-
公开(公告)号：US20110304373A1
公开(公告)日：2011-12-15
申请号：US13100819
申请日：2011-05-04
IPC分类号： H03K3/01
CPC分类号： H03K5/01 , G11B20/10009 , H03K5/00
摘要： Within hard disk drives (HDDs), for example, a preamplifier or preamp is generally used to perform read and write operations with a magnetic head. Typically, for write operations, the preamplifier generates a current waveform that uses a DC current to polarize magnetic elements within the disk and overshoot components to compensate for frequency dependent attenuation in the interconnect between the head and preamp. Conventional pulse-shaping circuitry used for this application uses high voltage to accomplish this task. Here, however, pulse-shaping circuitry is provided which can generate a similar waveform using lower voltage (i.e., about 5V) for this application and others.
摘要翻译： 在硬盘驱动器（HDD）中，例如，前置放大器或前置放大器通常用于使用磁头执行读取和写入操作。 通常，对于写入操作，前置放大器产生电流波形，其使用DC电流来极化磁盘内的磁性元件并过冲组件以补偿头部和前置放大器之间的互连中的频率相关衰减。 用于此应用的常规脉冲整形电路使用高电压来完成此任务。 然而，这里提供了脉冲整形电路，其可以为该应用等使用较低的电压（即约5V）产生类似的波形。
-
公开(公告)号：US08421510B2
公开(公告)日：2013-04-16
申请号：US13100819
申请日：2011-05-04
CPC分类号： H03K5/01 , G11B20/10009 , H03K5/00
摘要： Within hard disk drives (HDDs), for example, a preamplifier or preamp is generally used to perform read and write operations with a magnetic head. Typically, for write operations, the preamplifier generates a current waveform that uses a DC current to polarize magnetic elements within the disk and overshoot components to compensate for frequency dependent attenuation in the interconnect between the head and preamp. Conventional pulse-shaping circuitry used for this application uses high voltage to accomplish this task. Here, however, pulse-shaping circuitry is provided which can generate a similar waveform using lower voltage (i.e., about 5V) for this application and others.
摘要翻译： 在硬盘驱动器（HDD）中，例如，前置放大器或前置放大器通常用于使用磁头执行读取和写入操作。 通常，对于写入操作，前置放大器产生电流波形，其使用DC电流来极化磁盘内的磁性元件并过冲组件以补偿头部和前置放大器之间的互连中的频率相关衰减。 用于此应用的常规脉冲整形电路使用高电压来完成此任务。 然而，这里提供了脉冲整形电路，其可以为该应用等使用较低的电压（即约5V）产生类似的波形。
-
公开(公告)号：US07961056B2
公开(公告)日：2011-06-14
申请号：US12557369
申请日：2009-09-10
申请人： Stewart S. Taylor , Diptendu Ghosh
发明人： Stewart S. Taylor , Diptendu Ghosh
IPC分类号： H03B5/00 , H03B5/08 , H03B5/12 , H03L3/00 , H03L5/00 , H03L5/02 , H03L7/24 , H04B1/06 , H04B1/10
CPC分类号： H03L7/099 , H03B5/1212 , H03B5/1228 , H03L5/00
摘要： Embodiments of the present invention include a low phase noise oscillator circuit using a current-reuse technique to reduce power consumption and improve phase noise, where the oscillator circuit comprises a first VCO coupled to a second VCO, and the outputs of the first and second VCOs are coupled with passive elements, such as capacitors. The overall power consumption of both the first and second VCOs is about the same as a single VCO. Furthermore, the phase noise is lowered by around 3 dB. Thus, the phase noise performance is improved without increasing the power consumption of the oscillator circuit.
摘要翻译： 本发明的实施例包括使用电流复用技术来降低功耗并改善相位噪声的低相位噪声振荡器电路，其中振荡器电路包括耦合到第二VCO的第一VCO，以及第一和第二VCO的输出 与诸如电容器的无源元件耦合。 第一和第二VCO的总功耗与单个VCO大致相同。 此外，相位噪声降低约3dB。 因此，在不增加振荡器电路的功耗的情况下，提高了相位噪声性能。
-
公开(公告)号：US20110057732A1
公开(公告)日：2011-03-10
申请号：US12557369
申请日：2009-09-10
申请人： Stewart S. Taylor , Diptendu Ghosh
发明人： Stewart S. Taylor , Diptendu Ghosh
CPC分类号： H03L7/099 , H03B5/1212 , H03B5/1228 , H03L5/00
摘要： Embodiments of the present invention include a low phase noise oscillator circuit using a current-reuse technique to reduce power consumption and improve phase noise, where the oscillator circuit comprises a first VCO coupled to a second VCO, and the outputs of the first and second VCOs are coupled with passive elements, such as capacitors. The overall power consumption of both the first and second VCOs is about the same as a single VCO. Furthermore, the phase noise is lowered by around 3 dB. Thus, the phase noise performance is improved without increasing the power consumption of the oscillator circuit
摘要翻译： 本发明的实施例包括使用电流复用技术来降低功耗并改善相位噪声的低相位噪声振荡器电路，其中振荡器电路包括耦合到第二VCO的第一VCO，以及第一和第二VCO的输出 与诸如电容器的无源元件耦合。 第一和第二VCO的总功耗与单个VCO大致相同。 此外，相位噪声降低约3dB。 因此，在不增加振荡器电路的功耗的情况下，提高了相位噪声性能
-
-
-
搜索结果
4 条记录 (耗时 0.202 秒)
