Abstract
The design of a new ultra-wideband (UWB) coplanar waveguide antenna is presented. The proposed antenna is a printed-circuit monopole using coplanar technology. The radiating element is a modified monopole with an optimal shape based on a binomial function. The ground plane is also designed with the some law. Different orders of this binomial function are considered. The antenna shape and dimensions are optimized to achieve an UWB bandwidth operation covering the frequency range from 3.1 to 10.6 GHz. A prototype of the designed antenna was fabricated and measured. Obtained results show that the proposed antenna provides omnidirectional elevation pattern across the operating hand. Results provided by simulations and measurements are presented and discussed; they show a good agreement. (C) 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 2308-2313. 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24645