Narda 25288B

The Narda 25288B is a directional coupler engineered for precise signal control across the RF and microwave spectrum. Operating from 1.7 GHz to 26.5 GHz with −16 dB coupling and 1.2 dB typical insertion loss, it delivers reliable performance in test, aerospace, and telecommunications environments where accurate signal attenuation and measurement are essential.

– Technical Specifications

• Frequency Range: 1.7 GHz to 26.5 GHz
• Coupling Degree: −16 dB
• Insertion Loss: 1.2 dB (typical)
• Average Power Rating: 20 W
• Connector Options: SMA (female) or 3.5 mm (female)

– Key Features

• Broad frequency coverage spanning 1.7–26.5 GHz enables use across L-, S-, C-, X-, Ku-, and K-band applications
• Fixed −16 dB coupling provides consistent signal division and sampling
• Low insertion loss minimizes signal degradation in signal path
• Dual connector options (SMA and 3.5 mm) support integration into existing test systems
• Rated for 20 W average power handling
• Designed to MIL-A-3933 environmental standards, with operating temperature range of −54°C to +105°C and storage to −55°C to +125°C
• Meets MIL-STD-202F qualification for humidity, shock, vibration, altitude, and thermal cycling

– Typical Applications

• RF and microwave system signal monitoring and control
• Test and measurement setups requiring stable directional coupling
• Aerospace systems demanding reliability across wide temperature and environmental extremes
• Telecommunications networks and signal distribution architectures

– Compatibility & Integration

The 25288B integrates into systems using standard SMA or 3.5 mm connectors. Its fixed attenuation value and frequency range make it suitable for permanent installation or bench-level test configurations in labs and field environments.