Abstract
The IRA considered here is a parboloidal reflector fed by conical TEM lines. Such an IRA has been analyzed in the past for its performance characteristics such as the prepulse or feed step in the impulse, assuming a step function excitation. In this paper, we extend the analysis to include the diffracted fields from the launcher plates and the circular rim of the reflector. The diffraction from the launcher plates can be viewed to consist of two parts. One has the plate edge diffraction followed by diffraction associated with the total currents on the plates. The leading terms in all of these diffracted signals arriving at an observer in the far field have been determined. In addition, the predominant portion of the radiated field consisting of the feed step and the impulse has been analytically Fourier transformed to get the boresight radiated spectrum. Experimental results from a prototype IRA system are also included.
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References
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© 1997 Springer Science+Business Media New York
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Giri, D.V., Baum, C.E. (1997). Temporal and Spectral Radiation on Boresight of a Reflector Type of Impulse Radiating Antenna (IRA). In: Baum, C.E., Carin, L., Stone, A.P. (eds) Ultra-Wideband, Short-Pulse Electromagnetics 3. Springer, Boston, MA. https://doi.org/10.1007/978-1-4757-6896-1_9
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DOI: https://doi.org/10.1007/978-1-4757-6896-1_9
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4419-3276-1
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