A 2.3/3.3 GHz Dual Band Antenna Design for WiMax Applications

Adit Kurniawan, Iskandar Iskandar, P.H. Mukti

Abstract


A triangular-slot antenna with rectangular patch for 2.3/3.3 GHz WiMax applications has been implemented on DICLAD 527 substrate (relative permittivity εr = 2.5) with 1.524 mm of substrate thickness. A rectangular patch printed on one side of the substrate is fed by a 50 Ω microstrip line and acts as the frequency tuning stub, while the triangular slot is positioned on the opposite side of the substrate, center lined to the rectangular stub. From the measurement results based on VSWR = 2 or equal to the return loss of 9.53 dB, at the lower band of 2.3 GHz the resulting impedance bandwidth is 290 MHz (from 2.16 to 2.45 GHZ) and at the upper band of 3.3 GHz is  370 MHz (from 3.31 to 3.68GHz), providing services for 2.3 GHz and 3.3 GHz frequency bands allocated for WiMax applications. The antenna gain measurement at 2.3 GHz frequency band is almost agrees with the simulation result of 3.2 dBi. While at 3.3 GHz the gain is approximately 4.4 dBi and continues to decrease with increasing frequency. The antenna gain measurement achieves maximum of 4.8 dBi (6 dBi from simulation) at about 3 GHz. The simulation and measurement results are evaluated and discussed.

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References


Liu, D. & Gaucher, B., A branched inverted-F antenna for dual band WLAN applications, Proceedings of the IEEE Antennas and Propagation Society International Symposium, 3, pp. 2623-2626, Monterey, CA, June 2004.

Raj, R.K., Joseph, M., Aanandan, C.K., Vasudevan, K. & Mohanan, P., A new compact microstrip-fed dual-band coplanar antenna for WLAN applications, IEEE Trans. Antennas Propag., 54(12), 3755-3762, Dec. 2006.

Wu, J.W., Hsiao, H.M., Lu, J.H. & Chang, S.H., Dual broadband design of rectangular slot antenna for 2.4 and 5 GHz wireless, IEE Electron. Lett, 40(23), Nov. 2004.

Wong, K.L.,Compact and Broadband Microstrip Antennas, New York: John Wiley and Sons, 2002.

Yoon, J., Jeong, G.T. & Kwak, K.S., Fabrication and measurement of triangular-slot antenna for triple-band (2.4/5.2/5.8 GHz) antenna with rectangular tuning stub, Microwave and Opt. Technol. Lett., 49(8), Aug. 2007.

Plessis, M.D. & Cloete, J., Tuning stubs for microstrip patch antennas, IEEE Antennas Propag. Mag, 36, 52-56, Dec.1994.




DOI: http://dx.doi.org/10.5614%2Fitbj.ict.2010.4.2.1

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