A lumped circuit for wideband impedance matching of a non-resonant, short dipole or monopole antenna

In this study we have presented a new technique for wideband impedance-matching using a lumped circuit for relatively short non-resonant dipoles or monopoles. The belief is that one simple fixed-topology network can be used to perform wideband impedance matching for a variety of dipole-like antennas, thereby simplifying the matching process. The particular circuit suggested in the present paper includes five lumped components with common manufacturing values at VHF and UHF center frequencies. The circuit is not to be used on resonant dipoles/monopoles or to dipoles/monopoles above the first resonance. Its phase characteristics and the noise figure need to be optimized separately.