A DUAL BAND STACKED APERTURE COUPLED ANTENNA ARRAY FOR WLAN APPLICATIONS

In this article, a dual band stacked micostrip antenna array is presented for wireless local area network. The antenna is designed and simulated using CST MWSv'14. Stacking of the patches is done to achieve dual band. Further resonant slots are cut on the patch to achieve greater bandwidth. The antenna uses aperture coupled feed with defected ground structure on reduced ground. The antenna is fabricated on FR4 substrate with a dielectric constant of 4.4. The simulated antenna shows a bandwidth of 228.3 MHz from 3.63 to 3.86 GHz and 232 MHz from 5.15 to 5.38 GHz. The simulated gain and envelope correlation coefficient was found to be 6.11 dB and 0.14. The testing of the prototype antenna (to measure S-11) is done using vector network analyser. The measured results are matching to the simulated ones. The simulated and the measured results are presented in the article. (C) 2017 Wiley Periodicals, Inc.