The Logimetrics A340 is a Traveling Wave Tube (TWT) RF power amplifier engineered for high-power applications demanding excellent linearity and stable performance across broad frequency ranges. It delivers consistent output in EMC testing, communications systems, and research environments. The A340 series operates in a full-rack 5.25″ form factor with internal forced-air cooling and comprehensive protection circuitry.
Technical Specifications
Electrical Performance
• Power Output: 15 W (model-dependent; saturated power capability exceeds +3 dB above rated output)
• Frequency Range: 1.0–2.0 GHz, 2.0–4.0 GHz, 4.0–8.0 GHz, or 18.0–40.0 GHz (model-dependent)
• Gain: Minimum 33 dB
• Noise Figure: Maximum 35 dB (comparable models)
Interfaces & Control
• IEEE-488 GPIB remote control with T, L, SH, AH interface functions
• Front-panel push-button operation mode selection
• LED digital display for mode indication, power supply voltages, currents, and fault status
Physical & Mechanical
• Form Factor: Full Rack, 5.25″ height
• Input Connector: Type N (≤8 GHz) or Type SMA (>8 GHz)
• Output Connector: Type N (≤8 GHz) or Waveguide (>8 GHz)
• Cooling: Internal forced air
Power-Up & Protection
• 120-second countdown to standby mode before RF enable
• TWT protection against helix overcurrent and excessive duty cycle
• Regulated helix, filament, and grid power supplies for extended tube life
– Key Features
• Multiple frequency band configurations support diverse test scenarios
• Gain stability and linear amplification across operating bandwidth
• Remote programmability via standard GPIB interface
• Real-time fault monitoring and power supply status visibility
• Automatic TWT safeguards prevent premature tube degradation
– Typical Applications
• EMC susceptibility testing
• Communications system amplification
• General laboratory instrumentation
• System-level RF amplification
• Research and development environments
– Compatibility & Integration
The A340 series integrates into existing test systems via IEEE-488 GPIB connectivity. Multiple frequency bands enable deployment across L-band through millimeter-wave applications. Standard RF connectors (Type N, SMA, Waveguide) accommodate varied test configurations.
