Antenna design using a slot architecture for global positioning system (GPS) applications
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Aug 12, 2003
Grant Date -
N/A
app pub date -
Jul 6, 2001
filing date -
Jul 6, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A GPS receiver includes a slot antenna having first and second surfaces. The second surface includes a semi-circular portion. The first and second surfaces define a slot within which is disposed dielectric material. The slot antenna is optimized for receiving GPS signals when in proximity to a human body. The relatively compact size of the slot antenna allows for the incorporation of the antenna into a small device that can be worn on or carried in close proximity to the body of a user. This type of antenna is not as sensitive to gain variations when in the proximity of a human body because the design has a wider aperture and thus operates better near the body. Further, this type of antenna is virtually omni-directional, i.e., it is not problematically sensitive to the location of the GPS signal source. Moreover, the design is such that the antenna arrangement can be oriented within a device in a way that maximizes the number of GPS satellites tracked.
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