Title :
RCS reduction of antennas integrated in an infinite PEC plane
Author :
Persson, Patrik ; Thors, Bjorn
Author_Institution :
Div. of Electromagn. Theor., R. Inst. of Technol., Stockholm, Sweden
Abstract :
We have studied the possibility of reducing the RCS of an antenna located in an infinite PEC plane. Both a PO and PTD model is used. It is found that it is possible to reduce the RCS by introducing a transition region enclosing the antenna where the surface impedance is tapered to zero. In practice, this can be achieved by using RAM or by changing the impedance of edge elements in the array. It was also shown that shaping is the most important factor, and if an impedance tapering is used its properties versus θ must reflect the properties of the antenna.
Keywords :
antenna arrays; mobile antennas; physical optics; physical theory of diffraction; radar cross-sections; surface impedance; PO model; PTD model; RCS; antenna; array edge elements; impedance tapering; infinite PEC plane; shaping; surface impedance; transition region; Electromagnetic scattering; Optical scattering; Optical surface waves; Physical optics; Radar antennas; Radar cross section; Radar scattering; Radar theory; Surface impedance; Unmanned aerial vehicles;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2005 IEEE
Print_ISBN :
0-7803-8883-6
DOI :
10.1109/APS.2005.1552178
