Coplanar Integration of Dual-Band Microstrip Patch Antenna Using CAD-FEKO

This paper represents microstrip antenna for dual band applications such as Global Positioning System (GPS) and Bluetooth applications. The designed antenna must perform dual frequency operation i.e. 1.57 GHz and 2.45 GHz. So antenna resonates at frequency 1.57 GHz for GPS and 2.45 GHz for Bluetooth applications. Using CAD-FEKO electromagnetic simulation software, antenna has been optimized for continuous frequency band 1.2 GHz – 2.8GHz. This paper focuses on the designing of dual-band microstrip antenna with microstrip feed and co-axial probe feed and analyzes the results like return loss, VSWR, impedance, Directivity and radiation pattern at 1.57 GHz and 2.45 GHz. The antenna was designed on FR4 with overall size of 50 mm x 70 mm with height h = 1.6mm and dielectric constant r) = 4.4. In this paper Koch fractal technique is used, so that antenna structure has been reduced.