Authors: Ying Liu
Source: FERMAT, Volume 26, Communication 9, Mar.-Apr., 2018
Abstract: Antenna is a special scattering object which should be used to transmit and receive the electromagnetic fields firstly. In recent years, antenna radar cross section (RCS) reduction has received high priority in the design of many platforms since it contributes to the total RCS of low-observable platforms significantly. Antenna RCS is distinctly different for frequencies in the operating band as compared to those out of the operating band. Thus, effective control of antenna RCS must address the in-band and out-of-band frequencies separately. However, methods those are effective out of the operating band impact the antenna performance in its operating band. Traditional methods for scattering objects are difficult to use for antennas. This talk will review the theory and the reduction methods for antennas. Some case studies including Broadband Polarization Rotation Reflective Surface, Low RCS and High-gain Antennas, etc, will be discussed. A conclusion will be given in the end.
Index Terms: Antenna, RCS, Polarization Rotation Reflective Surface, Phase Gradient Metasurface
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Prediction and Reduction of Antenna RCS