Window glass antenna for automobile.

摘要

An antenna for an automobile rear window uses a coil (14,15) connected directly to a bus (5,6) for defogging heaters (3) used as an FM subsidiary antenna and a T-shaped impedance matching circuit (13) to provide a monotonic change of impedance within the FM frequency band. An inverted T-shaped FM main antenna (4) is employed in conjunction with the FM subsidiary antenna (3) to provide a diversity system to enhance receiving sensitivity in all directions. <IMAGE>