Evaluation of a mushroom shape CPW-fed antenna with triple band-notched characteristics for UWB applications based on multiple attribute decision making

A CPW-fed ultra-wideband (UWB) planar monopole antenna with triple band-notched characteristics is presented in this paper. In addition, a prototype of the antenna was fabricated and its performance is approved experimentally. Three notched frequency bands are achieved by using a novel inverted V-shaped impedance resonator, two L-shaped open circuit stubs, and T-shaped tuning stub, three band-notched frequencies could be obtained in the WiMAX (3.3-3.6GHz), WLAN (5.15-5.85GHz), downlink of X-band satellite communication (7.25-7.75GHz). Simulated and measurement results show that proposed antenna could perform 2.9-11GHz (116%), defined by VSWR<2. The proposed antenna has small size (20x20x1.6mm(3)) with omnidirectional radiation pattern. Also, an evaluation is done based on analytical hierarchy process method for comparison the proposed monopole antenna with some previously presented UWB monopole antennas.