Wideband radar cross section reduction covering X and Ku band using artificial magnetic conductor structures

A wideband radar cross section (RCS) that covering X and Ku band is achieved by using artificial magnetic conductor (AMC) structures. Dual-band Jerusalem crosses and wide-band square patches are selected to produce reflection phase values with a difference about 180° (±30°) over a broad frequency range. The calculated results indicate that a 10dB RCS reduction from 7.4 GHz to 17.0 GHz (78.7% relative bandwidth) for the both polarization is obtained, with a maximum reduction of 40.3 dB at 11.6GHz. A prototype has been fabricated and measured, and the measured results are in good agreement with the corresponding simulations.