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    • 5. 发明申请
    • GAIN AND PHASE CALIBRATION FOR CLOSED LOOP FEEDBACK LINEARIZED AMPLIFIERS
    • 闭环反馈线性放大器的增益和相位校准
    • US20140266457A1
    • 2014-09-18
    • US14215815
    • 2014-03-17
    • RF Micro Devices (Cayman Islands), Ltd.
    • Baker ScottGeorge MaximDirk Robert Walter Leipold
    • H03F3/195H03F1/32
    • H03F1/3241H01F27/28H01F27/385H03F1/22H03F1/32H03F1/34H03F3/19H03F3/195H03F3/211H03F3/213H03H7/09H03H7/1775
    • Embodiments of a radio frequency (RF) amplification device having an RF amplification circuit and an amplifier control circuit operably associated with the RF amplification circuit are disclosed. The RF amplification circuit is configured to amplify an RF signal in accordance with a transfer function. The amplifier control circuit includes a closed-loop linearization circuit and a calibration circuit. The closed-loop linearization circuit is configured to be activated so that the transfer function defines a closed-loop response and inactive so that the transfer function defines an open-loop response. For example, the closed-loop linearization circuit may become inactive at small-signal power levels. Accordingly, the amplifier control circuit also includes a calibration circuit configured to reduce a difference between the open-loop response and the closed-loop response of the transfer function. In this manner, the performance of the RF amplification device is maintained while the closed-loop linearization circuit is inactive.
    • 公开了具有RF放大电路和可操作地与RF放大电路相关联的放大器控制电路的射频(RF)放大装置的实施例。 RF放大电路被配置为根据传递函数放大RF信号。 放大器控制电路包括闭环线性化电路和校准电路。 闭环线性化电路被配置为被激活,使得传递函数定义闭环响应并且不起作用,使得传递函数定义开环响应。 例如,闭环线性化电路可能在小信号功率电平下变得无效。 因此,放大器控制电路还包括被配置为减小开环响应和传递函数的闭环响应之间的差异的校准电路。 以这种方式,当闭环线性化电路无效时,维持RF放大装置的性能。
    • 7. 发明申请
    • DC Inductor
    • 直流电感
    • US20080303620A1
    • 2008-12-11
    • US12155632
    • 2008-06-06
    • Tero ViitanenPaulius PieterisEsa Hautakorpi
    • Tero ViitanenPaulius PieterisEsa Hautakorpi
    • H01F27/24
    • H01F3/14H01F27/385H01F37/00H01F2003/103
    • A DC inductor comprising a core structure (11) comprising one or more magnetic gaps (12, 13), a coil (14) wound on the core structure (11), at least one permanent magnet (15) positioned in the core structure, the magnetization of the permanent magnet (15) opposing the magnetization producible by the coil (14). The DC inductor further comprises at least one magnetic slab (16) inserted to the core structure which forms the one or more magnetic gaps (12, 13), at least one supporting member (17) made of magnetic material extending from the core structure inside the core structure and supporting the at least one permanent magnet (15), and that the at least one supporting member (17) is arranged to form a magnetic path for the at least one permanent magnet.
    • 一种直流电感器,包括一个包括一个或多个磁隙(12,13)的芯结构(11),缠绕在芯结构(11)上的线圈(14)),至少一个定位在芯结构中的永磁体(15) 永磁体(15)的磁化与由线圈(14)可产生的磁化相反。 直流电感器还包括插入到芯结构中的至少一个磁性板(16),其形成一个或多个磁隙(12,13),至少一个支撑构件(17)由从芯结构内部延伸的磁性材料制成 所述芯结构并且支撑所述至少一个永磁体(15),并且所述至少一个支撑构件(17)被布置成形成用于所述至少一个永磁体的磁路。
    • 9. 发明申请
    • Simplified harmonic-free constant-voltage transformer
    • 简单无谐波恒压变压器
    • US20050258927A1
    • 2005-11-24
    • US10197999
    • 2002-07-17
    • Weimin Lu
    • Weimin Lu
    • H01F3/12H01F3/14H01F27/24H01F27/245H01F27/38
    • H01F27/385H01F3/12H01F3/14H01F27/245
    • A ferroresonant transformer to produce an output voltage that has a substantially constant output voltage that is substantially free of harmonics includes a ferromagnetic core with a winding part and primary and secondary windings on that part. The core also includes a flux return part. Magnetic shunts magnetically couple some of the flux from the core between the primary and secondary windings to the flux return part. The core includes a region with a reduced cross-sectional area that constitutes an air gap to form a built-in inductor. The remainder of the core works with the secondary winding and a resonating capacitor to generate a substantially harmonic-free, constant-voltage output. The transformer may have one set of primary-secondary windings if it is to operate on single-phase alternating current, or it may have multiple sets if it is to operate on multi-phase alternating current.
    • 用于产生具有基本上没有谐波的基本上恒定的输出电压的输出电压的铁磁谐振变压器包括具有绕组部分的铁磁芯和该部分上的初级和次级绕组。 磁芯还包括磁通返回部分。 磁分流器将来自主绕组和次级绕组之间的芯的一些磁通量磁耦合到磁通返回部件。 芯包括具有减小的横截面面积的区域,其构成气隙以形成内置电感器。 核心的其余部分与次级绕组和谐振电容器一起工作,以产生基本上无谐波的恒定电压输出。 如果要在单相交流电中工作,变压器可能具有一组初级次级绕组,或者如果要在多相交流电中工作,它可能具有多组。
    • 10. 发明申请
    • Inductor arrangement
    • 电感器布置
    • US20050068144A1
    • 2005-03-31
    • US10934737
    • 2004-09-07
    • Erkki Miettinen
    • Erkki Miettinen
    • H01F27/38H01F37/00H02M3/335
    • H01F27/385H01F37/00
    • An inductor arrangement for a frequency converter or corresponding electrical apparatus, the inductor arrangement comprising an input inductor coupled to the input side of the electrical apparatus and an output inductor coupled to the output side of the apparatus, the input inductor comprising a core element having yokes and columns, and several winding turns for each phase formed around the core element. The output inductor is provided in the inductor arrangement by placing a predetermined length of a conductor of each phase in the output of said electrical apparatus adjacent to the core element of the input inductor.
    • 一种用于变频器或相应电气设备的电感器装置,电感器装置包括耦合到电气设备的输入侧的输入电感器和耦合到装置的输出侧的输出电感器,输入电感器包括具有轭的芯元件 和列,并且围绕芯元件形成的每个相的几个绕组匝数。 输出电感器通过将每相的导体的预定长度放置在与输入电感器的芯体元件相邻的所述电气设备的输出中而设置在电感器装置中。