CPW-fed trapezoidal antenna with dual band-notched characteristic for UWB application

A novel ultra-wideband (UWB) design of a single-layer coplanar waveguide-fed planar monopole antenna with dual band-notched characteristic is presented. By inserting two opened rectangular loop slots to the ground-notched trapezoidal patch and adjusting the dimensions of the slots, the proposed antenna, which includes two notched ground planes only 24 mm in width and 31 nun in height, call reach a frequency band-width, defined by voltage standing wave ratio <2, of 9.4 GHz (from 3 to 12.4 GHz), covering the entire UWB bond (3.1-10.6 GHz), and have two frequency notch from 3.55-4.57 GHz and 5.55-0.87 GHz. Good monopole-like radiation patterns except in the notched frequency band have also been obtained. Details of the proposed antenna design and the simulation results are presented and discussed. (C) 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 898-900, 2010: Published online in Wiley InterScience (www.interscience.wiley.com). DOI:10.1002/mop.25064