公开(公告)号：US07167686B2

公开(公告)日：2007-01-23

申请号：US10350407

申请日：2003-01-24

申请人： Puay-Hoe Andrew See ,  James Jaffee ,  Steven Mollenkopf ,  Sandor Szabo

发明人： Puay-Hoe Andrew See ,  James Jaffee ,  Steven Mollenkopf ,  Sandor Szabo

IPC分类号： H04B1/40

CPC分类号： H03C3/0966 ,  H03C3/40 ,  H03D7/18 ,  H03D2200/0086 ,  H03L7/18 ,  H04B1/403

摘要： A wireless transceiver includes a transmitter having a harmonic rejection mixer and an RF output phase-locked loop in a two step up-conversion architecture, and a direct conversion receiver. The transmitter includes a local oscillator for producing a signal at a multiple of an intermediate frequency, a quadrature modulator harmonic rejection mixer responsive to the signal at the multiple of the intermediate frequency for modulating in-phase and quadrature-phase base-band signals to produce an intermediate frequency signal, a filter responsive to the intermediate frequency signal for producing a filtered intermediate frequency signal, and an RF output offset phase-locked loop responsive to the filtered intermediate frequency signal and the signal at the multiple of the intermediate frequency for producing an RF transmission signal. The harmonic rejection mixer reduces filtering requirements to facilitate a high level of circuit integration. The local oscillator may use a integer or fractional-N phase-locked loop.

摘要翻译： 无线收发器包括具有谐波抑制混频器的发射器和两级升压转换架构中的RF输出锁相环以及直接转换接收器。 发射机包括用于产生中频倍数的信号的本地振荡器，响应于中频倍数处的信号的正交调制器谐波抑制混频器，用于调制同相和正交相位基带信号以产生 中频信号，响应于用于产生滤波后的中频信号的中频信号的滤波器，以及响应于滤波的中频信号的RF输出偏移锁相环以及中频倍数的信号，以产生 RF传输信号。 谐波抑制混频器降低了滤波要求，以促进高水平的电路集成。 本地振荡器可以使用整数或分数N锁相环。

公开(公告)号：US06377786B2

公开(公告)日：2002-04-23

申请号：US09829569

申请日：2001-04-09

申请人： Steven Mollenkopf ,  James H. Thompson

发明人： Steven Mollenkopf ,  James H. Thompson

IPC分类号： H01Q1112

CPC分类号： H04W52/10 ,  H03G3/3042 ,  H04B7/18513

摘要： The present invention comprises a system and method for gain control of individual narrowband channels using a wideband power measurement. The present invention comprises a transmit power tracking loop which controls the power of the transmitted signal by controlling the gain applied to the signal. The function of the transmit power tracking loop is to measure power, accept commands for power adjustment, and adjust the power. Gain control is performed by producing an error signal using the comparison of measurements of a total of estimated powers of each narrowband signal and a measurement of the modulated wideband signal. In addition, open loop control is performed by accepting open loop commands generated by an algorithm.

摘要翻译： 本发明包括用于使用宽带功率测量对单个窄带信道进行增益控制的系统和方法。 本发明包括发射功率跟踪环路，其通过控制施加于该信号的增益来控制发射信号的功率。 发射功率跟踪回路的功能是测量功率，接受功率调节命令，并调整功率。 通过使用每个窄带信号的估计功率的总和与调制的宽带信号的测量的测量的比较来产生误差信号来执行增益控制。 另外，通过接受由算法产生的开环命令来执行开环控制。

公开(公告)号：US06496536B2

公开(公告)日：2002-12-17

申请号：US09277029

申请日：1999-03-25

申请人： Steven Mollenkopf

发明人： Steven Mollenkopf

IPC分类号： H04B1700

CPC分类号： H04B7/18543 ,  H04B17/327

摘要： A system and method for estimating the power of a signal. The signal is compared to and separated into a plurality of ranges. Each range is assigned a particular output value. The output values approximate the square of the input signal based on known characteristics of the input signal. A low pass filter is used to average a plurality of the output values.

摘要翻译： 一种用于估计信号功率的系统和方法。 将信号与多个范围进行比较并分离。 每个范围都被分配一个特定的输出值。 基于输入信号的已知特性，输出值近似于输入信号的平方。 使用低通滤波器来平均多个输出值。

公开(公告)号：US06252915B1

公开(公告)日：2001-06-26

申请号：US09150545

申请日：1998-09-09

申请人： Steven Mollenkopf ,  James H. Thompson

发明人： Steven Mollenkopf ,  James H. Thompson

IPC分类号： H04K102

CPC分类号： H04W52/10 ,  H03G3/3042 ,  H04B7/18513

摘要： The present invention comprises a system and method for gain control of individual narrowband channels using a wideband power measurement. The present invention comprises a transmit power tracking loop which controls the power of the transmitted signal by controlling the gain applied to the signal. The function of the transmit power tracking loop is to measure power, accept commands for power adjustment, and adjust the power. Gain control is performed by producing an error signal using the comparison of measurements of a total of estimated powers of each narrowband signal and a measurement of the modulated wideband signal In addition, open loop control is performed by accepting open loop commands generated by an algorithm.

摘要翻译： 本发明包括用于使用宽带功率测量对单个窄带信道进行增益控制的系统和方法。 本发明包括发射功率跟踪环路，其通过控制施加于该信号的增益来控制发射信号的功率。 发射功率跟踪回路的功能是测量功率，接受功率调节命令，并调整功率。 通过使用每个窄带信号的估计功率的总和和调制的宽带信号的测量的测量的比较来产生误差信号来执行增益控制。此外，通过接受由算法产生的开环命令来执行开环控制。