MSRSAMarket and Social Research Society of Australia (Sydney, Australia)
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A microstrip square-ring slot antenna (MSRSA) attains UWB frequency range by splitting the square-ring slot and optimizing the feeding network [10].
Several approaches are developed in order to design multi-band micro-strip patch antennas such as slot matching concept [11],[12], as compact H-shaped slot configurations [13], as E-shaped slot with compatible feeding [14], as a U-shaped slot in [15] ,[16], as a square slot antenna fed by two orthogonal feed lines is designed for dual polarized applications in [17], as a micro-strip square-ring slot antenna (MSRSA) for UWB (Ultra Wideband) antenna applications is designed [18]; unfortunately, these solutions, it may easily provide the desired electric characteristics, but it becomes impractical due to the operational requirements on size and weight.