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Efficient, high gain with low side lobe level antenna structures using parasitic patches on multilayer superstrate

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Title Efficient, high gain with low side lobe level antenna structures using parasitic patches on multilayer superstrate
 
Creator VAIDYA, AR
GUPTA, RK
MISHRA, SK
MUKHERJEE, J
 
Subject frequency selective surface
Fabry-Perot cavity
high- gain antennas
multilayer
stacked antenna
ISM band
PRINTED-CIRCUIT ANTENNAS
MICROSTRIP REFLECTARRAY
ENHANCEMENT METHODS
DESIGN
BAND
EBG
CAVITY
 
Description In this article, we propose efficient high gain with low side lobe level (SLL) antenna structures using parasitic patches (PPs) on multilayer superstrates. The antenna structures consist of a microstrip antenna that feeds an array of square PPs fabricated on multilayer FR4 superstrates. The patches fabricated on multilayer superstrate are suspended in air with the help of dielectric rods at integral multiple of 0/2. The structure with 9 x 9 array of square PPs on a superstrate layer at 0/2 provides a gain of 19 dB, which increases to 21.1 and 21.8 dB when the superstrate layer height is increased to 1.0 and 1.5 0, respectively. However, SLL increases with increase in superstrate height. Gain enhancement with low SLL is achieved using PPs on multilayer superstrate. The antenna with 3 x 3 and 9 x 9 array of square PPs on superstrate layers at 0.5 and 1.5 0, respectively provides a gain of 22.7 dB with 92% efficiency, SLL of -22.3 dB and front to back lobe ratio of more than 20 dB. Structure is designed, fabricated, and tested. The measured VSWR is
 
Publisher WILEY-BLACKWELL
 
Date 2014-10-14T13:13:43Z
2014-10-14T13:13:43Z
2012
 
Type Article
 
Identifier MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, 54(6)1488-1493
http://dx.doi.org/10.1002/mop.26818
http://dspace.library.iitb.ac.in/jspui/handle/100/14492
 
Language en