Robert Evans Email & Phone Number

Princeton Nj

RF/Microwave/IF design, test, & automation -Analog & Digital signal sensing & processing circuit designFortran, Pascal, C, PERL, LabVIEW Modeling Applications: Agilent Advanced Design Suite, AutoCADRepresentative AssignmentsPrototype robotics for automatic alignment of I.F. circuits (AGC, AFT, & tuned) for the assembly line.Multi-conversion system receiver prototypes.X-band receiver with ultra wide-band I/Q demodulator Low consumer cost synthesized 1.4 to 2.4 GHz hyper-abrupt varactor tuned oscillator Operating microwave satellite link for first demonstration & test of DTV & MPEG4Operating Klystrode transmitter for demonstration & test of dual QAM HDTVRF tag transponders and interrogation systemsAntenna design & characterization for telecomm and RF ID (gain, G/T, pattern, frequency squint)30 to 520 MHz double conversion agile 1.8GHz IF dual synthesis variable BW receiver1.2 to 2.8 GHz & 30MHz to 1000MHz Silicon Carbide MESFET Power Amplifiers400 to 2500 MHz GaN HEMT Power AmplifierCharacterization and support of radar and microwave network communications equipment for surveillanceAutomated measurement systems• Television/cable receiver tuners and statistics of performance variations• SAW filters for statistical analysis of phase and group delay response• Nth order distortion & a generalized approach to triple-beat/cross-modulation measurement• Two-Tone IMD swept frequency for characterization of broadband PA’s• noise figure circle measurement and modeling system employing a programmable double-slug tuner for presenting impedances and novel conditionally stable LNA design • lifetest and control electronics of Fiber optic lasers and pumped fiber amplifiers• phase noise measurement of spectral speading in microwave modulation of diode laser.• Power added efficiency with source and load pull for minimal distortion of complex waveforms.• calibrated spectroscopy system for characterization of QE of TPV cells.

“Intermodulation Products: Prediction and Measurement,” (sole author),ARFTG Microwaves & RF“Agile IF for a Double Conversion Tuner,” (co-author)“Mprogram - derivation of Network Impedance Transformation Circuits from ReflCoefs,” (sole author)“Net-Automated Calibration and Measurement of Two-Port Networks over power sweep” (co-author)“Method for tuning a filter circuit,” 4272743“Multiplexing arrangement for a plurality of Voltage controlled filters,” 4368541“Pre-tuner tracking traps response to a tuning voltage,” 4361019“Tuning system for a multi-band television receiver,” 4418428“Antenna design for high cross-pole,” 5293175“Stacked dipole MMDS feed system,” 5229782“Manchester code/decode approach,” 6064705, 6452980 & pending Sarnoff #12165“Encoding And Decoding System,” 6885716