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61. 发明授权

US07944376B2 Technique for improving modulation performance of translational loop RF transmitters 有权
标题翻译：提高平移环路射频发射机调制性能的技术
公开(公告)号：US07944376B2
公开(公告)日：2011-05-17
申请号：US12533808
申请日：2009-07-31
申请人： Henrik T. Jensen
发明人： Henrik T. Jensen
IPC分类号： H03M7/00
CPC分类号： H04L27/368
摘要： A transmit signal generated by the baseband processor in a translational loop type RF transmitter is “pre-distorted” so as to counter act magnitude distortion and group delay variation imposed by a narrow PLL signal filter. The pre-distortion occurs in two steps: a magnitude equalizer in the baseband processor pre-distorts the amplitude of the transmit signal according to the inverse of the PLL signal filter magnitude response, and a group delay equalizer linearizes the phase response of the entire transmitter chain, i.e., pre-distorts the transmit signal such that the combined phase response of magnitude equalizer, group delay equalizer, and PLL signal filter is linear. With such pre-distortion, a loop filter is provided for with component values that define a relatively small bandwidth for the loop filter to filter spurious tones that result from an IF reference feedthrough to a voltage controlled oscillator of the translational loop.
摘要翻译：由平移环型RF发射机中的基带处理器产生的发送信号被“预失真”，以抵消由窄PLL信号滤波器施加的动作幅度失真和组延迟变化。预失真发生在两个步骤中：基带处理器中的幅度均衡器根据PLL信号滤波器幅度响应的倒数来预失真发射信号的幅度，并且组延迟均衡器将整个发射机的相位响应线性化链，即，预发射发射信号，使得幅度均衡器，组延迟均衡器和PLL信号滤波器的组合相位响应是线性的。通过这种预失真，提供了一个环路滤波器，用于为分频值定义一个相对较小的带宽，以将由IF参考馈通产生的杂散音调滤波到平移回路的压控振荡器。

62. 发明授权

US07893773B2 Phase locked loop modulator calibration techniques 有权
标题翻译：锁相环调制器校准技术
公开(公告)号：US07893773B2
公开(公告)日：2011-02-22
申请号：US12436033
申请日：2009-05-05
申请人： Henrik T. Jensen , Hea Joung Kim
发明人： Henrik T. Jensen , Hea Joung Kim
IPC分类号： H03L7/08 , H03L7/099
CPC分类号： H03C3/0991 , H03L7/0898
摘要： A method for calibrating a phase locked loop begins by determining a gain offset of a voltage controlled oscillator of the phase locked loop. The processing then continues by adjusting current of a charge pump of the phase locked loop based on the gain offset.
摘要翻译：通过确定锁相环的压控振荡器的增益偏移开始校准锁相环的方法。然后通过基于增益偏移来调节锁相环的电荷泵的电流来继续处理。

63. 发明授权

US07860188B2 Digital modulator for a GSM/GPRS/EDGE wireless polar RF transmitter 失效
标题翻译：用于GSM / GPRS / EDGE无线极性射频发射机的数字调制器
公开(公告)号：US07860188B2
公开(公告)日：2010-12-28
申请号：US12391630
申请日：2009-02-24
申请人： Henrik T. Jensen
发明人： Henrik T. Jensen
IPC分类号： H04L27/20
CPC分类号： H04L27/2003 , H04L27/2017
摘要： A digital modulator in a radio transmitter includes circuitry for switching between Gaussian Minimum Shift Keying (GMSK) and Phase-Shift Keying (PSK) while maintaining spectral mask requirements. The digital modulator of the present invention includes both GMSK and PSK symbol mappers that produce PSK in-phase and quadrature symbols and GMSK symbols, respectively, to a pulse shaping block. Based on opposite phases of a modulation control signal, the symbol mappers produce either modulated data or a steam of logic zeros to the pulse shaping block. The pulse shaping block filters the received data and multiplexes the data so that each modulated data stream receives non-zero data during a guard time to avoid abrupt changes in the modulated signal that would violate the spectral mask requirements.
摘要翻译：无线电发射机中的数字调制器包括用于在保持频谱掩模要求的同时在高斯最小移频键控（GMSK）和相移键控（PSK）之间切换的电路。本发明的数字调制器包括分别产生PSK同相和正交符号和GMSK符号的GMSK和PSK符号映射器到脉冲整形块。基于调制控制信号的相反相位，符号映射器产生调制数据或逻辑零的蒸汽到脉冲整形块。脉冲整形块对接收到的数据进行滤波并复用数据，使得每个调制数据流在保护时间期间接收非零数据，以避免将会违反频谱掩模要求的调制信号的突然变化。

64. 发明授权

US07764934B2 RF transceiver incorporating dual-use PLL frequency synthesizer 有权
标题翻译： RF收发器采用双用PLL频率合成器
公开(公告)号：US07764934B2
公开(公告)日：2010-07-27
申请号：US12541765
申请日：2009-08-14
申请人： Henrik T. Jensen
发明人： Henrik T. Jensen
IPC分类号： H04B1/02
CPC分类号： H03L7/18 , H03L7/0891 , H04B1/403
摘要： A frequency synthesizer for use in a transmitter operates to receive outbound transmit data and to modulate the outbound transmit data to produce a modulated RF signal. The modulated RF signal can then be amplified to produce an outbound RF signal.
摘要翻译：用于发射机的频率合成器用于接收出站发射数据并调制出站发射数据以产生经调制的RF信号。然后可以对经调制的RF信号进行放大以产生出站RF信号。

65. 发明授权

US07685217B2 Channel-select decimation filter with programmable bandwidth 失效
标题翻译：具有可编程带宽的通道选择抽取滤波器
公开(公告)号：US07685217B2
公开(公告)日：2010-03-23
申请号：US11189910
申请日：2005-07-26
申请人： Henrik T. Jensen , Brima B. Ibrahim
发明人： Henrik T. Jensen , Brima B. Ibrahim
IPC分类号： G06F17/10 , G06F17/17 , H03K9/00
CPC分类号： H04L27/38 , H03H17/0664 , H03H17/0671
摘要： A channel-select decimation filter capable of operating in multiple bandwidth modes includes a first low pass filter stage, a variable gain stage, a subtraction module a second low pass filter stage and a down-sampling module. The first low pass filter stage includes a first programmable delay module for filtering input signals to produce first low pass filtered signals. The variable gain stage applies a programmable gain to the input signals to produce gained input signals. The subtraction module subtracts the first low pass filtered signals from the gain input signals to produce first stage signals. The second low pass filter stage includes a second programmable delay module for filtering the first stage signals to produce channel-selected signals. The first programmable delay module, second programmable delay module and programmable gain are programmed to implement one of the multiple bandwidth modes.
摘要翻译：能够在多个带宽模式下工作的频道选择抽取滤波器包括第一低通滤波器级，可变增益级，减法模块，第二低通滤波级和下采样模块。第一低通滤波器级包括用于滤波输入信号以产生第一低通滤波信号的第一可编程延迟模块。可变增益级将可编程增益应用于输入信号以产生增益的输入信号。减法模块从增益输入信号中减去第一低通滤波信号，以产生第一级信号。第二低通滤波器级包括用于对第一级信号进行滤波以产生通道选择信号的第二可编程延迟模块。第一可编程延迟模块，第二可编程延迟模块和可编程增益被编程为实现多种带宽模式之一。

66. 发明授权

US07639992B2 Digital compensation for nonlinearities in a phase-locked loop of a polar transmitter 失效
标题翻译：极性发射机锁相环非线性的数字补偿
公开(公告)号：US07639992B2
公开(公告)日：2009-12-29
申请号：US11643166
申请日：2006-12-21
申请人： Henrik T. Jensen , Hooman Darabi , Alireza Zolfaghari
发明人： Henrik T. Jensen , Hooman Darabi , Alireza Zolfaghari
IPC分类号： H03C3/00
CPC分类号： H03C5/00 , H03C3/0925 , H03C3/0933 , H03C3/0991
摘要： A polar transmitter includes a digital processor for producing a phase correction signal and a complex modulated digital signal including a digital phase-modulated signal. The phase correction signal is added to the digital phase-modulated signal to produce a corrected digital phase signal. The corrected digital phase signal is input to a phase-locked loop (PLL) to produce an RF phase signal that tracks the phase of the digital phase-modulated signal based on the corrected digital phase signal.
摘要翻译：极性发射机包括用于产生相位校正信号的数字处理器和包括数字相位调制信号的复数调制数字信号。将相位校正信号加到数字相位调制信号上以产生校正的数字相位信号。校正的数字相位信号被输入到锁相环（PLL）以产生基于经校正的数字相位信号跟踪数字相位调制信号的相位的RF相位信号。

67. 发明申请

US20090278613A1 Two-point modulation polar transmitter architecture and method for performance enhancement 有权
标题翻译：两点调制极性发射机架构和方法进行性能提升
公开(公告)号：US20090278613A1
公开(公告)日：2009-11-12
申请号：US12506997
申请日：2009-07-21
申请人： Henrik T. Jensen , Brima B. Ibrahim
发明人： Henrik T. Jensen , Brima B. Ibrahim
IPC分类号： H03L7/00
CPC分类号： H03L7/1976 , H03C3/0925 , H03C3/0933 , H03C3/0941 , H03C3/095 , H03C3/0991 , H03L7/093
摘要： A polar transmitter includes a two-point modulation phase-locked loop (PLL) for producing an RF signal with a wide bandwidth. The PLL includes a first input for receiving a phase signal of a variable-envelope modulated signal and providing the phase signal along a first signal path to produce a first frequency modulation signal and a second input for receiving the phase signal and providing the phase signal along a second signal path to produce a second frequency modulation signal. The PLL further includes a voltage controlled oscillator (VCO) having two modulation points, one for receiving the first frequency modulation signal and the other for receiving the second frequency modulation signal. The VCO is controlled by an aggregate of the first frequency modulation signal and the second frequency modulation signal to up-convert the phase signal from an IF to an RF to produce the RF signal with a wide bandwidth.
摘要翻译：极性发射机包括用于产生宽带宽的RF信号的两点调制锁相环（PLL）。 PLL包括用于接收可变包络调制信号的相位信号并沿着第一信号路径提供相位信号以产生第一频率调制信号的第一输入端和用于接收相位信号并提供相位信号的第二输入端用于产生第二频率调制信号的第二信号路径。 PLL还包括具有两个调制点的压控振荡器（VCO），一个用于接收第一频率调制信号，另一个用于接收第二频率调制信号。 VCO由第一频率调制信号和第二频率调制信号的集合控制，以将来自IF的相位信号上变频到RF以产生具有宽带宽的RF信号。

68. 发明授权

US07580483B2 Trimming of local oscillation in an integrated circuit radio 失效
标题翻译：在集成电路收音机中修整本地振荡
公开(公告)号：US07580483B2
公开(公告)日：2009-08-25
申请号：US11516413
申请日：2006-09-05
申请人： Brima B. Ibrahim , Henrik T. Jensen
发明人： Brima B. Ibrahim , Henrik T. Jensen
IPC分类号： H04L27/14 , H04L27/16 , H04L27/22
CPC分类号： H04L25/061 , H04L25/063 , H04L27/0014 , H04L2027/003 , H04L2027/0053 , H04L2027/0065
摘要： A method and apparatus for trimming of a local oscillation within a radio frequency integrated circuit (RFIC) includes processing that begins when an RFIC receives a radio frequency (RF) signal having a known frequency. The processing then continues when the RFIC mixes the RF signal with a receiver local oscillation to produce a low intermediate frequency (IF) signal, which may have a carrier frequency of zero (i.e., a baseband signal) or up to a few mega Hertz). The processing then continues when the RFIC demodulates the low IF signal to produce demodulated data. The processing then continues as the RFIC determines a DC offset from the demodulated data, where the DC offset is reflective of the difference between the known frequency and the frequency of the receiver local oscillation. The processing then continues as the RFIC adjusts the receiver local oscillation to reduce the DC offset when the DC offset compares unfavorably with an allowable offset threshold.
摘要翻译：一种在射频集成电路（RFIC）内修整本地振荡的方法和装置包括当RFIC接收具有已知频率的射频（RF）信号时开始的处理。然后，当RFIC将RF信号与接收机本地振荡混合以产生可能具有零载波频率（即，基带信号）或高达几兆赫兹的低中频（IF）信号时，处理继续进行。。然后，当RFIC解调低IF信号以产生解调数据时，处理继续。然后，处理继续，因为RFIC从解调数据确定DC偏移，其中DC偏移反映了已知频率和接收机本地振荡的频率之间的差异。然后，随着RFIC调整接收机本地振荡，当DC偏移与允许的偏移阈值不利地相比较时，该处理继续减小直流偏移。

69. 发明授权

US07570187B2 Technique for improving modulation performance of translational loop RF transmitters 有权
标题翻译：提高平移环路射频发射机调制性能的技术
公开(公告)号：US07570187B2
公开(公告)日：2009-08-04
申请号：US11324362
申请日：2006-01-03
申请人： Henrik T. Jensen
发明人： Henrik T. Jensen
IPC分类号： H03M1/66
CPC分类号： H04L27/368
摘要： A transmit signal generated by the baseband processor in a translational loop type RF transmitter is “pre-distorted” so as to counter act magnitude distortion and group delay variation imposed by a narrow PLL signal filter. The pre-distortion occurs in two steps: a magnitude equalizer in the baseband processor pre-distorts the amplitude of the transmit signal according to the inverse of the PLL signal filter magnitude response, and a group delay equalizer linearizes the phase response of the entire transmitter chain, i.e., pre-distorts the transmit signal such that the combined phase response of magnitude equalizer, group delay equalizer, and PLL signal filter is linear. With such pre-distortion, a loop filter is provided for with component values that define a relatively small bandwidth for the loop filter to filter spurious tones that result from an IF reference feedthrough to a voltage controlled oscillator of the translational loop.
摘要翻译：由平移环型RF发射机中的基带处理器产生的发送信号被“预失真”，以抵消由窄PLL信号滤波器施加的动作幅度失真和组延迟变化。预失真发生在两个步骤中：基带处理器中的幅度均衡器根据PLL信号滤波器幅度响应的倒数来预失真发射信号的幅度，并且组延迟均衡器将整个发射机的相位响应线性化链，即，预发射发射信号，使得幅度均衡器，组延迟均衡器和PLL信号滤波器的组合相位响应是线性的。通过这种预失真，提供了一个环路滤波器，用于为分频值定义一个相对较小的带宽，以将由IF参考馈通产生的杂散音调滤波到平移回路的压控振荡器。

70. 发明申请

US20090168863A1 POLAR TRANSMITTER WITH DIGITAL AND ANALOG FILTERING OF ENVELOPE 失效
标题翻译：具有数字和模拟滤波的极性发射器
公开(公告)号：US20090168863A1
公开(公告)日：2009-07-02
申请号：US11968221
申请日：2008-01-02
申请人： Alireza Zolfaghari , Hooman Darabi , Henrik T. Jensen
发明人： Alireza Zolfaghari , Hooman Darabi , Henrik T. Jensen
IPC分类号： H04L27/01 , H04B15/00
CPC分类号： H04L27/361 , H03F1/3241 , H04B1/0483 , H04B2001/0425 , H04L25/03343
摘要： A calibration circuit measures the variation in a filter resistor within the analog domain of the envelope path of a polar transmitter and produces a digital value representative of that variation. A digital processor determines a digital control signal from the digital value that is used to compensate, in the digital domain of the envelope path, for the variation in the filter resistor in the analog domain.
摘要翻译：校准电路测量极性发射器的包络路径的模拟域内的滤波电阻的变化，并产生代表该变化的数字值。数字处理器根据数字值确定数字控制信号，该数字值用于在包络路径的数字域中补偿模拟域中的滤波电阻的变化。

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