The driving-point impedance and the standing wave ratio of the center-fed planar dipole antenna may be calculated by the method of moments(MOM). Validity of its calculation is checked with the Improved King-Middleton Second-order approximation, the D.R. Rhodes' inverse method and the Induced EMF method for very narrow planar dipole having width of 0.01 times the wavelength. This MOM method is used to calculate the driving-point impedance of the two planar dipoles having its width of 1.5 cm, 2 cm and length of 4.7 cm, 9.3 cm over the frequency range from 2.25 GHz to 3.25 GHz and from 1.1 Ghz to 1.7 Ghz. These planar dipoles are fabricated and their driving-point impedances are measured for those frequency ranges. The measurement values of real and imaginary impedances are closely compared less than 10 percentages.
