公开(公告)号：US20130154729A1

公开(公告)日：2013-06-20

申请号：US13714600

申请日：2012-12-14

Applicant: RF Micro Devices, Inc.

Inventor： Andrew F. Folkmann ,  Ramon Antonio Beltran Lizarraga

IPC: H03G3/20 ,  H03F3/189 ,  H03F3/68

CPC classification number: H03G3/20 ,  H03F1/0288 ,  H03F3/189 ,  H03F3/68 ,  H03F3/72 ,  H03G3/3042

Abstract: Radio frequency (RF) amplification devices and methods of amplifying RF signals are disclosed. In one embodiment, an RF amplification device includes a control circuit and a Doherty amplifier configured to amplify an RF signal. The Doherty amplifier includes a main RF amplification circuit and a peaking RF amplification circuit. The control circuit is configured to activate the peaking RF amplification circuit in response to the RF signal reaching a threshold level. In this manner, the activation of the peaking RF amplification circuit can be precisely controlled.

Abstract translation: 公开了射频（RF）放大装置和放大RF信号的方法。 在一个实施例中，RF放大装置包括配置成放大RF信号的控制电路和Doherty放大器。 Doherty放大器包括主RF放大电路和峰值RF放大电路。 控制电路被配置为响应于RF信号达到阈值水平激活峰值RF放大电路。 以这种方式，可以精确地控制峰值RF放大电路的激活。

公开(公告)号：US20130147445A1

公开(公告)日：2013-06-13

申请号：US13761500

申请日：2013-02-07

Applicant: RF Micro Devices, Inc.

Inventor： Chris Levesque ,  David Zimlich ,  Jean-Christophe Berchtold

IPC: G05F1/595

CPC classification number: G05F1/595 ,  H03F1/0227 ,  H03F1/0261 ,  H03F1/0277 ,  H03F3/195 ,  H03F3/211 ,  H03F3/245 ,  H03F3/602 ,  H03F3/72 ,  H03F2200/171 ,  H03F2200/222 ,  H03F2200/27 ,  H03F2200/318 ,  H03F2200/336 ,  H03F2200/387 ,  H03F2200/411 ,  H03F2200/414 ,  H03F2200/417 ,  H03F2200/451 ,  H03F2200/504 ,  H03F2200/534 ,  H03F2200/537 ,  H03F2200/541 ,  H03F2203/21106 ,  H03F2203/21142 ,  H03F2203/21157

Abstract: DC to DC converter circuitry includes a dual phase charge pump and at least one pair of multiplier phase circuits. The dual phase charge pump is coupled to each one of the at least one pair of multiplier circuits and adapted to receive a DC input voltage and only four control signals, and produce a stepped-up output voltage. Each one of the at least one pair of multiplier phase circuits are adapted to receive the stepped-up output voltage, a cross-coupled control signal from the other multiplier phase circuit in the pair of multiplier phase circuits, and a different one of the control signals and further multiply the stepped-up output voltage to produce a multiplied stepped-up output voltage with a magnitude that is approximately three times that of the DC input voltage or greater.

Abstract translation: DC至DC转换器电路包括双相电荷泵和至少一对乘法器相位电路。 双相电荷泵耦合到至少一对乘法器电路中的每一个，并且适于接收直流输入电压和仅四个控制信号，并产生升压输出电压。 所述至少一对乘法器相位电路中的每一个适于接收升压输出电压，来自所述一对乘法器相位电路中的另一乘法器相位电路的交叉耦合控制信号，以及控制中的不同的一个 信号，并进一步乘以升压输出电压，以产生增大的升压输出电压，其幅度大约是直流输入电压的三倍或更大。

公开(公告)号：US20130141064A1

公开(公告)日：2013-06-06

申请号：US13747749

申请日：2013-01-23

Applicant: RF Micro Devices, Inc.

Inventor： Michael R. Kay ,  Nadim Khlat

IPC: G05F1/46

CPC classification number: G05F1/46 ,  H02M1/14 ,  H02M2001/0067 ,  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.

Abstract translation: 本公开涉及射频（RF）功率转换器及其操作方法。 在一个实施例中，RF功率转换器包括RF开关转换器，低压降（LDO）调节电路和RF滤波器。 RF滤波器被耦合以接收来自RF开关转换器的脉冲输出电压和来自LDO调节电路的电源电压。 RF滤波器可操作以在第一RF滤波器拓扑和第二RF滤波器拓扑之间交替。 在第一RF滤波器拓扑中，RF滤波器被配置为将来自开关电路的脉冲输出电压转换成电源电压。 第二RF滤波器拓扑中的RF滤波器被配置为对来自LDO调节电路的电源电压进行滤波，以减少电源电压的电源电压电平中的纹波变化。 因此，RF滤波器提供更大的通用性。

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。

公开(公告)号：US20130043944A1

公开(公告)日：2013-02-21

申请号：US13656997

申请日：2012-10-22

Applicant: RF Micro Devices, Inc.

Inventor： David E. Jones

IPC: H03F3/68

CPC classification number: H03F1/0227 ,  H03F1/0261 ,  H03F1/0277 ,  H03F3/195 ,  H03F3/211 ,  H03F3/245 ,  H03F3/602 ,  H03F3/72 ,  H03F2200/171 ,  H03F2200/222 ,  H03F2200/27 ,  H03F2200/318 ,  H03F2200/336 ,  H03F2200/387 ,  H03F2200/411 ,  H03F2200/414 ,  H03F2200/417 ,  H03F2200/451 ,  H03F2200/504 ,  H03F2200/534 ,  H03F2200/537 ,  H03F2200/541 ,  H03F2203/21106 ,  H03F2203/21142 ,  H03F2203/21157

Abstract: A first radio frequency (RF) power amplifier (PA) stage, a second RF PA stage, and an alpha RF switch are disclosed. The first RF PA stage provides a first RF output signal. During a first alpha mode, the alpha RF switch forwards the first RF output signal to the second RF PA stage, such that the first RF PA stage functions as a driver stage and the second RF PA stage functions as a final stage. However, during one of a group of alpha modes, the alpha RF switch forwards the first RF output signal to provide a corresponding one of a group of alpha transmit signals, such that the first RF PA stage functions as a final stage. Further, the first alpha mode is not one of the group of alpha modes.

Abstract translation: 公开了第一射频（RF）功率放大器（PA）级，第二RF PA级和αRF开关。 第一RF PA级提供第一RF输出信号。 在第一alpha模式期间，αRF开关将第一RF输出信号转发到第二RF PA级，使得第一RF PA级用作驱动级，而第二RF PA级用作最后级。 然而，在一组α模式之一中，α射频开关转发第一RF输出信号以提供一组α发射信号中的相应一个，使得第一RF PA级作为最后级。 此外，第一个alpha模式不是Alpha模式中的一个。

公开(公告)号：US20040223540A1

公开(公告)日：2004-11-11

申请号：US10434252

申请日：2003-05-08

Applicant: RF MICRO DEVICES, INC.

Inventor： Peijun Shan

IPC: H04B001/707

CPC classification number: H04B1/70757 ,  H04B1/7115 ,  H04L25/0212

Abstract: The present invention provides a method and apparatus for estimating a multipath channel with sub-chip resolution. In general, secondary signals are characterized based on correlating a received signal including multipath signals, which include a main and the secondary signals, with a pseudo-random noise code. An inverse filter operates to increase a temporal resolution of results of the correlation of the received signal and the pseudo-random noise code, thereby allowing secondary multipath signals occurring within the same chip interval as another multipath signal to be detected and estimated correctly.

Abstract translation: 本发明提供一种用于估计具有子芯片分辨率的多径信道的方法和装置。 通常，二次信号的特征在于，将包括主信号和次信号的多径信号的接收信号与伪随机噪声码相关。 逆滤波器用于增加接收信号和伪随机噪声码的相关结果的时间分辨率，从而允许在与另一个多径信号相同的码片间隔内发生的次多径信号被正确检测和估计。

公开(公告)号：US10312960B2

公开(公告)日：2019-06-04

申请号：US14926116

申请日：2015-10-29

Applicant: RF Micro Devices, Inc.

Inventor： Nadim Khlat

IPC: H04B1/44 ,  H04L5/14 ,  H04B1/00 ,  H03H7/46 ,  H03H11/34 ,  H04L5/00

Abstract: A switchable RF transmit/receive (TX/RX) multiplexer, which includes a group of RF TX bandpass filters, a group of RF TX switching elements, and a group of RF RX bandpass filters; is disclosed. The group of RF TX bandpass filters includes a first RF TX bandpass filter and a second RF TX bandpass filter, such that each of the first RF TX bandpass filter and the second RF TX bandpass filter is coupled to a first filter connection node. The group of RF TX switching elements includes a first RF TX switching element coupled between the first filter connection node and a first common connection node, which is coupled to a first RF antenna. Each of the group of RF RX bandpass filters is coupled to the first common connection node.

公开(公告)号：US10305443B2

公开(公告)日：2019-05-28

申请号：US15087409

申请日：2016-03-31

Applicant: RF Micro Devices, Inc.

Inventor： Kushal Bhattacharjee

IPC: H03H9/25 ,  H03H9/02 ,  H03H3/08 ,  H03H3/007 ,  H03H3/02 ,  H03H9/13 ,  H03H9/145 ,  H03H9/17 ,  H03H9/00 ,  H03H9/15 ,  H03H9/05

Abstract: A micro-electrical-mechanical system (MEMS) guided wave device includes a plurality of electrodes arranged below a piezoelectric layer (e.g., either embedded in a slow wave propagation layer or supported by a suspended portion of the piezoelectric layer) and configured for transduction of a lateral acoustic wave in the piezoelectric layer. The piezoelectric layer permits one or more additions or modifications to be made thereto, such as trimming (thinning) of selective areas, addition of loading materials, sandwiching of piezoelectric layer regions between electrodes to yield capacitive elements or non-linear elastic convolvers, addition of sensing materials, and addition of functional layers providing mixed domain signal processing utility.

公开(公告)号：US10250290B2

公开(公告)日：2019-04-02

申请号：US13953808

申请日：2013-07-30

Applicant: RF Micro Devices, Inc.

Inventor： Nadim Khlat

IPC: H04B1/44 ,  H01P1/15 ,  B81B7/02

Abstract: This disclosure relates generally to radio frequency (RF) front-end circuitry for different types of carrier aggregation, along with methods of operating the same. In one embodiment, the RF front-end circuitry includes a first diplexer, a second diplexer, first antenna selection circuitry, and second antenna selection circuitry. In order to maintain adequate isolation between high bands and low bands but provide carrier aggregation, the first antenna selection circuitry is configured to selectively couple each of a first plurality of RF ports to any one of a first low band port in the first diplexer and a second low band port in the second diplexer, while the second antenna selection circuitry is configured to selectively couple each of the second plurality of RF ports to any one of a first high band port in the first diplexer and a second high band port in the second diplexer.