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41. 发明申请

US20110043283A1 VARIABLE FREQUENCY CLASS-D AMPLIFIER, CONTROL METHOD THEREOF, AND RAMP GENERATOR THEREFOR 失效
标题翻译：可变频率分类放大器及其控制方法及其RAMP发生器
公开(公告)号：US20110043283A1
公开(公告)日：2011-02-24
申请号：US12857855
申请日：2010-08-17
申请人： PEI-CHUNG HUANG , JWIN-YEN GUO , SHAO-MING SUN
发明人： PEI-CHUNG HUANG , JWIN-YEN GUO , SHAO-MING SUN
IPC分类号： H03F1/00 , H03F3/217
CPC分类号： H03F3/217
摘要： A class-D amplifier includes a ramp generator to provide a ramp signal having a frequency varying with an audio input signal, and a modulator to convert the audio input signal to a pulse width modulation signal according to the ramp signal for a driver to drive a load device. The varying frequency of the ramp signal will cause the frequency of the pulse width modulation signal unfixed and consequently improves EMI issue.
摘要翻译： D类放大器包括：斜坡发生器，用于提供具有随音频输入信号变化的频率的斜坡信号;以及调制器，用于根据用于驾驶员的驱动器的斜坡信号将音频输入信号转换为脉宽调制信号负载设备斜坡信号的变化频率将导致脉宽调制信号的频率不固定，从而改善EMI问题。

42. 发明申请

US20110032036A1 PERFORMANCE TUNING USING ENCODED PERFORMANCE PARAMETER INFORMATION 审中-公开
标题翻译：使用编码性能参数信息进行性能调谐
公开(公告)号：US20110032036A1
公开(公告)日：2011-02-10
申请号：US12908661
申请日：2010-10-20
申请人： Giorgio Pedrazzini , Sandro Cerato , Alberto Salina
发明人： Giorgio Pedrazzini , Sandro Cerato , Alberto Salina
IPC分类号： H03G3/00 , G06F12/00 , G01R31/28 , H03F1/00
CPC分类号： H02P6/34 , Y10T29/49004
摘要： A multi-chip system in which at least one of the chips includes a performance parameter encoded thereon. After system assembly, the performance parameter can be obtained by a companion chip and used to automatically or semi-automatically fine tune the companion chip to the specific parameters of the at least one chip.
摘要翻译：一种多芯片系统，其中至少一个芯片包括在其上编码的性能参数。在系统组装之后，可以通过伴随芯片获得性能参数，并用于将伴随芯片自动或半自动微调至至少一个芯片的特定参数。

43. 发明申请

US20110001541A1 POWER AMPLIFICATION DEVICE AND COMMUNICATION DEVICE 有权
公开(公告)号：US20110001541A1
公开(公告)日：2011-01-06
申请号：US12865720
申请日：2008-12-25
申请人： Akira Nagayama
发明人： Akira Nagayama
IPC分类号： G06G7/14 , H03F1/00
CPC分类号： H03F3/24 , H03F1/0294 , H03F3/19 , H03F2200/102 , H03F2200/451
摘要： In a case where two constant envelope signals corresponding to an input signal are generated through analog signal processing, variation in detection sensitivities of amplitudes of those signals is suppressed. At least one of a mixer (24) for detecting an amplitude of a first intermediate signal S1 and a mixer (26) for detecting an amplitude of a second intermediate signal S2 detects an amplitude of a given reference signal, and sampling hold circuits (36, 38) hold a voltage related to those amplitudes. Then, detection sensitivities of the mixer (24, 26) are corrected based on the held voltage.

44. 发明申请

US20110001497A1 FLOATING FRONT-END AMPLIFIER AND ONE-WIRE MEASURING DEVICES 有权
标题翻译：浮动前端放大器和单线测量装置
公开(公告)号：US20110001497A1
公开(公告)日：2011-01-06
申请号：US12919018
申请日：2009-03-10
申请人： Olivier CHETELAT , Josep SOLA I CAROS
发明人： Olivier CHETELAT , Josep SOLA I CAROS
IPC分类号： G01R27/08 , H03F1/00
CPC分类号： A61B5/0428 , A61B5/04004 , H03F3/45475
摘要： A follower amplifier with power supply biased by a controlled voltage source such that the power supply potentials are, for the frequencies of interest, as close as possible to the potential of the follower output. There is proposed a front-end electronic circuit for biopotential and impedance measurements with outstanding performances (very high input impedance and gain very close to unity). Preferably, the explicit guard electrode and the explicit electronic unit at the belt are no longer necessary; all electronics is embedded in units placed directly at the measurement sites. Moreover, the proposed front-end electronic circuit allows a drastic simplification of the cabling and connectors since all units are connected to only one wire (the theoretical minimum) for potential reference and current return. Preferably, this wire does not even require an electrical isolation and can be easily embedded in the textile of a shirt, in a garment, mesh, belt, etc.
摘要翻译：具有由受控电压源偏置的电源的跟随放大器，使得针对感兴趣的频率的电源电位尽可能接近跟随器输出的电位。提出了一种用于生物电位和阻抗测量的前端电子电路，具有出色的性能（非常高的输入阻抗和增益非常接近于一体）。优选地，不再需要在带上的显性保护电极和显式电子单元; 所有电子产品都嵌入直接放置在测量点的单元。此外，所提出的前端电子电路允许电缆和连接器的大大简化，因为所有单元仅连接到一个导线（理论最小值），用于潜在的参考和电流返回。优选地，该线材甚至不需要电隔离并且可以容易地嵌入到衣服，网状物，带等中的衬衫的纺织品中。

45. 发明申请

US20100327971A1 Transmission device, distortion compensation device, and distortion compensation method 有权
标题翻译：传动装置，失真补偿装置和失真补偿方法
公开(公告)号：US20100327971A1
公开(公告)日：2010-12-30
申请号：US12801694
申请日：2010-06-21
申请人： Kazuhiko Kumagai
发明人： Kazuhiko Kumagai
IPC分类号： H03F1/26 , H03F1/00
CPC分类号： H03F1/0222 , H03F1/3241
摘要： A transmission device includes an amplifier that amplifies a transmission signal according to a voltage to be applied, an envelope detector that detects an envelope signal of the transmission signal, a rate decreasing unit that decreases changing rate of the envelope signal detected by the envelope detector, and a voltage controller that changes the voltage applied to the amplifier according to the envelope signal whose changing rate is decreased by the rate decreasing unit.
摘要翻译：发送装置包括：放大器，根据要施加的电压放大发送信号;检测发送信号的包络信号的包络检测器;降低包络检测器检测出的包络信号的变化率的速率降低单元，以及电压控制器，其根据其变化率通过速率降低单元降低的包络信号改变施加到放大器的电压。

46. 发明授权

US07848403B1 Enhanced reconditioning equalizer filter chain for multi-carrier signals 有权
标题翻译：用于多载波信号的增强型修复均衡器滤波器链
公开(公告)号：US07848403B1
公开(公告)日：2010-12-07
申请号：US11603678
申请日：2006-11-24
申请人： Kiomars Anvari
发明人： Kiomars Anvari
IPC分类号： H03H7/30 , H04L27/08 , H03F3/66 , H03F1/00 , H04B1/04
CPC分类号： H04L27/2614 , H04L25/03343
摘要： A technique for enhanced reconditioning equalizer filter chain for multi-carrier signals is described. The input to a transmitter chain is modified by an enhanced reconditioning equalizer filter chain, prior to being applied to the transmitter. The enhanced reconditioning equalizer filter chain modifies and smoothen the amplitude of the signal. The modified and smoothen signal has its picks reduced which results to lower Crest Factor. The input to the enhanced reconditioning equalizer filter chain could be a baseband, an intermediate frequency (IF) or radio frequency (RF) signal. When the signal is an IF or RF signal it needs to be down converted to baseband before applied to enhanced reconditioning equalizer filter chain. The enhanced reconditioning equalizer filter chain could be implemented in digital or analog domain.
摘要翻译：描述了一种用于多载波信号的增强修复均衡器滤波器链的技术。在施加到发射机之前，通过增强的修复均衡器滤波器链修改发射机链的输入。增强的修复均衡器滤波器链修改和平滑信号的幅度。修改和平滑信号的选择减少，导致较低的波峰因数。增强型再生均衡器滤波器链的输入可以是基带，中频（IF）或射频（RF）信号。当信号是IF或RF信号时，需要将其转换为基带，然后再应用于增强型修复均衡器滤波器链。增强型修复均衡器滤波器链可以在数字或模拟域中实现。

47. 发明申请

US20100237938A1 HIGH EFFICIENCY LINEAR POWER AMPLIFIERS WITH LOAD COMPENSATION 有权
标题翻译：具有负载补偿功能的高效线性功率放大器
公开(公告)号：US20100237938A1
公开(公告)日：2010-09-23
申请号：US12303697
申请日：2006-06-09
申请人： Thomas Lejon
发明人： Thomas Lejon
IPC分类号： H03F1/00
CPC分类号： H04B1/0458 , H03F1/0205 , H03F1/3205 , H03F1/3241 , H03F1/56 , H03F3/24 , H03F2200/108 , H03F2200/336 , H03F2200/375 , H03F2200/387 , H03F2200/451 , H03F2200/75 , H04B1/0475
摘要： The present invention addresses the problem to extend the dynamic power range where the amplifier operates linearly for a full input amplitude swing with improved efficiency. According to the present invention, the above presented problem is solved by changing the delivered power to the load by changing the value of the load and still keeping the amplifier in its linear condition. The invention enables the amplifier to maintain high efficiency over a wider power range.
摘要翻译：本发明解决了扩大动态功率范围的问题，其中放大器以提高的效率线性地进行全输入幅度摆动。根据本发明，通过改变负载值并将放大器保持在线性状态来改变对负载的输送功率，解决了上述问题。本发明使放大器能够在更宽的功率范围内保持高效率。

48. 发明申请

US20100227599A1 AMPLIFER SYSTEM FOR CELL SITES AND OTHER SUITABLE APPLICATIONS 有权
标题翻译：用于细胞场的放大器系统和其他适用的应用
公开(公告)号：US20100227599A1
公开(公告)日：2010-09-09
申请号：US12397491
申请日：2009-03-04
申请人： George P. Vella-Coleiro , Josef Ocenasek , Jeffrey G. Strahler , Christopher F. Zappala
发明人： George P. Vella-Coleiro , Josef Ocenasek , Jeffrey G. Strahler , Christopher F. Zappala
IPC分类号： H04M3/22 , H04M1/00 , H03F1/00
CPC分类号： H03F3/602 , H01P1/213 , H03F1/3223 , H03F3/19 , H03F3/245 , H03F2200/111 , H03F2200/192 , H03F2200/198 , H03F2200/204 , H03F2200/451 , H04B1/0064
摘要： In one embodiment, an amplifier system has a tap, a delay filter, a linearized amplifier, and a hybrid combiner. The tapped portion of an input signal is amplified by the amplifier, the untapped portion of the input signal is delayed by the delay filter, and the combiner combines the resulting amplified, tapped portion and the delayed, untapped portion to generate an amplified output signal. By re-combining the delayed, untapped portion of the input signal with the amplified, tapped portion, the power of the untapped portion is not lost, and the amplifier does not have to compensate for all of the distortion that would otherwise be associated with the total output power level. Such an amplifier system is applicable, for example, in upgrading an existing GSM cell site to support both GSM communications as well as UMTS communications without degrading GSM operations.
摘要翻译：在一个实施例中，放大器系统具有抽头，延迟滤波器，线性放大器和混合组合器。输入信号的抽头部分由放大器放大，输入信号的未开关部分被延迟滤波器延迟，并且组合器组合所产生的放大的抽头部分和延迟的未开关部分以产生放大的输出信号。通过将输入信号的延迟的未开发部分与放大的抽头部分重新组合，未分配部分的功率不会丢失，并且放大器不必补偿否则将与总输出功率水平。这样的放大器系统例如可用于升级现有GSM小区站点以支持GSM通信以及UMTS通信，而不会降低GSM操作。

49. 发明授权

US07760017B2 Integrated circuit having on die structure providing capacitance in amplifier feedback path 有权
标题翻译：具有在放大器反馈路径中提供电容的管芯结构的集成电路
公开(公告)号：US07760017B2
公开(公告)日：2010-07-20
申请号：US12107372
申请日：2008-04-22
申请人： Kimo Y. F. Tam , Stefano D'Aquino
发明人： Kimo Y. F. Tam , Stefano D'Aquino
IPC分类号： H03F1/00
CPC分类号： H03F1/14 , H03F1/34 , H03F3/45475 , H03F2203/45082 , H03F2203/45418
摘要： An amplifier structure includes shield conductors that are provided spatially adjacent to elongated feedback signal lines that couple a feedback circuit to an amplifier input. The shield conductors are provided between the feedback signal lines and a ground plane, which interrupts a parasitic capacitance that otherwise would be established between the feedback signal line and ground. The shield conductors are electrically coupled to the amplifier's outputs which create a capacitance between the output terminal and the feedback signal line. In some embodiments, the capacitance generated between the output terminal and the feedback signal line can suffice as a capacitor in a feedback path of the amplifier and be contained in an integrated circuit die on which the amplifier is manufactured. Optionally, a structure may be provided that eliminates common mode signals on the feedback lines while simultaneously preserving the common mode signals on the amplifier output terminals. In this option, a second amplifier is provided that, in response to common mode variations at the output terminal, generates counterbalancing voltage variations on a second circuit that is coupled to the feedback lines at their source. The two variations cancel each other out at nodes from which the feedback lines originate, which substantially reduces feedback common mode variation even when there is common mode variation at the output terminals.
摘要翻译：放大器结构包括屏蔽导体，空间上邻近于将反馈电路耦合到放大器输入的细长反馈信号线。屏蔽导体设置在反馈信号线和接地平面之间，其中断了反馈信号线和地之间否则将建立的寄生电容。屏蔽导体电耦合到放大器的输出，在输出端和反馈信号线之间产生电容。在一些实施例中，在输出端和反馈信号线之间产生的电容可以作为放大器的反馈路径中的电容器，并且被包含在其上制造放大器的集成电路管芯中。可选地，可以提供消除反馈线上的共模信号同时保持放大器输出端上的共模信号的结构。在该选项中，提供第二放大器，其响应于输出端子处的共模变化，在耦合到源极处的反馈线的第二电路上产生平衡电压变化。这两个变化在反馈线所在的节点彼此抵消，即使在输出端子处存在共模变化时，这也大大降低了反馈共模变化。

50. 发明申请

US20100148867A1 Audio Out Unit 有权
标题翻译：音频输出单元
公开(公告)号：US20100148867A1
公开(公告)日：2010-06-17
申请号：US12637102
申请日：2009-12-14
申请人： Hung-I Chen , Yen-Hsun Hsu , Sung-Han Wen , Wei-Cheng Tang
发明人： Hung-I Chen , Yen-Hsun Hsu , Sung-Han Wen , Wei-Cheng Tang
IPC分类号： H03F1/00
CPC分类号： H03F3/185 , H03F1/0211 , H03F3/45475 , H03F3/68 , H03F2200/03 , H03F2200/408
摘要： A DC-coupled audio out unit is provided, including at least one regulator and at least one audio amplifier. The regulator is coupled to at least one power terminal of the audio amplifier.
摘要翻译：提供了一个DC耦合音频输出单元，包括至少一个调节器和至少一个音频放大器。调节器耦合到音频放大器的至少一个电源端子。

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