Planar Mercator Smith Chart: An Alternative Approach for Active and Passive Microwave Circuits

This letter proposes a Planar Mercator Smith chart (PMSC), which can be used to design and analyze both active and passive microwave circuits on a 2-D flat surface. The entire surface of the 3-D Smith chart comprises of whole impedance plane, which includes all possible loads is projected to the 2-D flat surface of the PMSC using the mathematical principle of Mercator projection. This eliminates the need for CAD software to be used as a design tool or visualization aid unlike a 3-D Smith chart, and it may be a useful graphical chart for solving microwave problems involving any type of load.