The Agilent/Keysight 909A is a precision 50 Ω coaxial termination engineered for accurate impedance matching across DC to 18 GHz. It delivers low-reflection signal termination in broadband and narrowband RF and microwave test systems, with reflection coefficients as low as 0.024 at 4 GHz (APC-7) and maximum SWR of 1.05 in that band.
Technical Specifications
Frequency Range: DC to 18 GHz
Impedance: 50 Ω
Connector Options: APC-7 (sexless, low RF leakage) or Type-N (male/female, MIL-C-39012 compatible, stainless steel)
Physical: 51 mm length, 0.6 lbs
– Key Features
Reflection Performance
• APC-7: SWR 1.05 at 4 GHz, 1.10 at 12.4 GHz, 1.25 at 18 GHz
• Type-N: SWR 1.06 at 4 GHz, 1.11 at 12.4 GHz, 1.30 at 18 GHz
Power Handling
• 2 W average; 300 W peak (or 100 W peak with 10 ps max pulse width at 20 °C)
Environmental Ratings
• Operating: +15 °C to +35 °C, non-condensing humidity to 80 %
• Storage: −40 °C to +75 °C, humidity to 95 %; altitude to 15,000 m
• Shock: 100 g (1–2 ms, 3 axes)
• Vibration: 0.015″ displacement, 5–55 Hz
– Typical Applications
Microwave and RF test setups, system calibration, signal termination in broadband measurement chains, and narrowband instrumentation integration.
– Compatibility & Integration
Designed for use with coaxial instrumentation and broadband/narrowband measuring instruments. Both APC-7 and Type-N variants support field integration without additional adapters (APC-7) or with standard MIL-spec connectors.
