公开(公告)号：US20130210376A1

公开(公告)日：2013-08-15

申请号：US13370151

申请日：2012-02-09

Applicant: Joonhoi Hur ,  Rahmi Hezar ,  Lei Ding ,  Baher S. Haroun

Inventor： Joonhoi Hur ,  Rahmi Hezar ,  Lei Ding ,  Baher S. Haroun

IPC: H04B1/04

CPC classification number: H03F1/0294 ,  H03F1/0222 ,  H03F1/3241 ,  H03F1/3247 ,  H04B1/0475 ,  H04B2001/0425

Abstract: A radio frequency (RF) transmitter is provided. The RF transmitter includes first and second drivers that are configured to receive first and second sets of complementary RF signals. Restoration circuits are coupled to the first and second drivers, and a bridge circuit is coupled to the first and second restoration circuits. By having the restoration circuits and the bridge circuit, a common mode impedance and a differential impedance can be provided, where the common mode impedance is lower than the differential impedance.

Abstract translation: 提供射频（RF）发射机。 RF发射器包括被配置为接收第一和第二组互补RF信号的第一和第二驱动器。 恢复电路耦合到第一和第二驱动器，并且桥接电路耦合到第一和第二恢复电路。 通过具有恢复电路和桥接电路，可以提供共模阻抗和差分阻抗，其中共模阻抗低于差分阻抗。

公开(公告)号：US08471747B1

公开(公告)日：2013-06-25

申请号：US13323511

申请日：2011-12-12

Applicant: Lei Ding ,  Rahmi Hezar ,  Joonhoi Hur ,  Baher S. Haroun

Inventor： Lei Ding ,  Rahmi Hezar ,  Joonhoi Hur ,  Baher S. Haroun

IPC: H03M1/82

CPC classification number: H03K7/08

Abstract: A method is provided. A noise shaped signal having a plurality of instants is generated with each instant being associated with at least one of a plurality of output levels. A next phase is selected for each instant, where each next phase is a circularly shifted phase based at least in part on a previous phase for the associated output level for its instant. A plurality of PWM signals is then generated using the phase for each instant, and an amplified signal is generated from the plurality of PWM signals.

Abstract translation: 提供了一种方法。 产生具有多个时刻的噪声整形信号，每个时刻与多个输出电平中的至少一个相关联。 对于每个时刻选择下一阶段，其中每个下一阶段至少部分地基于相对于其瞬时的相关输出电平的先前相位的循环移位相位。 然后使用每一瞬间的相位产生多个PWM信号，并且从多个PWM信号产生放大的信号。

公开(公告)号：US20130156089A1

公开(公告)日：2013-06-20

申请号：US13327247

申请日：2011-12-15

Applicant: Rahmi Hezar ,  Lei Ding ,  Joonhoi Hur ,  Baher S. Haroun

Inventor： Rahmi Hezar ,  Lei Ding ,  Joonhoi Hur ,  Baher S. Haroun

IPC: H03K7/08 ,  H04L27/00

CPC classification number: H04L1/0071 ,  H04B1/04

Abstract: A method for transmitting radio frequency (RF) signals is provided. In-phase (I) and quadrature (Q) signals are received and filtered using sigma-delta modulation. I and Q pulse width modulation signals are generated from the filtered I and Q signals and interleaved so as to generate a time-interleaved signal. The time-interleaved signal is then amplified to generate the RF signals.

Abstract translation: 提供了一种用于发射射频（RF）信号的方法。 使用Σ-Δ调制接收和滤波同相（I）和正交（Q）信号。 从经滤波的I和Q信号产生I和Q脉宽调制信号并进行交织，以产生时间交织的信号。 然后对时间交织的信号进行放大以产生RF信号。

公开(公告)号：US20130147533A1

公开(公告)日：2013-06-13

申请号：US13323511

申请日：2011-12-12

Applicant: Lei Ding ,  Rahmi Hezar ,  Joonhoi Hur ,  Baher S. Haroun

Inventor： Lei Ding ,  Rahmi Hezar ,  Joonhoi Hur ,  Baher S. Haroun

IPC: H03K7/08

CPC classification number: H03K7/08

Abstract: A method is provided. A noise shaped signal having a plurality of instants is generated with each instant being associated with at least one of a plurality of output levels. A next phase is selected for each instant, where each next phase is a circularly shifted phase based at least in part on a previous phase for the associated output level for its instant. A plurality of PWM signals is then generated using the phase for each instant, and an amplified signal is generated from the plurality of PWM signals.

Abstract translation: 提供了一种方法。 产生具有多个时刻的噪声整形信号，每个时刻与多个输出电平中的至少一个相关联。 对于每个时刻选择下一阶段，其中每个下一阶段至少部分地基于相对于其瞬时的相关输出电平的先前相位的循环移位相位。 然后使用每一瞬间的相位产生多个PWM信号，并且从多个PWM信号产生放大的信号。