Antenna for a radio telecommunications device
AssigneeResearch In Motion Limited
InventorsLizhong Zhu, Yihong Qi, Perry Jarmuszewski, Peter J. Edmonson, Steven Carkner
Life of this patent
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Abstract
A radio telecommunications antenna includes a telescoping antenna portion for substantially receiving an electromagnetic signal. The telescoping portion is attached by an antenna mast for conducting the electromagnetic signal. A dielectric spacer and an inductor are in electrical contact with the antenna mast. An RF connector is in electrical contact with the dielectric spacer, opposite the antenna mast, so as to form a capacitor. The RF connector is also in electrical contact with the inductor so that the capacitor and the inductor form an LC circuit with values selected to provide a predetermined impedance match with the remainder of the antenna.
Claims18
An antenna for a radio telecommunications device having components comprising:
- an antenna portion;
- an electrically conductive element in electromagnetic contact with to the antenna portion;
- a dielectric spacer in electromagnetic contact with the electrically conductive element;
- an inductor in electromagnetic contact with the electrically conductive element, and in electromagnetic contact with said dielectric spacer;
- and
- an RF connector in electromagnetic contact with said dielectric spacer, such that the electrically conductive element, the dielectric spacer, and the RF connector are components that form a capacitor, wherein the capacitor and the inductor are connected to form an LC circuit, wherein the RF connecter includes a plurality of posts which secure the dielectric spacer and increase the capacitance of the capacitor.
An antenna for a radio telecommunications device having components comprising:
- an antenna portion for substantially receiving an electromagnetic signal:
- an LC circuit comprising a capacitor and an inductor, wherein the capacitor comprises:
- an electrically conductive element connected to the antenna portion;
- a dielectric spacer in electromagnetic contact with the electrically conductive element;
- an RF connector in electromagnetic contact with said dielectric spacer;
- wherein the inductor is in electromagnetic contact with the electrically conductive element and in electromagnetic contact with said dielectric spacer, so as to form an LC circuit with capacitance and inductance selected to provide impedance matching between the antenna portion and the radio telecommunications device.
Dependencies are inferred from the claim text.