This letter presents a new directional dual-band slotted trapezoidal inverted-F antenna (IFA) for indoor Wireless Local Area Network (WLAN) applications. The dual-band performance can be obtained by tuning the lengths of the inner symmetrical trapezoidal slots and the outer trapezoidal arms in a nearly independent manner. The measured results show that the proposed antenna can provide two separate impedance bandwidths (return loss better than 10 dB) around 180 MHz and 750 MHz for 2.4/5.1-5.8GHz WLAN bands, respectively. Good radiation performance and roughly constant in-band antenna directivities are also observed.
2. Jan, J.-Y. and L.-C. Tseng, "Small planar monopole antenna with ashorted parasitic inverted-L wire for wireless communications in the 2.4, 5.2 and 5.8-GHz bands," IEEE Trans. Antennas Propag., Vol. 52, No. 7, 1903-1905, Jul. 2004.
doi:10.1109/TAP.2004.831370
3. Wong, K.-L., L.-C. Chou, and C.-M. Su, "Dual-band flat-plate antenna with a shorted parasitic element for laptop applications," IEEE Trans. Antennas Propag., Vol. 53, No. 1, 539-544, Jan. 2005.
doi:10.1109/TAP.2004.838754
4. Zhang, H. and H. Xin, "A dual-band dipole antenna with integrated balun," IEEE Trans. Antennas Propag., Vol. 57, No. 3, 786-789, Mar. 2009.
doi:10.1109/TAP.2009.2013440
5. Shih, Y.-K., W.-J. Liao, S.-H. Chang, P.-C. Chiang, C.-T. Yeh, and T.-G. Ma, "A four element antenna system with antenna diversity for dual band WLAN operation," Proceedings of 2013 URSI International Symposium on Electromagnetic Theory (EMTS), 679-682, May 2013.
6. Gardelli, R., G. La Cono, and M. Albani, "A low-cost suspended patch antenna for WLAN access points and point-to-point links," IEEE Antennas Wireless Propag. Lett., Vol. 3, 90-93, 2004.
doi:10.1109/LAWP.2004.830009
7. Medeiros, C. R., E. B. Lima, J. R. Costa, and C. A. Fernandes, "Wideband slot antenna for WLAN access points," IEEE Antennas Wireless Propag. Lett., Vol. 9, 79-82, 2010.
doi:10.1109/LAWP.2010.2043332
8. Quan, X., R. Li, Y. Cui, and M. M Tentzeris, "Analysis and design of a compact dual-band directional antenna," IEEE Antennas Wireless Propag. Lett., Vol. 11, 547-550, 2012.
doi:10.1109/LAWP.2012.2199458
9. Huang, C.-Y. and E.-Z. Yu, "A slot-monopole antenna for dual-band WLAN applications," IEEE Antennas Wireless Propag. Lett., Vol. 10, 500-502, 2011.
doi:10.1109/LAWP.2011.2156755
10. Zhang, N., P. Li, B. Liu, X. W. Shi, and Y. J. Wang, "Dual-band and low cross-polarisation printed dipole antenna with L-slot and tapered structure for WLAN applications," Electron. Lett., Vol. 47, 360-361, 2011.
doi:10.1049/el.2011.0104
11. Row, J.-S., "Dual-frequency triangular planar inverted-F antenna," IEEE Trans. Antennas Propag., Vol. 53, No. 2, 874-876, 2005.
doi:10.1109/TAP.2004.841280
12. Huynhand, T. and K. F. Lee, "Single-layer single-patch wideband microstrip antenna," Electron. Lett., Vol. 31, 1310-1312, Aug. 1995.
13. Row, J.-S., "Dual-frequency triangular planar inverted-F antenna," IEEE Trans. Antennas Propag., No. 53, 874-876, 2005.
doi:10.1109/TAP.2004.841280
14. Liu, Z. D., P. S. Hall, and D. Wake, "Dual-frequency planar inverted-F antenna," IEEE Trans. Antennas Propag., No. 45, 1451-1458, 1997.
15. Bluetest, A. B., , http://www.bluetest.se.
16. Kildal, P.-S., et al., "Characterization of reverberation chambers for OTA measurementsof wireless devices: Physical formulations of channel matrix and new uncertainty formula," IEEE Trans. Antennas Propag., Vol. 60, No. 8, 3875-3891, 2012.
doi:10.1109/TAP.2012.2201125
17. Raza, H., J. Yang, and A. Hussain, "Measurement of radiation efficiency of multiport antennas with feeding network corrections," IEEE Antennas Wireless Propag. Lett., Vol. 11, 89-92, 2012.
doi:10.1109/LAWP.2011.2182594
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