The Agilent/Keysight 11576A is a high-performance test fixture designed for impedance measurements and S-parameter characterization across the 100 kHz to 200 MHz frequency range. It provides a precision interface between network analyzers, LCR meters, and impedance measurement instruments and the device under test, delivering <±0.5 dB magnitude and 20 dB return loss
Output Ports (A, B, R): 50 Ω Type N female
Insertion Loss:
• RF Input to Test Ports (35677A): Typically 13 dB
• RF Input to Test Ports (35677B): Typically 19 dB
• RF Input to Output Ports (35677A): Typically 19 dB
• RF Input to Output Ports (35677B): Typically 31 dB
Return Loss (Test Ports):
• HP 35677A: >26 dB
• HP 35677B: >24 dB
RF Input Levels:
• Maximum Operating Level: +25 dBm or ±30 Vdc
• Damage Level: ±27 dBm or ±30 Vdc
DC Bias (BNC female, rear panel):
• Range: +30 Vdc, ±20 mA typical
• Damage Level: 200 mA
– Key Features
Measurement Performance:
• S11, S22 reflection and S21, S12 transmission: <±0.5 dB magnitude, <±5° phase
• Incident Power Ratio (Port 1 to Port 2): Typically <±1.5 dB
• Directivity: 40 dB
Dual-Configuration Design: Supports both 50 Ω (35677A) and 75 Ω (35677B) impedance systems with optimized insertion loss characteristics for each.
– Typical Applications
• Component impedance characterization
• Reflection and transmission coefficient measurement
• Device-under-test interface for network analysis
• General-purpose RF testing
– Compatibility & Integration
The 11576A integrates with HP/Keysight network analyzers including the HP 3577A, and supports LCR meters, impedance analyzers, and combination impedance measurement instruments.
Physical: 6 kg net; 90 mm H × 425 mm W × 22.75 inches depth (add 1.5 inches for connectors).
