DRA gain enhancement using a planar metamaterial superstrate. Issue 7 (10th September 2018)

• Record Type: Journal Article
• Authors: Panda, Asit K.; Sahu, Sudhakar; Mishra, Rabindra K.
• Other Names: Chen Zhi Ning guestEditor.; Xu He‐Xiu guestEditor.; Jiang Zhi Hao guestEditor.
• Is Part Of: International journal of RF and microwave computer-aided engineering. Volume 28:Issue 7(2018)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2018-09-10
• Subjects: dielectric resonator antenna (DRA), directivity, double negative, focusing effect, left‐handed material, metamaterial, negative refractive index; Microwave devices -- Computer-aided design -- Periodicals; Computer-aided engineering -- Periodicals; 621.3813
• DOI: 10.1002/mmce.21445
• Languages: English
• ISSNs: 1096-4290

Abstract

Abstract : 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.