Design and Analysis of New Ultra-Wideband Linear Antenna Array for Wireless Applications

Paper presents a low-cost compact planar microstrip-fed monopole antenna and its four-element array design for ultra-wideband (uwb) wireless communication and target detection applications, respectively, operating in the frequency span of 3-11ghz. a prototype was fabricated and then measured based on optimal parameters. the results of reflection coefficient (s11) and radiation patterns are shown and discussed. there is a good consistency between the simulated s11 and the measured one. in addition, a 1×4 linear array design with a size of 100×34mm2 is proposed to achieve a higher gain. simulation shows that the array gain is increased about 6 db in comparison with the single element through the whole uwb frequency range. the proposed array has an average of -15 db side lobe level (sll) in the mentioned range. and also, a -23 db sll is achieved by applying dolph-chebyshev amplitude distribution at 6 ghz. simulation results confirm that the antenna exhibits a constant bidirectional radiation pattern with a high and flat gain in case of the array design.