RF TRANSMISSION CIRCUIT AND ELECTRONIC DEVICE AND METHOD FOR SAVING POWER THEREOF
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United States of America Patent
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Issued Date -
Jun 27, 2013
app pub date -
May 31, 2012
filing date -
Dec 21, 2011
priority date (Note) -
Abandoned
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Abstract
A radio frequency (RF) transmission circuit and an electronic device and a method for saving power thereof are provided. The RF transmission circuit includes: an antenna, at least one controller, a first path, a second path and a signal switching unit. The controller generates and/or receives RF signal. The controller has a determination function determining power of the RF signal and a switching function selecting or changing the transmission path of the RF signal as the first path and the second path. The first path transmits the RF signal to the antenna. The second path has a power amplifier to amplify the power of the RF signal and then transmit the amplified RF signal to the antenna. The signal switching unit selectively connects the antenna to the first path or the second path. When the first path is selected, the controller turns off the power amplifier.
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