Design of Compact Multiband Rectangular Microstrip Patch Antenna for IEEE 802.11 Standards

摘要

A multi-band compact rectangular microstrip patch antenna is proposed for IEEE 802.11 standards. Proposed antenna covers all five distinct frequency ranges 2.4 Ghz (IEEE 802.11 b/g/n), 3.65 GHz (IEEE 802.11 y), 4.9 Ghz (IEEE 802.11 j), 5 GHz (IEEE 802.11 a/h/j/n/ac) and 5.9 GHz (IEEE 802.11 p) bands. The design frequency is 2.42 GHz applicable for WLAN, UMTS and Wi-MAX application. The three resonance frequencies are observed to be 2.58, 3.74 and 5.12 Ghz. The return loss of proposed antenna is -16.41 dB at 2.42 GHz and -33.28, -15.6 and -19.02 dB at respective resonance frequencies. The simulated fractional -10 dB bandwidth of lower, middle and upper resonance frequencies are 42.25% (1.829-2.809 GHz), 10.9% (3.487 -3.889 GHz) and 20.89 % (4.844-5.974 GHz), respectively. The maximum gain, directivity, antenna efficiency and radiation efficiency of proposed antenna are 6.05 and 6.6 dBi, 94.91 and 98.56%, respectively. The experimental fractional -10 dB bandwidth are 52.42% (2.28-3.9 GHz) and 11.01% (5.15-5.75 GHz) with 2.85 and 5.43 GHz resonance frequency respectively. Both simulated and experimental results of proposed antenna cover all five frequency ranges issued by IEEE 802.11 WLAN standards which show good agreement. The analysis of rectangular patch antenna is performed with strip line feed by using IE3D mentor graphics simulation software.