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Progress In Electromagnetics Research C
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A PLANAR MONOPOLE UWB ANTENNA WITH IMPROVED LOWER END BANDWIDTH USING AN L-SHAPED STUB EXTENDED ON THE GROUND PLANE

By S. M. Ellis, Z. Zhao, J. Wu, K. Ma, Z.-P. Nie, and Q. H. Liu

Full Article PDF (381 KB)

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.

Citation:
S. M. Ellis, Z. Zhao, J. Wu, K. Ma, Z.-P. Nie, and Q. H. 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

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

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

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

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, 2008.
doi:10.1109/CJMW.2008.4772457

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

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, 2007.
doi:10.1109/TAP.2007.912946

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

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, 2010.
doi:10.1002/mop.24849


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