Title :
Generation of Gaussian-like electromagnetic pulses
Author :
How, Hoton ; Thaxter, J. Bruce ; Vittoria, Carmine
Author_Institution :
Dept. of Electr. & Comput. Eng., Northeastern Univ., Boston, MA, USA
fDate :
1/1/1994 12:00:00 AM
Abstract :
Electromagnetic pulses generated via the use of photodiodes are inevitably a composite of exponential decay transients due to the finite lifetime of the charge carriers and RC relaxation times of the triggering circuit. We have developed a microwave technique in which the limiting factor of the pulse lineshape is governed by the coupling between a slot and microstrip transmission line instead of exponential transients. The coupling involves the overlap of these two lines in which one line launches the pulse and the other receives it. We have measured mostly electromagnetic pulses with Gaussian lineshape in agreement with our calculations. The formulation of the calculation involves a Lagrangian description of the coupling between these two lines
Keywords :
electromagnetic pulse; microstrip components; pulse generators; waveguide couplers; Gaussian lineshape; Gaussian-like electromagnetic pulse generation; Lagrangian description; exponential decay transients; microwave technique; pulse launch; pulse lineshape; pulse receiver; slot-microstrip junction; slot/microstrip transmission line coupling; Charge carriers; Coupling circuits; EMP radiation effects; Electromagnetic transients; Gaussian processes; Photodiodes; Power system transients; Pulse circuits; Pulse generation; Pulse measurements;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
