Printed Coupled Loop Wideband Antenna Design for Wireless Communication

Abstract

This paper explains the wideband loop antenna design for wireless communication. Printed antennas are supposed to be more attractive for mobile phone operations for achieving WWAN purposes. In mobile phones theses antenna usually cover the internal circuitry at the top or bottom of the device and they also require further isolation in order to get negligible coupling effect properly that comes due to the coupling between the radiation part of the antenna and the ground plane (1) to (3). This will limit the internal integration of the antenna with the other circuitry of the cell phone for using it for WWAN purposes for example for achieving better SAR (4). The proposed antenna consists of the folded loop and some patches in the ground plane to achieve desired goals. The ground plane and feeding part of the antenna are separated by FR4 substrate. Input is given through the capacitively coupled feeding port on the backplane. The antenna is designed to cover ranges of many bands such as, GSM (850/900MHz and 1800/1900MHz), WLAN (2.4GHz) and also the higher frequency bands such as ISM band. The antenna designed, gives very good return loss and has fine radiation pattern. The simulation of antenna in software called HFSS, version 11.0. I personally prefer to design antenna on this software because it gives a lot of customization options.