Abstract
This paper presents an efficient method to enhance the isolation level between two dual-band E-shape microstrip patch antennas using dual-band EBG unit cells which operates in UMTS Tx (1.92–1.98GHz) and Rx (2.11–2.17GHz) band, respectively. The proposed EBG structure made with a periodic array of two different geometric dimensions of unit cell which has a modified mushroom-type. Overall size of the fabricated antenna is 210.5 mm × 117 mm. The fabricated two different EBG unit cell sizes are 15.6 mm × 4 mm and 17.4 mm × 4 mm, respectively. The experimental results show that the isolation levels between antennas in Tx/Rx band are under −35 dB.
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