-
1.发明授权Wireless communication unit, linearised transmitter circuit and method of linearising therein 有权无线通信单元，线性化发射机电路及其线性化方法公开(公告)号：US08175553B2
公开(公告)日：2012-05-08
申请号：US11623848
申请日：2007-01-17
申请人： Moshe Ben-Ayun , Paul H. Gailus , Ovadia Grossman , Mark Rozental
发明人： Moshe Ben-Ayun , Paul H. Gailus , Ovadia Grossman , Mark Rozental
IPC分类号： H01Q11/12
CPC分类号： H04B1/0475
摘要： A wireless communication unit includes a linearised transmitter having a forward path and a feedback path, respectively comprising at least one up-mixer and down-mixer, and forming two loops in quadrature. A phase training signal is applied to the at least one down-mixer in the feedback path in an open loop mode of operation to identify a loop phase adjustment to be applied. At least one of the two loops is switched to a closed loop mode of operation and the loop phase adjustment is applied to at least one up-mixer located in the forward path.
摘要翻译： 无线通信单元包括具有前向路径和反馈路径的线性化发射机，分别包括至少一个上混频器和下混频器，并且形成正交的两个回路。 相位训练信号以开环操作模式施加到反馈路径中的至少一个下混频器，以识别要施加的环路相位调整。 两个循环中的至少一个被切换到闭环操作模式，并且循环相位调整被施加到位于前向路径中的至少一个上混频器。
-
2.发明授权System and method for performing baseband phase shifting in a Cartesian feedback system 有权在笛卡尔反馈系统中执行基带相移的系统和方法公开(公告)号：US07787565B2
公开(公告)日：2010-08-31
申请号：US11743746
申请日：2007-05-03
CPC分类号： H04L27/364 , H04L2027/0018
摘要： A system and method for performing baseband phase shifting in a Cartesian feedback system includes a forward path for receiving an input baseband signal having two components, and performing up-conversion to output a RF signal; a power amplifier for amplifying the RF signal output from the forward path; and a feedback path for down-converting at least a sample of the output from the power amplifier to a feedback baseband signal comprising two components, and providing the feedback baseband signal to the forward path in order to be summed with the input baseband signal at a summing junction and before the loop filter. The forward path includes a baseband phase shifter for adjusting the baseband signal output from the summing junction in order to compensate for any phase shifts induced in the system.
摘要翻译： 用于在笛卡尔反馈系统中执行基带相移的系统和方法包括用于接收具有两个分量的输入基带信号的前向路径，并执行上变频以输出RF信号; 用于放大从前向路径输出的RF信号的功率放大器; 以及反馈路径，用于将来自功率放大器的输出的至少一个采样的至少一个样本降级为包括两个分量的反馈基带信号，并将反馈基带信号提供给前向路径，以便将其与输入基带信号相加 求和结点和环路滤波器之前。 正向路径包括基带移相器，用于调整从求和结点输出的基带信号，以便补偿系统中引起的任何相移。
-
公开(公告)号：US20090081984A1
公开(公告)日：2009-03-26
申请号：US11860636
申请日：2007-09-25
申请人： PAUL H. GAILUS , JOHN J. BOZEKI , JOSEPH A. CHARASKA , VADIM DUBOV , MANUEL P. GABATO, JR. , ARMANDO J. GONZALEZ
发明人： PAUL H. GAILUS , JOHN J. BOZEKI , JOSEPH A. CHARASKA , VADIM DUBOV , MANUEL P. GABATO, JR. , ARMANDO J. GONZALEZ
CPC分类号： H03L7/1974
摘要： A frequency synthesizer includes: a frequency source generating a reference signal that includes a plurality of pulses having periodicity based on a reference frequency; a feedback loop that includes, a phase detector circuit, a loop filter, a controlled oscillator that generates an output signal at an output, and a loop divide circuit; a non-linear circuit element at an input of the phase detector circuit, which generates intermodulation distortion that causes at least one spurious signal at the output; and a controller controlling the loop divide circuit and the non-linear circuit element. The frequency synthesizer further includes a dither circuit that adjusts the timing of some of the pulses of the reference signal based on a parameter provided by the controller to the non-linear circuit element, thereby, providing a jittered reference signal to the non-linear circuit element for attenuating the at least one spurious signal at the output.
摘要翻译： 频率合成器包括：频率源，产生包括基于参考频率具有周期性的多个脉冲的参考信号; 反馈回路，包括相位检测器电路，环路滤波器，在输出端产生输出信号的受控振荡器和环路除法电路; 在相位检测器电路的输入处的非线性电路元件，其产生在输出端引起至少一个杂散信号的互调失真; 以及控制环路分割电路和非线性电路元件的控制器。 频率合成器还包括抖动电路，其基于由控制器向非线性电路元件提供的参数来调整参考信号的一些脉冲的定时，从而向非线性电路提供抖动参考信号 元件，用于衰减输出端的至少一个杂散信号。
-
4.发明申请SYSTEM AND METHOD FOR PERFORMING BASEBAND PHASE SHIFTING IN A CARTESIAN FEEDBACK SYSTEM 有权用于在卡特彼勒反馈系统中执行基带相移的系统和方法公开(公告)号：US20080273626A1
公开(公告)日：2008-11-06
申请号：US11743746
申请日：2007-05-03
IPC分类号： H04L25/49
CPC分类号： H04L27/364 , H04L2027/0018
摘要： A system and method for performing baseband phase shifting in a Cartesian feedback system includes a forward path for receiving an input baseband signal having two components, and performing up-conversion to output a RF signal; a power amplifier for amplifying the RF signal output from the forward path; and a feedback path for down-converting at least a sample of the output from the power amplifier to a feedback baseband signal comprising two components, and providing the feedback baseband signal to the forward path in order to be summed with the input baseband signal at a summing junction and before the loop filter. The forward path includes a baseband phase shifter for adjusting the baseband signal output from the summing junction in order to compensate for any phase shifts induced in the system.
摘要翻译： 用于在笛卡尔反馈系统中执行基带相移的系统和方法包括用于接收具有两个分量的输入基带信号的前向路径，并执行上变频以输出RF信号; 用于放大从前向路径输出的RF信号的功率放大器; 以及反馈路径，用于将来自功率放大器的输出的至少一个采样的样本下变频为包括两个分量的反馈基带信号，并将反馈基带信号提供给前向路径，以便将其与输入基带信号相加 求和结点和环路滤波器之前。 正向路径包括基带移相器，用于调整从求和结点输出的基带信号，以便补偿系统中引起的任何相移。
-
5.发明申请WIRELESS COMMUNICATION UNIT, LINEARISED TRANSMITTER CIRCUIT AND METHOD OF LINEARISING THEREIN 有权无线通信单元，线性发射机电路及其线性化方法公开(公告)号：US20080170637A1
公开(公告)日：2008-07-17
申请号：US11623842
申请日：2007-01-17
申请人： Moshe Ben-Ayun , Paul H. Gailus , Ovadia Grossman , Mark Rozental
发明人： Moshe Ben-Ayun , Paul H. Gailus , Ovadia Grossman , Mark Rozental
IPC分类号： H04L27/00
CPC分类号： H04L27/364 , H03F1/32 , H03F1/34 , H03F1/345 , H03F3/24 , H03F2200/336 , H03F2200/57 , H04B1/0475 , H04B2001/0433
摘要： A wireless communication unit includes a frequency generation circuit, and a linearised transmitter operably coupled to the frequency generation circuit and having a forward path for routing a signal to be transmitted; and a feedback path, operably coupled to a power amplifier and the forward path for feeding back a portion of the signal to be transmitted. The feedback path and forward path form two loops in quadrature. The frequency generation circuit includes independent phase shift elements arranged to independently phase shift the two loops in quadrature (‘I’ and ‘Q’).
摘要翻译： 无线通信单元包括频率产生电路和可操作地耦合到频率发生电路并且具有用于路由要发送的信号的前向路径的线性化发射机; 以及反馈路径，可操作地耦合到功率放大器和前向路径，用于反馈要发射的信号的一部分。 反馈路径和正向路径形成正交的两个回路。 频率发生电路包括独立的相移元件，其被布置为独立地相位移动正交（'I'和'Q'）中的两个回路。
-
公开(公告)号：US6147543A
公开(公告)日：2000-11-14
申请号：US589134
申请日：1996-01-19
申请人： Paul H. Gailus , Kevin J. McCallum
发明人： Paul H. Gailus , Kevin J. McCallum
CPC分类号： H03D7/165 , H03B21/00 , H04B1/04 , H04B2001/0491
摘要： An apparatus includes a current generator (101) having an output. A plurality of mixers (103, 105, and 107) is switchably coupled to the current generator output, such that a first average power output level is provided when a first mixer (103) of the plurality of mixers is engaged and a second average power output level is provided when a second mixer (105) of the plurality of mixers is engaged. The first average power output level and the second average power output level are different.
摘要翻译： 一种装置包括具有输出的电流发生器（101）。 多个混合器（103,105和107）可切换地耦合到电流发生器输出，使得当多个混合器的第一混频器（103）接合时提供第一平均功率输出电平，并且第二平均功率 当多个混合器的第二混合器（105）接合时，提供输出电平。 第一平均功率输出电平和第二平均功率输出电平不同。
-
公开(公告)号：US5542096A
公开(公告)日：1996-07-30
申请号：US379417
申请日：1995-01-27
CPC分类号： H03F1/3294 , H03F1/3247 , H03F1/345 , H03F2200/57 , H04B2001/0416 , H04B2001/0433
摘要： A transmitter that includes an amplifying element, an antenna, a gain stage, and a closed loop feedback may compensate for varying antenna loads without an isolator. This may be accomplished by determining the effects of the varying loading on overall loop gain. Knowing the effects, the transmitter adjusts the gain of the gain stage to maintain a constant overall loop gain, thus eliminating the need for an isolator.
-
公开(公告)号：US5066923A
公开(公告)日：1991-11-19
申请号：US606653
申请日：1990-10-31
CPC分类号： H04L27/368 , H03C3/08 , H03F1/3247 , H03F2200/57 , H04B2001/0433
摘要： A linear transmitter having both an open loop and a closed loop training mode capability functions to schedule and facilitate these training modes in a manner that reduces adjacent channel splatter. A training waveform can be utilized to enhance these operational objectives. Scheduling of the open loop and closed loop training modes can be ordered, in a TDM system, in a variety of ways.
摘要翻译： 具有开环和闭环训练模式能力的线性发射机用于以减少相邻频道飞溅的方式调度和促进这些训练模式。 可以使用训练波形来增强这些操作目标。 可以以多种方式在TDM系统中排序开环和闭环训练模式的调度。
-
9.发明授权
公开(公告)号：US4542352A
公开(公告)日：1985-09-17
申请号：US505568
申请日：1983-06-17
CPC分类号： H03B9/141 , H03C3/22 , H03B2200/007
摘要： A modulated elongate cavity oscillator with minimized modulation nonlinearities includes a first cavity having dimensions which determine the fundamental resonant frequency of the oscillator, a gain element disposed in said first cavity that provides amplification to sustain oscillation, and a varactor diode disposed in said first cavity for modulating the fundamental frequency. A first waveguide is coupled to the first cavity for absorbing modes higher than the mode of the fundamental frequency which have an electric field maxima concurrent with the longitudinal center line of the first cavity. A second waveguide is coupled to the first cavity for absorbing modes higher than the mode of fundamental frequency which have an electric field minima concurrent with the longitudinal center line of the first cavity, whereby the first and second waveguides provide effective attenuation of higher order modes such that modulation nonlinearities due to the existence of higher order modes are substantially eliminated.
摘要翻译： 具有最小调制非线性的调制细长腔振荡器包括具有确定振荡器的基本共振频率的尺寸的第一空腔，设置在所述第一腔中的增益元件，其提供放大以维持振荡，以及设置在所述第一腔中的变容二极管， 调制基频。 第一波导耦合到第一腔，用于吸收比基频的模式高的模式，其具有与第一腔的纵向中心线同时最大的电场。 第二波导耦合到第一腔，用于吸收高于基频模式的模式，其具有与第一腔的纵向中心线同时最小的电场，由此第一和第二波导提供有效衰减高阶模， 基本上消除了由于高阶模式的存在引起的调制非线性。
-
公开(公告)号：US08107901B2
公开(公告)日：2012-01-31
申请号：US09933364
申请日：2001-08-20
CPC分类号： H03F1/083
摘要： A feedback loop with an adjustable closed loop frequency response. The feedback loop contains adjustable pole (212, 213) and adjustable zero elements (220,221) for changing the pole and/or zero locations in the feedback loop's loop frequency response thereby changing the closed loop frequency response of the feedback loop. In one embodiment, the feedback loop is a Cartesian feedback loop suitable for use in a radio transmitter.
摘要翻译： 具有可调节闭环频率响应的反馈回路。 反馈环路包括可调节极点（212,213）和可调零元件（220,221），用于改变反馈回路环路频率响应中的极点和/或零点位置，从而改变反馈回路的闭环频率响应。 在一个实施例中，反馈回路是适用于无线电发射机的笛卡尔反馈回路。
-
-
-
-
-
-
-
-
-
搜索结果
55 条记录 (耗时 0.019 秒)
