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In this paper, a dual-band microstrip slot antenna over a suspended substrate with an antipodal parasitic element is proposed for wireless local area network systems operating at 2.4, 5.2, and 5.8 GHz. The antenna is composed of multi layers of flame retardant-4 (FR4) and air/foam substrates. The foam/air substrate is included a coaxial single-feed pin and the FR4 substrate is comprised of a modified...