New Technique to Excite Higher-Order Radiating Mode in a Cylindrical Dielectric Resonator Antenna

Guha, Debatosh ; Banerjee, Archita ; Kumar, Chandrakanta ; Antar, Yahia M. M. (2014) New Technique to Excite Higher-Order Radiating Mode in a Cylindrical Dielectric Resonator Antenna IEEE Antennas and Wireless Propagation Letters, 13 . pp. 15-18. ISSN 1536-1225

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Official URL: http://doi.org/10.1109/LAWP.2013.2294877

Related URL: http://dx.doi.org/10.1109/LAWP.2013.2294877

Abstract

Higher-order HEM 12δ mode has been experimentally realized in a cylindrical dielectric resonator antenna (CDRA) very recently revealing broadside radiation like the dominant HEM 11δ mode. The primary challenge is the excitation of the mode in a practical DRA sitting on a metal ground plane, which was first resolved by introducing a floating feed as an equivalent current ribbon. In this letter, yet another technique has been explored using a conventional probe-fed CDRA placed on a metal plate. Only a new trough-shaped air cavity has been introduced in the ground plane just beneath the DRA to simulate a special boundary condition, which enunciates desired modal fields. Such a technique may be improvised for other potential applications. The proposed concept has been verified using both simulated and experimental results.

Item Type:Article
Source:Copyright of this article belongs to Institute of Electrical and Electronics Engineers.
Keywords:Defected Ground Structure; Dielectric Resonator Antenna; Feed Mechanism; Radiation Modes.
ID Code:117493
Deposited On:23 Apr 2021 04:37
Last Modified:23 Apr 2021 04:37

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