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Development of adaptive structures incorporating MEMS devices to be used as reflectarrays or transmitarrays
Author(s) -
Latif Saeed I.,
Safari Mojtaba,
Shafai Cyrus,
Shafai Lotfollah
Publication year - 2014
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.28217
Subject(s) - ground plane , microelectromechanical systems , microwave , plane (geometry) , antenna (radio) , square (algebra) , engineering , electronic engineering , acoustics , optics , electrical engineering , physics , telecommunications , optoelectronics , geometry , mathematics
ABSTRACT The concept of adaptive array antenna is presented, where the array can be switched between a reflectarray state and a transmitarray state. Several configurations are discussed including a basic geometry comprising of just a slotted ground plane with MEMS bridges over each slot and a slotted ground plane with square patches or rings on both sides of the ground plane. In the later cases, the slots on the ground plane need to be shorted when a reflectarray is desired; otherwise, the array will behave as a transmitarray. The detail unit cell study is discussed for each case for the performance of the array. Experimental study is presented to verify the concept. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:935–938, 2014