公开(公告)号：US20130141063A1

公开(公告)日：2013-06-06

申请号：US13747694

申请日：2013-01-23

Applicant: RF Micro Devices, Inc.

Inventor： Michael R. Kay ,  Nadim Khlat

IPC: G05F1/46

CPC classification number: G05F1/468 ,  H02M1/10 ,  H02M2001/0067 ,  H03F1/0211 ,  H03F1/0227 ,  H03F1/26 ,  H03F3/24 ,  H03F2200/351 ,  H03F2200/451 ,  H03F2200/504 ,  H04B15/005

Abstract: This disclosure relates to radio frequency (RF) power converters and methods of operating the same. In one embodiment, an RF power converter includes an RF switching converter, a low-drop out (LDO) regulation circuit, and an RF filter. The RF filter is coupled to receive a pulsed output voltage from the RF switching converter and a supply voltage from the LDO regulation circuit. The RF filter is operable to alternate between a first RF filter topology and a second RF filter topology. In the first RF filter topology, the RF filter is configured to convert the pulsed output voltage from a switching circuit into the supply voltage. The RF filter in the second RF filter topology is configured to filter the supply voltage from the LDO regulation circuit to reduce a ripple variation in a supply voltage level of the supply voltage. As such, the RF filter provides greater versatility.

公开(公告)号：US20130135045A1

公开(公告)日：2013-05-30

申请号：US13684826

申请日：2012-11-26

Applicant: RF Micro Devices, Inc.

Inventor： Nadim Khlat

IPC: H03G1/04

CPC classification number: H03G1/04 ,  H03F1/0227 ,  H03F1/3247

Abstract: Circuitry, which includes data memory and processing circuitry, is disclosed. The data memory is used to store look-up table (LUT)-based radio frequency (RF) power amplifier (PA) calibration data. The processing circuitry converts at least a portion of the LUT-based RF PA calibration data to provide monotonic response curve-based data. As such, a magnitude of an envelope power supply control signal is determined based on a magnitude of an RF input signal using the monotonic response curve-based data.

Abstract translation: 公开了包括数据存储器和处理电路的电路。 数据存储器用于存储基于查找表（LUT）的射频（RF）功率放大器（PA）校准数据。 处理电路将基于LUT的RF PA校准数据的至少一部分转换为提供基于单调响应曲线的数据。 因此，使用基于单调响应曲线的数据，基于RF输入信号的大小来确定包络电源控制信号的幅度。