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公开(公告)号：US20160087337A1
公开(公告)日：2016-03-24
申请号：US14843465
申请日：2015-09-02
Applicant: RF Micro Devices, Inc.
Inventor： Nadim Khlat
CPC classification number: H01Q3/267 , B60L11/182 , B60L2240/547 , B60L2240/549 , B60L2270/147 , H02J7/0027 , H02J7/025 , H02J50/10 , Y02T10/7011 , Y02T10/7072 , Y02T90/122 , Y02T90/14
Abstract: Antenna array calibration for wireless charging is disclosed. In one aspect, an initial calibration sequence is performed each time a wireless charging station is powered on. The initial calibration sequence utilizes a reference antenna element, which is an antenna element randomly selected from a plurality of antenna elements in the wireless charging station, to determine relative receiver phase errors between the reference antenna element and each of the other antenna elements in an antenna array. In another aspect, a training sequence is performed after completing the initial calibration sequence to determine total relative phase errors between the reference antenna element and each of the other antenna elements in the antenna array. Adjustments can then be made to match respective total relative phase errors among the plurality of antenna elements to achieve phase coherency among the plurality of antenna elements for improved wireless charging power efficiency.
Abstract translation: 公开了用于无线充电的天线阵列校准。 在一个方面，每当无线充电站上电时，执行初始校准序列。 初始校准序列使用参考天线元件，其是从无线充电站中的多个天线元件中随机选择的天线元件，以确定参考天线元件与天线中的每个其它天线元件之间的相对接收器相位误差 数组。 在另一方面，在完成初始校准序列之后执行训练序列，以确定参考天线元件与天线阵列中的每个其它天线元件之间的总相对相位误差。 然后可以进行调整以匹配多个天线元件中的相应的总相对相位误差，以实现多个天线元件之间的相位一致性，以改善无线充电功率效率。
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公开(公告)号：US20160065167A1
公开(公告)日：2016-03-03
申请号：US14840216
申请日：2015-08-31
Applicant: RF Micro Devices, Inc.
Inventor： Marcus Granger-Jones , John Robert Siomkos , Jeppe Korshøj Bendixen , John Avery Capwell , Jayanti Jaganatha Rao
CPC classification number: H01F38/14 , H01F21/12 , H01F2038/146 , H03H7/465 , H03H7/48
Abstract: This disclosure relates generally to directional couplers. In one embodiment, a directional coupler includes a first port, a second port, a third port, a first inductive element, a second inductive element, a first switchable path, and a second switchable path. The first inductive element is coupled between the first port and the second port, while the second inductive element is mutually coupled to the first inductive element. The first switchable path is configured to be opened and closed, wherein the first switchable path is coupled between a first location of the second inductive element and the third port. The second switchable path is configured to be opened and closed, wherein the second switchable path is coupled between a second location of the second inductive element and the third port. In this manner, a directivity of the directional coupler can be switched between a forward direction and a reverse direction.
Abstract translation: 本公开一般涉及定向耦合器。 在一个实施例中，定向耦合器包括第一端口，第二端口，第三端口，第一感应元件，第二感应元件，第一可切换路径和第二可切换路径。 第一电感元件耦合在第一端口和第二端口之间，而第二电感元件相互耦合到第一电感元件。 第一可切换路径被配置为打开和关闭，其中第一可切换路径耦合在第二电感元件的第一位置和第三端口之间。 第二可切换路径被配置为打开和关闭，其中第二可切换路径耦合在第二电感元件的第二位置和第三端口之间。 以这种方式，定向耦合器的方向性可以在正向和反向之间切换。
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公开(公告)号：US20160065137A1
公开(公告)日：2016-03-03
申请号：US14836634
申请日：2015-08-26
Applicant: RF Micro Devices, Inc.
Inventor： Nadim Khlat
CPC classification number: H04B1/0475 , H03F1/0227 , H03F1/3241 , H03F3/19 , H03F3/245 , H03F2200/102 , H03F2200/451 , H04B2001/0416
Abstract: Envelope power supply circuitry includes an envelope power converter circuitry and envelope tracking circuitry. The envelope power converter circuitry receives an envelope power converter control signal from the envelope tracking circuitry and a supply voltage and provides an envelope power supply signal for an amplifier based thereon. In a first mode of operation, the envelope power converter control signal is provided such that the envelope power supply signal causes the gain of the amplifier to remain substantially constant over a range of input power provided to the amplifier. In a second mode of operation, the envelope power converter control signal is provided such that the envelope power supply signal remains substantially constant for values within the range of input power below a predetermined threshold, and such that the envelope power supply signal causes the gain of the amplifier to remain substantially constant for other values.
Abstract translation: 信封电源电路包括一个信封电源转换器电路和信封跟踪电路。 信封功率转换器电路从包络跟踪电路接收包络功率转换器控制信号和电源电压，并且基于此为放大器提供包络电源信号。 在第一操作模式中，提供包络电力转换器控制信号，使得包络电源信号使放大器的增益在提供给放大器的输入功率的范围内保持基本恒定。 在第二操作模式中，提供包络功率转换器控制信号，使得对于在低于预定阈值的输入功率范围内的值，包络电源信号保持基本上恒定，并且使得包络电源信号导致 放大器对于其他值保持基本恒定。
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公开(公告)号：US20160056151A1
公开(公告)日：2016-02-25
申请号：US14831428
申请日：2015-08-20
Applicant: RF Micro Devices, Inc.
Inventor： David Charles Sheridan , Xing Huang
IPC: H01L27/06 , H01L29/78 , H01L29/778 , H01L29/20 , H01L29/16
CPC classification number: H01L29/78 , H01L21/8236 , H01L27/0883 , H01L29/16 , H03K17/0822
Abstract: A power semiconductor device has an upper transistor and a lower transistor that is coupled in cascode with the upper transistor. The upper transistor comprises an upper drain, upper gate, and an upper source. The lower transistor comprises a lower drain that is coupled to the upper source, a lower gate, and a lower source that is coupled to the upper gate. The upper transistor is a depletion mode device and has a first saturation current. The lower transistor is an enhancement mode device and has a second saturation current, which is lower than the first saturation current.
Abstract translation: 功率半导体器件具有与上部晶体管共栅共享的上部晶体管和下部晶体管。 上部晶体管包括上部漏极，上部栅极和上部源极。 下部晶体管包括耦合到上部源极的下部漏极，下部栅极和耦合到上部栅极的下部源极。 上部晶体管是耗尽型器件，具有第一饱和电流。 下部晶体管是增强型器件，并且具有低于第一饱和电流的第二饱和电流。
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215.发明申请公开(公告)号：US20160028305A1
公开(公告)日：2016-01-28
申请号：US14808119
申请日：2015-07-24
Applicant: RF Micro Devices, Inc.
Inventor： Michael R. Kay , Manbir Singh Nag
IPC: H02M3/04
CPC classification number: H02M3/1582 , H02M3/07 , H02M3/1584 , H02M2001/0003 , H02M2001/0045 , H02M2001/4291 , H02M2003/1586 , H03F3/38
Abstract: A buck-boost DC-DC converter, which includes converter control circuitry, converter switching circuitry, and a first inductive element, is disclosed. The converter control circuitry provides a buck mode timing signal and a boost mode timing signal. The converter switching circuitry provides a switching output signal. During a buck mode of the buck-boost DC-DC converter, when a buck pulse-width of the switching output signal is less than a buck pulse-width threshold, the buck pulse-width is limited based on both the buck mode timing signal and the boost mode timing signal. During a boost mode of the buck-boost DC-DC converter, when a boost pulse-width of the switching output signal is less than a boost pulse-width threshold, the boost pulse-width is limited based on both the buck mode timing signal and the boost mode timing signal. The first inductive element receives and filters the switching output signal to provide a converter output signal.
Abstract translation: 公开了包括转换器控制电路，转换器开关电路和第一电感元件的降压 - 升压DC-DC转换器。 转换器控制电路提供降压模式定时信号和升压模式定时信号。 转换器切换电路提供开关输出信号。 在降压 - 升压DC-DC转换器的降压模式期间，当开关输出信号的降压脉冲宽度小于降压脉冲宽度阈值时，降压脉冲宽度基于降压模式定时信号 和升压模式定时信号。 在降压 - 升压DC-DC转换器的升压模式期间，当开关输出信号的升压脉冲宽度小于升压脉冲宽度阈值时，升压脉冲宽度基于两个降压模式定时信号 和升压模式定时信号。 第一电感元件接收和滤波开关输出信号以提供转换器输出信号。
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Patent Agency Ranking
公开(公告)号：US20160020636A1
公开(公告)日：2016-01-21
申请号：US14792891
申请日：2015-07-07
Applicant: RF Micro Devices, Inc.
Inventor： Nadim Khlat
Abstract: Aspects disclosed in the detailed description include a wireless charging circuit comprising a radio frequency (RF) power harvesting circuit. In one aspect, the RF power harvesting circuit is configured to harvest a wireless RF charging signal provided by a wireless charging station to generate a direct-current (DC) charging signal to charge a battery, for example, a lithium-ion (Li-ion) battery, in a battery-operated electronic device. In another aspect, a wireless charging controller controls the RF power harvesting circuit to dynamically increase or decrease an effective charging power of the DC charging signal according to a target charging power determined according to a charging profile of the battery. By dynamically adjusting the effective charging power provided to the battery according to the charging profile of the battery, it is possible to provide fast charging to the battery while protecting the battery from overcharging damage.
Abstract translation: 在详细描述中公开的方面包括包括射频（RF）功率采集电路的无线充电电路。 在一个方面，RF功率收集电路被配置为收获由无线充电站提供的无线RF充电信号，以产生直流（DC）充电信号，以对电池充电，例如锂离子（Li- 离子）电池，在电池供电的电子设备中。 在另一方面，无线充电控制器控制RF功率采集电路，以根据根据电池的充电曲线确定的目标充电功率来动态地增加或减少直流充电信号的有效充电功率。 通过根据电池的充电曲线动态地调整提供给电池的有效充电电力，可以对电池提供快速充电，同时保护电池免受过度充电损坏。
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公开(公告)号：US09240776B2
公开(公告)日：2016-01-19
申请号：US13751480
申请日：2013-01-28
Applicant: RF Micro Devices, Inc.
Inventor： David Zimlich , Joseph Hubert Colles , Ricke W. Clark , Chris Levesque
CPC classification number: H03K7/08 , H03C2200/0045 , H03K3/017
Abstract: Analog-to-digital pulse width modulation circuitry includes thermometer code generator circuitry, clock generator circuitry, delay selection circuitry, and an output stage. The thermometer code generator circuitry is adapted to generate a digital thermometer code based upon a received analog input voltage. The clock generator circuitry is adapted to generate a reference clock and a plurality of delayed clock signals. The delay selection circuitry is connected between the thermometer code generator circuitry and the clock generator circuitry, and is adapted to select one of the delayed clock signals to present to the output stage based upon the generated thermometer code. The selected delayed clock signal is delayed by an amount of time that is proportional to the generated thermometer code. The reference clock signal and the selected delayed clock signal are delivered to the output stage where they are used to generate a pulse width modulated output signal.
Abstract translation: 模数 - 数字脉宽调制电路包括温度计代码发生器电路，时钟发生器电路，延迟选择电路和输出级。 温度计代码发生器电路适于基于接收的模拟输入电压产生数字温度计代码。 时钟发生器电路适于产生参考时钟和多个延迟的时钟信号。 延迟选择电路连接在温度计代码发生器电路和时钟发生器电路之间，并且适于根据生成的温度计代码来选择一个延迟的时钟信号以呈现给输出级。 所选择的延迟时钟信号被延迟与生成的温度计代码成比例的时间量。 参考时钟信号和所选择的延迟时钟信号被传送到输出级，在它们被用于产生脉冲宽度调制的输出信号。
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公开(公告)号：US09196945B2
公开(公告)日：2015-11-24
申请号：US13904520
申请日：2013-05-29
Applicant: RF Micro Devices, Inc.
Inventor： Nadim Khlat , Marcus Granger-Jones , Ruediger Bauder
CPC classification number: H01P5/12 , H04B1/0057
Abstract: The disclosure describes a dual hybrid duplexer including two hybrid couplers, two intra-filters, a tunable isolation load, and a phase shifter. The phase shifter may be located at the isolation port. The phase shifter may be located at the antenna port. In one embodiment, a dual hybrid duplexer includes two hybrid couplers, two intra-filters, a tunable isolation load, a first phase shifter located at the isolation port, and a second phase shifter located at the antenna port. The first and second phase shifters have a difference of 90 degrees (plus or minus 10 degrees).
Abstract translation: 本公开描述了一种双混合双工器，其包括两个混合耦合器，两个内部滤波器，可调谐隔离负载和移相器。 移相器可以位于隔离端口处。 移相器可以位于天线端口处。 在一个实施例中，双混合双工器包括两个混合耦合器，两个内部滤波器，可调谐隔离负载，位于隔离端口的第一移相器和位于天线端口处的第二移相器。 第一和第二移相器具有90度（正负10度）的差。
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公开(公告)号：US20150296631A1
公开(公告)日：2015-10-15
申请号：US14750384
申请日：2015-06-25
Applicant: RF Micro Devices, Inc.
Inventor： Thomas Scott Morris , Ulrik Riis Madsen , Donald Joseph Leahy
CPC classification number: H05K3/4038 , H01L21/561 , H01L23/49827 , H01L23/552 , H01L24/97 , H01L2924/1461 , H05K1/115 , H05K3/301 , H05K9/0024 , H05K2201/0715 , Y10T29/49165 , H01L2924/00
Abstract: In one embodiment, a meta-module having circuitry for two or more modules is formed on a substrate, which is preferably a laminated substrate. The circuitry for the different modules is initially formed on the single meta-module. Each module will have one or more component areas in which the circuitry is formed. A metallic structure is formed on or in the substrate for each component area to be shielded. A single body, such as an overmold body, is then formed over all of the modules on the meta-module. At least a conductive vertical interconnect access structure (vias) associated with each component area to be shielded is then exposed through the body by a cutting, drilling, or similar operation. Next, an electromagnetic shield material is applied to the exterior surface of the body of each of the component areas to be shielded and in contact with the exposed conductive vias.
Abstract translation: 在一个实施例中，具有用于两个或更多个模块的电路的元模块形成在衬底上，衬底优选为层压衬底。 最初在单个元模块上形成不同模块的电路。 每个模块将具有其中形成电路的一个或多个组件区域。 对于要屏蔽的每个部件区域，在基板上或基板上形成金属结构。 然后在元模块上的所有模块上形成单体，例如包覆模体。 至少与要被屏蔽的每个组件区域相关联的导电垂直互连访问结构（通孔）然后通过切割，钻孔或类似操作通过身体暴露。 接下来，将电磁屏蔽材料施加到待屏蔽的每个部件区域的主体的外表面并与暴露的导电通孔接触。
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公开(公告)号：US09147632B2
公开(公告)日：2015-09-29
申请号：US13974488
申请日：2013-08-23
Applicant: RF Micro Devices, Inc.
Inventor： Andrew P. Ritenour
IPC: H01L23/34 , H01L29/66 , H01L29/20 , H01L29/778 , H01L23/367 , H01L23/482 , H01L29/06
CPC classification number: H01L29/66462 , H01L21/02378 , H01L21/0254 , H01L21/283 , H01L21/76898 , H01L23/34 , H01L23/3677 , H01L23/4824 , H01L29/0657 , H01L29/0696 , H01L29/2003 , H01L29/66431 , H01L29/7786 , H01L2924/0002 , H01L2924/00
Abstract: A semiconductor device having improved heat dissipation is disclosed. The semiconductor device includes a semi-insulating substrate and epitaxial layers disposed on the semi-insulating substrate wherein the epitaxial layers include a plurality of heat conductive vias that are disposed through the epitaxial layers with the plurality of heat conductive vias being spaced along a plurality of finger axes that are aligned generally parallel across a surface of the epitaxial layers. The semiconductor device further includes an electrode having a plurality of electrically conductive fingers that are disposed along the plurality of finger axes such that the electrically conductive fingers are in contact with the first plurality of heat conductive vias.
Abstract translation: 公开了一种具有改善的散热的半导体器件。 半导体器件包括半绝缘衬底和设置在半绝缘衬底上的外延层，其中外延层包括多个导热通孔，其布置成穿过外延层，多个导热通孔沿着多个 大致平行于外延层的表面对准的手指轴。 半导体器件还包括具有多个导电指状物的电极，沿着多个指状轴设置，使得导电指状物与第一多个导热通孔接触。
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