A wideband unidirectional antenna composed of a magneto-electric dipole with Γ-shaped feed is designed. Simulated and measured results are presented. It achieves an impedance bandwidth of 84% for VSWR ≤ 2 ranging from 2.05GHz to 5.05GHz, stable peak gain of around 5 dBi, unidirectional radiation patterns and low cross polarization over the whole operating band. It is sufficient for accommodating recent wireless communication services such as 3G, WiFi, WiMax, Bluetooth, WLAN and Zigbee, etc.
2. Capozzoli, A. and G. D'Elia, "Global optimization: Applications to advanced re°ector antennas synthesis and diagnosis techniques," Progress In Electromagnetics Research, Vol. 56, 195-232, 2006.
doi:10.2528/PIER04123001
3. Islam, M. T., M. N. Shakib, and N. Misran, "Design analysis of high gain wideband L-probe FED microstrip patch antenna," Progress In Electromagnetics Research, Vol. 95, 397-407, 2009.
doi:10.2528/PIER09080204
4. Mahmoud, S. F. and A. R. Al-Ajmi, "A novel microstrip patch antenna with reduced surface wave excitation," Progress In Electromagnetics Research, Vol. 86, 71-86, 2008.
doi:10.2528/PIER08092403
5. Gao, S. and A. Sambell, "simple broadband printed antenna," Progress In Electromagnetics Research, Vol. 60, 119-130, 2006.
doi:10.2528/PIER05092603
6. Lee, Y.-C. and J.-S. Sun, "Compact printed slot antennas for wireless dual- and multi-band operations," Progress In Electromagnetics Research, Vol. 88, 289-305, 2008.
doi:10.2528/PIER08111902
7. Islam, M. T., M. N. Shakib, and N. Misran, "Broadband E-H shaped microstrip patch antenna for wireless systems," Progress In Electromagnetics Research, Vol. 98, 163-173, 2009.
doi:10.2528/PIER09082302
8. Wang, Y. J. and C. K. Lee, "Compact and broadband microstrip patch antenna for the 3G IMT-2000 handsets applying styrofoam and shorting-post," Progress In Electromagnetics Research, Vol. 47, 75-85, 2004.
doi:10.2528/PIER03100901
9. Luk, K. M. and H. Wong, "complementary wideband antenna," U.S. Patent No. 11/373, 518, 2006.
10. Luk, K. M. and H. Wong, "A new wideband unidirectional antenna element," Microw. Opt. Technol., Vol. 1, No. 1, 35-44, 2006.
11. Wu, B. Q. and K.-M. Luk, "A magneto-electric dipole with a modified ground plane," IEEE Antennas Wireless Progagat. Lett., Vol. 8, 627-629, 2009.
doi:10.1109/LAWP.2009.2022964
12. Wu, B. Q. and K.-M. Luk, "A broadband dual-polarized magnetoelectric dipole antenna with simple feeds," IEEE Antennas Wireless Progagat. Lett., Vol. 8, 60-63, 2009.
doi:10.1109/LAWP.2008.2011656
13. Wong, H., K.-M. Mak, and K.-M. Luk, "Directional wideband shorted bowtie antenna," Microwave Opt. Technol. Lett., Vol. 48, No. 8, 1670-1672, 2006.
doi:10.1002/mop.21709
14. Clavin, A., "A new antenna feed having equal E- and H-plane patterns," IRE Trans. on Antennas and Propag., Vol. 2, No. 3, 113-119, 1954.
Submit
