New design method of impedance matching networks based on tapered lines using generalized superellipses

One method used for designing RF and microwave impedance matching networks is based on tapered lines. This paper shows a simple method to design smooth tapers that take into account the dispersion of the line and the required design bandwidth simultaneously. The taper is designed through optimization of very few parameters. As a result, the reflection coefficient of the taper can be optimally adapted to a given specific mask using the prescribed value of physical length. Experimental results are included for validation of the proposed design method.