A miniaturized slotted ground structure UWB antenna for multiband applications

Tanweer Ali, A. W. Mohammad Saadh, Rajashekhar C. Biradar, Aurora Andújar, Jaume Anguera

Research output: Contribution to journalArticle

14 Citations (Scopus)

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 (upper WiMAX), and 7.5 GHz (X-band) with −10 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 0.26λ0 × 0.21λ0 = 30 × 24.8 = 283.3 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.

Original languageEnglish
Pages (from-to)2060-2068
Number of pages9
JournalMicrowave and Optical Technology Letters
Volume60
Issue number8
DOIs
Publication statusPublished - 08-2018

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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