A miniaturized slotted ground structure UWB antenna for multiband applications

Ali, Tanweer and Saadh, Mohammed A W and Biradar, Rajashekhar C and Andujar, Aurora (2018) A miniaturized slotted ground structure UWB antenna for multiband applications. Microwave and Optical Technology Letters, 60. pp. 2060-2068. ISSN 0895-2477

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Abstract

A concept of using slots both in the radiator and in the ground to miniaturize an ultrawideband (UWB) antenna in order to operate at multiband is demonstrated. Initially, a miniaturized circular UWB antenna is designed which results in about 53.5% reduction in total volume and about 46.6% in the active patch area, in comparison to the conventional UWB antenna. To reconfigure the proposed UWB antenna to operate in multiband applications, slotted ground approach is used. The slots in the ground plane of the proposed design affects the surface current distribution due to which the designed antenna operates at 3.7 (middle WiMAX), 5.7 (upperWiMAX), and 7.5 GHz (X-band) with 210 dB reflection coefficient bandwidth of about 5.3% (3.64–3.84 GHz), 5.5% (5.64–5.96 GHz), and 3.7% (7.44– 7.72 GHz), respectively. The proposed configuration is compact in size with a total area of only 0.26k0 3 0.21k0530 3 24.85283.3 mm2; at lower resonating band of 2.6 GHz. The designed multiband structure yields good impedance matching, acceptable gain and stable radiation characteristics both in xz and yz plane, across their operational bandwidths.

Item Type: Article
Uncontrolled Keywords: miniaturization, multiband, slotted ground plane, UWB
Subjects: Engineering > MIT Manipal > Electronics and Communication
Depositing User: MIT Library
Date Deposited: 25 Sep 2018 09:06
Last Modified: 25 Sep 2018 09:06
URI: http://eprints.manipal.edu/id/eprint/152052

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