公开(公告)号：US20130122956A1

公开(公告)日：2013-05-16

申请号：US13677265

申请日：2012-11-14

Applicant: QUALCOMM INCORPORATED

Inventor： MeeLan LEE ,  Wilson FOK ,  David K. SU

IPC: H04W52/04

CPC classification number: H04W52/04 ,  H04B1/005 ,  H04B17/13 ,  H04B17/14 ,  H04B17/19 ,  H04B17/21 ,  H04W52/52

Abstract: Functionality can be implemented to calibrate the output transmit power of a power amplifier of a network device without the use of test equipment. An RF signal can be transmitted at the saturated output power (of a power amplifier) from a transmitter unit to a receiver unit of the network device via a loopback path. A received power of the RF signal received via the loopback path can be measured. The loopback gain associated with the network device is determined based on the saturated output power and the measured received power. The output transmit power can be calibrated by iteratively decreasing the output transmit power by an unknown value, transmitting a new RF signal via the loopback path at the decreased output transmit power, measuring the new received power, and calculating the decreased output transmit power using the loopback gain and the measured new received power.

Abstract translation: 可以实现功能来校准网络设备的功率放大器的输出发射功率，而不使用测试设备。 RF信号可以通过环回路径从发射机单元到网络设备的接收机单元的饱和​​输出功率（功率放大器的饱和输出功率）传输。 可以测量通过回送路径接收的RF信号的接收功率。 基于饱和输出功率和测量的接收功率确定与网络设备相关联的环回增益。 可以通过将输出发射功率迭代地减小未知值来校准输出发射功率，通过减小的输出发射功率的环回路径发送新的RF信号，测量新的接收功率，以及使用 环回增益和测量的新接收功率。