Multi-antenna wearable device
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United States of America Patent
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Jun 25, 2019
Grant Date -
Feb 15, 2018
app pub date -
Aug 9, 2016
filing date -
Aug 9, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
A multi-antenna device may include a high-frequency antenna, a low-frequency antenna, and a patterned metal ground plane defining channels having capacitors operable a short circuit for the high-frequency antenna and an open-circuit for the low-frequency antenna. The high-frequency antenna, the low-frequency antenna, and the patterned metal ground plane may be coupled to a multi-layer printed circuit board of the multi-antenna device. The channels of the metal ground plane conductor may have dimensions to, themselves, operate as the capacitors. In other aspects, discrete capacitors may be positioned on the metal ground plane proximate to the channels to reduce eddy currents during operation of the low-frequency antenna.
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