Interests: STEM Researching, Writing, Publishing

Major Responsibilities: Lead R & D Engineer, Product Engineer for Frequency Synthesizers and SIGINT Software-Defined Radio (SDR) Systems for Defense and Commercial Applications.Specifically served as:Lead Designer of 5 - 7 GHz PLL Synthesizer for 0.02-3 to 3-8.5 GHz Block Up / Down Converter for SIGINT SDR Transceiver. Worked closely with Analog Devices Inc. to develop new state-of-the-art PLL / VCO synthesizer IC component.Co-designer of Signal Path Section for 0.02-3 to 3-8.5 GHz Block Up / Down Converter for SIGINT SDR Transceiver. Worked closely with Dielectric Laboratories Inc. to develop custom pre- / post-selector filter bank elements.Co-designer of Signal Path Section for 0.02-8.5 GHz SIGINT SDR Transceiver. Specifically involved with Rx 2nd conversion / Tx 1st conversion section using image- / sideband-reject mixer.Product Engineer for Development of 0.5-32 MHz SIGINT SDR Receiver (selectable channelization, Commercial AM band rejection, PLL-based tunable notch filters). Redesigned PLL synthesizer and developed novel alignment and evaluation procedures, which streamlined and increased production throughput.

Major Responsibilities: Consultant to Company General Manager for Technical Proposals and Cost Estimates for New Frequency Synthesizer Product Line.Specifically served as:Writer of Technical Proposal and Cost Estimate for 2 - 18 GHz PLL Frequency Synthesizer in Response to RFP / RFQ from Commercial Customer: 1 MHz channels, low phase noise, 500 uS switching, single loop with 250 KHz LBW, 100 MHz OCXO reference, fractional-N topology, multi-octave circuit, ALC output.Writer of Cost Estimate for 6 - 18 GHz PLL Frequency Synthesizer in Response to RFQ from Commercial Customer. DC - 10 MHz FM modulation BW, 100 KHz channels, low phase noise, 1 uS switching, 100 MHz OCXO reference.

Major Responsibilities: Lead R & D Engineer, Technical Lead, Product Engineer for Frequency Synthesizers in Radio and RADAR Systems for Defense and Security Applications.Specifically served as:Technical Lead for Frequency Synthesizers, Including Technical Proposals and Cost Estimates, for New Business Contracts, with State-of-the-art Performance, Consisting of Direct / Indirect (PLL), DDS / Discrete, Single / Multiple Loop, Divided / Translated Topologies.Lead Designer, for New Business Contract, of 20 / 26 GHz, 15 - 23 GHz, 4.25 - 5.75 GHz Phase-coherent Direct Synthesizer System. Worked closely with Avid Systems Inc. to develop novel high frequency phase-coherent DDS component.Lead Designer, for New Business Contract, of 20 / 24 GHz, 10 - 15 GHz Direct Synthesizer System for Broadband Up / Down Converter.Product Engineer for Development of 3.7 - 4.1 GHz, 720 MHz, 637.5 MHz Direct Synthesizer System. Assisted production by developing alignment procedures thereby reducing costs and increasing productivity.Internal Consultant, by Request of Director of Engineering, to Solve Theoretical Phase Noise Problem, which Helped with Future Business.Internal Consultant, by Request of Director of Engineering, to Solve Phase Noise to Frequency Noise Conversion Problem, which Helped with Future Business.

Major Responsibilities: Lead R & D Engineer, Team Leader for Frequency Synthesizers, SIGINT Receivers and RADAR Systems for Defense and Commercial Applications.Specifically served as:Team Leader and Co-designer of 22.5 - 39.9 GHz PLL Synthesizer for SIGINT Tuner. Very wide 15 MHz loop bandwidth - one of the widest ever achieved in the industry - using novel design concepts. Technical paper written and accepted for publication in trade journal.Team Leader and Co-designer of 9 - 10 GHz to 50 MHz Downconverter for CP-140 RADAR. Dual down-conversion topology, Lange-coupled balanced amplifiers, SMT / hybrid technologies.Team Leader for Development of X-band Transmit-Receive Unit of LAMPS RADAR. Triple stage LNA, dual conversion X-band to VHF downconverter, dual conversion VHF to X-band upconverter. Lange-coupled balanced amplifiers, SMT / hybrid chip and wire technologies.Internal Consultant, by Request of Staff Scientist, for Performance Improvement Effort of 15 / 19 / 21 GHz PLL Synthesizer for SIGINT Tuner. Implemented design modifications which improved PFD coefficient stability, spurious, lock detection / retention.Writer of Technical Proposal for 7.2 - 13.2 GHz PLL Synthesizer in Response to RFP / RFQ from Commercial Customer for New Business Contract. Fractional-N topology, frequency-agile reference.

Major Responsibilities: Lead R & D Engineer, Program Manager, Team Leader for Communication / Navigation Systems for Navy and Marine Corps.Specifically served as:Program Manager of Technical Division for Aircraft Landing Receiver. Frequency range: 75 MHz to 15 GHz. Oversaw contractor design, development and testing, chaired design reviews and technical information meetings, wrote specifications and test procedures, conducted analyses. Produced and managed budgets and schedules, tracked expenditures, produced technical and financial reports.Team Leader and Co-designer of UHF FSK / BPSK Transmitter for CCS System. Frequency range: 311.5 - 313.5 MHz, data rates: 2400 / 4800 BPS, power output: 25 W. Third overtone 78.125 MHz XO, FSK / BPSK modulators, Gilbert cell doublers, LC filters, linear and class-C amplifiers, SMT technology.Team Leader for Construction of Duplicate VLF Transmitter Section of Tactical Balloon-borne Relay Transceiver. Operating frequencies: 19.4 and 27.0 kHz, modulation: 50 baud FSK, power output: 1 kW. Configuration: exciter, PWM class D parallel push-pull FET power amplifier, matching network, antenna.Initiator and Presenter of IRAD Project as Principal Investigator for "RF / Microwave Losses of High Temperature Superconductors". Produced technical proposal and cost estimate with budget and schedule, planned research laboratory, developed experimental procedures.Designer of BERT Unit for VLF (19.4 and 27.0 kHz) Transmitter Section of Tactical Balloon-borne Relay Transceiver. Tested by measuring BER of received 63 bit PN data. Design used sequential and combinational TTL logic.Performance Analyst of Aircraft Communication Antenna Using Friis Propagation Equation. Antenna pattern based on 1/10 size aircraft scale model and 10-X frequency RF signal source in anechoic chamber.Coder of BASIC and Assembly Software for Data Analysis, Operating System / Test Algorithm and Performance Assessment of Vendor EDM Systems for JTIDS Program.