发明名称 |
CIRCUITS AND METHODS FOR PROVIDING A CONTROL VOLTAGE AND IMPROVING SWITCH PERFORMANCE IN RADIO FREQUENCY (RF) MODULES |
摘要 |
An apparatus comprises at least one transmit amplifier and rectification circuitry located in the at least one transmit amplifier, which is configured to receive a RF signal and provide a rectified voltage, which is selectably added to a voltage supplied by a battery to generate a DC voltage supply signal that is a function of RF power level. A controller is configured to select between providing the VBAT or the VSupply signal to a transmit switch depending on one or more of a logic state and a mode of operation. An alternate apparatus comprises a charge pump circuit configured to quickly raise a voltage supplied to it and store the output voltage on a capacitor and then either shift a first frequency provided by a charge pump oscillator to a lower second frequency or turn off a charge pump clock to maintain a voltage on the capacitor during a transmit mode. |
申请公布号 |
US2012263258(A1) |
申请公布日期 |
2012.10.18 |
申请号 |
US201213444390 |
申请日期 |
2012.04.11 |
申请人 |
LABELLE MICHAEL S.;MOORE MICHAEL SHANE;BENBRIK JAMEL;THOMAS MICHAEL B.;RICHARD STEPHEN E.;RF MICRO DEVICES, INC. |
发明人 |
LABELLE MICHAEL S.;MOORE MICHAEL SHANE;BENBRIK JAMEL;THOMAS MICHAEL B.;RICHARD STEPHEN E. |
分类号 |
H04B1/04;H04L27/04 |
主分类号 |
H04B1/04 |
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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