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Starting From US$ 1,069

Typical Configuration  

Typical Configuration

8490G Coaxial Fixed Attenuator, DC- 67 GHz

  • 8490G-040 40 dB attenuator
  • R-51B-001-C Return to Keysight Warranty - 1 year


Prices for: United States

* Prices are subject to change without notice. Prices shown are Manufacturer's Suggested Retail Prices (MSRP). Prices shown are exclusive of taxes.

Key Features & Specifications

Superior RF Performance

  • Frequency range: DC to 67 GHz
  • Maximum SWR (except 40 dB): 1.15 to 26.5 GHz, 1.25 to 40 GHz, 1.45 to 67 GHz
  • Maximum SWR (40 dB attenuator): 1.10 to 26.5 GHz, 1.15 to 40 GHz, 1.25 to 67 GHz

Power handling

  • Maximum input power: 1 W (average)


  • Connector: 1.85 mm


Keysight’s 8490G precision coaxial fixed attenuators maximize your operating frequency range up to 67 GHz by providing industry-leading attenuation accuracy, coupled with low SWR and a variety of attenuation options to suit your application needs. The attenuator is available in attenuations of 3, 6, 10, 20, 30 and 40 dB. The 8490G is swept-frequency tested to ensure it meets specifications at all frequencies.

For more information about fixed rf attenuators, please visit Attenuators, Fixed.