A triple-band highly miniaturized antenna for WiMAX/WLAN applications

Tanweer Ali, Rajashekhar C. Biradar

Research output: Contribution to journalArticlepeer-review

50 Citations (Scopus)


A novel highly miniaturized triple band antenna for WiMAX and WLAN applications is presented in this letter. The proposed design has an active patch area of only 108 mm2 (9 × 12 mm2), and operates at 2.5 (lower WiMAX), 3.47 (middle WiMAX) and 5.75 GHz (WLAN), respectively. Miniaturization in the proposed design is accomplished by etching 2 novel cascaded E-type unit cell defected ground structure in conjunction with the F-shaped slot, and multiband operations are achieved by etching U and H-type slots in the radiating monopole. The miniaturization process leads to the reduction of about 82.4% and 73.5% in the active patch area and volume of the proposed antenna respectively, as compared with the conventional designed triple band antenna. The antenna has a compact volume of 0.15 λ0 × 0.15 λ0 × 0.01 λ0 at a lower resonance of 2.6 GHz. The proposed structure has S11<–10 dB bandwidth of about 6.45% (2.55–2.72 GHz), 3.03% (3.25–3.35 GHz) and 5.9% (5.75–6.1 GHz) in simulation, and about 4.2% (2.51–2.62 GHz), 2.31% (3.42–3.50 GHz), and 4.81% (5.68–5.96 GHz) under measurement, respectively. Stable radiation characteristics and good impedance matching are observed across the operational bandwidth of the proposed design.

Original languageEnglish
Pages (from-to)466-471
Number of pages6
JournalMicrowave and Optical Technology Letters
Issue number2
Publication statusPublished - 01-02-2018

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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