发明名称 |
Duty-to-voltage amplifier, FM receiver and method for amplifying a peak of a multiplexed signal |
摘要 |
A FM receiver comprises an IF filter, a demodulator and a decoder. The IF filter generates an RSSI and a FM modulated signal in response to a FM signal. The demodulator comprises a duty-to-voltage amplifier for amplifying a peak of a MPX signal. The duty-to-voltage amplifier comprises a current source, a switch and a current splitter. The current source generates a current. The switch controls a flow of the first current in response to a PWM signal. The current splitter splits the flow of the current into a sub-flow in response to the RSSI. The peak of the MPX signal is proportional to the sub-flow. The decoder receives the MPX signal to generate an audio signal to play sound.
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申请公布号 |
US2007243840(A1) |
申请公布日期 |
2007.10.18 |
申请号 |
US20060403740 |
申请日期 |
2006.04.13 |
申请人 |
CHANG HSIANG-HUI;CHEN CHIEH H |
发明人 |
CHANG HSIANG-HUI;CHEN CHIEH H. |
分类号 |
H04B1/16 |
主分类号 |
H04B1/16 |
代理机构 |
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地址 |
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