The Varian CPI VZM6991K3 is a high-power Traveling Wave Tube (TWT) amplifier engineered for radar systems, communication equipment, and test environments requiring stable RF power amplification across an extended bandwidth. This all-metal-ceramic TWT delivers 20 watts of rated output power with 40 dB gain across the 8 to 18 GHz band, making it suitable for demanding industrial and scientific applications.
– Technical Specifications
• Frequency Range: 8 GHz to 18 GHz
• Rated Output Power: 20 Watts
• Power Gain: 40 dB
• Output Connector: Type N
• Input VSWR: 2.0:1 typical
• Output VSWR: 2.0:1 typical
• Load VSWR: 1.3:1 maximum (full spec compliance); 2.0:1 maximum (no damage)
• Harmonic Content: -3 dBc at lower band edge, -15 dBc typical at upper band edge (without optional filter); -20 dBc for P-Band models
• Noise and Spurious: -50 dBc typical (excluding harmonics and residual modulation)
• Residual AM: -40 dBc
• Residual FM: 41,000 hours (calculated, 6900K series)
– Key Features
• All-metal-ceramic tube construction for high power density and wide bandwidth
• Type N output connector for standard RF cable compatibility
• Predictable harmonic performance with optional filtering available
• Low residual modulation suitable for precision measurement and test applications
• Extended operational life with demonstrated reliability across the 6900K series
– Typical Applications
• Radar systems
• Communication equipment
• Medical devices
• Test and measurement
• Antenna range testing
• EMC chamber testing
• RTCA DO-160 compliance testing
• MIL-STD-461 RS 103 applications
– Compatibility & Integration
The VZM6991K3 integrates into systems via its Type N output connector, which provides broad compatibility with standard RF cabling and components. System integration of interface requirements, power supply voltage, and control signaling specifications.
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