On-glass antenna with center-fed dipole operation

Claim 1

An antenna for mounting on a window, which comprises: an outer RF transfer member comprising a weather-resistant carrier having a first electrically conductive member on its underside for engagement with the outside of said window; a current-fed radiator adapted to be located on the outside of said window, said current-fed radiator having a proximal end and a distal end; means connecting said proximal end of said current-fed radiator to said first electrically conductive member whereby said distal end of said current-fed radiator extends upwardly and outwardly when the antenna is mounted on a window; an inner RF transfer member including a housing and having a second electrically conductive member on its underside for engagement with the inside of the window; a coaxial electrical cable having a main electrical conductor and a ground conductor, said main electrical conductor being in electrical engagement with said second electrically conductive member; said first electrically conductive member and said second electrically conductive member capacitively coupling said current-fed radiator to said main electrical conductor; a conductive radiating element carried by said inner RF transfer member, said conductive radiating element having a proximal end and a distal end; means connecting said proximal end of said conductive radiating element to said ground conductor, with said coaxial electrical cable extending generally between said proximal end of said current-fed radiator and said proximal end of said conductive radiating element with only said main electrical conductor being capacitively coupled to said current-fed radiator; said ground conductor being located only on the inside of said window and not being capacitively coupled to said current-fed radiator; said distal end of said conducive radiating element extending generally in the opposite direction from said distal end of said current-fed radiator, whereby said antenna resembles a center-fed dipole antenna with said conductive radiating element representing one of the radiating arms of the antenna and also substituting as a ground plane.