UWB Monopole Antenna with Compact Polygon-Shaped Patch for Portable Devices
关键词:
CPW-fed, small monopole antenna, truncated ground plane, ultra wideband (UWB) antenna摘要
In this paper, a small ultra wideband (UWB) antenna with co-planar waveguide (CPW) feed, consisting of a polygon-shaped design on the patch and a ground plane truncated with two mirror rectangular–shaped notches is designed for ultra wideband (UWB) applications. In this proposed antenna, through increasing the number of cuts inside the initial patch, a proper control on the upper frequency of the band can be achieved. The overall dimension of the antenna is 19×19 ×1 mm3 and fed by 50 ? coplanar waveguide. The proposed antenna is developed and its VSWR is compared with the simulated result. The proposed antenna operates in the adopted bandwidth (3.1 GHz-10.6 GHz) with VSWR < 2, and covers it very well from 3 GHz to 14.9 GHz, which provides fractional bandwidths of more than 132%. The effect of the ground plane notch on the optimization of the VSWR is discussed in detail.
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参考
H. Schantz, The Art and Science of UWB Antennas, Artech House, Norwood, MA, 2005.
FCC 1st Report and Order on Ultra-Wideband Technology, 2002.
FCC 1st Report and Order on Ultra-Wideband Technology FCC, Washington, Dec. 2001.
W. Weng, “Optimal design of an ultra-wideband antenna with the irregular shape on radiator using particle swarm optimization,” Applied Computational Electromagnetics Society (ACES) Journal, vol. 27, no. 5, pp. 427-434, May 2012.
N. Ojaroudi, M. Ojaroudi, and Sh. Amiri, “Enhanced bandwidth of small square monopole antenna by using inverted U-shaped slot and conductor-backed plane,” Applied Computational Electromagnetics Society (ACES) Journal, vol. 27, no. 8, pp. 685-690, August 2012.
M. Majidzadeh and C. Ghobadi, “Compact microstrip-fed monopole antenna with modified slot ground plane for UWB applications,” Applied Computational Electromagnetics Society (ACES) Journal, vol. 27, no. 10, pp. 801-807, Oct. 2012.
R. Azim, M. Islam, and N. Misran, “Design of a planar UWB antenna with new band enhancement technique,” Applied Computational Electromagnetics Society(ACES) Journal, vol. 26, no. 10, pp. 856-862, Oct. 2011.
J. Liang, L. Guo, C. Chiau, X. Chen, and C. Parini, “Study of CPW-fed circular disc monopole antenna for ultra wideband applications,” in Proc. IEE Microw. Antennas Propag., pp. 520-526, 2005.
C. Lee, T. Yo, C. Luo, C. Tu, and Y. Juang, “Broadband disk monopole antenna with a circular CPW-feeding line,” in Proc. IEEE AP-S Int. Symp., Honoluu, HI, pp. 773-776, 2007.
W. Tong and Z. Hu, “A CWP fed circular monopole antenna for ultra wideband wireless communications,” in Proc. IEEE AP-S Int. Symp. vol. 3, pp. 528-531, 2005.
N. Chen and Y. Liang, “Coplanar-waveguide fed circular disc monopole antenna with improved radiation characteristics,” in 2 nd Proc. Eur. Conf. Antennas Propag., Edinburgh, U.K. pp. 1-6, 2007.
