability projects tracking schedule, resources, and cost.• IRAD proposal work with Low Earth Orbit (LEO) and Operational Responsive Space SAR satellite imaging responsible for the modeling and analysis of a low cost deployable antenna. Performed trade analysis in S/X/Ku bands. • RF Data Link Radio IPT Lead, working on NLOS and JSOW programs responsible for technical development of the radio systems operating at L and UHF bands. REA role in support of Link16 radio and management of the supplier design, development, test, and integration planning from engineering to production phase.• Senior Principal Engineer Responsible for developing MDA/Navy Standard Missile-3 communication requirements modeling and analyzing missile antennas, atmospheric losses (i.e., rain, clouds, gases, Ionosphere, and refraction), rocket plume, jamming, Rocket trajectory and over-the-horizon multipath interference. • Multiple KV and unitary KV relay datalink radio design responsible for RF board preliminary design (PDR/CDR) reviews. Provided design analysis of RF Tx/Rx chain loss budget, 40 W PA class-C amplifier design, LNA, two stage mixers, AGC/ALC circuit models. Performed analysis using spreadsheet and ADS design tools. • Developed techniques in applying the Rotman lens feed system for high gain steered beam antennas for missile application. • Supported Raytheon Multiple Kill Vehicle (MKV-R) proposal effort generating trade studies and analyzing communication payload for the Exoatmospheric nuclear turbulent medium. • Supported NASA Constellation program proposal, Orion’s mission to Moon and Mars.

Dulles Virginia Area

Scientist responsible for design and development of C/Ku/Ka satellite communication payloads supporting major programs for Intelsat managing Horizons-2, Intelsat-11, and Intelsat-16 antenna communication payloads. Designed and developed Dual Grid shaped Reflectors (DGR) managing end-to-end processes, and supporting SDR, CDR design meetings, Integration & Test process plans and procedures, and routine customer interfaces. Experience with 40x20 Nearfield Range, RF simulation tools such as NEC, GRASP, POS, Champ, HFSS, RF Designer (Ansoft), Matlab data processing covering antenna pattern, and coverage polygon analysis.

Colorado Springs, Colorado Area

Principal RF/Systems Engineer responsible for providing technical direction in support of RADRS and Ka-Star Programs. Supported RADRS program providing technical lead in verifying the antenna subsystem specifications. Reviewed and verified antenna link budget analysis in UHF/C/X/Ku/Ka bands. Supported Ka-star programs providing technical analysis for the dual band feed system at X/Ka bands. Analyzed link budget parameters for the new feed using analytical formulation to DSCS and WGS satellite constellations. Provided leadership in proposing advanced communication system/system architectural designs.SENIOR SYSTEM ENGINEER, AIR FORCE / DOD SENSOR Programs directorate Senior Systems Engineer responsible for providing technical direction to engineers for the SENSOR Program in all product lines (Eglin Radar/ SLEP, PAVE PAWS/BMEWS, PARCS, GEODSS, HAVE STARE, Navy/Air Force Fence)Mentored all SENSOR product line systems engineering leadsInterfaced with Government customers and team matesReviewed all SENSOR program projectsIdentified new radar and optical Space Surveillance technologies related to “Global Awareness” and “Missile Defense” for the SENSOR programSupported bid and proposal development for SENSOR and other ITT Systems Division projects. Provided technical direction in leading PAWE PAWS Printer Interface Device (PID) prototype ahead of schedule. Identified methods of measuring antenna loads for PARCS dummy loads. Characterized BMEWS antenna array element and provided measurement specifications. Modeled BMEWS Solid State Modules (SSM) using Ansoft Designer and HFSS finite element methods. Researched L-band phased array antenna for SENSOR modernization effort. Provided MathCAD computational analysis for the phased array antenna, i.e., antenna patterns, Gain, Link loss, G/T and the space objects RCS models. Worked on Six Sigma and Green Belt processes. Drafted a project development resource process.

Ms, Electrical Engineering

Bs, Mechnical Engineering