Windowpane antenna combined with a resisting heating area

An antenna disposed on a windowpane of a motor vehicle having an electrically conductive motor vehicle body and a source of DC power (25) from an on-board electrical system comprising:

• a) at least one heating field disposed on said windowpane (23);
• and
• b) at least two feeding networks (19, 20) for feeding heating current (24) into said heating field (2) wherein each of said feeding networks comprises:
• i) at least one magnetic core (9, 10);
• ii) a primary winding (5, 6) mounted on said magnetic core, (9, 10) said primary winding (5, 6) having a sufficient number of turns to provide a high frequency high resistence connection to said heating field (2);
• iii) at least one field compensation winding (13, 14) mounted on said at least one magnetic core (9, 10);
• iv) a compensating current source (15, 16) is connected to said field compensation winding having no substantial effect in reducing inductive high resistance of said feeding network (19, 20), said field compensation winding (13, 14) receiving a flow of compensating direct current from said current source so that the magnetic fields resulting from the number of turns and direction of turns of the field compensation windings (13, 14) and said primary winding (5, 6) receiving the flow of heating current and said compensating current acting in an opposite direction relative to one another in said magnetic core so as to compensate the magnetic fields in said magnetic core so that there is no interfering magnetic core saturation effect, whereby the antenna is formed either by said heating field (2) or by a separate wire-shaped or flat conductor (1) on the windowpane (23) adjacent to said heating field.