A Rectangular Antenna with Microstrip Characteristics with a Dumb-bell Shaped Grounded Structure with defects for Wireless Communication Application

For dual-frequency operation, an inset-fed antenna with a rectangular patch is proposed. This antenna is loaded with a dumb-bell-shaped Defected ground structure in the ground plane. It has resonance frequencies at 1.90 GHz and 5.22 GHz, allowing it to be used in wireless communication systems such as PCS (1.9 GHz) and WLAN (5.22 GHz). There are two active modes, (i.e TM
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and another higher-order mode) that are responsible for the dual-band operation. The dominant model for this proposed antenna is TM
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. The broadside radiation characteristics of the two modes are similar, as are the polarization planes. The proposed antenna provides the appropriate gain and stable radiation patterns for perfectly applicable in wireless system domain such as Personal Communication system (PCS) and Wireless Local Area Networks (WLAN).