| 发明名称 | Noise reduction for envelope tracking | ||
| 摘要 | A direct current (DC)-DC converter, which includes a parallel amplifier, a radio frequency (RF) trap, and a switching supply, is disclosed. The switching supply includes switching circuitry and a first inductive element. The parallel amplifier has a feedback input and a parallel amplifier output. The switching circuitry has a switching circuitry output. The first inductive element is coupled between the switching circuitry output and the feedback input. The RF trap is coupled between the parallel amplifier output and a ground. | ||
| 申请公布号 | US9298198(B2) | 申请公布日期 | 2016.03.29 |
| 申请号 | US201213727911 | 申请日期 | 2012.12.27 |
| 申请人 | RF Micro Devices, Inc. | 发明人 | Kay Michael R.;Gorisse Philippe;Khlat Nadim;Folkmann Andrew F.;Nag Manbir Singh;Chiron Jean-Frederic |
| 分类号 | G05F1/46;H02M1/15;H03F1/02;H03F1/26;H03F3/19;H03F3/24;H02M3/158;H02M1/00 | 主分类号 | G05F1/46 |
| 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: a parallel amplifier having a feedback input and a parallel amplifier output; a radio frequency (RF) trap coupled between the parallel amplifier output and a ground; a switching supply comprising: switching circuitry having a switching circuitry output; anda first inductive element coupled between the switching circuitry output and the feedback input; and a direct current (DC) power source adapted to provide a DC source signal to the parallel amplifier and the switching supply. | ||
| 地址 | Greensboro NC US | ||