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DGS (Defected Ground Structure) Microstrip Antenna for Bluetooth Applications

Siddhartha Pal, Kousik Roy, Atanu Nag, Adarsh Kumar Tiwary

This paper illustrates the designing of microstrip patch antenna utilizing defected ground structure. The major purpose of designing such kind of antenna is to attain multiband purpose which is vital for requirement of technology nowadays. Initiation of such kind of antenna with imperfect structure of ground increases the antenna functioning. In this case the ground element of the recommended antenna is regarded as defected ground structure (DGS). Moreover the optimization of this kind of antenna is made so as to achieve a return loss of -10db. Furthermore in comparison to simple ground, the recommended design augments the bandwidth and develops the input return loss of the antenna. The antenna design parameters and performances have been studied by means of simulations. The substrate utilized behind designing is of glass with a dielectric constant of 2.2. Moreover the design invariants of antenna consist of single layer thickness of 2mm as well as operating frequency of 4 GHz. The design was optimized so that we can get the finest probable effect. To conclude the microstrip antenna without DGS effects in narrow bandwidth with high return loss. In contrast, microstrip antenna with DGS offers higher operating bandwidth with less return loss.