Correct timing of sample-and-hold system improves leveling performance
Abstract
A problem common to many systems using solid-state pulse modulators is the difference between the turn-on and turn-off times of the modulators. This difference, which may be 25 ns or more, usually results in an RF pulse that is either narrower or wider than the control pulse. A novel method, termed sample-and-hold technique, is presented. In this technique, a compression or expansion of the RF pulse is eliminated by allowing a sample pulse of the same width as the RF pulse. A device using this technique is described; it produces RF pulses at frequencies from 10 MHz to 18 GHz, inclusive, with width and delay variations of less than + or - 10 ns from +15 to +35 C.
- Publication:
-
Microwave Journal
- Pub Date:
- May 1987
- Bibcode:
- 1987MiJo...30..325R
- Keywords:
-
- Electromagnetic Pulses;
- Gates (Circuits);
- Microwave Equipment;
- Pulse Duration Modulation;
- Pulse Modulation;
- Radio Equipment;
- Pulse Time Modulation;
- Sampling;
- Solid State Devices;
- Electronics and Electrical Engineering