L Stuart, Inc.
L Stuart, Inc.
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    • Home
    • Engineering Services
    • Intellectual Property
    • Programs and Projects
    • Training
    • Capabilities in Brief

  • Home
  • Engineering Services
  • Intellectual Property
  • Programs and Projects
  • Training
  • Capabilities in Brief

Successful Sample Projects

Solutions

We have a long history of helping customers and clients solve their most difficult challenges. We can successfully work with your new designs, upgrading and modernization of your existing systems, and using modern solutions to solve your obsolescence issues without major performance disruption. 

Components and Systems Engineering

  • Electronically variable delay line for a long-range, high power phased array RADAR
  • Low phase noise, precision, Ku-band up, down and integrated loop-back test converters for a satellite earth station
  • Switched tri-channel downconverter pre-amplifier multi-function assembly for a naval landing system
  • RF signal power divider for an extraterrestrial spacecraft landing system
  • Precisely controlled rise and fall time PIN diode switches for a pulse shaping application
  • Ku-Band High Power RF Signal Limiter
  • 1–18 GHz Comb Generator Frequency Multiplier
  • LO Frequency Multiplier
  • Bi-Phase Modulators
  • 27 GHz to 31 GHz Communications Band Signal Distribution Products
  • IQ Modulator, Signal Processing and Control Products
  • Second-Order Phase Distortion Equalizers
  • Fiber Optic Link Characterization
  • Selected special satellite earth station Upconverter and Downconverter systems projects
  • FM/FDM Airborne Telemetry Transmitter
  • S-Band Frequency Synthesizer
  • Very Low Phase Noise, Microwave Tunable Phase-Locked Loop Sources
  • Solid State Power Amplifiers
  • RF and microwave receiving systems
  • Airborne IF Processor System
  • Low Noise Phase-Locked Voltage Controlled Oscillators for satellite ground stations
  • High Stability Crystal Oscillators
  • RF and Video Amplifiers  

Microwave Signal Control

  • PIN diode based high power switches, high dynamic range attenuators and phase shifters
  • Microwave integrated assemblies
    • Operating frequencies from 5 MHz to 40 GHz 
    • RF input power from small signal to 3.5 kW
    • Switches with integrated couplers, amplifiers, filters and RF power detectors
  • Spaceflight components
    • Microwave switches
    • Precision amplifiers with integrated filters to 0.1 dB passband flatness
    • Tunnel diode detectors
    • RF power dividers
  • Other Devices
    • Electronically variable X-band delay line
    • 2–18 GHz airborne integrated receiver front end
    • Digitally controlled PIN diode attenuators and switches
    • High speed high dynamic range PIN diode products
    • Microwave filter design
    • High-power limiters

Wideband Frequency Converter Systems

  •   0.5 – 40 GHz RF Signal Input Wideband Downconverters 
    • 500 MHz Bandwidths
    • 2 Hz Step Resolution 
    • Standard 19” Rack-Mount
    • Outdoor Weather-Sealed
  • Redundant Switchover Units 
  • Low Noise Amplifiers and Power Amplifiers with Fiber Optic Connectivity

Market Segments

  • Military Systems
    • Ground based
    • Airborne
    • Naval
    • Space Flight Platforms
  • Commercial Infrastructure
    • Ground Based and Satellite Interface
    • Airborne Connectivity

Modernization of Obsolete RF, Microwave and Electronics Assemblies

  • Analysis and evaluation of obsolete microwave components and assemblies
  • Updating of requirements and specifications
  • Coordination with systems integrator for minimal integration disruptions
  • Synthesis of complete design replacement utilizing modern techniques and materials
  • Design and performance of Verification and Validation testing

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