Conference Proceeding

Holographic antennas: Principle of operation and design guidelines

Information Engineering Department, University of Siena, Via Roma 56, 53100 Siena, Italy
05/2010; pp.1 - 3 In proceeding of: Antennas and Propagation (EuCAP), 2010 Proceedings of the Fourth European Conference on
Source: IEEE Xplore

ABSTRACT In this paper, a systematic procedure to design a surface wave excited holographic antenna is proposed. First, an equivalent anisotropic surface impedance is defined by a combination of a desired aperture field and the average electric current distribution of the incident surface wave. This combination is then included as a constrain in an alternate projections process that is allowed for synthesizing an aperture field for a given mask of antenna directivity. Once each point of the antenna surface is characterized by a suitable impedance tensor, the latter is synthesized by a FFS-kind patch structure with variable dimension and geometry.

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Keywords

alternate projections process
 
antenna surface
 
aperture field
 
constrain
 
desired aperture field
 
equivalent anisotropic surface impedance
 
FFS-kind patch structure
 
geometry
 
given mask
 
incident surface wave
 
suitable impedance tensor
 
surface wave
 
systematic procedure