volume | PIER Journals

Abstract

In this paper, a novel compact tri-band monopole antenna for WLAN/WiMAX applications is proposed. By using a horizontal H-shaped strip and an L-shaped open end stub, and a deformation inverted T-shaped strip through a matching line attached to the 50-Ω feed-line, tri-band has impedance bandwidths for S₁₁≤ -10 dB are 2.4-2.7 GHz, 3.4-3.72 GHz, 5.06-5.85 GHz, covering 2.4/5.2/5/5.8 GHz for WLAN and 2.5/3.5/5.5 for WiMAX applications can be acquired. Experimental results show that the proposed tri-band antenna has nearly omnidirectional radiation characteristics across all the operation bands. Furthermore, the antenna with compact size of 30 × 20 × 0.8 mm³ has simple structures.

1. Liu, W.-C. and Y.-L. Chen, "Compact strip-monopole antenna for WLAN-band USB dongle application," Electronics Letters, Vol. 47, No. 8, 479-480, Apr. 14, 2011.
doi:10.1049/el.2010.3234

2. Ojaroudi, N., M. Ojaroudi, and N. Ghadimi, "Dual band-notched small monopole antenna with novel W-shaped conductor backed-plane and novel T-shaped slot for UWB applications," Microwaves, Antennas & Propagation, IET, Vol. 7, No. 1, 8-14, Jan. 11, 2013.
doi:10.1049/iet-map.2012.0180

3. Hsieh, C. and T. Chiu, "Dual-band antenna design using a dual-feed monopole slot," Microwaves, Antennas & Propagation, IET, Vol. 5, No. 12, 1502-1507, Sep. 16, 2011.
doi:10.1049/iet-map.2010.0543

4. Wu, C.-M., "Dual-band CPW-fed cross-slot monopole antenna for WLAN operation," Microwaves, Antennas & Propagation, IET, Vol. 1, No. 2, 542-546, Apr. 2007.
doi:10.1049/iet-map:20050116

5. Hua, M. J., P. Wang, Y. Zheng, H. Qin, Y. Liu, S. Yuan, and J. Liao, "Wideband monopole antenna based on CRLH for mobile applications," Progress In Electromagnetics Research Letters, Vol. 43, 25-34, 2013.
doi:10.2528/PIERL13081504

6. Liu, W.-C. and J.-K. Chen, "Dual-band twin stepped-patch monopole antenna for WLAN application," Electronics Letters, Vol. 45, No. 18, 929-931, Aug. 27, 2009.
doi:10.1049/el.2009.1968

7. Chacko, B. P., G. Augustin, and T. A. Denidni, "Uniplanar slot antenna for ultrawideband polarization-diversity applications," IEEE Antennas and Wireless Propagation Letters, Vol. 12, 88-91, 2013.
doi:10.1109/LAWP.2013.2242841

8. Lui, W. J., 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, 480-487, Apr. 2007.
doi:10.1049/iet-map:20060103

9. Gautam, A. K., S. Yadav, and B. K. Kanaujia, "A CPW-fed compact UWB microstrip antenna," IEEE Antennas and Wireless Propagation Letters, Vol. 12, 151-154, 2013.

10. Yao, J., F.-S. Zhang, X. Q. Jiao, and H. Bai, "Tri-band slotted f-shaped antenna with dual-polarization characteristics for WLAN/wimax applications," Progress In Electromagnetics Research Letters, Vol. 40, 181-190, 2013.
doi:10.2528/PIERL13041705

11. Zheng, L. and G. Wang, "Design of triple-frequency folded slot antenna for 2.4/3.5/5.2/5.8-GHz WLAN applications," Progress In Electromagnetics Research Letters, Vol. 43, 115-123, 2013.
doi:10.2528/PIERL13090204

12. Liu, P., Y. Zou, B. Xie, X. Liu, and B. Sun, "Compact CPW-fed tri-band printed antenna with meandering split-ring slot for WLAN/WiMAX applications," IEEE Antennas and Wireless Propagation Letters, Vol. 11, 1242-1244, 2012.

Dr. Shan Shan Huang

Dr. Jun Li

Dr. Jian Zhong Zhao