Recent investigations into W-band pulsed IMPATT oscillator design

The author reports on some of the experimental techniques used and results achieved during development work on W-band pulsed IMPATT oscillators. The particular application of these sources was to form an injection locked amplifier chain as part of a frequency agile data gathering radar. The oscillators were based on a modular waveguide cavity allowing for ease of construction and interchangeability. Diodes were silicon double-drift devices and were nominally centred on 94 GHz with various output powers between 1 W and 10 W.<>