DRA gain enhancement using a planar metamaterial superstrate | Zendy

Panda Asit K. | Zendy; Sahu Sudhakar | Zendy; Mishra Rabindra K. | Zendy

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DRA gain enhancement using a planar metamaterial superstrate

Author(s) -

Panda Asit K.,

Sahu Sudhakar,

Mishra Rabindra K.

Publication year - 2018

Publication title -

international journal of rf and microwave computer‐aided engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.335

H-Index - 39

eISSN - 1099-047X

pISSN - 1096-4290

DOI - 10.1002/mmce.21445

Subject(s) - directivity , planar , metamaterial , materials science , optics , resonator , dielectric resonator antenna , broadside , dielectric , antenna (radio) , metamaterial antenna , refractive index , optoelectronics , dielectric resonator , radiation pattern , physics , telecommunications , slot antenna , computer science , computer graphics (images)

This article analyzes the radiation principle of a slot‐coupled hemispherical dielectric resonator antenna (DRA) integrated with a single‐layer metamaterial (MTM) superstrate, investigating it both numerically and experimentally. It creates a compact high directive DRA incorporating MTM superstrate. The proposed MTM medium consists of broadside coupled planar E‐shaped resonator periodic unit cell exhibiting low loss and a low refractive index over a broad frequency band. Measurements on fabricated prototypes to verify numerical results from full‐wave simulations, and they show more than 6 dB increase in directivity of the DRA.

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