Notch filters in planar inverted F antennas for placing a plurality of antennas in close proximity
AssigneeNokia Corporation
InventorsEric Guetre, Jari Van Wonterghem
Life of this patent
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Abstract
Mobile terminals having a plurality of planar inverted-F antennas placed in close proximity of each other and methods of fabricating and using such mobile terminals are provided. Generally, planar inverted-F antennas, such as dual band CDMA, GPS, and Bluetooth antennas, cannot be placed in close proximity of each other without having interference. Accordingly, notch filters are provided in a dual band CDMA antenna to mitigate the interference and to facilitate isolation between the antennas.
Claims27
A mobile terminal, comprising:
- a housing;
- a plurality of antennas located within the housing, the plurality of antennas being located in close proximity of each other;
- and
- a notch filter located in at least one of the plurality of antennas.
A mobile terminal, comprising:
- a housing;
- and
- a dual band antenna and a Global Positioning System (GPS) antenna located within the housing in close proximity of each other, the dual band antenna having a GPS notch filter therein.
A method for placing a plurality of antennas in close proximity on a mobile terminal, comprising:
- placing a plurality of antennas at an optimal position on a mobile terminal, at least one of the plurality of antennas having a notch filter to mitigate interference between the antennas.
A method for determining a location of a mobile terminal, comprising:
- employing a mobile terminal, the mobile terminal having a plurality of antennas located in close proximity of each other, at least one of the plurality of antennas having a notch filter to mitigate interference between the plurality of antennas;
- determining location data for the mobile terminal from Global Positioning System (GPS) signals;
- placing a 911 call from the mobile terminal;
- and
- transmitting voice and location data from the mobile terminal to a 911 dispatcher.
A mobile terminal, comprising:
- a plurality of antennas placed in close proximity of each other on the mobile terminal;
- and
- means for mitigating interference between the plurality of antennas.
Dependencies are inferred from the claim text.