RADAR CROSS-SECTION OF SYMMETRICAL PARABOLIC REFLECTORS WITH CAVITY-BACKED DIPOLE FEEDS

Authors
JENN DC FLETCHER JE PRATA A
Citation
Dc. Jenn et al., RADAR CROSS-SECTION OF SYMMETRICAL PARABOLIC REFLECTORS WITH CAVITY-BACKED DIPOLE FEEDS, IEEE transactions on antennas and propagation, 41(7), 1993, pp. 992-994
Citations number
5
Categorie Soggetti
Telecommunications,"Engineering, Eletrical & Electronic
Journal title
IEEE transactions on antennas and propagation → ACNP
ISSN journal
0018926X
Volume
41
Issue
7
Year of publication
1993
Pages
992 - 994
Database
ISI
SICI code
0018-926X(1993)41:7<992:RCOSPR>2.0.ZU;2-N
Abstract
The monostatic radar cross section (RCS) of a symmetric parabolic refl ector antenna with a cavity-backed dipole feed is computed using the m ethod of moments. At frequencies below the operating frequency band of the antenna the dipole contribution is not significant; in the operat ing band the dipole terminal load condition only affects the RCS near boresight. The f/D ratio of the antenna is shown to have a significant effect on the RCS. By adjusting the focal length, the cavity and para boloid scattering contributions can be made to partially cancel, yield ing a reduction in RCS near boresight.