Single feed circularly polarized modified triangular microstrip antennas

Two new configurations are proposed to obtain circular polarisation using single feed by modifying an equilateral triangle. In one case, the asymmetry is introduced by removing a small triangle at the center of the base to form a V-shape and in the other case, a small triangle is removed from the tip to form a trapezoid. The modified triangle is analyzed by the multiport network model using segmentation and desegmentation methods.<>