公开(公告)号：US08897729B1

公开(公告)日：2014-11-25

申请号：US14066087

申请日：2013-10-29

Applicant: Marvell International Ltd.

Inventor： Li Lin ,  Arnab Kumar Mitra ,  Daxiao Yu ,  Harish Ramamurthy ,  Sergey Timofeev ,  Lance Nagamine ,  Brian Bosso

IPC: H01Q11/12 ,  H04B1/04 ,  H04W52/08

CPC classification number: H04W52/08 ,  H04B1/04 ,  H04B17/13 ,  H04B2001/0416

Abstract: A radio frequency transmitting system which includes first and second amplifiers, a power detector, and a calibration module. The first amplifier amplifies an input signal to generate an amplified signal in accordance with a programmable gain. The second amplifier transmits an output signal based on the amplified signal. The output signal is transmitted at a particular power by the second amplifier. The power detector measures the particular power at which the output signal is transmitted by the second amplifier. The calibration module adjusts the programmable gain of the first amplifier by a calibration offset so that the particular power measurement matches a predetermined power. The calibration module includes offset generation modules that each generate a respective calibration offset candidate based on the particular power measurement. The calibration module also includes a selection module that selects, based on the predetermined power, one of the calibration offset candidates as the calibration offset.

Abstract translation: 一种射频发射系统，包括第一和第二放大器，功率检测器和校准模块。 第一放大器放大输入信号以根据可编程增益产生放大信号。 第二放大器基于放大信号发送输出信号。 输出信号由第二放大器以特定功率发送。 功率检测器测量第二放大器输出信号传输的特定功率。 校准模块通过校准偏移来调节第一放大器的可编程增益，使得特定功率测量与预定功率匹配。 校准模块包括偏移生成模块，每个偏移生成模块基于特定功率测量产生相应的校准偏移候选。 校准模块还包括选择模块，其基于预定功率选择校准偏移候选中的一个作为校准偏移。