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1. 发明授权

US07764127B2 High resolution digitally controlled oscillator 有权
标题翻译：高分辨率数字控制振荡器
公开(公告)号：US07764127B2
公开(公告)日：2010-07-27
申请号：US11565523
申请日：2006-11-30
申请人： Bo Sun , Arun Jayaraman , Gary John Ballantyne , Gurkanwal S Sahota
发明人： Bo Sun , Arun Jayaraman , Gary John Ballantyne , Gurkanwal S Sahota
IPC分类号： H03B5/12
CPC分类号： H03L7/10 , H03B5/1215 , H03B5/1228 , H03B5/1265 , H03L7/099
摘要： This disclosure describes designs for a digitally controlled oscillator (DCO). The DCO can overcome many of the shortcomings associated with conventional voltage controlled oscillators (VCOs), and may improve wireless communication devices. The described DCO may improve the frequency synthesis process, reduce noise in a wireless communication device, and allow for simplification of various components of the device.
摘要翻译：本公开描述了数字控制振荡器（DCO）的设计。 DCO可以克服与常规压控振荡器（VCO）相关的许多缺点，并且可以改进无线通信设备。所描述的DCO可以改善频率合成过程，减少无线通信设备中的噪声，并且允许简化设备的各种组件。

2. 发明授权

US08411788B2 Digital transmitters for wireless communication 有权
标题翻译：用于无线通信的数字发射机
公开(公告)号：US08411788B2
公开(公告)日：2013-04-02
申请号：US11561262
申请日：2006-11-17
申请人： Gurkanwal S Sahota
发明人： Gurkanwal S Sahota
IPC分类号： H04L27/00
CPC分类号： H04L27/361 , H03C5/00 , H03D13/00 , H03F1/0205 , H03F3/217 , H03F3/245 , H03F2200/321 , H03F2200/331 , H03F2200/336 , H03F2200/451 , H03F2200/456
摘要： Digital transmitters having improved characteristics are described. In one design of a digital transmitter, a first circuit block receives inphase and quadrature signals, performs conversion from Cartesian to polar coordinates, and generates magnitude and phase signals. A second circuit block (which may include a delta-sigma modulator or a digital filter) generates an envelope signal based on the magnitude signal. A third circuit block generates a phase modulated signal based on the phase signal. The third circuit block may include a phase modulating phase locked loop (PLL), a voltage controlled oscillator (VCO), a saturating buffer, and so on. A fourth circuit block (which may include one or more exclusive-OR gates or an amplifier with multiple gain states) generates a digitally modulated signal based on the envelope signal and the phase modulated signal. A fifth circuit block (which may include a class D amplifier and/or a power amplifier) amplifies the digitally modulated signal and generates an RF output signal.
摘要翻译：描述了具有改进特性的数字发射机。在数字发射机的一种设计中，第一电路块接收同相和正交信号，执行从笛卡尔坐标转换为极坐标，并产生幅度和相位信号。第二电路块（其可以包括Δ-Σ调制器或数字滤波器）基于幅度信号产生包络信号。第三电路块基于相位信号产生相位调制信号。第三电路块可以包括相位调制锁相环（PLL），压控振荡器（VCO），饱和缓冲器等。第四电路块（其可以包括一个或多个异或门或具有多个增益状态的放大器）基于包络信号和相位调制信号产生数字调制信号。第五电路块（其可以包括D类放大器和/或功率放大器）放大数字调制信号并产生RF输出信号。

3. 发明授权

US09450665B2 Diversity receiver for wireless communication 有权
标题翻译：用于无线通信的分集接收机
公开(公告)号：US09450665B2
公开(公告)日：2016-09-20
申请号：US11548596
申请日：2006-10-11
申请人： Wesley Alan Sampson , Aristotele Hadjichristos , Gurkanwal S Sahota
发明人： Wesley Alan Sampson , Aristotele Hadjichristos , Gurkanwal S Sahota
IPC分类号： H04B7/10 , H04B7/08 , H04W88/06
CPC分类号： H04B7/0822 , H04B1/006 , H04B7/0825 , H04B7/0831 , H04B7/0871 , H04W88/06
摘要： A diversity receiver capable of receiving a CDMA system (e.g., a W-CDMA system) and a TDMA system (e.g., a GSM system), with receive diversity for at least one system, is described. W-CDMA is often referred to as UMTS. In one design, the diversity receiver includes a first receiver for GSM and a second receiver for UMTS. The first receiver may be implemented with one receiver design, may be spec-compliant for GSM, and may also support UMTS. The second receiver may be implemented with another receiver design, may be spec-compliant for UMTS, and may also support GSM. The first receiver may include a lowpass filter having a bandwidth that is adjustable for GSM and UMTS. The second receiver may include a bandpass filter used to attenuate a transmit frequency range for UMTS. Each receiver may include circuit blocks that are used for both GSM and UMTS.
摘要翻译：描述了能够接收具有用于至少一个系统的接收分集的CDMA系统（例如，W-CDMA系统）和TDMA系统（例如，GSM系统）的分集接收机。 W-CDMA通常被称为UMTS。在一种设计中，分集接收机包括用于GSM的第一接收机和用于UMTS的第二接收机。第一接收机可以用一个接收机设计来实现，可以对GSM进行规范兼容，并且还可以支持UMTS。第二接收机可以用另一个接收机设计来实现，可以对UMTS进行规范兼容，并且还可以支持GSM。第一接收机可以包括具有可针对GSM和UMTS调整的带宽的低通滤波器。第二接收机可以包括用于衰减UMTS的发射频率范围的带通滤波器。每个接收机可以包括用于GSM和UMTS的电路块。

4. 发明授权

US08971830B2 Multi-mode multi-band power amplifier module 有权
标题翻译：多模式多频段功率放大器模块
公开(公告)号：US08971830B2
公开(公告)日：2015-03-03
申请号：US12575414
申请日：2009-10-07
申请人： Aristotle Hadjichristos , Puay Hoe See , Babak Nejati , Guy Klemens , Norman L Frederick, Jr. , Gurkanwal S Sahota , Marco Cassia , Nathan M Pletcher , Yu Zhao , Thomas A Myers
发明人： Aristotle Hadjichristos , Puay Hoe See , Babak Nejati , Guy Klemens , Norman L Frederick, Jr. , Gurkanwal S Sahota , Marco Cassia , Nathan M Pletcher , Yu Zhao , Thomas A Myers
IPC分类号： H01Q11/12 , H04B1/04 , H03F1/02 , H03F3/24 , H03F3/72
CPC分类号： H04B1/0458 , H03F1/0277 , H03F3/24 , H03F3/72 , H03F2203/7236 , H04B1/0483
摘要： A multi-mode multi-band power amplifier (PA) module is described. In an exemplary design, the PA module includes multiple power amplifiers, multiple matching circuits, and a set of switches. Each power amplifier provides power amplification for its input signal when selected. Each matching circuit provides impedance matching and filtering for its power amplifier and provides a respective output signal. The switches configure the power amplifiers to support multiple modes, with each mode being for a particular radio technology. Each power amplifier supports at least two modes. The PA module may further include a driver amplifier and an additional matching circuit. The driver amplifier amplifies an input signal and provides an amplified signal to the power amplifiers. The additional matching circuit combines the outputs of other matching circuits and provides an output signal with higher output power. The driver amplifier and the power amplifiers can support multiple output power levels.
摘要翻译：描述了多模式多频带功率放大器（PA）模块。在示例性设计中，PA模块包括多个功率放大器，多个匹配电路和一组开关。每个功率放大器在选择时为其输入信号提供功率放大。每个匹配电路为其功率放大器提供阻抗匹配和滤波，并提供相应的输出信号。这些开关配置功率放大器以支持多种模式，每种模式都适用于特定的无线电技术。每个功率放大器至少支持两种模式。 PA模块还可以包括驱动器放大器和附加匹配电路。驱动器放大器放大输入信号并向功率放大器提供放大的信号。附加匹配电路组合其他匹配电路的输出，并提供具有较高输出功率的输出信号。驱动器放大器和功率放大器可以支持多个输出功率电平。

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