Title :
A Reflector Antenna for Focusing Subnanosecond Pulses in the Near Field
Author :
Xiao, Shu ; Altunc, Serhat ; Kumar, Prashanth ; Baum, Carl E. ; Schoenbach, Karl H.
Author_Institution :
Dept. of Electr. & Comput. Eng., Old Dominion Univ., Norfolk, VA, USA
fDate :
7/2/1905 12:00:00 AM
Abstract :
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.
Keywords :
antenna theory; electromagnetic waves; reflector antennas; transmission lines; full-width at half-maximum width; nanosecond pulsed electromagnetic radiation; power density distribution; prolate-spheroidal reflector antenna; reflector antenna; size 10 cm; size 32 cm; transmission lines; Focusing; impulse radiating antennas (IRAs); near field; prolate spheroidal reflector; subnanosecond pulse;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2010.2041027
