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Analysis of Blockage Effects in a Center‐Fed Reflectarray
Author(s) -
Pan Yu,
Zhang Yan
Publication year - 2013
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.27702
Subject(s) - microwave , radiation , french horn , antenna (radio) , radiation pattern , solver , horn antenna , acoustics , optics , engineering , computer science , slot antenna , physics , electrical engineering , telecommunications , programming language
Three quick methods that account for the blockage effects in a center‐fed reflectarray antenna design are presented. The first method simply adds the radiation pattern of the reflectarray on the passive feed horn antenna. For the second approach, the blockage is incorporated more accurately by introducing shadows on the reflectarray surface according to the location of the obstacles. The third approach places a physical metal sheet at the blocking obstacle on the main reflectarray surface. The radiation pattern of the complete antenna structure is also calculated using a full‐wave solver that also serves as a reference for accuracy comparison. To further validate the results, prototype reflectarray antennas based on two types of radiation elements are fabricated and the measured patterns are compared with predictions. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1921–1926, 2013