The surfaces current of Vshaped bowtie antennae were solved using method of moment employing the Rao Wilton Glisson (RWG) base function. The performance parameters of antennas subsequently were found. In the band 25 MHz4 GHz, the input impedance, reflection coefficient, antenna gain, radiated power, and directivity of Vshaped antennae with angles of 30°, 45°, 60°, 90°, and 180° were compared and analyzed. The results indicate that the smaller the angle of antennas is, the greater the radiated power is. High frequency power is radiated more effectively than low frequency power. The directivity of antennas strengthens as the angle decreases. The parameters of planar bowtie antennae change smoothly which is advantageous for radiation in low frequency bands.