Compact Microstrip-fed Monopole Antenna with Modified Slot Ground Plane for UWB Applications
Keywords:
Microstrip feed line, UWB antenna, wide impedance bandwidthAbstract
A novel UWB microstrip-fed monopole antenna with modified structure has been designed and analyzed. The main body of the antenna under consideration consists of a quasi square radiating patch with tapered steps and a modified slotted ground plane. Due to the repeatedly cutting of three notches on the radiating patch and also inserting a rectangular slot and three tapered steps on the ground plane, a new resonance is excited and a wide bandwidth is obtained. By applying two sleeves with proper sizes to the antenna structure, an even wider impedance bandwidth is achieved. The antenna has a compact size of 18×12×1.6mm3 and operates over the frequency range of 2.34 – 21.43 GHz (9.15:1; 160%). The impedance bandwidth improvement process of the proposed antenna is presented and discussed in detail.
Downloads
References
M. Ojaroudi, C. Ghobadi, and J. Nourinia, “Small Square Monopole Antenna with Inverted T-Shaped Notch in the Ground Plane for UWB Supplication,” Antennas and Wireless Propagation Letters, IEEE, vol. 8, pp. 728-731, 2009.
R. Azim, M. T. 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, October 2011.
M. Ojaroudi, S. Yazdanifard, N. Ojaroudi, and M. Naser-Moghaddasi, “Small Square Monopole Antenna with Enhanced Bandwidth by Using Inverted T-Shaped Slot and Conductor-Backed Plane,” IEEE Trans. Antennas Propagat., vol. 59, no. 2, pp. 670-674, February 2011.
H.-W. Liu, and C.-F. Yang, “Miniature HookShaped Monopole Antenna for UWB Applications,” Electronics Letters, vol. 46, no. 4, pp. 265-266, February 2010.
L. Pengcheng, L. Jianxin, and Ch. Xiaodong, “Study of Printed Elliptical/Circular Slot Antennas for Ultrawideband Applications,” IEEE Trans. Antennas Propagat., vol. 54, no. 6, pp. 1670- 1675, June 2006.
D. S. Javan, and O. H. Ghouchani, “Cross Slot Antenna with U-Shaped Tuning Stub for Ultra Wideband Applications,” Applied Computational Electromagnetics Society (ACES) Journal, vol. 24, no. 4, pp. 427-432, August 2009.
R. A. Sadeghzadeh-Sheikhan, M. NaserMoghadasi, E. Ebadifallah, H. Rousta, M. Katouli, and B. S. Virdee, “Planar Monopole Antenna Employing Back-Plane Ladder-Shaped Resonant Structure for Ultra-Wideband Performance,” Microwaves, Antennas & Propagation, IET, vol. 4, no. 9, pp. 1327-1335, September 2010.
W. J. Lui, C. H. Cheng, and H. B. Zhu, “Experimental Investigation on Novel Tapered Microstrip Slot Antenna for Ultra-Wideband Applications,” Microwaves, Antennas & Propagation, IET, vol. 1, no. 2, pp. 480-487, April 2007.
M. R Ghaderi and F. Mohajeri, “A Compact Hexagonal Wide-Slot Antenna with Microstrip-Fed Monopole for UWB Application,” Antennas and Wireless Propagation Letters, IEEE, vol. 10, pp. 682-685, 2011.
R. Azim, M. T. Islam, and N. Misran, “Compact Tapered-Shape Slot Antenna for UWB Applications,” Antennas and Wireless Propagation Letters, IEEE, vol. 10, pp. 1190-1193, 2011.
M. Naghshvarian-Jahromi and N. KomjaniBarchloui, “Analysis of the Behavior of Sierpinski Carpet Monopole Antenna,” Applied Computational Electromagnetics Society (ACES) Journal, vol. 24, no. 1, pp. 32-36, February 2009.
J. William and R. Nakkeeran, “A New UWB Slot Antenna with Rejection of WiMax and WLAN Bands,” Applied Computational Electromagnetics Society (ACES) Journal, vol. 25, no. 9, pp. 787-793, September 2010.
L. Ch. Godara, Handbook of Antennas in Wireless Communications, CRC 2002.
