公开(公告)号：US5991139A

公开(公告)日：1999-11-23

申请号：US971744

申请日：1997-11-17

申请人： Walid Kamali ,  Brian Green ,  Herman Kruse

发明人： Walid Kamali ,  Brian Green ,  Herman Kruse

IPC分类号： H04N7/10 ,  H02H1/00

CPC分类号： H04N7/102

摘要： A protection circuit prevents a surge applied to one end of a signal line from being applied to a circuit connected to another end of the signal line. The protection circuit includes a first diode having an anode coupled to the signal line and a first capacitor having a first electrode coupled to a cathode of the first diode and a second electrode coupled to a first potential. A second capacitor has a first electrode coupled to the signal line and a second diode has a cathode coupled to a second electrode of said second capacitor and an anode coupled to the first potential. A first inductor is coupled between the cathode of the first diode and the cathode of the second diode. A power supply terminal is applied with a power supply potential and is coupled to one end of the first inductor.

摘要翻译： 保护电路防止施加到信号线的一端的浪涌被施加到连接到信号线的另一端的电路。 保护电路包括具有耦合到信号线的阳极的第一二极管和具有耦合到第一二极管的阴极的第一电极和耦合到第一电位的第二电极的第一电容器。 第二电容器具有耦合到信号线的第一电极，第二二极管具有耦合到所述第二电容器的第二电极的阴极和耦合到第一电位的阳极。 第一电感器耦合在第一二极管的阴极和第二二极管的阴极之间。 电源端子被施加电源电位并且耦合到第一电感器的一端。

公开(公告)号：US6097250A

公开(公告)日：2000-08-01

申请号：US296978

申请日：1999-04-22

申请人： Walid Kamali ,  Saleh R. Al-Araji

发明人： Walid Kamali ,  Saleh R. Al-Araji

IPC分类号： H03F3/60 ,  H03F3/68

CPC分类号： H03F3/604

摘要： An amplifier circuit (400) includes an input port (402) for receiving a signal and a first balun (404) for splitting the signal into first and second signals. First and second amplifiers (406, 408) are coupled to outputs of the first balun (404) for respectively amplifying the outputs of the first balun (404) to generate first and second amplified signals. Second and third baluns (410, 412) are coupled, respectively, to outputs of the first and second amplifiers (406, 408) for splitting, respectively, each of the first and second amplified signals into in-phase and out-of-phase components. The amplifier circuit (400) also includes third and fourth amplifiers (414, 416) coupled to outputs of the second balun (410) for respectively amplifying the outputs of the second balun (410) to generate third and fourth amplified signals and fifth and sixth amplifiers (418, 420) coupled to outputs of the third balun (412) for respectively amplifying the outputs of the third balun (412) to generate fifth and sixth amplified signals. A fourth balun (422) combines the third and fourth amplified signals into a first combined signal, and a fifth balun (424) combines the fifth and sixth amplified signals into a second combined signal. The amplifier circuit (400) further includes a combiner, such as an additional balun (326) or a summer (430), for combining the first and second combined signals to generate an amplifier output signal.

摘要翻译： 放大器电路（400）包括用于接收信号的输入端口（402）和用于将信号分成第一和第二信号的第一平衡 - 不平衡变换器（404）。 第一和第二放大器（406,408）耦合到第一平衡 - 不平衡变换器（404）的输出端，用于分别放大第一平衡 - 不平衡变换器（404）的输出以产生第一和第二放大信号。 第二和第三平衡不平衡变压器（410,412）分别耦合到第一和第二放大器（406,408）的输出，用于将第一和第二放大信号中的每一个分别分为同相和异相 组件。 放大器电路（400）还包括耦合到第二平衡 - 不平衡变换器（410）的输出的第三和第四放大器（414,416），用于分别放大第二平衡 - 不平衡变换器（410）的输出以产生第三和第四放大信号，第五和第六 放大器（418,420）耦合到第三平衡 - 不平衡变换器（412）的输出端，用于分别放大第三平衡 - 不平衡变换器（412）的输出以产生第五和第六放大信号。 第四平衡 - 不平衡变换器（422）将第三和第四放大信号组合成第一组合信号，第五平衡 - 不平衡变换器（424）将第五和第六放大信号组合成第二组合信号。 放大器电路（400）还包括组合器，诸如附加平衡 - 不平衡变换器（326）或加法器（430），用于组合第一和第二组合信号以产生放大器输出信号。

公开(公告)号：US07877022B2

公开(公告)日：2011-01-25

申请号：US11482440

申请日：2006-07-07

申请人： Walid Kamali

发明人： Walid Kamali

IPC分类号： H04B10/04

CPC分类号： H03H7/54

摘要： Disclosed herein are circuits and methods for reducing a thermally dependent gain swing. Exemplary embodiments include a resonant notch filter in parallel with a thermistor.

摘要翻译： 这里公开了用于减少热依赖增益摆动的电路和方法。 示例性实施例包括与热敏电阻并联的谐振陷波滤波器。

公开(公告)号：US20080008266A1

公开(公告)日：2008-01-10

申请号：US11482440

申请日：2006-07-07

申请人： Walid Kamali

发明人： Walid Kamali

IPC分类号： H04L27/00

CPC分类号： H03H7/54

摘要： Disclosed herein are circuits and methods for reducing a thermally dependent gain swing. Exemplary embodiments include a resonant notch filter in parallel with a thermistor.

摘要翻译： 这里公开了用于减少热依赖增益摆动的电路和方法。 示例性实施例包括与热敏电阻并联的谐振陷波滤波器。

公开(公告)号：US07599629B2

公开(公告)日：2009-10-06

申请号：US10456817

申请日：2003-06-06

申请人： Walid Kamali ,  John Skrobko

发明人： Walid Kamali ,  John Skrobko

IPC分类号： H04B10/06

CPC分类号： H04B10/6931

摘要： The present invention is directed towards an optical receiver including an open loop automatic gain control (AGC) circuit. Optical signals received by the optical receiver are converted to electrical signals via a photodiode. The electrical signals are subsequently amplified through an input and an output amplifier stage. The amplified signal is then converted to RF signals and provided to an output port for further transmission. Concurrently, the AGC circuit senses the input optical power level at the input photodiode. The input optical power level is compared with a reference voltage, thereby providing a difference voltage. The difference voltage is applied to input and output amplifier stages for correcting the electrical signals to ensure a constant output power level.

摘要翻译： 本发明涉及一种包括开环自动增益控制（AGC）电路的光接收机。 由光接收器接收的光信号通过光电二极管转换成电信号。 电信号随后通过输入和输出放大器级放大。 然后将放大的信号转换成RF信号并提供给输出端口用于进一步传输。 同时，AGC电路感测输入光电二极管处的输入光功率电平。 将输入光功率电平与参考电压进行比较，从而提供差分电压。 差分电压被施加到输入和输出放大器级，用于校正电信号以确保恒定的输出功率电平。

公开(公告)号：US20050231288A1

公开(公告)日：2005-10-20

申请号：US10826737

申请日：2004-04-16

申请人： Robert Riggsby ,  Walid Kamali

发明人： Robert Riggsby ,  Walid Kamali

IPC分类号： H04B3/14 ,  H03F3/191

CPC分类号： H04B3/144

摘要： A device includes a differential equalizer that is suitable for use between an amplification chain. Additionally, the differential equalizer is suitable for use coupled before or after an amplification chain in a transmitter or a receiver. The device comprises a differential equalizer for equalizing an input signal. The differential equalizer can be packaged into an integrated circuit for greater performance figures.

摘要翻译： 一种装置包括适于在放大链之间使用的差分均衡器。 此外，差分均衡器适用于在发射机或接收机中的放大链之前或之后使用。 该装置包括用于均衡输入信号的差分均衡器。 差分均衡器可以封装成集成电路，以获得更好的性能数据。

公开(公告)号：US20050232346A1

公开(公告)日：2005-10-20

申请号：US10825994

申请日：2004-04-16

申请人： Robert Riggsby ,  Walid Kamali

发明人： Robert Riggsby ,  Walid Kamali

IPC分类号： H03F1/32 ,  H03H7/06 ,  H04B1/10

CPC分类号： H03F1/32

摘要： A device includes an equalizer and an amplification chain in a transmitter or a receiver. The device comprises an equalizer for equalizing an input signal. The equalizer is positioned between two amplifier stages, which amplify the signal. The positioning of the equalizer greatly improves the noise figure and the distortion figures on the output signal. The device can be packaged into an integrated circuit for greater performance figures.

摘要翻译： 一种装置在发射机或接收机中包括均衡器和放大链。 该装置包括用于均衡输入信号的均衡器。 均衡器位于放大信号的两个放大器级之间。 均衡器的定位大大提高了噪声系数和输出信号的失真度。 该器件可以封装成集成电路，以获得更高的性能数字。