Abstract
A research on the electric characteristic of step recovery diode (SRD) excited by square wave was done in depth. SRD was modeled as the parallel connection of a pn diode and a junction varactor. The model of the junction varactor is based on the tested data from the SRD characteristics. The junction varactor is fitted by three linear junction varactors. A method of generating ultra-wideband (UWB) monocycle short pulse based on SRD and Schottky diode was proposed. The operation theory of this method was analyzed theoretically and simulated in ADS. Novel UWB radar transmitter was developed. Through testing the pulse width of monocycle pulse 400 ps, and the amplitude of peak-to-peak was 15 V. The test result is coincident with the simulated result, which proves the veracity of the SRD model and the analysis on short pulse generation circuit.
| Original language | English |
|---|---|
| Pages (from-to) | 240-243 |
| Number of pages | 4 |
| Journal | Binggong Xuebao/Acta Armamentarii |
| Volume | 29 |
| Issue number | 2 |
| Publication status | Published - Feb 2008 |
Keywords
- Monocycle short pulse
- Radar engineering
- SRD
- Transmitter
- UWB