Compact multiband antenna for wireless and satellite communication

This paper presents the design and result of a miniaturized wideband triple frequency microstrip patch antenna for mobile and satellite communication applications. The proposed antenna consists of an array of rectangular slits that enables to operate at Industrial Scientific and Medical band (ISM), Wireless LAN (WLAN) and satellite communication bands. By etching slits in the nonradiating edges of the patch notching at 3-5 GHz WIMAX (World Wide Interoperability for Microwave Access) band is also achieved that provides a good isolation between WIMAX and WLAN technologies. Compared to a conventional microstrip patch antenna, slits cause a reduction in the resonant frequency from 5.5 to 2.4 GHz thereby providing more than 80% size reduction. The various antenna parameters like return loss, bandwidth, input impedance, gain etc of the patch antenna with and without slits are observed and analysed using CADFEKO. The results show that the proposed compact multiband antenna is more efficient than traditional patch antenna making it suitable for various applications.