发明名称 |
Power tracker for multiple transmit signals sent simultaneously |
摘要 |
Techniques for generating a power tracking supply voltage for a circuit (e.g., a power amplifier) are disclosed. The circuit may process multiple transmit signals being sent simultaneously on multiple carriers at different frequencies. In one exemplary design, an apparatus includes a power tracker and a power supply generator. The power tracker determines a power tracking signal based on inphase (I) and quadrature (Q) components of a plurality of transmit signals being sent simultaneously. The power supply generator generates a power supply voltage based on the power tracking signal. The apparatus may further include a power amplifier (PA) that amplifies a modulated radio frequency (RF) signal based on the power supply voltage and provides an output RF signal. |
申请公布号 |
US9608675(B2) |
申请公布日期 |
2017.03.28 |
申请号 |
US201313764328 |
申请日期 |
2013.02.11 |
申请人 |
QUALCOMM INCORPORATED |
发明人 |
Dorosenco Alexander |
分类号 |
H04B1/04;H04W52/52;H03F1/02;H03F3/195;H03F3/21;H03F3/24;H03F3/68 |
主分类号 |
H04B1/04 |
代理机构 |
Haynes and Boone, LLP |
代理人 |
Haynes and Boone, LLP |
主权项 |
1. An apparatus comprising:
a power tracker configured to determine a single power tracking signal based on a plurality of inphase (I) and quadrature (Q) components of a plurality of carrier aggregated transmit signals being sent simultaneously, wherein the power tracker receives the plurality of I and Q components corresponding to the plurality of carrier aggregated transmit signals and generates the single power tracking signal based on a combination of the plurality of I and Q components, wherein the plurality of carrier aggregated transmit signals comprise Orthogonal Frequency Division Multiplexing (OFDM) or Single Carrier Frequency Division Multiple Access (SC-FDMA) signals; a power supply generator configured to generate a single power supply voltage based on the single power tracking signal; and a power amplifier configured to receive the single power supply voltage and the plurality of carrier aggregated transmit signals being sent simultaneously to produce a single output radio frequency (RF) signal. |
地址 |
San Diego CA US |