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. |
申请公布号 |
EP2689379(A1) |
申请公布日期 |
2014.01.29 |
申请号 |
EP20120715558 |
申请日期 |
2012.03.21 |
申请人 |
QUALCOMM INCORPORATED |
发明人 |
WHEATLEY III, CHARLES EDWARD;LOW, ZHEN NING;TONCICH, STANLEY SLAVKO;NGUYEN, NGO VAN;WHEELAND, CODY B. |
分类号 |
G06K7/00 |
主分类号 |
G06K7/00 |
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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