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87405B Preamplifier, 10 MHz to 4 GHz

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Starting From US$ 2,736

Typical Configuration  

Typical Configuration

87405B Preamplifier, 0.01-4 GHz, 22dB Gain, Type-N (m) Output to Type-N (f)

  • 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

  • 22 dB gain
  • 8 dBm output power
  • 5 dB noise figure

Bias Option

  • DC Bias Volt/Amp: +15 V at 80 mA
  • Compact size, integral bias regulation


Preamplifiers and System Noise Figure Application Note – This note discusses noise figure basics including applications and characteristics of Keysight’s amplifier technology. Highlighted are Keysight’s 87405C portable preamplifiers that provide an exceptional gain of 25 dB up to 18 GHz and a probe-power bias connection which eliminates the need for an additional DC power supply.  Read the Preamplifiers and System Noise Figure Application Note now!

The Keysight 87405B microwave component amplifier brings compact, reliable gain block performance to systems integrators and microwave designers. With 22 dB minimum gain block and over 8 dBm output power, this amplifier offers output power where it is needed: at the test port.

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