公开(公告)号：US08334708B1

公开(公告)日：2012-12-18

申请号：US13194315

申请日：2011-07-29

申请人： Jeongwon Cha ,  Taejoong Song ,  Changhyuk Cho ,  Minsik Ahn ,  Chang-Ho Lee ,  Wangmyong Woo ,  Jae Joon Chang

发明人： Jeongwon Cha ,  Taejoong Song ,  Changhyuk Cho ,  Minsik Ahn ,  Chang-Ho Lee ,  Wangmyong Woo ,  Jae Joon Chang

IPC分类号： H03K19/00 ,  H03K19/02

CPC分类号： H03K19/0019

摘要： Example driver circuits can utilize shared-charge recycling charge pump structures. In particular, an example shared-charge recycling process may be applied to a clock buffer and charge transfer cells of the charge pump in a driver circuit. An example recycling process may include recycling of shared charges between the capacitors/capacitances in the charge transfer cells. An example recycling process may use the charges in one or more capacitors to charge one or more other capacitors before the charges are wasted or otherwise discharged to ground. Such recycling may significantly reduce the power consumption of the charge pump while still providing a high output voltage level, according to an example embodiment of the invention.

摘要翻译： 示例驱动电路可以利用共享电荷循环电荷泵结构。 特别地，示例性共享电荷回收过程可以应用于驱动器电路中的电荷泵的时钟缓冲器和电荷转移单元。 示例回收过程可以包括在电荷转移单元中的电容器/电容之间再循环共享电荷。 示例回收过程可以在一个或多个电容器中的电荷在电荷被浪费或以其它方式放电到地之前对一个或多个其它电容器充电。 根据本发明的示例性实施例，这种再循环可以显着降低电荷泵的功耗，同时仍然提供高输出电压电平。

公开(公告)号：US20130029614A1

公开(公告)日：2013-01-31

申请号：US13194325

申请日：2011-07-29

申请人： Changhyuk Cho ,  Jeongwon Cha ,  Minsik Ahn ,  Chang-Ho Lee ,  Wyangmyong Woo ,  Jae Joon Chang

发明人： Changhyuk Cho ,  Jeongwon Cha ,  Minsik Ahn ,  Chang-Ho Lee ,  Wyangmyong Woo ,  Jae Joon Chang

IPC分类号： H04B1/44

CPC分类号： H04B1/48

摘要： Systems, methods, and apparatuses may provide for antenna switch controllers. An example antenna switch controller may include: a plurality of antenna switches commonly connected to one or more antennas, where each of the plurality of antenna switches includes a plurality of stacked transistors, where one of the plurality of antenna switches is enabled when transmitting or receiving one or more radio frequency (RF) signals via the one or more antennas; a voltage generator that receives an external supply voltage from a battery, where the voltage generator generates an internal supply voltage, where the internal supply voltage remains constant despite fluctuations in the external supply voltage from the battery; a clock buffer that generates clock signals from the constant internal supply voltage; and a charge pump that receives the clock signals and generates a constant negative voltage, where the constant negative voltage is for biasing of one or more of the plurality of antenna switches that are disabled.

摘要翻译： 系统，方法和装置可以提供天线开关控制器。 示例性天线开关控制器可以包括：共同连接到一个或多个天线的多个天线开关，其中多个天线开关中的每一个天线开关包括多个堆叠晶体管，其中多个天线开关中的一个在发送或接收时被使能 经由一个或多个天线的一个或多个射频（RF）信号; 电压发生器，其从电池接收外部电源电压，其中电压发生器产生内部电源电压，其中内部电源电压保持恒定，尽管来自电池的外部电源电压的波动; 一个从恒定的内部电源电压产生时钟信号的时钟缓冲器; 以及电荷泵，其接收时钟信号并产生恒定的负电压，其中恒定的负电压用于对被禁用的多个天线开关中的一个或多个的偏置。

公开(公告)号：US20080079653A1

公开(公告)日：2008-04-03

申请号：US11857322

申请日：2007-09-18

申请人： Minsik Ahn ,  Chang-Ho Lee ,  Changhyuk Cho ,  Jaejoon Chang ,  Wangmyong Woo ,  Haksun Kim ,  Joy Laskar

发明人： Minsik Ahn ,  Chang-Ho Lee ,  Changhyuk Cho ,  Jaejoon Chang ,  Wangmyong Woo ,  Haksun Kim ,  Joy Laskar

IPC分类号： H03K17/687 ,  H01Q1/00

CPC分类号： H03K17/693 ,  H03K17/063 ,  H03K17/102 ,  H03K2217/0018 ,  H04B1/48

摘要： Embodiments of the invention may provide for a CMOS antenna switch, which may be referred to as a CMOS SP4T switch. The CMOS antenna switch may operate at a plurality of frequencies, perhaps around 900 MHz and 1.9 GHz according to an embodiment of the invention. The CMOS antenna switch may include both a receiver switch and a transmit switch. The receiver switch may utilize a multi-stack transistor with body substrate tuning to block high power signals from the transmit path as well as to maintain low insertion loss at the receiver path. On the other hand, in the transmit switch, a body substrate tuning technique may be applied to maintain high power delivery to the antenna. Example embodiments of the CMOS antenna switch may provide for 31 dBm P 1 dB at both bands (e.g., 900 MHz and 1.8 GHz). In addition, a 0.9 dB and −1.1 dB insertion loss at 900 MHz and 1.9 GHz, respectively, may be obtained according to example embodiments of the invention.

摘要翻译： 本发明的实施例可以提供CMOS天线开关，其可以被称为CMOS SP4T开关。 根据本发明的实施例，CMOS天线开关可以以多个频率操作，可能大约在900MHz和1.9GHz。 CMOS天线开关可以包括接收器开关和发送开关。 接收器开关可以利用具有主体衬底调谐的多层晶体管来阻挡来自发射路径的高功率信号以及在接收器路径处保持低的插入损耗。 另一方面，在发送开关中，可以应用主体衬底调谐技术来保持对天线的高功率输送。 CMOS天线开关的示例实施例可以在两个频带（例如，900MHz和1.8GHz）处提供31dBm的P 1 dB。 此外，根据本发明的示例实施例，可以分别获得在900MHz和1.9GHz处的0.9dB和-1.1dB的插入损耗。

公开(公告)号：US07890063B2

公开(公告)日：2011-02-15

申请号：US11857322

申请日：2007-09-18

申请人： Minsik Ahn ,  Chang-Ho Lee ,  Changhyuk Cho ,  Jaejoon Chang ,  Wangmyong Woo ,  Haksun Kim ,  Joy Laskar

发明人： Minsik Ahn ,  Chang-Ho Lee ,  Changhyuk Cho ,  Jaejoon Chang ,  Wangmyong Woo ,  Haksun Kim ,  Joy Laskar

IPC分类号： H04B1/44

CPC分类号： H03K17/693 ,  H03K17/063 ,  H03K17/102 ,  H03K2217/0018 ,  H04B1/48

摘要： Embodiments of the invention may provide for a CMOS antenna switch, which may be referred to as a CMOS SP4T switch. The CMOS antenna switch may operate at a plurality of frequencies, perhaps around 900 MHz and 1.9 GHz according to an embodiment of the invention. The CMOS antenna switch may include both a receiver switch and a transmit switch. The receiver switch may utilize a multi-stack transistor with body substrate tuning to block high power signals from the transmit path as well as to maintain low insertion loss at the receiver path. On the other hand, in the transmit switch, a body substrate tuning technique may be applied to maintain high power delivery to the antenna. Example embodiments of the CMOS antenna switch may provide for 31 dBm P 1 dB at both bands (e.g., 900 MHz and 1.8 GHz). In addition, a 0.9 dB and −1.1 dB insertion loss at 900 MHz and 1.9 GHz, respectively, may be obtained according to example embodiments of the invention.

摘要翻译： 本发明的实施例可以提供CMOS天线开关，其可以被称为CMOS SP4T开关。 根据本发明的实施例，CMOS天线开关可以以多个频率操作，可能大约在900MHz和1.9GHz。 CMOS天线开关可以包括接收器开关和发送开关。 接收器开关可以利用具有主体衬底调谐的多层晶体管来阻挡来自发射路径的高功率信号以及在接收器路径处保持低的插入损耗。 另一方面，在发送开关中，可以应用主体衬底调谐技术来保持对天线的高功率输送。 CMOS天线开关的示例实施例可以在两个频带（例如，900MHz和1.8GHz）处提供31dBm的P 1 dB。 此外，根据本发明的示例实施例，可以分别获得在900MHz和1.9GHz处的0.9dB和-1.1dB的插入损耗。

公开(公告)号：US07772816B2

公开(公告)日：2010-08-10

申请号：US11872519

申请日：2007-10-15

申请人： Changhyuk Cho ,  Chang-Ho Lee ,  Jaejoon Chang ,  Wangmyong Woo ,  Haksun Kim ,  Joy Laskar

发明人： Changhyuk Cho ,  Chang-Ho Lee ,  Jaejoon Chang ,  Wangmyong Woo ,  Haksun Kim ,  Joy Laskar

IPC分类号： G05F1/40 ,  G05F3/16

CPC分类号： G05F1/56

摘要： Embodiments of the invention may provide for a load regulation tuner that reduces the load regulation effect. The load regulation tuner may include a load current controlled current source that is responsive to a load current from a power transistor of a linear regulator, where the load current controlled current source includes a sensing transistor that generates a fraction of the load current as a sensed partial load current. The load regulation tuner may also include a resistor in parallel with a load current controlled current source, and where the paralleled resistor and the load current controlled current source form at least a portion of a feedback block that adjusts an operation of the linear regulator to provide a substantially constant load voltage.

摘要翻译： 本发明的实施例可以提供减轻负载调节效应的负载调节调谐器。 负载调节调谐器可以包括响应于来自线性调节器的功率晶体管的负载电流的负载电流受控电流源，其中负载电流受控电流源包括感测晶体管，其产生负载电流的一部分作为感测 部分负载电流。 负载调节调谐器还可以包括与负载电流控制的电流源并联的电阻器，并且其中并联的电阻器和负载电流受控电流源形成至少一部分反馈块，其调整线性调节器的操作以提供 基本恒定的负载电压。

公开(公告)号：US20080088286A1

公开(公告)日：2008-04-17

申请号：US11872519

申请日：2007-10-15

申请人： Changhyuk Cho ,  Chang-Ho Lee ,  Jaejoon Chang ,  Wangmyong Woo ,  Haksun Kim ,  Joy Laskar

发明人： Changhyuk Cho ,  Chang-Ho Lee ,  Jaejoon Chang ,  Wangmyong Woo ,  Haksun Kim ,  Joy Laskar

IPC分类号： G05F1/565

CPC分类号： G05F1/56

摘要： Embodiments of the invention may provide for a load regulation tuner that reduces the load regulation effect. The load regulation tuner may include a load current controlled current source that is responsive to a load current from a power transistor of a linear regulator, where the load current controlled current source includes a sensing transistor that generates a fraction of the load current as a sensed partial load current. The load regulation tuner may also include a resistor in parallel with a load current controlled current source, and where the paralleled resistor and the load current controlled current source form at least a portion of a feedback block that adjusts an operation of the linear regulator to provide a substantially constant load voltage.

摘要翻译： 本发明的实施例可以提供减轻负载调节效应的负载调节调谐器。 负载调节调谐器可以包括响应于来自线性调节器的功率晶体管的负载电流的负载电流受控电流源，其中负载电流受控电流源包括感测晶体管，其产生负载电流的一部分作为感测 部分负载电流。 负载调节调谐器还可以包括与负载电流控制的电流源并联的电阻器，并且其中并联的电阻器和负载电流受控电流源形成至少一部分反馈块，其调整线性调节器的操作以提供 基本恒定的负载电压。