公开(公告)号：US5642081A

公开(公告)日：1997-06-24

申请号：US548428

申请日：1995-10-26

申请人： Donald M. Bosch ,  Steven J. Loughran ,  Ronald D. Jesme

发明人： Donald M. Bosch ,  Steven J. Loughran ,  Ronald D. Jesme

IPC分类号： G01S7/40 ,  G01S13/34 ,  H03B23/00 ,  H03C3/08 ,  H03L7/08 ,  G01S13/32

CPC分类号： G01S7/4008 ,  H03B23/00 ,  G01S13/34 ,  H03C3/08

摘要： The present invention overcomes the problems discussed above by providing a linearizer apparatus for providing a linear ramp modulation for a voltage control oscillator (VCO), including voltage controlled oscillator means (VCO) having input and output terminals, and means for producing the output signal at its output terminal at the output frequency such that the output frequency corresponds to the voltage of a modulated tuning signal applied to the input terminal. A signal division means is coupled to the output of the VCO for producing a divided signal. A glass bulk acoustic delay means is coupled to the signal division means for producing a delayed signal. A first comparison signal generator means is coupled to the divided signal and the delayed signal for producing an IF signal which is proportional to the VCO output signal non-linearities. A reference oscillator means is provided for producing a reference signal. A second comparison signal generator means is coupled to the reference signal and the IF signal for producing an error signal. Finally, a summing means is coupled to a modulation waveform generator means and the error signal for producing a modulated tuning signal which is input to the VCO to frequency modulate the VCO.

摘要翻译： 本发明通过提供一种用于为压控振荡器（VCO）提供线性斜坡调制的线性化装置克服了上述问题，该电压控制振荡器包括具有输入和输出端的压控振荡器装置（VCO），以及用于产生输出信号的装置 其输出端子处于输出频率，使得输出频率对应于施加到输入端子的调制调谐信号的电压。 信号分离装置耦合到VCO的输出端，以产生分频信号。 玻璃体声延迟装置耦合到信号分离装置，用于产生延迟信号。 第一比较信号发生器装置耦合到分频信号和延迟信号，用于产生与VCO输出信号非线性成比例的IF信号。 提供用于产生参考信号的参考振荡器装置。 第二比较信号发生器装置耦合到参考信号和IF信号以产生误差信号。 最后，求和装置耦合到调制波形发生器装置和用于产生调制调谐信号的误差信号，该调制调谐信号被输入到VCO以对VCO进行频率调制。

公开(公告)号：US07392015B1

公开(公告)日：2008-06-24

申请号：US10753502

申请日：2004-01-07

申请人： Charles S. Farlow ,  Donald M. Bosch ,  Randall A. Kroenke ,  Steven J. Loughran

发明人： Charles S. Farlow ,  Donald M. Bosch ,  Randall A. Kroenke ,  Steven J. Loughran

IPC分类号： H04B17/00

CPC分类号： H04B17/21 ,  H04B7/06 ,  H04B7/0825

摘要： Calibration methods and structures are provided for wireless communications devices that compensate across a signal bandwidth for relative gain and phase errors between spatial communication channels while utilizing existing transceiver structures and facilitating the use of frequency-domain spatial processing. The methods and structures are directed to time-division duplex (TDD) systems, and are particularly suited to those that incorporate orthogonal frequency division multiplexing (OFDM).

摘要翻译： 为无线通信设备提供了校准方法和结构，用于在利用现有的收发器结构并且促进使用频域空间处理的同时，在信号带宽之间补偿空间通信信道之间的相对增益和相位误差。 这些方法和结构涉及时分双工（TDD）系统，并且特别适用于那些并入正交频分复用（OFDM）的系统。

公开(公告)号：US5266957A

公开(公告)日：1993-11-30

申请号：US966275

申请日：1992-10-26

申请人： Donald M. Bosch ,  Steven J. Loughran ,  Scott M. Thomas

发明人： Donald M. Bosch ,  Steven J. Loughran ,  Scott M. Thomas

IPC分类号： H03B5/18 ,  H03C3/20 ,  G01S13/26 ,  H03B7/06

CPC分类号： H03B5/1852 ,  H03B2200/0028 ,  H03C3/20

摘要： A voltage controlled oscillator is disclosed in a "ring" configuration using two BJTs. The design uses an active feedback topology which eliminates the need for a tank circuit for oscillation to occur. The design also provides for the mixing function to be performed by one of the BJTs.

摘要翻译： 在使用两个BJT的“环”配置中公开了压控振荡器。 该设计采用有源反馈拓扑结构，无需使用振荡电路进行振荡。 该设计还提供了由BJT之一执行的混合功能。