volume | PIER Journals

2014-07-30

A Planar Monopole UWB Antenna with Improved Lower End Bandwidth Using an L-Shaped Stub Extended on the Ground Plane

Sani Mubarak Ellis,

Dr. Sani Mubarak Ellis

Electrical and Electronic Engineering

Kwame Nkrumah University of Science and Technology

Ghana

Homepage

Zhiqin Zhao,

Professor Zhiqin Zhao

School of Electronic Engineering

University of Electronic Science and Technology of China

China

Homepage

Jiangniu Wu,

Dr. Jiangniu Wu

School of Electronic Engineering

University of Electronic Science and Technology of China (UESTC)

China

Homepage

Kun Ma,

Dr. Kun Ma

School of Electronic Engineering

University of Electronic Science and Technology of China

China

Homepage

Zai-Ping Nie,

Professor Zai-Ping Nie

School of Electric Engineering

University of Electric Science and Technology of China

China

Homepage

Qing Huo Liu

Prof. Qing Huo Liu

Department of Electrical and Computer Engineering

Duke University

USA

Homepage

Progress In Electromagnetics Research C, Vol. 52, 109-114, 2014

doi:10.2528/PIERC14052001 | Google Scholar

Abstract

In this work, a planar monopole ultra-wideband (UWB) antenna with an L-shaped stub on the ground plane is proposed. The novel extended L-stub in conjunction with the UWB radiator achieves an ultra wideband impedance matching with a compact size. The proposed antenna is fabricated and measured showing an ultra wide operating frequency range from 2.3 to over 14 GHz (VSWR < 2) with a unidirectional gain from 3-6.5 dBi and efficiency from 70-85% within the UWB band from 3.1-10.6 GHz. The proposed antenna provides a new way to improve ultra wideband impedance matching other than the frequently used tapered microstrip feed line. It also provides a way to improve the lower frequency bandwidth of the antenna without increasing the antenna's physical size, which is the most common method to use.

Download Full Article (513) View Full Article volume

Citation

Copy Export

Sani Mubarak Ellis, Zhiqin Zhao, Jiangniu Wu, Kun Ma, Zai-Ping Nie, and Qing Huo Liu, "A Planar Monopole UWB Antenna with Improved Lower End Bandwidth Using an L-Shaped Stub Extended on the Ground Plane," Progress In Electromagnetics Research C, Vol. 52, 109-114, 2014.
doi:10.2528/PIERC14052001

References

1. Ellis, M. S., Z. Zhao, J. Wu, Z. Nie, and Q.-H Liu, "A novel miniature band-notched wing-shaped monopole ultra-wideband antenna," IEEE Antennas Wireless Propag. Lett., Vol. 12, 1614-1617, 2013.
doi:10.1109/LAWP.2013.2294346 Google Scholar

2. Wu, Q., R. Jin, J. Geng, and M. Ding, "Compact CPW-fed stacked circle monopole antenna with very wide bandwidth," Microwave Opt. Technol. Lett., Vol. 49, No. 5, 1192-1194, 2007.
doi:10.1002/mop.22377 Google Scholar

3. John, M. and M. J. Ammann, "Optimization of impedance for printed rectangular monopole antenna," Microwave Opt. Technol. Lett., Vol. 47, No. 2, 153-154, 2005.
doi:10.1002/mop.21109 Google Scholar

4. Liang, J., C. C. Chiau, X. Chen, and C. G. Parini, "Study of a printed circular disc monopole antenna for UWB systems," IEEE Trans. Antennas Propag., Vol. 53, No. 11, 3500-3504, 2005.
doi:10.1109/TAP.2005.858598 Google Scholar

5. Zhang, Y., T. Nakata, and T. Miyashita, "A miniature circular disc monopole UWB antenna with a tapered feed line and a circular ground," China-Japan Joint Microwave Conference, 411-414, Sep. 10-12 2008.
doi:10.1109/CJMW.2008.4772457 Google Scholar

6. Ren, Y. G. and K. Chang, "Ultra-wideband planar elliptical ring antenna," Electron. Lett., Vol. 42, No. 8, 447-449, Apr. 2006.
doi:10.1049/el:20060210 Google Scholar

7. Abbosh, A. S. and M. E. Bialkowski, "Design of ultra wideband planar monopole antennas of circular and elliptical shape," IEEE Trans. Antennas Propag., Vol. 56, No. 1, 17-23, Jan. 2007.
doi:10.1109/TAP.2007.912946 Google Scholar

8. Moghadasi, M. N., H. Rousta, and B. S. Virdee, "Compact UWB planar monopole antenna," IEEE Antennas Wireless Propag. Lett., Vol. 8, No. 22, 1382-1385, 2009.
doi:10.1109/LAWP.2009.2039111 Google Scholar

9. Locatelli, A., D. Modotto, F. M. Pigozzo, S. Boscolo, E. Autizi, C. DeAngelis, A.-D. Capobianco, and M. Midrio, "Increasing directionality of planar ultra-wideband antennas," Microwave Opt. Technol. Lett., Vol. 52, No. 1, 78-82, Jan. 2010.
doi:10.1002/mop.24849 Google Scholar