Compact Dual-Linear Polarized Wideband Antenna for VHF/UHF Band

A new compact dual-linearly polarized ultrawideband (UWB) antenna for VHF/UHF applications is proposed on this letter. The antenna is miniaturized thanks to inductive loading and lumped resistances. In addition, to reduce back-radiation and to optimize the impedance matching at low frequencies, a ferrite layer is placed close to the radiating element. This antenna provides broadband characteristics and unidirectional radiation patterns over the whole bandwidth with a length and a height respectively limited to $\lambda _{{\rm LF}/{6}}$ and $\lambda _{{\rm LF}/{13}}$ , where $\lambda _{\rm LF}$ is the wavelength at the lowest frequency of the operating band. Simulations and measurements are found to be in good agreements.