IRE Transactions on Antennas and Propagation · 1963 · 589 citations · 7 references
EngineeringElectrical EngineeringAntennasMicrowave EngineeringPropagationAntenna ArraysAntenna DesignAntenna SynthesisBeam SteeringMicrowave AntennasPlanar AntennasArray DesignArray Radiation PatternsPencil Beam ScanningRadiation From Array AntennasRadiation PatternsReflectarray SynthesisSurface ImpedanceSurface Impedance Modeling
A class of antennas that uses arrays of elementary antennas as reflecting surfaces, called a Reflectarray, has been investigated. The reflecting surfaces are defined by a surface impedance that can be synthesized to produce various radiation patterns, with equations derived for the lossless case and methods for realizing the impedance presented. Experimental results of a waveguide array type Reflectarray demonstrate pencil beam, broad beam, and scanning modes, and data on the effects of specific phase errors are presented.
A class of antennas that utilizes arrays of elementary antennas as reflecting surfaces has been investigated. An antenna of this type is here called a Reflectarray. It has been found that the Reflectarray combines much of the simplicity of the reflector-type antenna with the performance versatility of the array type. The reflecting surfaces employed in these antennas are characterized by a surface impedance that can be synthesized to produce a variety of radiation patterns. The equations of the surface impedance as a function of the desired reflected phase front is derived for the lossless case and methods of realizing this surface impedance are presented. Experimental results of a waveguide array type Reflectarray are given including pencil beam, broad beam and scanning modes. Data on the effects of specific phase errors are presented.
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