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    • 2. 发明申请
    • Systems and Methods for Providing Modulation of Switchmode RF Power Amplifiers
    • 提供开关模式RF功率放大器调制的系统和方法
    • US20120139706A1
    • 2012-06-07
    • US12961089
    • 2010-12-06
    • Regis J. Nero, JR.Jeffrey A. Gibala
    • Regis J. Nero, JR.Jeffrey A. Gibala
    • G06K7/01H02M7/537G05F3/02
    • H03F1/0227H02M2001/0045H03C1/02H03F1/02H03F3/19H03F3/217H03F3/2176H03F3/245H03F2200/324H03F2200/451
    • Systems and methods are provided for generating an amplitude modulation signal to a switchmode power amplifier. A DC to DC switch is configured to receive a DC input voltage and to provide a DC output voltage. A low dropout regulator is configured to provide the amplitude modulation signal according to a modulation control signal received by the low dropout regulator. A control circuit is configured to establish a nominal operating power level for the power amplifier via the amplitude modulation signal and to maintain a minimum voltage difference between the DC output voltage and the low dropout regulator output. A modulator control circuit is configured to provide the modulation control signal to the low dropout regulator. The modulator control circuit provides the transition from a high amplitude to a low amplitude and a transition from the low amplitude to the high amplitude at configurable first and second slopes, respectively.
    • 系统和方法被提供用于产生到开关模式功率放大器的幅度调制信号。 直流 - 直流开关配置为接收直流输入电压并提供直流输出电压。 低压差稳压器被配置为根据由低压差调节器接收的调制控制信号来提供幅度调制信号。 控制电路被配置为通过幅度调制信号建立功率放大器的额定工作功率电平,并且保持DC输出电压和低压差稳压器输出之间的最小电压差。 调制器控制电路被配置为向低压差调节器提供调制控制信号。 调制器控制电路分别提供从高幅度到低幅度的转变以及在可配置的第一和第二斜率处从低幅度到高幅度的转变。
    • 6. 发明授权
    • Systems and methods for providing modulation of switchmode RF power amplifiers
    • 提供开关模式RF功率放大器调制的系统和方法
    • US09041479B2
    • 2015-05-26
    • US12961089
    • 2010-12-06
    • Regis J. Nero, Jr.Jeffrey A. Gibala
    • Regis J. Nero, Jr.Jeffrey A. Gibala
    • H03C1/62H03F3/24H03F1/02H02M1/00
    • H03F1/0227H02M2001/0045H03C1/02H03F1/02H03F3/19H03F3/217H03F3/2176H03F3/245H03F2200/324H03F2200/451
    • Systems and methods are provided for generating an amplitude modulation signal to a switchmode power amplifier. A DC to DC switch is configured to receive a DC input voltage and to provide a DC output voltage. A low dropout regulator is configured to provide the amplitude modulation signal according to a modulation control signal received by the low dropout regulator. A control circuit is configured to establish a nominal operating power level for the power amplifier via the amplitude modulation signal and to maintain a minimum voltage difference between the DC output voltage and the low dropout regulator output. A modulator control circuit is configured to provide the modulation control signal to the low dropout regulator. The modulator control circuit provides the transition from a high amplitude to a low amplitude and a transition from the low amplitude to the high amplitude at configurable first and second slopes, respectively.
    • 系统和方法被提供用于产生到开关模式功率放大器的幅度调制信号。 直流 - 直流开关配置为接收直流输入电压并提供直流输出电压。 低压差稳压器被配置为根据由低压差调节器接收的调制控制信号来提供幅度调制信号。 控制电路被配置为经由幅度调制信号建立功率放大器的额定工作功率电平,并且保持DC输出电压和低压差稳压器输出之间的最小电压差。 调制器控制电路被配置为向低压差调节器提供调制控制信号。 调制器控制电路分别提供从高幅度到低幅度的转变以及在可配置的第一和第二斜率处从低幅度到高幅度的转变。
    • 7. 发明授权
    • Frequency agile transponder
    • 频率敏捷转发器
    • US06433905B1
    • 2002-08-13
    • US09308356
    • 1999-05-18
    • James N. PriceJeffrey A. Gibala
    • James N. PriceJeffrey A. Gibala
    • H04B1000
    • H04B10/272
    • One or more pieces of equipment of a hybrid fiber-coaxial (HFC) network has a frequency agile transponder connected thereto. Each frequency agile transponder includes a transmitter (T) and a receiver (R) which are connectable to a coaxial line of the HFC network. Bidirectional communications can occur between a controller and each frequency agile transponder via the HFC network. The frequency agile transponder has analog inputs/outputs connectable to test points of the one or more pieces of equipment of the HFC network. The frequency agile transponder can test the test points and supply to the controller the results of the test. The transmit and receive center frequencies of the transmitter and receiver of the frequency agile transponder can be selectively and remotely adjusted by the controller to avoid signals at carrier frequencies utilized to transmit program material, data signals and/or telephony signals.
    • 混合光纤同轴(HFC)网络的一个或多个设备具有连接到其上的频率敏捷应答器。 每个频率敏捷转发器包括可连接到HFC网络的同轴线路的发射机(T)和接收机(R)。 通过HFC网络可以在控制器和每个频率敏捷转发器之间进行双向通信。 频率敏捷转发器具有可连接到HFC网络的一个或多个设备的测试点的模拟输入/输出。 频率敏捷转发器可以测试测试点,并向控制器提供测试结果。 频率敏捷转发器的发射机和接收机的发射和接收中心频率可以由控制器进行选择性和远程调整,以避免用于传输节目材料,数据信号和/或电话信号的载波频率的信号。