Keysight 346A Noise Source

Overview

The Keysight 346A is a broadband noise source designed for noise figure measurements and characterization of low-noise amplifiers and RF devices. Operating across 10 MHz to 18 GHz with 6 dB excess noise ratio (ENR) and exceptionally low standing wave ratio (SWR), it provides precise, individually calibrated noise for accurate measurement of input-impedance-sensitive devices such as GaAsFETs and UHF amplifiers.

Key Features

• Broadband operation from 10 MHz to 18 GHz
• 6 dB excess noise ratio (ENR) at calibrated frequencies
• VSWR less than 1.3:1 for minimal measurement uncertainty
• Very small reflection coefficient change (<0.01) from ON to OFF state
• Low SWR minimizes signal reflection and measurement errors
• Individually calibrated ENR values at specific frequencies
• BNC (female) input for bias control and 3.5 mm (male) RF connector
• Optimized for input-impedance-sensitive device characterization

Applications

• Noise figure measurement systems
• Low-noise amplifier characterization and testing
• GaAsFET and UHF amplifier evaluation
• RF and microwave receiver sensitivity testing
• Broadband noise characterization from 10 MHz to 18 GHz