Description
Long cables, fixtures and switch paths eat signal at microwave frequencies. The Keysight 87415A microwave amplifier wins that power back. It is a compact system amplifier for 2 to 8 GHz, with more than 25 dB of gain and an output 1 dB compression point above 23 dBm.
Key numbers
- Frequency range: 2 to 8 GHz.
- Gain: more than 25 dB.
- Output P1dB: more than 23 dBm.
- Noise figure: under 13 dB, typical.
- RF connectors: 2.4 mm female.
- Bias: +12 V at 900 mA.
Jobs for the Keysight 87415A microwave amplifier
Most users place it where loss hurts the most. For example, it can sit after a source to make up for a long run to a fixture. It also raises stimulus power for component and receiver tests. In addition, rack and production systems use it to hold a steady level at a distant test port.
However, it is a power stage, not a low-noise front end. With a typical noise figure under 13 dB, it suits stimulus and loss-compensation paths better than the most sensitive receive chains.
Powering the amplifier
The unit needs +12 V at 900 mA. The listing pairs it with the Keysight 87421A bias supply, which connects to the DC BIAS socket on the end panel. So budget for that supply if your bench does not have one yet.
Handling advice
The finned top works as a heat sink, so leave air space around it. Also note the ESD warning next to the RF input. Ground yourself before you touch the connector, and use a torque wrench on the 2.4 mm interface. Then check the drive level, because too much input pushes any amplifier into compression.
Rent it or buy it
A short integration project or a one-off validation suits a rental. A fixed test station, on the other hand, suits ownership. Lost in HCM handles both and arranges service on request, while SMK Vietnam only lists the part. Share your band, input level and bias setup, then request a quote from Lost in HCM for the Keysight 87415A microwave amplifier. You can also compare other RF and microwave accessories, check the Keysight website, or contact SMK Vietnam.
87415A FAQ
Does the 87415A need its own bias supply?
Yes. It runs on +12 V at 900 mA, and the listing names the Keysight 87421A as a compatible source.
Is it a good pick for weak-signal work?
Its strength lies in gain and output power. For the faintest signals, a dedicated low-noise preamplifier usually serves better.
Which RF connectors does it use?
The listing gives 2.4 mm female RF connectors. So plan adapters if your cables use another series.
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