Title :
The phase-switched screen
Author :
Chambers, Barry ; Tennant, Alan
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. of Sheffield, UK
Abstract :
Conventional (passive) radar-absorbent materials operate either by phase cancellation or by absorbing incident electromagnetic energy and converting it into heat. This paper examines a new type of active "absorber," called the phase-switched screen (PSS). The PSS operates quite differently from passive absorbers in that it exhibits an apparently low value of reflectivity by redistributing the electromagnetic energy incident upon it over a bandwidth that is wide enough to ensure that little reflected energy falls within the pass-band of the receiver. The discussion considers the basic temporal and spectral properties of several PSS topologies, and includes measured data on both planar and cylindrical PSS structures.
Keywords :
absorbing media; electromagnetic wave absorption; electromagnetic wave reflection; electromagnetic wave scattering; passive radar; radar cross-sections; absorbing media; electromagnetic energy; electromagnetic scattering; intelligent material; intelligent structure; modulation; passive absorber; phase cancellation; phase-switched screen; radar cross-section; radar-absorbent material; spectral property; temporal property; Electromagnetic scattering; Frequency; Intelligent sensors; Intelligent structures; Physics; Radar cross section; Radar tracking; Read-write memory; Reflectivity; Vehicles;
Journal_Title :
Antennas and Propagation Magazine, IEEE
DOI :
10.1109/MAP.2004.1396733
