发明名称 |
FILTER FOR IMPROVED DRIVER CIRCUIT EFFICIENCY AND METHOD OF OPERATION |
摘要 |
This disclosure provides systems, methods and apparatus for increasing the efficiency of an amplifier when driven by a variable load. In one aspect a transmitter device is provided. The transmitter device includes a driver circuit characterized by an efficiency. The driver circuit is electrically connected to a transmit circuit characterized by an impedance. The transmitter device further includes a filter circuit electrically connected to the driver circuit and configured to modify the impedance to maintain the efficiency of the driver circuit at a level that is within 20% of a maximum efficiency of the driver circuit. The impedance is characterized by a complex impedance value that is within a range defined by a real first impedance value and a second real impedance value. A ratio of the first real impedance value to the second real impedance value is at least two to one.
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申请公布号 |
US2012242284(A1) |
申请公布日期 |
2012.09.27 |
申请号 |
US201213424834 |
申请日期 |
2012.03.20 |
申请人 |
WHEATLEY, III CHARLES EDWARD;LOW ZHEN NING;TONCICH STANLEY SLAVKO;NGUYEN NGO VAN;WHEELAND CODY B.;QUALCOMM INCORPORATED |
发明人 |
WHEATLEY, III CHARLES EDWARD;LOW ZHEN NING;TONCICH STANLEY SLAVKO;NGUYEN NGO VAN;WHEELAND CODY B. |
分类号 |
H02J7/00;H03F3/04;H03F3/217;H03H7/38 |
主分类号 |
H02J7/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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