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Suppression of mutual coupling in rectangular dielectric resonator antenna arrays using Epsilon-Negative metamaterials (ENG)

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  • Maryam Rezapour
  • Jalil A. Rashed-Mohassel
  • Asghar Keshtkar
  • Mohammad-Naser Moghadasi

Abstract

A double slotted symmetrical split ring resonator with an inductive stub in its inner ring is presented as a Single Negative Electric (SNG) metamaterial to suppress mutual coupling between two E-plane coupled microstrip line fed rectangular dielectric resonator antenna (RDRA) array. The proposed SRR exhibits two resonant frequencies and wide stop-bands. The -10 dB bandwidth of S21 from 2022MHz to 2720 MHz and from 2187 MHz to 3839 MHz are obtained for the first structure, #1, and the second structure, #2, respectively. By introducing an ENG layer between the two RDRAs, the experimental reduction in mutual coupling is more than 23 dB with a small frequency shift (∼ 20 MHz), while the impedance matching is improved. The radiation efficiency and total efficiency are increased while the far-field pattern in the E-plane is not disturbed.

Suggested Citation

  • Maryam Rezapour & Jalil A. Rashed-Mohassel & Asghar Keshtkar & Mohammad-Naser Moghadasi, 2019. "Suppression of mutual coupling in rectangular dielectric resonator antenna arrays using Epsilon-Negative metamaterials (ENG)," Journal of Electromagnetic Waves and Applications, Taylor & Francis Journals, vol. 33(9), pages 1211-1223, June.
    • Handle: RePEc:taf:tewaxx:v:33:y:2019:i:9:p:1211-1223
    DOI: 10.1080/09205071.2019.1605941
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