Multiband antenna
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United States of America Patent
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Jul 20, 2004
Issued Date -
N/A
app pub date -
Sep 23, 2002
filing date -
Sep 23, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A multi-band antenna comprising two or more low frequency radiators dimensioned to operate in a low frequency band, and two or more high frequency radiators dimensioned to operate in a high frequency band. Each high frequency radiator is substantially coplanar with the low frequency radiators, and is formed in a spiral with the high and low frequency radiators interleaved. A hybrid feed network has two or more antenna ports, each antenna port being coupled with a low frequency radiator and a high frequency radiator. The antenna can be used for receiving GPS L1/L2 signals. The antenna is configured to send and/or receive circularly polarized radiation.
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