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21.发明授权System for closed loop power control using a linear or a non-linear power amplifier 有权使用线性或非线性功率放大器进行闭环功率控制的系统公开(公告)号：US06670849B1
公开(公告)日：2003-12-30
申请号：US09650987
申请日：2000-08-30
IPC分类号： H03G320
CPC分类号： H03G3/3042 , H03F1/02 , H03F2200/294 , H03F2200/372 , H04W52/52
摘要： A system for a closed power control feedback loop allows for the use of a non-linear amplifier for amplifying a phase modulated (PM) signal while introducing an inverse version of the desired amplitude modulated (AM) signal into the feedback loop using a variable gain element. By introducing an inverse version of the desired AM portion of the signal into the power control feedback loop, the non-linear, and highly efficient, power amplifier may be used to amplify only the PM portion of the signal, while the AM portion is introduced by the power control feedback loop. In another aspect of the invention, an inverse version of the AM portion of the desired transmit signal is introduced into the power control feedback loop of an amplifier that is amplifying both a phase modulated signal and an amplitude modulated signal. By introducing an inverse version of the desired AM signal into the power control feedback loop, the power control feedback loop may not cancel the AM component present at the output of the power amplifier. In yet another aspect of the invention, the desired AM signal is injected into the feedback loop along with the power control reference signal.
摘要翻译： 用于闭合功率控制反馈回路的系统允许使用非线性放大器来放大相位调制（PM）信号，同时使用可变增益将所需幅度调制（AM）信号的逆版本引入反馈环路 元件。 通过将信号的期望的AM部分的逆版本引入功率控制反馈回路中，可以使用非线性和高效的功率放大器来仅放大信号的PM部分，同时引入AM部分 通过功率控制反馈回路。 在本发明的另一方面，将期望的发送信号的AM部分的逆版本引入放大器的功率控制反馈环路，该放大器正在放大相位调制信号和幅度调制信号。 通过将所需AM信号的逆版本引入功率控制反馈回路中，功率控制反馈回路可能不会消除存在于功率放大器输出端的AM分量。 在本发明的另一方面，所需的AM信号与功率控制参考信号一起被注入到反馈回路中。
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22.发明授权Apparatus for and method of improving efficiency of transceivers in radio products 失效无线电产品收发器效率提高的方法及方法公开(公告)号：US06405054B1
公开(公告)日：2002-06-11
申请号：US09672235
申请日：2000-09-27
IPC分类号： H04B700
CPC分类号： H03F3/24 , H03F1/0211 , H04B1/40
摘要： A system and method for minimizing power dissipation in a battery-operated mobile unit by adaptively controlling a voltage converter to provide a variable power supply voltage to a transmitter. In the preferred embodiment, the voltage converter is coupled to receive a source voltage from a battery, and is coupled to provide operating power to the transmitter or the power amplifier. The voltage converter is also coupled to receive a control signal from a controller, which adaptively activates the voltage converter to transform the source voltage to a converted voltage, or deactivates the voltage converter so as to directly apply the source voltage to the transmitter. Power dissipation is therefore minimized when conversion functions of the voltage converter are deactivated when voltage conversion is unnecessary.
摘要翻译： 一种用于通过自适应地控制电压转换器以向发射机提供可变电源电压来最小化电池供电的移动单元中的功率耗散的系统和方法。 在优选实施例中，电压转换器被耦合以从电池接收源电压，并被耦合以向发射器或功率放大器提供工作电力。 电压转换器还被耦合以从控制器接收控制信号，该控制信号自适应地激活电压转换器以将源电压转换成转换的电压，或者使电压转换器去激活，以便直接将源电压施加到发射器。 因此，当不需要电压转换时，电压转换器的转换功能被取消时，因此功耗最小化。
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23.发明授权Method and apparatus for improving the sensitivity of an RF receiver at certain frequencies 失效用于提高RF接收机在某些频率下的灵敏度的方法和装置公开(公告)号：US06192228B1
公开(公告)日：2001-02-20
申请号：US09153008
申请日：1998-09-11
IPC分类号： H04Q732
CPC分类号： H04B1/1027 , H04B15/04 , H04B2215/064 , H04B2215/065
摘要： A method and apparatus for improving the sensitivity of a radio frequency (RF) receiver at certain frequencies suffering from co-channel interference. In the preferred embodiment, when a reference frequency, FREF, generates significant harmonics for a received RF signal in a selected channel, the reference frequency is varied or offset by a small amount, &Dgr;F. The harmonics of the offset reference frequency, F′REF=FREF±&Dgr;F, are thereby shifted away from the frequency of the received RF signal, thus reducing co-channel interference. The offset amount &Dgr;F is chosen such that the same injection frequency synthesized from FREF can still be synthesized from FREF±&Dgr;F by shifting N by an integer amount, preferably to N+1 or N−1. However, the invention encompasses shifting N by other integer amounts.
摘要翻译： 一种在同频干扰的某些频率下改善射频（RF）接收机的灵敏度的方法和装置。 在优选实施例中，当参考频率FREF在所选择的信道中产生接收的RF信号的显着谐波时，参考频率被改变或偏移少量DELTAF。 因此，偏移参考频率F'REF = FREF±DELTAF的谐波从接收的RF信号的频率偏移，从而减少同信道干扰。 选择偏移量DELTAF，使得从FREF合成的相同注入频率仍然可以通过将N移位整数，优选为N + 1或N-1，从FREF±DELTAF合成。 然而，本发明包括将N移位其他整数。
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公开(公告)号：US6163706A
公开(公告)日：2000-12-19
申请号：US972311
申请日：1997-11-18
CPC分类号： H03F3/24 , H03F1/0211 , H04B1/40
摘要： A system and method for minimizing power dissipation in a battery-operated mobile unit by adaptively controlling a voltage converter to provide a variable power supply voltage to a transmitter. In the preferred embodiment, the voltage converter is coupled to receive a source voltage from a battery, and is coupled to provide operating power to the transmitter or the power amplifier. The voltage converter is also coupled to receive a control signal from a controller, which adaptively activates the voltage converter to transform the source voltage to a converted voltage, or deactivates the voltage converter so as to directly apply the source voltage to the transmitter. Power dissipation is therefore minimized when conversion functions of the voltage converter are deactivated when voltage conversion is unnecessary.
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公开(公告)号：US08823459B2
公开(公告)日：2014-09-02
申请号：US13427616
申请日：2012-03-22
CPC分类号： H03H11/24 , H02M3/07 , H03B5/1212 , H03B5/1228 , H03B5/1265 , H03B5/24 , H03B29/00 , H03F3/19 , H03F3/21 , H03F2200/451 , H03K3/012 , H03K3/013 , H04B1/0475 , H04L25/08 , H04W28/14
摘要： Apparatus and methods for distributing spurious tones through the frequency domain are disclosed. One such apparatus can include a dithering circuit configured to generate a sequence of numbers that exhibit statistical randomness and a variable frequency circuit configured to adjust a frequency of an output based on the sequence of numbers so as to spread energy of spurious tones in a frequency response of the output to lower a noise floor. In one example, spurious tones can be reduced in a negative voltage generator of a radio frequency (RF) attenuator.
摘要翻译： 公开了通过频域分配杂音的装置和方法。 一种这样的装置可以包括抖动电路，其被配置为产生呈现统计随机性的数字序列，以及可变频率电路，其被配置为基于数字序列来调整输出的频率，以便在频率响应中扩散杂音的能量 的输出以降低本底噪声。 在一个示例中，在射频（RF）衰减器的负电压发生器中可以减少寄生音。
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26.发明申请CIRCUIT, CONTROLLER AND METHODS FOR DYNAMIC ESTIMATION AND CANCELLATION OF PHASE AND GAIN IMBALANCES IN QUARDRATURE SIGNAL PATHS OF A RECEIVER 有权电路，控制器和方法，用于动态估计和消除接收机的信号信号中的相位和增益不平衡公开(公告)号：US20120183106A1
公开(公告)日：2012-07-19
申请号：US13427549
申请日：2012-03-22
IPC分类号： H04B1/10
CPC分类号： H03D3/009 , H04L27/3863
摘要： A controller and a circuit work together to enable a selective and dynamic adjustment to correct phase and gain imbalances in quadrature signal paths of a receiver. Under select conditions, it has been determined that statistical estimates of gain and phase imbalance can be applied to adjust signals in the quadrature signal paths of a receiver. The controller validates the select conditions before updating the estimate of the gain imbalance and the estimate of the phase imbalance. The controller directs a compensator under select operating conditions such that validated dynamic estimates of the gain and phase imbalance or calibration data is applied to the quadrature signal paths. The controller disables the compensator and enables an estimator and a calculator when estimates are unavailable for the present operating conditions.
摘要翻译： 控制器和电路一起工作以实现选择性和动态调整以校正接收器的正交信号路径中的相位和增益不平衡。 在选择条件下，已经确定可以应用增益和相位不平衡的统计估计来调整接收机的正交信号路径中的信号。 控制器在更新增益不平衡的估计值和相位不平衡的估计值之前验证选择条件。 控制器在选择的操作条件下引导补偿器，使得增益和相位不平衡或校准数据的有效动态估计被应用于正交信号路径。 控制器禁用补偿器，并且当估计不能用于当前操作条件时，启用估计器和计算器。
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公开(公告)号：US07647028B2
公开(公告)日：2010-01-12
申请号：US11100172
申请日：2005-04-06
IPC分类号： H04B1/04
CPC分类号： H01Q3/267 , H04B17/101 , H04B17/14 , H04B17/21
摘要： An internal calibration system for a radio frequency (RF) transmitter comprises a digital processing element to generate within a radio frequency (RF) transmitter test points at which an output of the RF transmitter is measured, an RF detector to measure the radio frequency output of the RF transmitter at the test points, the digital processing element also determining transmitter impairments by analyzing the measured radio frequency output, and compensation circuitry to compensate the RF transmitter for the measured impairments.
摘要翻译： 用于射频（RF）发射机的内部校准系统包括数字处理元件，用于在射频（RF）发射机内测量RF发射器的输出的测试点产生RF测量点，RF检测器测量射频 在测试点处的RF发射机，数字处理元件还通过分析测量的射频输出来确定发射机损伤，以及补偿电路来补偿RF发射机的测量损伤。
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28.发明授权Radio frequency (RF) receiver with double loop integrated fast response automatic gain control (AGC) 失效具有双回路集成快速响应自动增益控制（AGC）的射频（RF）接收机公开(公告)号：US07593484B2
公开(公告)日：2009-09-22
申请号：US11241428
申请日：2005-09-30
CPC分类号： H04L27/3809
摘要： A radio frequency (RF) receiver device comprises a receiver system that receives an analog radio frequency signal and downconverts the analog radio frequency signal to a downconverted analog signal, the receiver system further including a peak signal detector configured to determine a peak signal level of the downconverted analog signal, and an automatic gain control adjustment element configured to determine whether the peak signal level falls within a predetermined range, and configured to generate, in the RF receiver, a gain control signal controlling the gain of at least one analog component based on whether the peak signal level falls within the predetermined range.
摘要翻译： 射频（RF）接收机设备包括接收模拟射频信号并将模拟射频信号下变频为下变频模拟信号的接收机系统，所述接收机系统还包括峰值信号检测器，该峰值信号检测器被配置为确定 以及自动增益控制调整元件，被配置为确定峰值信号电平是否落在预定范围内，并且被配置为在RF接收器中产生控制至少一个模拟分量的增益的增益控制信号，该增益控制信号基于 峰值信号电平是否落在预定范围内。
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29.发明授权公开(公告)号：US07548737B2
公开(公告)日：2009-06-16
申请号：US11219483
申请日：2005-09-02
IPC分类号： H04B1/18
CPC分类号： H03C3/0966 , H03C3/0941 , H03C3/0958 , H03D3/007 , H04B1/30 , H04B1/408 , H04L27/20
摘要： A system for transmitting and receiving data is provided. The system includes a direct-conversion receiver that receives a signal modulated on a carrier frequency signal. The direct-conversion receiver includes one or more subharmonic local oscillator mixers. A local oscillator is connected to the direct conversion receiver, and generates a signal having a frequency equal to a subharmonic of the carrier frequency signal. A transmitter is connected to the local oscillator, which uses the local oscillator signal to transmit outgoing data.
摘要翻译： 提供了一种用于发送和接收数据的系统。 该系统包括接收在载波频率信号上调制的信号的直接转换接收机。 直接转换接收器包括一个或多个次谐波本地振荡器混频器。 本地振荡器连接到直接转换接收器，并且产生具有等于载波频率信号的次谐波的频率的信号。 发送器连接到本地振荡器，其使用本地振荡器信号来发送输出数据。
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公开(公告)号：US07376116B2
公开(公告)日：2008-05-20
申请号：US10357125
申请日：2003-02-03
IPC分类号： H04B7/216
CPC分类号： H04B1/006 , H04B1/0003 , H04B1/0028 , H04B1/0032 , H04B1/406 , H04W88/06
摘要： A software defined transmit architecture includes a plurality of individually selectable components that can be selectively enabled to transmit a data signal that complies with any of a plurality of transmission standards. The software defined transmit architecture comprises components that can be enabled by associated logic to transmit, for example, communications signals that comply with the global system for mobile communications (GSM), enhanced data rates for GSM evolution (EDGE), which employs TDMA, and wide band code division multiple access (WCDMA) transmission standards. A single transmit architecture supports multiple transmission standards, thus minimizing the number of components in a multi-band, multi-mode portable transceiver, while reducing the number of active components.
摘要翻译： 软件定义的发射架构包括多个可单独选择的组件，其可以被选择性地启用以发送符合多个传输标准中的任何一个的数据信号。 软件定义的发射架构包括可由相关逻辑启用的组件，例如，发送符合全球移动通信系统（GSM）的通信信号，采用TDMA的GSM演进增强数据速率（EDGE），以及 宽带码分多址（WCDMA）传输标准。 单个传输架构支持多种传输标准，从而最大限度地减少多频带多模式便携式收发器中的组件数量，同时减少有源组件的数量。
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