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    • 1. 发明申请
    • COMPOSITE SOURCE FOLLOWER
    • 复合源产品
    • US20050088205A1
    • 2005-04-28
    • US10694246
    • 2003-10-27
    • Sateh JalaleddineSuharli Tedja
    • Sateh JalaleddineSuharli Tedja
    • H03F3/50H03K3/00H03K5/02H03K5/153H03K5/24
    • H03F3/505H03F2203/5031H03K5/023H03K5/2481
    • A folded cascode device senses the drain current of a source follower, and a current mirror device multiplies the sensed drain current for application to an output load. The source follower and the current mirror device are preferably of the same type (e.g., both NMOS). The resulting composite source follower provides relatively wide bandwidth at relatively low power. The folded cascode allows (NMOS) source and sink control. Using current mirror feedback reduces the stability problems associated with other solutions that rely on a voltage feedback stage. Composite source followers of the present invention can be used in any traditional buffer applications, such as in operational amplifiers, regulators, or high-speed signal paths.
    • 折叠共源共栅器件感测源极跟随器的漏极电流,并且电流镜装置将感测到的漏极电流乘以输出负载。 源极跟随器和电流镜装置优选地具有相同类型(例如,两个NMOS)。 所得到的复合源跟随器在相对低的功率下提供相对宽的带宽。 折叠的共源共栅允许(NMOS)源极和漏极控制。 使用电流镜反馈减少了与依赖于电压反馈级的其他解决方案相关的稳定性问题。 本发明的复合源跟随器可以用于任何传统的缓冲器应用中,例如在运算放大器,调节器或高速信号路径中。
    • 3. 发明授权
    • Image rejection for low IF receivers
    • 低IF接收机的图像抑制
    • US08847676B2
    • 2014-09-30
    • US13533501
    • 2012-06-26
    • Sateh Jalaleddine
    • Sateh Jalaleddine
    • H03B1/00
    • H03H11/0444H03D7/165H03D2200/0088H03H11/0472H03H2011/0494H03H2210/023H04B1/30
    • A system that includes a polyphase filter comprises first and second gm-C filters with first and second variable biasing and a bias controller coupled to the first and second gm-C filters and configured to offset the first variable biasing and corresponding first gm of the first gm-C filter relative to the second variable biasing and corresponding second gm of the second gm-C filter to thus improve image rejection in the system. A corresponding method includes processing a signal in a complex polyphase filter and controlling biasing of the first gm-C filter stage relative to the second gm-C filter stage to provide a mismatched gm and thereby improve rejection of the image signal.
    • 包括多相滤波器的系统包括具有第一和第二可变偏压的第一和第二gm-C滤波器,以及耦合到第一和第二gm-C滤波器的偏置控制器,并且被配置为偏移第一和第二可变偏置的第一可变偏压和相应的第一gm gm-C滤波器相对于第二变量偏置和相应的第二gm-C滤波器的第二gm,从而提高系统中的图像抑制。 相应的方法包括处理复杂多相滤波器中的信号并且控制第一gm-C滤波器级相对于第二gm-C滤波器级的偏置以提供不匹配的gm,从而改善图像信号的抑制。
    • 4. 发明申请
    • IMAGE REJECTION FOR LOW IF RECEIVERS
    • 低中频接收机的图像抑制
    • US20130342267A1
    • 2013-12-26
    • US13533501
    • 2012-06-26
    • Sateh Jalaleddine
    • Sateh Jalaleddine
    • H03K5/00
    • H03H11/0444H03D7/165H03D2200/0088H03H11/0472H03H2011/0494H03H2210/023H04B1/30
    • A system that includes a polyphase filter comprises first and second gm-C filters with first and second variable biasing and a bias controller coupled to the first and second gm-C filters and configured to offset the first variable biasing and corresponding first gm of the first gm-C filter relative to the second variable biasing and corresponding second gm of the second gm-C filter to thus improve image rejection in the system. A corresponding method includes processing a signal in a complex polyphase filter and controlling biasing of the first gm-C filter stage relative to the second gm-C filter stage to provide a mismatched gm and thereby improve rejection of the image signal.
    • 包括多相滤波器的系统包括具有第一和第二可变偏压的第一和第二gm-C滤波器,以及耦合到第一和第二gm-C滤波器的偏置控制器,并且被配置为偏移第一和第二可变偏置的第一可变偏压和相应的第一gm gm-C滤波器相对于第二变量偏置和相应的第二gm-C滤波器的第二gm,从而提高系统中的图像抑制。 相应的方法包括处理复杂多相滤波器中的信号并且控制第一gm-C滤波器级相对于第二gm-C滤波器级的偏置以提供不匹配的gm,从而改善图像信号的抑制。
    • 6. 发明申请
    • CLASS AB ENHANCED TRANSCONDUCTANCE SOURCE FOLLOWER
    • CLASS AB增强型交流电源
    • US20070109052A1
    • 2007-05-17
    • US11612354
    • 2006-12-18
    • Stephen FranckSateh Jalaleddine
    • Stephen FranckSateh Jalaleddine
    • H03F3/26
    • H03F3/505H03F1/0205H03F1/523H03F2200/462H03F2203/5012
    • A low voltage, high bandwidth, enhanced transconductance, source follower circuit constructed from MOS FET devices, which operates in a class AB mode. The drain current of the source follower is sensed with a folded cascode device. The sensed current is multiplied by a common source device of same type (NMOS or PMOS) as the source follower, and directed to the output load. Over limit current load at the source follower drain is sensed by a common source device of the opposite type (NMOS or PMOS), which also supplies the necessary extra current to the output load. This allows. the device to supply significantly more than the quiescent current in both sourcing and sinking the output. Average power consumption for driving a given load is significantly reduced, while maintaining the large bandwidth of traditional source follower designs, and the capability for use in either voltage regulators or in a current conveyor.
    • 一种低压,高带宽,增强的跨导,源极跟随器电路,由MOS FET器件构成,其工作在AB类模式。 源极跟随器的漏极电流用折叠共源共栅器件进行感测。 感测到的电流乘以与源极跟随器相同类型(NMOS或PMOS)的公共源器件,并且被引导到输出负载。 源极跟随器漏极处的超限电流负载由相反类型(NMOS或PMOS)的公共源器件感测,其也向输出负载提供必要的额外电流。 这允许。 该器件在输出和输出中都提供明显多于静态电流。 驱动给定负载的平均功耗大大降低,同时保持传统源极跟随器设计的大带宽,以及在电压调节器或当前输送机中使用的能力。
    • 7. 发明申请
    • Class AB enhanced transconductance source follower
    • AB类增强型跨导源跟随器
    • US20050134383A1
    • 2005-06-23
    • US10737937
    • 2003-12-17
    • Stephen FranckSateh Jalaleddine
    • Stephen FranckSateh Jalaleddine
    • H03F3/18
    • H03F3/505H03F1/0205H03F1/523H03F2200/462H03F2203/5012
    • A low voltage, high bandwidth, enhanced transconductance, source follower circuit constructed from MOS FET devices, which operates in a class AB mode. The drain current of the source follower is sensed with a folded cascode device. The sensed current is multiplied by a common source device of same type (NMOS or PMOS) as the source follower, and directed to the output load. Over limit current load at the source follower drain is sensed by a common source device of the opposite type (NMOS or PMOS), which also supplies the necessary extra current to the output load. This allows the device to supply significantly more than the quiescent current in both sourcing and sinking the output. Average power consumption for driving a given load is significantly reduced, while maintaining the large bandwidth of traditional source follower designs, and the capability for use in either voltage regulators or in a current conveyor.
    • 一种低压,高带宽,增强的跨导,源极跟随器电路,由MOS FET器件构成,其工作在AB类模式。 源极跟随器的漏极电流用折叠共源共栅器件进行感测。 感测到的电流乘以与源极跟随器相同类型(NMOS或PMOS)的公共源器件,并且被引导到输出负载。 源极跟随器漏极处的超限电流负载由相反类型(NMOS或PMOS)的公共源器件感测,其也向输出负载提供必要的额外电流。 这允许器件在输出中输出和吸收时提供明显高于静态电流。 驱动给定负载的平均功耗大大降低,同时保持传统源极跟随器设计的大带宽,以及在电压调节器或当前输送机中使用的能力。