An FM wave antenna including a coaxial cable, a parallel conductor which are provided parallel to a metal conductor such as a vehicle body and an amplifier provided between the coaxial cable and the parallel conductor. The coaxial cable is made up of a central core and inductive outer sheath and one...http://www.google.ca/patents/US5019830?utm_source=gb-gplus-sharePatent US5019830 - Amplified FM antenna with parallel radiator and ground plane
