公开(公告)号：US20120135698A1

公开(公告)日：2012-05-31

申请号：US12957247

申请日：2010-11-30

申请人： Hongyan Yan ,  Bhushan Shanti Asuri ,  Vinod V. Panikkath ,  Janakiram G. Sankaranarayanan ,  Himanshu Khatri

发明人： Hongyan Yan ,  Bhushan Shanti Asuri ,  Vinod V. Panikkath ,  Janakiram G. Sankaranarayanan ,  Himanshu Khatri

IPC分类号： H04W52/00

CPC分类号： H03H7/24

摘要： Disclosed are circuits, techniques and methods for implementing an attenuator in a signal transmission path. In one particular implementation, an attenuation may be adjusted based, at least in part, on a control signal. In another implementation, such an attenuation may be adjusted in coarse increments by varying one or more gate voltages applied one or more transistors. In yet another implementation, adjusting said attenuation in fine increments by varying a bias voltage applied to at least one level shifter.

摘要翻译： 公开了用于在信号传输路径中实现衰减器的电路，技术和方法。 在一个特定实现中，可以至少部分地基于控制信号来调整衰减。 在另一实现中，可以通过改变施加一个或多个晶体管的一个或多个栅极电压来以粗略增量来调整这种衰减。 在又一实施方案中，通过改变施加到至少一个电平移位器的偏置电压来以微小增量来调节所述衰减。

公开(公告)号：US20120013387A1

公开(公告)日：2012-01-19

申请号：US12836779

申请日：2010-07-15

申请人： Janakiram G. Sankaranarayanan ,  Bhushan S. Asuri ,  Vinod V. Panikkath ,  Hongyan Yan ,  Himanshu Khatri ,  Maulin Bhagat

发明人： Janakiram G. Sankaranarayanan ,  Bhushan S. Asuri ,  Vinod V. Panikkath ,  Hongyan Yan ,  Himanshu Khatri ,  Maulin Bhagat

IPC分类号： G06G7/12

CPC分类号： H03D7/1441 ,  H03D7/1458 ,  H03D7/165 ,  H03D2200/0023 ,  H03H7/1775 ,  H03H7/422 ,  H03H7/465

摘要： An RF transmitter capable of transmitting over a wide range of frequencies includes a mixer, a wideband high-Q balun, a first driver amplifier and a second driver amplifier. The balun has a single primary winding and two secondary windings. A differential output of the mixer is coupled to the primary winding. A first of the two secondary windings is coupled to drive the first driver amplifier. A second of the two secondary windings is coupled to drive the second driver amplifier. One driver amplifier is used when transmitting at lower frequencies whereas the other driver amplifier is used when transmitting at higher frequencies. By appropriate sizing of the inductances of the secondary windings and by switching out one of the secondary windings at certain times, the balun is tunable to operate over the wide frequency range while having a high quality factor Q, thereby facilitating reduced power consumption while simultaneously meeting performance requirements.

摘要翻译： 能够在宽频率范围内发射的RF发射机包括混频器，宽带高Q平衡 - 不平衡变换器，第一驱动器放大器和第二驱动器放大器。 平衡 - 不平衡转换器具有单个初级绕组和两个次级绕组。 混频器的差分输出耦合到初级绕组。 两个次级绕组中的第一个被耦合以驱动第一驱动放大器。 两个次级绕组中的第二个被耦合以驱动第二个驱动放大器。 当以较低频率发射时使用一个驱动放大器，而在较高频率下传输时使用另一个驱动放大器。 通过适当地确定次级绕组的电感和通过在某些时间切换出一个次级绕组，平衡 - 不平衡变换器可以在宽频率范围内工作，同时具有高品质因数Q，从而有助于降低功耗，同时满足 性能要求。

公开(公告)号：US08903344B2

公开(公告)日：2014-12-02

申请号：US12957247

申请日：2010-11-30

申请人： Hongyan Yan ,  Bhushan Shanti Asuri ,  Vinod V Panikkath ,  Janakiram G Sankaranarayanan ,  Himanshu Khatri

发明人： Hongyan Yan ,  Bhushan Shanti Asuri ,  Vinod V Panikkath ,  Janakiram G Sankaranarayanan ,  Himanshu Khatri

IPC分类号： H04B1/06 ,  H03H7/24

CPC分类号： H03H7/24

摘要： Disclosed are circuits, techniques and methods for implementing an attenuator in a signal transmission path. In one particular implementation, an attenuation may be adjusted based, at least in part, on a control signal. In another implementation, such an attenuation may be adjusted in coarse increments by varying one or more gate voltages applied one or more transistors. In yet another implementation, adjusting said attenuation in fine increments by varying a bias voltage applied to at least one level shifter.

摘要翻译： 公开了用于在信号传输路径中实现衰减器的电路，技术和方法。 在一个特定实现中，可以至少部分地基于控制信号来调整衰减。 在另一实现中，可以通过改变施加一个或多个晶体管的一个或多个栅极电压来以粗略增量来调整这种衰减。 在又一实施方案中，通过改变施加到至少一个电平移位器的偏置电压来以微小增量来调节所述衰减。

公开(公告)号：US08493126B2

公开(公告)日：2013-07-23

申请号：US12836779

申请日：2010-07-15

申请人： Janakiram G. Sankaranarayanan ,  Bhushan S. Asuri ,  Vinod V. Panikkath ,  Hongyan Yan ,  Himanshu Khatri ,  Maulin Bhagat

发明人： Janakiram G. Sankaranarayanan ,  Bhushan S. Asuri ,  Vinod V. Panikkath ,  Hongyan Yan ,  Himanshu Khatri ,  Maulin Bhagat

IPC分类号： G06G7/12

CPC分类号： H03D7/1441 ,  H03D7/1458 ,  H03D7/165 ,  H03D2200/0023 ,  H03H7/1775 ,  H03H7/422 ,  H03H7/465

摘要： An RF transmitter capable of transmitting over a wide range of frequencies includes a mixer, a wideband high-Q balun, a first driver amplifier and a second driver amplifier. The balun has a single primary winding and two secondary windings. A differential output of the mixer is coupled to the primary winding. A first of the two secondary windings is coupled to drive the first driver amplifier. A second of the two secondary windings is coupled to drive the second driver amplifier. One driver amplifier is used when transmitting at lower frequencies whereas the other driver amplifier is used when transmitting at higher frequencies. By appropriate sizing of the inductances of the secondary windings and by switching out one of the secondary windings at certain times, the balun is tunable to operate over the wide frequency range while having a high quality factor Q, thereby facilitating reduced power consumption while simultaneously meeting performance requirements.

摘要翻译： 能够在宽频率范围内发射的RF发射机包括混频器，宽带高Q平衡 - 不平衡变换器，第一驱动器放大器和第二驱动器放大器。 平衡 - 不平衡转换器具有单个初级绕组和两个次级绕组。 混频器的差分输出耦合到初级绕组。 两个次级绕组中的第一个被耦合以驱动第一驱动放大器。 两个次级绕组中的第二个被耦合以驱动第二个驱动放大器。 当以较低频率发射时使用一个驱动放大器，而在较高频率下传输时使用另一个驱动放大器。 通过适当地确定次级绕组的电感和通过在某些时间切换出一个次级绕组，平衡 - 不平衡变换器可以在宽频率范围内工作，同时具有高品质因数Q，从而有助于降低功耗，同时满足 性能要求。