COMPACT QUAD BAND MONOPOLE ANTENNA

Abstract

In this article, a compact quad band monopole antenna is demonstrated. Asymmetric coplanar strip feeding is applied in the design in order to compact the size. The proposed antenna fabricated on a FR4 substrate has an overall size of 30-30 mm(2). By integrating an invert-C slot and a modified invert-F strip into an invert-C patch, multiple resonant frequencies can be excited at 1.1, 2.35, 3.6, and 5.4 GHz individually for global positioning system, wireless local area network, Bluetooth/ISM, and Wi-MAX applications. The measured result has shown a good agreement with the simulation results. (C) 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:1272-1276, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25994