Differentially-fed UWB slot antenna for direct board integration

Abstract

Differentially fed UWB slot antenna designs using two optimization approaches are reported. The geometries are created using canonical and Bézier spline shapes. Both were designed for pulse fidelity for the full UWB range while one was refined using genetic algorithm, trust region framework algorithm and square root raised cosine pulse. Time domain performances were measured and compared which demonstrates the efficiency of the optimized approach as well as the capability of the antennas to radiate signals with minimum distortion. Index Terms-Differential ultrawideband antennas, time domain measurements, square root raised cosine, fidelity factor, optimization methods.I.

Causal Pulses With Rectangular Spectral Content: A Tool for TD Analysis of UWB Antenna Performance

“…Many studies employ Gaussian pulses (or their derivatives), e.g., [2] and [3], or the square root raised cosine (SRRC) pulse, e.g., [4] and [5] the causality condition. Alternatively, [8] presented a family of model pulses whose mathematical form explicitly takes causality into account.…”