The Weinschel 1805A is a coaxial fixed attenuator engineered for precision RF and microwave attenuation across DC to 18 GHz. Built for laboratory, test, and measurement environments demanding high reliability and long-term stability, this 50 Ohm device delivers consistent performance through its robust stainless steel construction and rugged injection-molded connectors.
– Technical Specifications
• Frequency Range: DC to 18 GHz
• Nominal Impedance: 50 Ohms
• VSWR: Typically 1.25:1 to 1.30:1 maximum within specified frequency range (varies with frequency)
• Temperature Coefficient: Less than 0.0004 dB/dB/°C
• Power Coefficient: Less than 0.005 dB/dB/W
• Operating Temperature: −55°C to +125°C
• Connector Type: Type-N (MIL-PRF-39012 and MIL-STD-348 interface dimensions)
– Key Features
• Passivated stainless steel body for corrosion resistance
• High accuracy and repeatability across large attenuation ranges
• Minimal frequency-dependent performance variation
• Temperature and power coefficient stability suitable for precision applications
• Environmental design compliance with MIL-DTL-3933 specifications
– Typical Applications
• Signal conditioning and level control in RF/microwave test systems
• Laboratory measurement and characterization setups
• Impedance matching and signal isolation circuits
• Attenuation calibration and reference standards
– Compatibility & Integration
The 1805A complies with MIL-I-45208, MIL-Q-9858, MIL-C-45662, MIL-DTL-3933, MIL-PRF-39012, MIL-STD-348, and IEEE-STD-287. Standard Type-N connectors enable direct integration into 50 Ohm coaxial systems. Weinschel (now part of Spectrum Control) manufactures the 1805A in multiple attenuation values including 1, 3, 6, 10, 20, and 30 dB configurations.
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