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Patent Agency Ranking
公开(公告)号：US20130285679A1
公开(公告)日：2013-10-31
申请号：US13929706
申请日：2013-06-27
Applicant: Broadcom Corporation
Inventor： Alireza Zolfaghari , Chin-Ming Chien , Bojko Marholev
CPC classification number: G01R27/2605 , G01R27/14 , G01R31/2882 , G01R31/2884
Abstract: According to one disclosed embodiment, an on-chip resistor calibration circuit includes an RC oscillator having a test resistor and a precision capacitor as elements, a counter, and a reference clock. In one embodiment, an RC oscillator generates a waveform having a period dependent upon the resistance of the test resistor and the capacitance of the precision capacitor. In such an embodiment, a counter and a reference clock may be configured to measure the period of the waveform. Using a pre-determined capacitance of the precision capacitor, a resistance of the test resistor may be determined. In another embodiment, an RC oscillator generates first and second waveforms through use of an additional capacitor that can be switched in and out of the RC oscillator circuit. Using a pre-determined capacitance of the precision capacitor, an RC product of the test resistor and the additional capacitor may be determined.
Abstract translation: 根据一个公开的实施例，片上电阻校准电路包括具有测试电阻器和精密电容器作为元件的RC振荡器，计数器和参考时钟。 在一个实施例中，RC振荡器产生具有取决于测试电阻器的电阻和精密电容器的电容的周期的波形。 在这种实施例中，计数器和参考时钟可被配置为测量波形的周期。 使用精密电容器的预定电容，可以确定测试电阻器的电阻。 在另一个实施例中，RC振荡器通过使用可以进入和离开RC振荡器电路的附加电容器产生第一和第二波形。 使用精密电容器的预定电容，可以确定测试电阻器的RC乘积和附加电容器。
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公开(公告)号：US20150092636A1
公开(公告)日：2015-04-02
申请号：US14069431
申请日：2013-11-01
Applicant: Broadcom Corporation
Inventor： Ahmadreza Rofougaran , Maryam Rofougaran , Alireza Zolfaghari
CPC classification number: H04B1/403 , H03J1/005 , H03L7/0802 , H03L7/0992 , H04L5/14
Abstract: A system and method in a transceiver for reducing power. In transmission mode (Tx), a local oscillator (LO) generator (LOGEN) circuit modifies a PLL oscillation signal that runs at a fraction of the carrier signal. In the receive mode (Rx), the LOGEN circuit increases power consumption unnecessarily and is bypassed in favor of a PLL output which is a multiple of the carrier signal.
Abstract translation: 用于减少功率的收发器中的系统和方法。 在传输模式（Tx）中，本地振荡器（LO）发生器（LOGEN）电路修改以一小部分载波信号运行的PLL振荡信号。 在接收模式（Rx）中，LOGEN电路不必要地增加功率消耗，并且绕过了作为载波信号的倍数的PLL输出。
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公开(公告)号：US20130252564A1
公开(公告)日：2013-09-26
申请号：US13898287
申请日：2013-05-20
Applicant: Broadcom Corporation
Inventor： Alireza Zolfaghari , Henrik Tholstrup Jensen , Hooman Darabi
IPC: H04B1/40
CPC classification number: H04B1/406 , H03F3/24 , H04B2001/0408 , H04L27/0008
Abstract: Various embodiments are disclosed relating to power control techniques for wireless transmitters. In an example embodiment, an apparatus is provided that may include a digital-to-analog converter (DAC) adapted to convert a digital amplitude signal to an analog amplitude signal during a first transmission mode and adapted to convert a digital power level signal to an analog power level signal during a second transmission mode.
Abstract translation: 公开了关于无线发射机的功率控制技术的各种实施例。 在一个示例性实施例中，提供了一种可以包括数模转换器（DAC）的装置，其适于在第一传输模式期间将数字幅度信号转换为模拟幅度信号，并且适于将数字功率电平信号转换为 在第二传输模式期间的模拟功率电平信号。
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公开(公告)号：US08885690B2
公开(公告)日：2014-11-11
申请号：US13898287
申请日：2013-05-20
Applicant: Broadcom Corporation
Inventor： Alireza Zolfaghari , Henrik Tholstrup Jensen , Hooman Darabi
CPC classification number: H04B1/406 , H03F3/24 , H04B2001/0408 , H04L27/0008
Abstract: Various embodiments are disclosed relating to power control techniques for wireless transmitters. In an example embodiment, an apparatus is provided that may include a digital-to-analog converter (DAC) adapted to convert a digital amplitude signal to an analog amplitude signal during a first transmission mode and adapted to convert a digital power level signal to an analog power level signal during a second transmission mode.
Abstract translation: 公开了关于无线发射机的功率控制技术的各种实施例。 在一个示例性实施例中，提供了一种可以包括数模转换器（DAC）的装置，其适于在第一传输模式期间将数字幅度信号转换为模拟幅度信号，并且适于将数字功率电平信号转换为 在第二传输模式期间的模拟功率电平信号。
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公开(公告)号：US09140739B2
公开(公告)日：2015-09-22
申请号：US13929706
申请日：2013-06-27
Applicant: Broadcom Corporation
Inventor： Alireza Zolfaghari , Chin-Ming Chien , Bojko Marholev
CPC classification number: G01R27/2605 , G01R27/14 , G01R31/2882 , G01R31/2884
Abstract: According to one disclosed embodiment, an on-chip resistor calibration circuit includes an RC oscillator having a test resistor and a precision capacitor as elements, a counter, and a reference clock. In one embodiment, an RC oscillator generates a waveform having a period dependent upon the resistance of the test resistor and the capacitance of the precision capacitor. In such an embodiment, a counter and a reference clock may be configured to measure the period of the waveform. Using a pre-determined capacitance of the precision capacitor, a resistance of the test resistor may be determined. In another embodiment, an RC oscillator generates first and second waveforms through use of an additional capacitor that can be switched in and out of the RC oscillator circuit. Using a pre-determined capacitance of the precision capacitor, an RC product of the test resistor and the additional capacitor may be determined.
Abstract translation: 根据一个公开的实施例，片上电阻校准电路包括具有测试电阻器和精密电容器作为元件的RC振荡器，计数器和参考时钟。 在一个实施例中，RC振荡器产生具有取决于测试电阻器的电阻和精密电容器的电容的周期的波形。 在这种实施例中，计数器和参考时钟可被配置为测量波形的周期。 使用精密电容器的预定电容，可以确定测试电阻器的电阻。 在另一个实施例中，RC振荡器通过使用可以进入和离开RC振荡器电路的附加电容器产生第一和第二波形。 使用精密电容器的预定电容，可以确定测试电阻器的RC乘积和附加电容器。
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