<title>Shaping of the sampling pulse using step recovery diode</title>

<title>SRD-based multistage circuit for shaping picosecond pulses</title>

“…It should be also mentioned, that -unlike most devices used in pulse techniquestep recovery diode may be used for generation of pulses with large amplitude (even 300V -as reported in [3]), which makes it very attractive device for a variety of applications. Both phases of SRD switching off are used for shaping short pulses required by example in sampling circuits constituting a front-end of any time-domain measurement system: current waveform creates a rectangle-type pulse of width equal to t d and one slope with transition time t t, (second slope -if important -may be formed in a separate circuits part [4]) while SRD voltage is used for shaping fast step pulses -which is the main subject of this paper. Basic diagram of SRD-based voltage step generator is shown in Fig.…”

<title>Temperature compensation of step recovery diode in fast sampling circuits</title>

“…Bandwidth of the measurement system depends mostly on speed of switching elements in sampling gate (usually Schottky diodes) and width of sampling pulses, while system stability requires sampling pulses symmetry and their delay stability. The device commonly used for sampling pulses generation is Step Recovery Diode (SRD) [1], due to its specific switching off (long delay time t d and very short transition time t t [2]) and the ability to deliver pulses with large amplitude [3]. Unfortunately SRD-generated time waveforms are sensitive to temperature.…”