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Coupling suppression in densely packed microstrip arrays using metamaterial structure
Author(s) -
Shafique Muhammad Farhan,
Qamar Zeeshan,
Riaz Laeeq,
Saleem Rashid,
Khan Shahid A.
Publication year - 2015
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.28943
Subject(s) - ground plane , microstrip , microstrip antenna , materials science , metamaterial , microwave , phased array , metamaterial antenna , split ring resonator , return loss , resonator , decoupling (probability) , patch antenna , optoelectronics , coupling (piping) , enhanced data rates for gsm evolution , optics , antenna (radio) , engineering , electrical engineering , physics , telecommunications , slot antenna , control engineering , metallurgy
This article reports on an efficient technique of using modified complementary split ring resonator metamaterial structures for enhancing isolation between the elements of densely packed microstrip phased array. A two element E‐coupled microstrip phased array operating at 3.7 GHz with edge‐to‐edge element separation of 0.125 λ o is realized. The proposed decoupling technique is analyzed by placing the metastructure in between the antennas on the patch layer as well as by etching it in the ground plane. Isolation enhancement of 14.6 dB is achieved when the metastructure is introduced on both top and bottom sides of the antenna array. The measured mutual coupling of −37.1 dB and return loss of −20.7 dB is demonstrated. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:759–763, 2015