Design method for antenna arrays on cars with electrically short elements under incorporation of the radiation properties of the car body

A new type of car phone antenna at the upper rim of the rear window is presented being realized as array with narrowly spaced short antenna elements. For this a combined method of measurement and computer optimization was developed. Thus the disadvantage of a reduced radiation in the front direction going along with a single small antenna at the same location is overcome and an almost invisible and highly efficient phone antenna is realized.