Abstract:

To solve the problem of ultra-wideband (UWB) antennas in stealth, a novel UWB monopole antenna with low RCS is designed. The measured results show that the range of the -10 dB impedance bandwidth is from 2.2 to 10.4 GHz, and the symmetry of radiation patterns in 2.5 and 8 GHz is well. In comparison with the reference antenna, the RCS of the novel antenna has achieved effective reduction in most of the frequencies. With its largest gain loss about 1 dB in the whole operating frequencies, the largest values in RCS reduction with two different incident waves are 6.4 dBsm and 17.9 dBsm, respectively. This novel antenna can be applied in the UWB stealthy platform.