公开(公告)号：US20080002788A1

公开(公告)日：2008-01-03

申请号：US11852939

申请日：2007-09-10

申请人： Siraj Akhtar ,  Mehmet Ipek ,  Robert Staszewski

发明人： Siraj Akhtar ,  Mehmet Ipek ,  Robert Staszewski

IPC分类号： H04L27/36 ,  H03C3/38 ,  H04B1/40

CPC分类号： H04L27/361 ,  H03B19/14 ,  H03C5/00 ,  H04B1/0483

摘要： A novel and useful apparatus for and method of local oscillator generation employing an exception handling mechanism that permits an oscillator having a limited modulation range to handle the large modulation ranges demanded by modern wideband wireless standards such as 3G WCDMA, etc. A controllable oscillator generates an RF signal having four quadrature phases in accordance with an input command signal. An exception handler compares the frequency command information against a threshold. If it exceeds the threshold a phase jump and a residue frequency command are generated. The residue frequency command is input to an oscillator which is operative to generate an RF signal having four quadrature phases. The phase jump is input to a quadrature switch which functions to select one of the four quadrature phase signals as the output RF signal which is then fed to a digital power amplifier.

摘要翻译： 一种新颖有用的本地振荡器生成装置和采用异常处理机制的方法，其允许具有有限调制范围的振荡器来处理诸如3G WCDMA等现代宽带无线标准所要求的大调制范围。可控振荡器产生 RF信号根据输入命令信号具有四个正交相位。 异常处理程序将频率命令信息与阈值进行比较。 如果超过阈值，则产生相位跳变和残留频率指令。 剩余频率指令被输入到可产生具有四个正交相位的RF信号的振荡器。 相位跳变被输入到正交开关，其用于选择四个正交相位信号中的一个作为输出RF信号，然后馈送到数字功率放大器。

公开(公告)号：US07286017B2

公开(公告)日：2007-10-23

申请号：US10541855

申请日：2003-12-05

申请人： Heinrich Schemmann ,  Mehmet Ipek ,  Sabine Roth

发明人： Heinrich Schemmann ,  Mehmet Ipek ,  Sabine Roth

IPC分类号： H03F3/68

CPC分类号： H03F3/72 ,  H03F2203/7203 ,  H03F2203/7206 ,  H03F2203/7227 ,  H03G1/0088

摘要： A variable-gain RF amplifier arrangement whose input impedance is essentially independent of the selected gain is proposed, which has a large number of selectable elementary amplifiers, with an input signal being scaled and the input impedance being set to be the same by means of switchable current limiting elements upstream of the elementary amplifiers, which are associated with the elementary amplifiers. The circuit also has a low noise level, which is largely independent of the selected gain, and good linearity. A broadcast radio receiver as well as a receiver for receiving data signals using an amplifier according to the invention are also proposed.

摘要翻译： 提出了一种可变增益RF放大器装置，其输入阻抗基本上与所选择的增益无关，其具有大量可选择的基本放大器，其中输入信号被缩放，并且通过可切换的输入信号将输入阻抗设置为相同 与基本放大器相关联的基本放大器上游的限流元件。 该电路还具有低噪声电平，这在很大程度上与选定的增益无关，线性良好。 还提出了广播无线电接收机以及使用根据本发明的放大器接收数据信号的接收机。

公开(公告)号：US06549082B2

公开(公告)日：2003-04-15

申请号：US09887458

申请日：2001-06-22

申请人： Mehmet Ipek ,  Martin Rieger ,  Heinrich Schemmann

发明人： Mehmet Ipek ,  Martin Rieger ,  Heinrich Schemmann

IPC分类号： H03L700

CPC分类号： H03L7/087 ,  H03L7/0895 ,  H03L7/0995

摘要： The high frequency oscillator comprises a reference oscillator, a phase-locked loop circuit with a phase frequency detector, a charge pump, a ring oscillator and a divider, the reference oscillator being coupled to the phase frequency detector for frequency control. The ring oscillator is a symmetrical delay cell oscillator containing two amplifiers with a dual output stage for providing I/Q output signal generation. The reference oscillator works in the range of 1.25-1.5 GHz and is a Colpitts type digital controlled frequency synthesizer with an external tank circuit for providing a low phase noise, and the dividing factor of the divider is four for providing a tuned output range of 5 to 6 GHz. The phase-locked loop circuit is integrated together with the reference oscillator into an integrated circuit, using advantageously a BICMOS Silicon/Germanium process, which is well suited for RF applications.

摘要翻译： 高频振荡器包括参考振荡器，具有相位频率检测器的锁相环电路，电荷泵，环形振荡器和分频器，参考振荡器耦合到用于频率控制的相位频率检测器。 环形振荡器是一个对称的延迟单元振荡器，包含两个具有双输出级的放大器，用于提供I / Q输出信号的产生。 参考振荡器工作在1.25-1.5 GHz的范围内，是一种Colpitts型数字控制频率合成器，具有外部振荡电路，用于提供低相位噪声，分频器的分频系数为4，用于提供5的调谐输出范围 至6 GHz。 锁相环电路与参考振荡器集成在一起，集成电路，有利地采用了BICMOS硅/锗工艺，非常适合RF应用。

公开(公告)号：US07936229B2

公开(公告)日：2011-05-03

申请号：US11852939

申请日：2007-09-10

申请人： Siraj Akhtar ,  Mehmet Ipek ,  Robert B. Staszewski

发明人： Siraj Akhtar ,  Mehmet Ipek ,  Robert B. Staszewski

IPC分类号： H03B27/00 ,  H03C1/00 ,  H03C3/00 ,  H03L7/00

CPC分类号： H04L27/361 ,  H03B19/14 ,  H03C5/00 ,  H04B1/0483

摘要： A novel and useful apparatus for and method of local oscillator generation employing an exception handling mechanism that permits an oscillator having a limited modulation range to handle the large modulation ranges demanded by modern wideband wireless standards such as 3G WCDMA, etc. A controllable oscillator generates an RF signal having four quadrature phases in accordance with an input command signal. An exception handler compares the frequency command information against a threshold. If it exceeds the threshold a phase jump and a residue frequency command are generated. The residue frequency command is input to an oscillator which is operative to generate an RF signal having four quadrature phases. The phase jump is input to a quadrature switch which functions to select one of the four quadrature phase signals as the output RF signal which is then fed to a digital power amplifier.

摘要翻译： 一种新颖有用的本地振荡器生成方法和采用异常处理机制的方法，其允许具有有限调制范围的振荡器来处理诸如3G WCDMA等现代宽带无线标准所要求的大调制范围。可控振荡器产生 RF信号根据输入命令信号具有四个正交相位。 异常处理程序将频率命令信息与阈值进行比较。 如果超过阈值，则产生相位跳变和残留频率指令。 剩余频率指令被输入到可产生具有四个正交相位的RF信号的振荡器。 相位跳变被输入到正交开关，其用于选择四个正交相位信号中的一个作为输出RF信号，然后馈送到数字功率放大器。

公开(公告)号：US20060125565A1

公开(公告)日：2006-06-15

申请号：US10541855

申请日：2003-12-05

申请人： Heinrich Schemmann ,  Mehmet Ipek ,  Sabine Roth

发明人： Heinrich Schemmann ,  Mehmet Ipek ,  Sabine Roth

IPC分类号： H03G3/10

CPC分类号： H03F3/72 ,  H03F2203/7203 ,  H03F2203/7206 ,  H03F2203/7227 ,  H03G1/0088

摘要： A variable-gain RF amplifier arrangement whose input impedance is essentially independent of the selected gain is proposed, which has a large number of selectable elementary amplifiers, with an input signal being scaled and the input impedance being set to be the same by means of switchable current limiting elements upstream of the elementary amplifiers, which are associated with the elementary amplifiers. The circuit also has a low noise level, which is largely independent of the selected gain, and good linearity. A broadcast radio receiver as well as a receiver for receiving data signals using an amplifier according to the invention are also proposed.

摘要翻译： 提出了一种可变增益RF放大器装置，其输入阻抗基本上与所选择的增益无关，其具有大量可选择的基本放大器，其中输入信号被缩放，并且通过可切换的输入信号将输入阻抗设置为相同 与基本放大器相关联的基本放大器上游的限流元件。 该电路还具有低噪声电平，这在很大程度上与选定的增益无关，线性良好。 还提出了广播无线电接收机以及使用根据本发明的放大器接收数据信号的接收机。