Hostname: page-component-586b7cd67f-dlnhk Total loading time: 0 Render date: 2024-11-25T12:33:54.440Z Has data issue: false hasContentIssue false
  • English
  • Français

Super-wideband and compact omnidirectional antenna with simple structure and improved radiation properties

Published online by Cambridge University Press:  26 April 2016

X. Chen ,
L. Yang ,
L. Wang  and
G. Fu
X. Chen*
Affiliation:
Science and Technology on Antenna and Microwave Laboratory, Xidian University, Xi'an Shannxi 710071, China. Phone: +86 13572915354 Collaborative Innovation Centre of Information Sensing and Understanding, Xidian University, Xi'an Shannxi 710071, China
L. Yang
Affiliation:
Science and Technology on Antenna and Microwave Laboratory, Xidian University, Xi'an Shannxi 710071, China. Phone: +86 13572915354
L. Wang
Affiliation:
Science and Technology on Antenna and Microwave Laboratory, Xidian University, Xi'an Shannxi 710071, China. Phone: +86 13572915354
G. Fu
Affiliation:
Science and Technology on Antenna and Microwave Laboratory, Xidian University, Xi'an Shannxi 710071, China. Phone: +86 13572915354 Collaborative Innovation Centre of Information Sensing and Understanding, Xidian University, Xi'an Shannxi 710071, China
*
Corresponding author:X. Chen Email: [email protected]
Get access Rights & Permissions [Opens in a new window]

Abstract

A super-wideband (SWB) omnidirectional antenna is reported in Lau et al. in 2005 and 2008, but the antenna structure was complex and the radiation properties were unsatisfactory. In this paper, a SWB omnidirectional antenna with simple structure and improved radiation properties is presented. The antenna just consists of a two-stage inverted cone and two shorting pins. The proposed two-stage cone can improve the impedance matching in super-wide bandwidth, and the optimized shorting pins can reduce the cut-off frequency more than 50%. The calculated and measured results are investigated to confirm the antenna performances. The impedance bandwidth of the antenna for voltage standing wave ratio ≤ 2 achieves more than 1:22.1, covering 0.905 GHz to the above band. The smaller sizes than those referred by Lau et al. in 2008 are obtained. The profile of the antenna is 0.078λc, and the diameter of the radiation body is 0.217λc (λc is the wavelength of the cut-off frequency of the antenna). In addition, the radiation properties of the kind of SWB omnidirectional antenna are improved obviously. In the whole band, the ripple levels in horizontal radiation patterns are not more than 6.6 dB, and the cross-polarized levels are reduced by 9 dB.

Keywords

Omnidirectional antennaWidebandMiniaturizationOut of roundnessCross polarization
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 9 , Issue 3 , April 2017 , pp. 711 - 717
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2016 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

[1] Lau, K.L.; Li, P.; Luk, K.M.: A monopolar patch antenna with very wide impedance bandwidth. IEEE Trans. Antennas Propag., 53 (2005), 655–661.CrossRefGoogle Scholar
[2] Lau, K.L.; Kong, K.C.; Luk, K.M.: Super-wideband monopolar patch antenna. Electron. Lett., 44 (2008), 716–718.CrossRefGoogle Scholar
[3] Behdad, N.; Li, M.; Yusuf, Y.: A very low-profile, omnidirectional, ultra wideband antenna. IEEE Antennas Wireless Propag. Lett., 12 (2013), 280–283.CrossRefGoogle Scholar
[4] Gong, B.; Li, J.L.; Zheng, Q.R.; Yin, Y.Z.; Ren, X.S.: A compact inductively loaded monopole antenna for future UWB applications. Progr. Electromagn. Res., 139 (2013), 265–275.CrossRefGoogle Scholar
[5] Delaveaud, Ch.; Leveque, Ph.; Jecko, B.: New kind of microstrip antenna: the monopolar wire-patch antenna. Electron. Lett., 30 (1994), 1–2.CrossRefGoogle Scholar
[6] Row, J.S.; Yeh, S.H.; Wong, J.L.: A wide-band monopolar plate-patch antenna. IEEE Trans. Antennas Propag., 50 (2002), 1328–1330.Google Scholar
[7] Lau, K.L.; Luk, K.M.: A wide-band monopolar wire-patch antenna for indoor base station application. IEEE Antennas Wireless Propag. Lett., 4 (2005), 155–157.CrossRefGoogle Scholar
[8] Nakano, H.; Iwaoka, H.; Morishita, K.; Yamauchi, J.: A wideband low-profile antenna composed of a conducting body of revolution and a shorted parasitic ring. IEEE Trans. Antennas Propag., 56 (2008), 1187–1192.Google Scholar
[9] Zhang, Z.Y.; Fu, G.; Gong, S.X.; Lu, Q.Y.: Sleeve monopole antenna for DVB-H applications. Electron. Lett., 46 (2010), 879–880.CrossRefGoogle Scholar
[10] Danial, W.A.; Randy, L.: A wideband, low profile, shorted top hat monocone antenna. IEEE Trans. Antennas Propag., 60 (2012), 4485–4491.Google Scholar
[11] Chen, X.; Fu, G.; Li, X.: Super wideband characteristics of monopolar patch antenna. J. Eng., 1 (2013), 1–3.Google Scholar
[12] Koohestani, M.; Zurcher, J.-F.; Moreira, A.A.; Skrivervik, A.K.: A novel, low-profile, vertical-polarized UWB antenna for WBAN. IEEE Trans. Antennas Propag., 62 (2014), 1888–1894.CrossRefGoogle Scholar
[13] Gao, G.P.; Yang, M.K.; Niu, S.F.; Zhang, J.S.: Study of a novel U-shaped monopole UWB antenna by transfer function and time domain characteristics. Microw. Opt. Technol. Lett., 54 (2012), 1532–1537.CrossRefGoogle Scholar
[14] Gao, G.P.; Hu, B.; Cong, X.D.; He, L.L.: Investigation of a novel dual band-notched UWB antenna by the equivalent circuit model and time domain characteristics. Microw. Opt. Technol. Lett., 55 (2013), 2993–3000.CrossRefGoogle Scholar