Abstract
An antenna based on a Substrate Integrated Waveguide (SIW) is proposed in this paper as suitable for modern wireless applications. The presented antenna is formed of two elements; an active and a passive. The active element is directly connected to the feeding line while the passive element, which consists of three segments, is energised by coupling with the active element by a means of a gap. Dimensions of each segment is 3.63 × 19.5 mm2. It was found that the antenna resonates at 16.98 GHz and has an impedance bandwidth of 985 MHz with a reflection coefficient of -35 dB. An overall gain of 9.44 dBi was further achieved with a total area of 30 × 23.5 mm2. A substrate of Rogers Duroid 5880 with relative permittivity of 2.2 and thickness of 0.787 mm is adopted for the design of this antenna. Designing and simulating the antenna accomplished using the Microwave Studio Suite of Computer Simulation Technology (CST) simulator.
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