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

Volume

9

fYear

2010

fDate

7/2/1905 12:00:00 AM

Firstpage

12

Lastpage

15

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;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2010.2041027

Filename

5395647