BROAD BAND ANTENNA

PURPOSE:To obtain a very excellent pulse waveform by providing a radiating section comprising a parallel circuit consisting of an R and an L and a conductor plate to the tip of a dipole antenna in the vicinity of a feeding point of which a resistor is loaded. CONSTITUTION:The resistor 2 loaded near the feeding point 3 is connected to the dipole antenna 1 and the radiating section 6 comprising the parallel circuit 4 consisting of the R and L and the conductor plate 5 is connected to its tip. With the constitution above, a disturbing reflecting current is attenuated by the resistance loading and the energy is consumed in the R of the radiating section 6 because the impedance of the L is larger than that of the R at high frequencies, and conversely the energy passes through the L and stored in the conductor plate 5 as charge because the R is larger than the impedance of the L at low frequencies and dissipated in air therefrom, then very excellent pulse waveform is obtained.