| 发明名称 | Bi-directional power supply signal based linear amplifier | ||
| 摘要 | Circuitry, which includes a linear amplifier, is disclosed. The linear amplifier has a linear amplifier output and includes an input amplifier stage and an output amplifier stage. The output amplifier stage at least partially provides an envelope power supply voltage to a radio frequency (RF) power amplifier (PA) via an envelope power supply output using a selected one of a group of linear amplifier power supply signals. The group of linear amplifier power supply signals includes at least a first bi-directional power supply signal. The input amplifier stage selects the one of the group of linear amplifier power supply signals based on the envelope power supply voltage and a setpoint of the envelope power supply voltage. | ||
| 申请公布号 | US9178472(B2) | 申请公布日期 | 2015.11.03 |
| 申请号 | US201414176611 | 申请日期 | 2014.02.10 |
| 申请人 | RF Micro Devices, Inc. | 发明人 | Folkmann Andrew F.;Khlat Nadim;Kay Michael R. |
| 分类号 | H03G3/20;H03F1/02;H03F3/19;H03F3/21;H03F3/24 | 主分类号 | H03G3/20 |
| 代理机构 | Withrow & Terranova, P.L.L.C. | 代理人 | Withrow & Terranova, P.L.L.C. |
| 主权项 | 1. Circuitry comprising: an output amplifier stage configured to at least partially provide an envelope power supply voltage to a radio frequency (RF) power amplifier (PA) via an envelope power supply output using a selected one of a plurality of linear amplifier power supply signals, such that the plurality of linear amplifier power supply signals includes at least a first bi-directional power supply signal; and an input amplifier stage configured to select the one of the plurality of linear amplifier power supply signals based on the envelope power supply voltage and a setpoint of the envelope power supply voltage, such that the input amplifier stage and the output amplifier stage form a linear amplifier, which has a linear amplifier output. | ||
| 地址 | Greensboro NC US | ||