Novel technique for enhancing RCS reduction bandwidth of checkerboard surfaces

A new technique for enhancing the RCS reduction bandwidth of checkerboard surfaces is developed. In the conventional checkerboard surface the phase difference of (180 ± 37)° has to be obeyed. Using the proposed technique, this limitation of conventional checkerboard surface has been eliminated, allows extension in 10-dB RCS reduction bandwidth. This design has been implemented on one such conventional broad checkerboard surface. For a designed surface, using the pro technique, the 10-dB RCS reduction bandwidth is increased 83% to 91% (an +8%). Simulated results are included indicate excellent agreement with measurement.