Agilent/Keysight 8349A

The Agilent/Keysight 8349A is a broadband microwave amplifier delivering consistent gain and leveled output power across 2 to 20 GHz. Built on a multi-stage GaAs FET architecture, It has minimum 15 dB small-signal gain with 80 mW leveled output power and ±1.25 dB flatness from 2 to 18.6 GHz, typically extending to 20 GHz. The amplifier achieves a 1 dB compression point of +21 dBm nominal and third-order intercept of +33 dBm nominal, making it suitable for dynamic range extension and signal boosting in test and measurement systems.

Noise figure remains below 13 dB typical. Fast pulse transmission capability - rise/fall time under 10 ns and input-to-output delay under 8 ns - supports pulsed signal applications. Harmonics are controlled to -30 to -20 dBc across the band, with non-harmonic spurious content at -55 dBc or better.

Technical Specifications

• Frequency Range: 2 to 20 GHz


• Gain: >15 dB (full band); minimum 15 dB small signal at -5 dBm input


• Output Power (Leveled): 80 mW (+19 dBm), 2 to 18.6 GHz, typically to 20 GHz


• Output Power (Unleveled): 100 mW (+20 dBm)


• Power Flatness (Leveled): ±1.25 dB


• 1 dB Compression Point: +21 dBm nominal


• Noise Figure: <13 dB typical


• Third Order Intercept: +33 dBm nominal


• Input SWR: ≤2.8


• Output SWR (Leveled): ≤2.5


• Maximum Input Power: +27 dBm RF; ±10 V DC


• Harmonics: -20 dBc or better (2.0 to <11.0 GHz at +20 dBm output); -30 dBc or better (11.0 to 20.0 GHz at +20 dBm output)


• Non-Harmonic Spurious: ≤-55 dBc


• Pulse Rise/Fall Time: <10 ns typical


• Pulse Delay (Input to Output): <8 ns typical


• RF Connectors: Type N female


• Dimensions: 133 mm (H) × 214 mm (W) × 366 mm (D)


• Weight: 7 kg net; 14 kg shipping

Key Features

• Multi-stage GaAs FET design for wide-band amplification


• Leveled output maintains power flatness across frequency sweep


• Low harmonics and spurious performance


• Fast pulse response for time-domain measurements

Typical Applications

• Signal boosting in test and measurement setups


• Scalar network analyzer dynamic range extension


• RFI susceptibility testing


• Antenna efficiency and pattern measurements


• Use with fixed or swept frequency sources

Compatibility & Integration Designed for interfacing with HP microwave sources including 8350 or 8620C sweep oscillators, 8340A/8341A synthesized sweepers, and 8672A or 8673 synthesized signal generators. Compatible with HP 8755C, 8736A, and 8757A scalar network analyzers when used with sweep oscillators for extended measurement capability.