CST – Computer Simulation Technology

A Reflector Antenna for Focusing Subnanosecond Pulses in the Near Field

Title:
A Reflector Antenna for Focusing Subnanosecond Pulses in the Near Field
Author(s):
Shu Xiao, Serhat Altunc, Prashanth Kumar, Carl E. Baum, Karl H. Schoenbach
Source:
IEEE Antennas and Wireless Propagation Letters
Vol./Issue/Date:
Volume: 9, 2010
Year:
2010
Page(s):
12 - 15
Keywords:
Focusing, impulse radiating antennas (IRAs), near field, prolate spheroidal reflector, subnanosecond pulse
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, conicalplate 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
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