Step recovery diode
A step recovery diode (SRD) aka snap-off diode is a semiconductor junction diode having the ability to generate extremely short pulses. It is also called a or a charge-storage diode, and has a variety of uses in microwave electronics as pulse generator or parametric amplifier.
When diodes switch from forward conduction to reverse cut-off, a reverse current flows briefly as stored charge is removed.
In SRDs, doping levels are gradually reduced towards the PN junction to maximize the abruptness with which the reverse current ceases.
- Wikipedia: Step recovery diode
- Patent US 3337779A
- HP Application Note 913 – Step Recovery Diode Frequency Multiplier Design (1967)
- HP Application Note 918 – Pulse and Waveform Generation with Step Recovery Diodes (1967)
- HP Application Note 920 – Harmonic Generation Using Step Recovery Diodes and SRD Modules (1968)
Tek products using SRDs
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