A compact circular-ring antenna for ultra-wideband applications

L. Liu, S. W. Cheung, R. Azim, Mohammad Tariqul Islam

Research output: Contribution to journalArticle

62 Citations (Scopus)

Abstract

A simple circular-ring planar-monopole antenna, with a compact size of 26 × 28 mm2, fed by an offset-microstrip line, is proposed. The antenna is composed of a circular-ring radiator and a ground plane with a small rectangular slot cut along the upper edge for ultra-wideband (UWB) operation. Studies of the antenna are carried out using computer simulation. Prototype of the antenna is used for verification of the simulation results. Results show that the antenna has an impedance bandwidth of more than 132% (from 3.7 to more than 18 GHz) for the standing wave ratio of less than 2 (voltage standing wave ratio, VSWR ≤ 2), a stable omnidirectional radiation pattern and an average peak gain of 3.97 dBi across the UWB, making the antenna a good candidate for use in UWB communications.

Original languageEnglish
Pages (from-to)2283-2288
Number of pages6
JournalMicrowave and Optical Technology Letters
Volume53
Issue number10
DOIs
Publication statusPublished - Oct 2011

Fingerprint

Ultra-wideband (UWB)
antennas
Antennas
broadband
rings
standing wave ratios
wideband communication
monopole antennas
Monopole antennas
Microstrip lines
Radiators
radiators
slots
computerized simulation
prototypes
impedance
bandwidth
Bandwidth
Communication
Computer simulation

Keywords

  • circular-ring antenna
  • planar antenna
  • ultra-wideband

ASJC Scopus subject areas

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

Cite this

A compact circular-ring antenna for ultra-wideband applications. / Liu, L.; Cheung, S. W.; Azim, R.; Islam, Mohammad Tariqul.

In: Microwave and Optical Technology Letters, Vol. 53, No. 10, 10.2011, p. 2283-2288.

Research output: Contribution to journalArticle

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