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In this paper, the meander line antenna (MLA) have been designed to operate at 2.4-GHz for WLAN application. Two different designs of meander line antenna are investigated, without conductor line and with conductor line. Microwave Office software is used for simulation designed process. The antenna is fabricated on a double-sided FR-4 printed circuit board using an etching technique. Then the design has been tested with the Advantest Network Analyzer. The comparison between simulation and measurement results for the return loss and radiation patterns were presented. A bandwidth of 80 MHz and return loss of -37.7 dB were obtained at frequency 2.4 GHz. The gain is comparable to microstrip yagi antenna.

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This paper present 3 design of array antenna from type of inset-fed microstrip patch antenna oriented at 450 and -450. The antenna is capable to generate dual-polarization radiation pattern slanted at 450 and -450. Combinations of two and more patches using quarter-wave impedance matching technique have been used to design the array antenna operate at 2.4 GHz. The design were simulated using Microwave Office 2006 and were fabricated on FR4 substrate with a dielectric constant Er =4.7, tan 6 =0.019 and thickness =1.6mm. The simulation and measurement result have been compared. The 3 design 1x2, 1x4 and 2x2 array antenna yields a bandwidth of 5%, return loss <-10dB, HPBW for single element found at 90.07°-89.750 and HPBW for array antenna found at 84.68°-79.05°.Simulations and measurements were shown that the array antennas gave better results in term of VSWR, return loss and antenna gain compared to the single patch. The higher number of patches in an array will improve the performance of the antenna.