The Narda 3042B is a fixed coaxial RF directional coupler engineered for precise power sampling and signal monitoring in RF and microwave systems. Available in three coupling values—10 dB, 20 dB, and 30 dB—the 3042B series delivers consistent performance across 920 MHz to 2.2 GHz with excellent directivity and low insertion loss. These couplers operate with ±0.5 dB coupling variation and ±0.25 dB frequency sensitivity, ensuring accurate power division in demanding applications.
Technical Specifications
• Frequency Range: 920 MHz to 2.2 GHz
• Nominal Coupling Values: 10 dB, 20 dB, 30 dB
• Coupling Variation: ±0.5 dB
• Frequency Sensitivity: ±0.25 dB
• Directivity: 20 dB
• Insertion Loss: 0.20 dB (3042B-10, 3042B-30); 0.25 dB (3042B-20)
• True Insertion Loss: 0.70 dB (3042B-10); 0.20 dB (3042B-20, 3042B-30)
• Primary Line VSWR: 1.10:1
• Secondary Line VSWR: 1.20:1
• Peak Power: 10 kW
• Incident Power: 200 W (3042B-10, 3042B-20, 3042B-30); 500 W (3042B-20, 3042B-30)
• Average Power: 50 W (guaranteed with 1.2:1 source and load VSWR)
• Calibration Frequencies: 0.92, 1.24, 1.50, 1.88, 2.2 GHz
• Absolute Calibration Accuracy: ±0.1 dB per 10 dB step
• Connectors: Type N (male and female configurations)
• Weight: 0.60 kg (3042B-20, 3042B-30)
– Key Features
• High peak power handling to 10 kW
• Low insertion loss across operating band
• Superior directivity for accurate coupled signal extraction
• Permanent nameplate calibrations at five discrete frequencies
• Commercial and military grade availability
– Typical Applications
• Incident and reflected power monitoring
• RF power measurement
• System signal sampling
• Microwave test and measurement integration
– Compatibility & Integration
Designed for direct integration into standard RF and microwave systems requiring precise power division. Type N connectors support both male and female configurations for flexible system matching.
