The Amplifier Research DC7144 is a dual directional coupler for simultaneous forward and reflected power monitoring across medium-power RF systems. Engineered for laboratory and field testing environments, it couples power amplifiers to measurement instruments—power meters, spectrum analyzers, oscilloscopes, and voltmeters—while maintaining low insertion loss and high directivity. The coupler excels in RF susceptibility testing, amplifier overdrive protection, and load management applications where signal integrity and measurement accuracy are critical.
Technical Specifications
• Frequency Range: 0.7 GHz to 4.2 GHz
• Power Handling: 400 W continuous wave; 4,000 W peak @ 5% duty cycle, 30 µs pulse
• Coupling Factor: 40 dB ± 1.3 dB
• Insertion Loss: 0.4 dB maximum
• Directivity: 15 dB minimum, 19 dB typical
• Flatness: 0.5 dB maximum
• VSWR: 1.25:1 maximum
• Impedance (Main Line): 50 ohms
• Connectors: N-type (male input, female output)
– Key Features
• Dual-directional design enables concurrent measurement of forward and reflected power
• Low insertion loss preserves signal fidelity in high-power test circuits
• Minimum 15 dB directivity isolates incident from reflected signals
• Flat frequency response across the 0.7–4.2 GHz band supports multiband testing
• Handles peak transients to 4 kW with <5% duty cycle specifications
– Typical Applications
• RF susceptibility and immunity testing with amplifier overdrive monitoring
• Field-level signal management and control in test environments
• Load protection through reflected power detection and feedback
• Integration with power measurement systems for real-time amplifier performance assessment
– Compatibility & Integration
Optimized for use with Amplifier Research S-series microwave power amplifiers and compatible with the AR PM2002 and PM2003 power meters. Suitable for integration with any amplifier operating within the specified 0.7–4.2 GHz frequency and 400 W CW power envelope.
