A New Compact Wide-Band Antenna Design for Satellite Communications with Dual Band-Notches for WiMAX and WLAN Using Particle Swarm Optimization

摘要

In this work, a new design of compact wide-band antenna with dual notch-band characteristics is proposed using Particle Swarm Optimization (PSO). The proposed antenna design is compact in size (32 mm x 38 mm x 1 mm) with a beveled ground plane for wide-band performance. In order to prevent interference problems from nearby communication systems like WiMAX (3.3-3.8 GHz) and WLAN (5.1-5.8 GHz) technologies, an open C-shaped stub is embedded in the radiating patch and a pair of U-shaped parasitic strips is inserted beside the feed line. Simulation results show that the proposed antenna design has a very wide bandwidth covering the entire UWB, X-band, and Ku band frequency range (3 to 20 GHz), along with notch-bands in the WiMAX (3.3-3.8 GHz) and (5.1-5.8 GHz) frequencies. Also, the results show good gain flatness, good impedance matching, and omnidirectional radiation patterns at almost all frequency bands of operation (3 to 20 GHz). This reveals the effectiveness of the proposed antenna design in the applications of wide-band communication systems such as satellite communications.