Broadband pulse-optimised antenna
Abstract
The theoretical far-field pattern, gain, and aperture are derived for a V-shaped dipole carrying a nonuniform current wave. Particular attention is given to broadening in the far field of a sharp current pulse applied at the input. The optimum variation of characteristic TEM wave impedance is then derived with the reflection coefficient and pulse broadening as constraints. Measurements on a practical design of 70 cm length show a bandwidth from 200 MHz to 1.6 GHz for an input voltage reflection coefficient less than 0.1 and a pulse broadening of 35 psec. The directional diagram is + or - 25 deg to half power
- Publication:
-
IEE Proceedings H: Microwaves Optics and Antennas
- Pub Date:
- June 1981
- Bibcode:
- 1981IPMOA.128..124T
- Keywords:
-
- Antenna Design;
- Antenna Radiation Patterns;
- Broadband;
- Electric Pulses;
- Far Fields;
- Microwave Antennas;
- Electrical Impedance;
- Optimization;
- Power Gain;
- Pulse Duration;
- Spectral Reflectance;
- Traveling Waves;
- Electronics and Electrical Engineering