A U-Shaped Printed UWB Antenna with Three Band Rejection

Abstract

Design approach for triple-band rejection characteristics of compact printed UWB antenna is proposed. This design can avoid interference between UWB and narrowband such as WLAN (5.5 GHz), WiMax (3.4 GHz), and downlinks of X band (7.5 GHz) for satellite communication application. To achieve triple-band rejection characteristic double folded multiple mode resonators are placed symmetrically to the feed line. The antenna comprises a U-shaped metal patch, ground plan with rectangular notch on the backside, and 50 microstrip feed line for the impedance matching. The antenna attains an impedance bandwidth range between 3.1 and 10.6 GHz with VSWR < 2, omitted the bands of WiMax (3.2-3.6 GHz), WLAN (4.9-6.1 GHz), and downlinks. Keywords Microstrip antenna • WiMax • Multiple mode resonator • VSWR • HFSS 1 Introduction Ultra-Wideband technology grown to be very popular when the communication exhibited the 3.1-10.6 GHz range for unlicensed band in the year 2002 [1]. UWB is extensively being used in numerous applications on account of its excessive data