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access icon free Compact super-wideband asymmetric monopole antenna with dual-branch feed for bandwidth enhancement

  • Author(s): J. Liu 1 ; K.P. Esselle 1 ; S.G. Hay 2 ; S.S. Zhong 3
    • View affiliations
    • Affiliations: 1: Centre for Microwave and Wireless Applications, Electronic Engineering, Macquarie University, NSW 2019, Australia;
      2: CSIRO, ICT Centre, PO Box 76, Epping, NSW 1710, Australia;
      3: School of Communication and Information Engineering, Shanghai University, Shanghai 200072, People's Republic of China
  • Source: Volume 49, Issue 8, 11 April 2013, p. 515 – 516
    DOI:  10.1049/el.2012.4015 , Print ISSN 0013-5194, Online ISSN 1350-911X
© The Institution of Engineering and Technology
Received 20/11/2012, Published

A novel compact super-wideband (SWB) antenna with an optimised feed is presented. The antenna is composed of an asymmetric trapezoid ground plane and a modified rectangular monopole patch. It is demonstrated that the bandwidth of the antenna is significantly enhanced by introducing an asymmetric dual-branch feed with an L-shaped feed branch. The measurements indicate that the 2:1 VSWR bandwidth is from 1.05 to 32.7 GHz with a ratio bandwidth of 31:1. Since the antenna features an extremely wide bandwidth and the entire size is only 74 × 80 mm, it is useful for modern wireless communication applications.

Inspec keywords: microwave antennas; millimetre wave antennas; monopole antennas; radio networks; microstrip antennas; antenna feeds; UHF antennas; broadband antennas

Other keywords: modified rectangular monopole patch; optimised feed; dual-branch feed; asymmetric trapezoid ground plane; modern wireless communication applications; bandwidth enhancement; asymmetric dual-branch feed; L-shaped feed branch; bandwidth 1.05 GHz to 32.7 GHz; SWB antenna; antenna features; compact super-wideband asymmetric monopole antenna; VSWR bandwidth

Subjects: Single antennas; Antenna accessories; Radio links and equipment

References

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      • 6. Liu, J., Zhong, S., Esselle, K.P.: ‘A printed elliptical monopole antenna with modified feeding structure for bandwidth enhancement’, IEEE Trans. Antennas Propag., 2011, 59, (2), pp. 667–670 (doi: 10.1109/TAP.2010.2096398).
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      • 3. Liang, X.L., Zhong, S.S., Wang, W.: ‘Tapered CPW-fed printed monopole antenna’, Microw. Opt. Technol. Lett., 2007, 48, (7), pp. 1411–1413 (doi: 10.1002/mop.21653).
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