公开(公告)号：US20130303095A1

公开(公告)日：2013-11-14

申请号：US13942589

申请日：2013-07-15

Applicant: BROADCOM CORPORATION

Inventor： Ahmad MIRZAEI ,  John LEETE ,  Hooman DARABI

IPC: H04B1/62

CPC classification number: H04B1/62 ,  H04B1/0458 ,  H04B2001/0416

Abstract: An apparatus includes a dynamically configurable transformer configured to provide a gain to a target signal. The gain is dynamically configurable. The dynamically configurable transformer includes at least one parallel resistive element configured to be dynamically activated in parallel with a load.

Abstract translation: 一种装置包括被配置为向目标信号提供增益的动态可配置变压器。 增益是可动态配置的。 动态可配置的变压器包括至少一个并联电阻元件，其被配置为与负载并联地动态地激活。

公开(公告)号：US20130127555A1

公开(公告)日：2013-05-23

申请号：US13740939

申请日：2013-01-14

Applicant: Broadcom Corporation

Inventor： Yuyu CHANG ,  John LEETE ,  Walid AHMED ,  Wei LUO

IPC: H03B5/02

CPC classification number: H03B5/02 ,  H03B5/04 ,  H03B5/32 ,  H03B5/368 ,  H03B2200/0034 ,  H03L1/00

Abstract: Methods and systems are provided to calibrate an oscillator circuit to reduce frequency pulling as a result of a change in power to a portion of the oscillator circuit. In an embodiment, an oscillator is coupled to a clock buffer circuit and a tuning capacitor configured to tune a frequency of the oscillator to a baseline frequency required for cellular communications. A change in power to the clock buffer circuit initiates a change in an amount of capacitance seen by the oscillator, which negatively impacts the tuning of the oscillator. A register stores a frequency offset caused by the change in power, and the tuning capacitor is adjusted, using the frequency offset, in response to the change in power, such that the total amount of capacitance seen by the oscillator is not changed when the change in power occurs.

Abstract translation: 提供了方法和系统来校准振荡器电路，以减少振荡器电路的一部分功率变化导致的频率拉动。 在一个实施例中，振荡器耦合到时钟缓冲器电路和调谐电容器，其被配置为将振荡器的频率调谐到蜂窝通信所需的基准频率。 时钟缓冲电路的功率变化启动振荡器看到的电容量的变化，这对振荡器的调谐产生负面影响。 寄存器存储由功率变化引起的频率偏移，并且使用频率偏移来调整调谐电容器以响应功率的变化，使得当变化时振荡器所看到的电容量总和没有改变 发生电力。