公开(公告)号：WO2014152903A2

公开(公告)日：2014-09-25

申请号：PCT/US2014/028178

申请日：2014-03-14

Applicant: RF MICRO DEVICES, INC

Inventor： CHIRON, Jean-Frederic ,  KHLAT, Nadim

IPC: H03F1/02

CPC classification number: H03F1/02 ,  H03F1/0222 ,  H03F3/189 ,  H03F3/20

Abstract: A radio frequency (RF) system includes an RF power amplifier (PA), which uses an envelope tracking power supply voltage to provide an RF transmit signal, which has an RF envelope; and further includes an envelope tracking power supply, which provides the envelope tracking power supply voltage based on a setpoint. RF transceiver circuitry, which includes envelope control circuitry and an RF modulator is disclosed. The envelope control circuitry provides the setpoint, such that the envelope tracking power supply voltage is clipped to form clipped regions and substantially tracks the RF envelope between the clipped regions, wherein a dynamic range of the envelope tracking power supply voltage is limited. The RF modulator provides an RF input signal to the RF PA, which receives and amplifies the RF input signal to provide the RF transmit signal.

Abstract translation: 射频（RF）系统包括RF功率放大器（PA），其使用包络跟踪电源电压来提供具有RF包络的RF发射信号; 并且还包括一个包络跟踪电源，它根据设定点提供包络跟踪电源电压。 公开了包括封装控制电路和RF调制器的RF收发器电路。 包络控制电路提供设定点，使得包络跟踪电源电压被限幅以形成限幅区域，并且基本上跟踪限幅区域之间的RF包络，其中包络跟踪电源电压的动态范围受到限制。 RF调制器向RF PA提供RF输入信号，RF PA接收并放大RF输入信号以提供RF发射信号。

公开(公告)号：WO2012166992A1

公开(公告)日：2012-12-06

申请号：PCT/US2012/040317

申请日：2012-05-31

Applicant: RF MICRO DEVICES, INC. ,  CHIRON, Jean-Frederic

Inventor： CHIRON, Jean-Frederic

IPC: H04B1/44

CPC classification number: H04B17/0005 ,  H03F1/34 ,  H03F3/195 ,  H03F3/24 ,  H03F3/245 ,  H03F2200/204 ,  H03F2200/207 ,  H03F2200/336 ,  H03F2200/408 ,  H04B17/11 ,  H04B2001/0433

Abstract: A method and apparatus for measuring a complex gain of a transmit path are disclosed. During a test mode, an IQ to radio frequency modulator modulates a quadrature RF carrier signal using a quadrature test signal. An RF to IQ down-converter down-converts a down-converter RF input signal to provide a quadrature down-converter output signal using the quadrature RF carrier signal. The down-converter RF input signal is based on the quadrature test signal and the gain of the transmit path. A digital frequency converter frequency converts the quadrature down-converter output signal, providing an averaged frequency converter output signal, which is a quadrature direct current signal representative of an amplitude of the quadrature test signal and the gain of the transmit path. Therefore, a measured gain of the transmit path is based on the amplitude of the quadrature test signal and averaged frequency converter output signal.

Abstract translation: 公开了一种用于测量发射路径的复增益的方法和装置。 在测试模式期间，IQ到射频调制器使用正交测试信号来调制正交RF载波信号。 RF到IQ下变换器对下变频器RF输入信号进行下变频，以使用正交RF载波信号提供正交下变频器输出信号。 下变换器RF输入信号基于正交测试信号和发送路径的增益。 数字频率转换器频率转换正交下变频器输出信号，提供平均变频器输出信号，其是表示正交测试信号的幅度和发送路径的增益的正交直流电流信号。 因此，发射路径的测量增益基于正交测试信号的振幅和平均的变频器输出信号。

公开(公告)号：WO2014152876A1

公开(公告)日：2014-09-25

申请号：PCT/US2014/028089

申请日：2014-03-14

Applicant: RF MICRO DEVICES, INC

Inventor： CHIRON, Jean-Frederic

IPC: H03F1/02

CPC classification number: H03F1/26 ,  H03F1/0222 ,  H03F1/0266 ,  H03F3/189 ,  H03F3/20

Abstract: A radio frequency (RF) power amplifier (PA) and an envelope tracking power supply are disclosed. The RF PA receives and amplifies an RF input signal to provide an RF transmit signal using an envelope power supply voltage. The envelope tracking power supply provides the envelope power supply voltage based on a setpoint, which has been constrained so as to limit a noise conversion gain (NCG) of the RF PA to not exceed a target NCG.

Abstract translation: 公开了射频（RF）功率放大器（PA）和包络跟踪电源。 RF PA接收并放大RF输入信号，以使用包络电源电压提供RF发射信号。 信封跟踪电源基于设定点提供包络电源电压，该设定点已被约束，以便将RF PA的噪声转换增益（NCG）限制为不超过目标NCG。