Abstract
This article proposes a quad band patch antenna for mobile communication. The design requirements are to meet the 0.9 GHz, 1.8 GHz, 2.1 GHz and 2.45 GHz bands. The proposed antenna consists of a rectangular patch monopole printed antenna in which slotting technique is used to achieve multi band resonance. The Patch with three slotted lines generates four resonating frequencies to cover 0.9 GHz GSM band, 1.8 GHz DCS band, 2.1 GHz 3G band and 2.45 GHz ISM band. Slots are optimized to achieve proper quad band operation of the antenna. The proposed antenna is fed by using a 50 ohm microstrip line. The simulated results in terms of return loss, VSWR (<2) indicate the suitability of the antenna for mobile communication. The designed antenna is simulated using CST Microwave studio.
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