| 发明名称 | Power amplifier controller | ||
| 摘要 | The present disclosure provides a power amplifier controller for starting up, operating, and shutting down a power amplifier. The power amplifier controller includes current sense amplifier circuitry adapted to monitor a main current of the power amplifier. A bias generator is also included and adapted to provide a predetermined standby bias voltage and an operational bias voltage based upon a main current level sensed by the current sense amplifier circuitry. The power amplifier controller further includes a sequencer adapted to control startup and shutdown sequences of the power amplifier. In at least one embodiment, the power amplifier is a gallium nitride (GaN) device, and the main current level sensed is a drain current of the GaN device. Moreover, the bias generator is a gate bias generator provided that the power amplifier is a field effect transistor (FET) device. | ||
| 申请公布号 | US9325281(B2) | 申请公布日期 | 2016.04.26 |
| 申请号 | US201314067019 | 申请日期 | 2013.10.30 |
| 申请人 | RF Micro Devices, Inc. | 发明人 | Levesque Chris;Kobayashi Kevin Wesley;Nadimpalli Praveen Varma;Clark Ricke W. |
| 分类号 | H03F3/21;H03F1/52;H03F1/30;H03F3/193;H03G3/30;H03F3/72 | 主分类号 | H03F3/21 |
| 代理机构 | Withrow & Terranova, P.L.L.C. | 代理人 | Withrow & Terranova, P.L.L.C. |
| 主权项 | 1. A power amplifier controller comprising: current sense amplifier circuitry adapted to monitor a main current of a power amplifier; a bias generator adapted to provide a predetermined standby bias voltage and operational bias voltage for the power amplifier based upon a main current level sensed by the current sense amplifier circuitry; a sequencer adapted to control startup and shutdown sequences of the power amplifier; and temperature compensation circuitry adapted to compensate a gate bias generator for ambient temperature fluctuations. | ||
| 地址 | Greensboro NC US | ||