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US 2011/0215971 A1Published application
Low frequency diversity antenna system
AssigneeResearch In Motion Limited
InventorQINJIANG RAO
Life of this patent
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Abstract
A diversity antenna system that operates within a low frequency band ranging from 700 Megahertz is disclosed. A plurality of antennas are folded onto a single printed circuit in a meander pattern configuration. Each antenna has an independent feed port and ground pin. The plurality of antennas are configured within a compact mobile phone space to produce a high isolation and low correlation at resonating frequencies within the 700 Megahertz frequency band.
Claims20
A mobile communication device comprising:
- a plurality of antennas coupled to a single planar dielectric substrate, each antenna comprising a plurality of radiating conductive strips configured in a meander pattern,
- wherein a first antenna of the plurality of antennas is disposed at a first corner of the dielectric substrate;
- a second antenna of the plurality of antennas is disposed at a second corner of the dielectric substrate opposite the first corner, and a third antenna of the plurality of antennas is disposed at a corner opposite the first antenna and diagonal with respect to the position of the second antenna;
- a plurality of feed ports, wherein a first feed port is coupled to the first antenna, a second feed port is coupled to the second antenna, and a third feed port is coupled to the third antenna;
- and
- a plurality of ground pins, wherein a first ground pin is coupled to the first antenna and positioned in a vertical coordinate direction with respect to the first feed port;
- a second ground pin is coupled to the second antenna and positioned in a horizontal coordinate direction with respect to the second feed port, and a third ground pin is coupled to the third antenna and positioned in a horizontal coordinate direction with respect to the second feed port.
4 more elements
An antenna arrangement for a mobile communication device, comprising:
- a plurality of antennas, each antenna configured in a meander pattern with a plurality of radiating conductive strips folded onto a single planar dielectric;
- and
- a plurality of feed ports, each feed port dedicated to exciting a single antenna of the plurality of antennas,
- wherein a number of antennas of the plurality of antennas radiate at a same time within a range of low frequencies.
1 more element
A communication network comprising:
- a plurality of antenna arrangements, each antenna arrangement comprising a plurality of radiating conductive strips configured in a meander pattern,
- wherein a first antenna in an antenna arrangement of the plurality of antenna arrangements is disposed at a first corner of the dielectric substrate;
- a second antenna of the plurality of antennas is disposed at a second corner of the dielectric substrate opposite the first corner, and a third antenna of the plurality of antennas is disposed at a corner opposite the first antenna and diagonal with respect to the position of the second antenna;
- a plurality of feed ports, wherein a first feed port is coupled to the first antenna, a second feed port is coupled to a second antenna, and a third feed port is coupled to a third antenna;
- and
- a plurality of ground pins, wherein a first ground pin is coupled to the first antenna and positioned in a vertical direction with respect to the first feed port;
- a second ground pin is coupled to a second antenna and positioned in a horizontal direction with respect to the second feed port, and a third ground pin is coupled to a third antenna and positioned in a horizontal direction with respect to the second feed port.
4 more elements
Dependencies are inferred from the claim text.