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A Reflector Antenna for Focusing Subnanosecond Pulses in the Near Field

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5 Author(s)
Shu Xiao ; Dept. of Electr. & Comput. Eng., Old Dominion Univ., Norfolk, VA, USA ; Altunc, S. ; Kumar, P. ; Baum, C.E.
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A prolate-spheroidal reflector antenna focusing subnanosecond pulsed electromagnetic radiation in the near field is studied. This antenna reflector is fed by a pair of balanced, conical-plate transmission lines and the radiated pulse consists of a prepulse, an impulse, and a postpulse. Whereas the prepulse amplitude decreases inversely with distance, the impulse is maximum near the geometric focus, and its power density distribution has a full-width at half-maximum (FWHM) width of 32 cm in the axial direction and 10 cm in the lateral direction.

Published in:

Antennas and Wireless Propagation Letters, IEEE  (Volume:9 )