Electronic device having FM antenna and method for switching FM antenna
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United States of America Patent
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Feb 27, 2018
Issued Date -
N/A
app pub date -
Jun 13, 2017
filing date -
Jun 15, 2016
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An electronic device with a Frequency Modulation (FM) antenna includes an earphone jack, an FM chip, a switching unit, and a processing unit. The earphone jack includes a left channel pin, a right channel pin, and a ground pin. The FM chip receives an FM signal and outputs a Receive Signal Strength Indicator (RSSI) value of the FM signal to the processing unit. The processing unit receives the RSSI value, compares the RSSI value with a predetermined value, and controls the switching unit to select the left and right channel pins as a signal receiving point of the FM antenna or select the ground pin as the signal receiving point of the FM antenna according to a result of the comparison.
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