Karmokar, Debabrata Kumar, and Khaled Mahbub Morshed. 2011. “Analysis of Inverted-F and Loaded Inverted-F Antennas for 2.4 GHz ISM Band Applications”. Journal of Electrical Engineering 36 (2):4-9. https://banglajol.info/index.php/JEE/article/view/8090.