Power Amplification

Microwave vacuum tubes
- Magnetron
  - First, smaller, easiest for aircraft
- Klystron
  - Higher power, amplifier
  - Allows more complex waveforms
- Traveling Wave Tube (TWT)
  - Wider bandwidth than klystron
- Crossed-Field Amplifier (CFA)
  - Wide bandwidth, modest gain, compact size

Solid state devices
- Research in progress

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Notes:

The heart of the radar, and a very expensive component that has to be taken care of.