On-glass antenna

DETAILED DESCRIPTION In accordance with the present invention, an antenna is provided for mounting on a glass plate with a radiator extending from one side of the glass plate and with an electrical connector and electrical wiring extending from the opposite side of the glass plate.
In this manner, energy is transferred through the glass plate and the drilling of a hole for connecting the radiator to the electrical connector is unnecessary.
The improvement of the present invention comprises a current fed radiator that is connected to an electrically conductive outer transfer plate.
The outer transfer plate is adapted for affixation to one side of the glass plate.
An electrically conductive inner transfer member is adapted for affixation to the other side of the glass plate in alignment with the outer transfer plate.
An electrically conductive field-cancelling member is provided for affixation to the other side of the glass plate in a spaced relation to the inner transfer member.
On the other side of the glass plate, there is also provided an electrical connector having a main electrical contact and a ground contact.
The main electrical contact is adapted for engagement with the inner transfer member and the ground contact is adapted for engagement with the field-cancelling member.
The electrical connector also includes means for coupling the electrical wiring to the main contact and to the ground contact.
In the illustrative embodiment, the current fed radiator comprises a one-quarter wavelength radiator, and greater bandwidth is provided by cophasing multiple radiators.
The multiple radiators are spaced elements which are generally parallel to each other and are adapted for extension at an angle of about 45.
degree.
with respect to the glass plate.
In the illustrative embodiment, the outer transfer plate comprises a weather-resistant carrier having an electrically conductive metal plate member on its underside for affixation to the one side of the glass plate.
The inner transfer member comprises an electrically conductive tape member for affixation to the other side of the glass plate