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1. 发明授权

US5675287A Digital DC correction circuit for a linear transmitter 失效
标题翻译：用于线性变送器的数字直流校正电路
公开(公告)号：US5675287A
公开(公告)日：1997-10-07
申请号：US599769
申请日：1996-02-12
申请人： Michael H. Baker , Paul H. Gailus , William J. Turney , Lawrence F. Cygan
发明人： Michael H. Baker , Paul H. Gailus , William J. Turney , Lawrence F. Cygan
IPC分类号： H03F1/32 , H03F1/34 , H03G3/30
CPC分类号： H03G3/3047 , H03F1/3247 , H03F1/3282 , H03F1/345 , H03G3/3042
摘要： An amplifier structure (200) includes a main amplifier loop (203) for efficiently amplifying an input signal at a power amplifier (228) coupled to a load susceptible to impedance variations. The amplifier structure (200) includes a DC correction circuit (214) for detecting and correcting misadjustments in the amplifier (200) in order to eliminate DC offset associated therewith.
摘要翻译：放大器结构（200）包括主放大器环（203），用于有效地放大耦合到容易受阻抗变化的负载的功率放大器（228）的输入信号。放大器结构（200）包括用于检测和校正放大器（200）中的失调的DC校正电路（214），以便消除与其相关联的DC偏移。

2. 发明授权

US5574992A Method and apparatus for reducing off-channel interference produced by a linear transmitter 失效
标题翻译：用于减少由线性发射机产生的非信道干扰的方法和装置
公开(公告)号：US5574992A
公开(公告)日：1996-11-12
申请号：US235415
申请日：1994-04-29
申请人： Lawrence F. Cygan , Paul H. Gailus , William J. Turney , Michael H. Baker
发明人： Lawrence F. Cygan , Paul H. Gailus , William J. Turney , Michael H. Baker
IPC分类号： H03F1/32 , H04B1/04
CPC分类号： H03F1/34 , H03F1/3247 , H03F1/3294 , H04B1/0475 , H03F2200/57 , H04B2001/0433
摘要： A linear transmitter (100), which utilizes closed loop feedback to maintain its linearity, employs a method for reducing off-channel interference produced by the linear transmitter (100). A dynamically alterable parameter source (DAPS, 126) is provided to the linear transmitter (100). The DAPS (126) is then used to adjust at least one loop parameter of the closed loop feedback such that off-channel interference is reduced.
摘要翻译：使用闭环反馈来维持其线性度的线性发射机（100）采用减少线性发射机（100）产生的非信道干扰的方法。将动态可变参数源（DAPS，126）提供给线性发射机（100）。然后使用DAPS（126）来调整闭环反馈的至少一个环路参数，从而减少偏离信道干扰。

3. 发明授权

US5675286A Method and apparatus for an improved linear transmitter 失效
标题翻译：改进的线性变送器的方法和装置
公开(公告)号：US5675286A
公开(公告)日：1997-10-07
申请号：US599656
申请日：1996-02-12
申请人： Michael H. Baker , Paul H. Gailus , William J. Turney , Lawrence F. Cygan
发明人： Michael H. Baker , Paul H. Gailus , William J. Turney , Lawrence F. Cygan
IPC分类号： H03F1/32 , H03F1/34 , H03G3/30
CPC分类号： H03G3/3047 , H03F1/3247 , H03F1/3282 , H03F1/345 , H03G3/3042
摘要： An amplifier structure (200) includes a main amplifier loop (203) for efficiently amplifying an input signal at a power amplifier (228) coupled to a load susceptible to impedance variations. The amplifier loop (200) further includes an auxiliary loop (201) coupled to the main loop (201) for simultaneously preventing the power amplifier (228) from operating inefficiently or causing off-channel interference.
摘要翻译：放大器结构（200）包括主放大器环（203），用于有效地放大耦合到容易受阻抗变化的负载的功率放大器（228）的输入信号。放大器回路（200）还包括耦合到主回路（201）的辅助回路（201），用于同时防止功率放大器（228）低效运行或导致离线通道干扰。

4. 发明授权

US5564087A Method and apparatus for a linear transmitter 失效
标题翻译：线性变送器的方法和装置
公开(公告)号：US5564087A
公开(公告)日：1996-10-08
申请号：US333693
申请日：1994-11-03
申请人： Lawrence F. Cygan , Paul H. Gailus , William J. Turney
发明人： Lawrence F. Cygan , Paul H. Gailus , William J. Turney
IPC分类号： H03F1/34 , H03G3/30 , H04B1/04 , H01Q11/12
CPC分类号： H03G3/3042 , H03F1/34 , H03F2200/57 , H04B2001/0433
摘要： A method and apparatus is provided for a transmitter (200) with a stable, linear response. The transmitter (200) includes an amplification stage (242), and a negative feedback correction loop (244) with a feedback signal (252). A reference signal (251) is combined with the feedback signal (252) to produce an error signal (253) for coupling to the amplification stage (242). Transmitter parameters are varied when a difference between the reference signal (251) and the error signal (253) exceeds a particular threshold.
摘要翻译：为具有稳定的线性响应的发射机（200）提供了一种方法和装置。发射机（200）包括具有反馈信号（252）的放大级（242）和负反馈校正环（244）。参考信号（251）与反馈信号（252）组合以产生用于耦合到放大级（242）的误差信号（253）。当参考信号（251）和误差信号（253）之间的差超过特定阈值时，变送器参数是变化的。

5. 发明授权

US5564086A Method and apparatus for enhancing an operating characteristic of a radio transmitter 失效
标题翻译：用于增强无线电发射机的操作特性的方法和装置
公开(公告)号：US5564086A
公开(公告)日：1996-10-08
申请号：US158551
申请日：1993-11-29
申请人： Lawrence F. Cygan , Paul H. Gailus , William J. Turney , Francis R. Yester, Jr.
发明人： Lawrence F. Cygan , Paul H. Gailus , William J. Turney , Francis R. Yester, Jr.
IPC分类号： H04B1/04
CPC分类号： H04B1/0458
摘要： In a radio transmitter (100) that includes a power amplifier (104) and an antenna (106), a method for enhancing an operating characteristic of the radio transmitter (100) can be accomplished in the following manner. The power amplifier (104) provides a signal (113) to a variable matching network (111), wherein the signal (113) comprises energy to be radiated by the antenna (106). The variable matching network (111) couples the signal (113) to a sampler (112) that is operably coupled to an output of the variable matching network (111 ) and the antenna (106). The sampler (112) samples a forward component (114) and a reflected component (115) of the signal (113). The radio transmitter (100) processes the sampled forward and reflected components (116, 118) to produce a feedback control signal (120). The feedback control signal (120) is used to adjust the variable matching network (111 ), such that an operating characteristic of the radio transmitter (100) is enhanced.
摘要翻译：在包括功率放大器（104）和天线（106）的无线电发射机（100）中，可以以下列方式实现增强无线电发射机（100）的工作特性的方法。功率放大器（104）向可变匹配网络（111）提供信号（113），其中信号（113）包括由天线（106）辐射的能量。可变匹配网络（111）将信号（113）耦合到可操作地耦合到可变匹配网络（111）和天线（106）的输出的采样器（112）。采样器（112）对信号（113）的正向分量（114）和反射分量（115）进行采样。无线电发射机（100）处理采样的正向和反射分量（116,118）以产生反馈控制信号（120）。反馈控制信号（120）用于调整可变匹配网络（111），使得无线电发射机（100）的工作特性得到增强。

6. 发明授权

US5542096A Method for a transmitter to compensate for varying loading without an isolator 失效
公开(公告)号：US5542096A
公开(公告)日：1996-07-30
申请号：US379417
申请日：1995-01-27
申请人： Lawrence F. Cygan , Paul H. Gailus , William J. Turney
发明人： Lawrence F. Cygan , Paul H. Gailus , William J. Turney
IPC分类号： H03F1/32 , H03F1/34 , H04B1/04 , H04B17/00
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.

7. 发明授权

US5423082A Method for a transmitter to compensate for varying loading without an isolator 失效
标题翻译：发射机的方法，用于补偿没有隔离器的变化负载
公开(公告)号：US5423082A
公开(公告)日：1995-06-06
申请号：US80635
申请日：1993-06-24
申请人： Lawrence F. Cygan , Paul H. Gailus , William J. Turney
发明人： Lawrence F. Cygan , Paul H. Gailus , William J. Turney
IPC分类号： H03F1/32 , H03F1/34 , H04B1/04 , H03G3/20
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.
摘要翻译：包括放大元件，天线，增益级和闭环反馈的发射机可以在没有隔离器的情况下补偿变化的天线负载。这可以通过确定变化负载对总体环路增益的影响来实现。了解效果，发射机调节增益级的增益，以保持恒定的总体环路增益，从而无需隔离器。

8. 发明授权

US07071775B2 Method and apparatus for an enhanced efficiency power amplifier 有权
标题翻译：一种增强效率功率放大器的方法和装置
公开(公告)号：US07071775B2
公开(公告)日：2006-07-04
申请号：US10872748
申请日：2004-06-21
申请人： Paul H. Gailus , Lawrence F. Cygan
发明人： Paul H. Gailus , Lawrence F. Cygan
IPC分类号： H03F3/68
CPC分类号： H03F3/604 , H03F1/02 , H03F1/0288 , H03F3/602
摘要： A power amplifier that includes: an input drive controller (310) for receiving an input signal (312) and for generating from the input signal at least a first drive signal (314), a second drive signal (316), and a third drive signal (318); an outphasing amplifier network (320) coupled to the input drive controller that includes at least a first outphasing amplifier (322) for amplifying the first drive signal and a second outphasing amplifier (326) for amplifying the second drive signal; a peaking amplifier network (330) coupled to the input drive controller that includes at least a first peaking amplifier (332) for amplifying the third drive signal; and a combining network (340) coupled to the outphasing amplifier network and the peaking amplifier network for combining at least the amplified first, second and third drive signals to generate an output signal at a load.
摘要翻译：一种功率放大器，包括：输入驱动控制器（310），用于接收输入信号（312）并且用于从输入信号产生至少第一驱动信号（314），第二驱动信号（316）和第三驱动信号（318）; 耦合到输入驱动控制器的外部放大器网络（320），其包括用于放大第一驱动信号的至少第一外相放大器（322）和用于放大第二驱动信号的第二外相放大器（326）耦合到输入驱动控制器的峰化放大器网络（330），其包括用于放大第三驱动信号的至少第一峰值放大器（332）以及耦合到所述外相放大器网络和所述峰值放大器网络的组合网络（340），用于至少组合放大的第一，第二和第三驱动信号以在负载处产生输出信号。

9. 发明授权

US06262629B1 High efficiency power amplifier having reduced output matching networks for use in portable devices 有权
标题翻译：具有减少的用于便携式设备的输出匹配网络的高效率功率放大器
公开(公告)号：US06262629B1
公开(公告)日：2001-07-17
申请号：US09347675
申请日：1999-07-06
申请人： Robert E. Stengel , Wang-Chang A. Gu , Gustavo D. Leizerovich , Lawrence F. Cygan
发明人： Robert E. Stengel , Wang-Chang A. Gu , Gustavo D. Leizerovich , Lawrence F. Cygan
IPC分类号： H03F368
CPC分类号： H03F1/0288 , H03F1/0261 , H03F2200/198
摘要： A power amplifier includes a carrier amplifier path and a peaking amplifier path. The carrier amplifier path includes a carrier amplifier (208), and an impedance transforming network (214). The peaking amplifier path includes a peaking amplifier (210), an impedance transforming network (216), and a phase delay quarter wave element (226). The arrangement forms an inverted Doherty combiner where as the nominal impedance at a summing node (230) increases with increased conduction from the peaking amplifier, the load impedance at the output of the carrier amplifier decreases so as to maintain the carrier amplifier at a saturation point as the input signal (232) increases, and results in a reduction of the number of phase delay elements needed over a conventional Doherty approach. In a preferred embodiment the carrier and peaking amplifiers consist of cascaded stages, and are disposed on a common integrated circuit die (304). The impedance transforming networks and phase delay element are disposed on a common substrate (306), as is an input splitter network (308).
摘要翻译：功率放大器包括载波放大器路径和峰化放大器路径。载波放大器路径包括载波放大器（208）和阻抗变换网络（214）。峰化放大器路径包括峰值放大器（210），阻抗变换网络（216）和相位延迟四分之一波长元件（226）。该布置形成反向Doherty组合器，其中当加法节点（230）处的标称阻抗随着来自峰化放大器的传导增加而增加时，载波放大器的输出处的负载阻抗减小，以便将载波放大器保持在饱和点随着输入信号（232）增加，并且导致相对于常规Doherty方法所需的相位延迟元件的数量的减少。在优选实施例中，载波和峰值放大器由级联级组成，并且被布置在公共集成电路管芯（304）上。阻抗变换网络和相位延迟元件如输入分配器网络（308）一样设置在公共基板（306）上。

10. 发明授权

US08149027B2 Circuit with a voltage dependent resistor for controlling an on/off state of a transistor 失效
标题翻译：具有用于控制晶体管的导通/截止状态的电压依赖电阻器的电路
公开(公告)号：US08149027B2
公开(公告)日：2012-04-03
申请号：US12166882
申请日：2008-07-02
申请人： Lawrence F. Cygan , Andrew M. Khan , Curtis M. Williams
发明人： Lawrence F. Cygan , Andrew M. Khan , Curtis M. Williams
IPC分类号： H03K3/00
CPC分类号： H03F3/2173
摘要： An H-bridge circuit formed from two sub-circuits coupled to each other by a load network across a respective load node of each of the sub-circuits. Each sub-circuit of the two sub-circuits comprises a depletion mode upper transistor with a second electrode coupled to a first electrode of a lower transistor. The load node of the sub-circuit is disposed between the second electrode of the upper transistor and the first electrode of a lower transistor. There is a first voltage supply node coupled to a first electrode of the upper transistor and a second voltage supply node is coupled to a second electrode of the lower transistor. An upper driver transistor selectively couples a gate electrode of the upper transistor to an upper drive voltage node, the upper driver transistor having a control electrode coupled to an upper switched voltage supply circuit. There is also a lower switched voltage supply circuit coupled to a gate electrode of the lower transistor and a voltage dependent non-linear resistor is coupled across the gate electrode and second electrode of the upper transistor. In use, when the lower transistor and upper driver transistor are in a non-conductive state a potential difference across the voltage dependent non-linear resistor is sufficiently small enough to control the upper transistor into a conductive state. Conversely, when the lower transistor and upper driver transistor are in a conductive state the potential difference across the voltage dependent non-linear resistor provides a negative bias to the gate electrode of the upper transistor that has a negative potential sufficient to control the upper transistor into a non-conductive state.
摘要翻译：由两个子电路形成的H桥电路，两个子电路通过负载网络彼此耦合，跨越每个子电路的相应负载节点。两个子电路的每个子电路包括耗尽型上部晶体管，其第二电极耦合到下部晶体管的第一电极。子电路的负载节点设置在上部晶体管的第二电极和下部晶体管的第一电极之间。存在耦合到上部晶体管的第一电极的第一电压供应节点和第二电压供应节点耦合到下部晶体管的第二电极。上驱动晶体管将上晶体管的栅电极选择性地耦合到上驱动电压节点，上驱动晶体管具有耦合到上开关电压电路的控制电极。还有一个耦合到下部晶体管的栅电极的较低开关电压电源电路，并且依赖于电压的非线性电阻器耦合在上部晶体管的栅电极和第二电极之间。在使用中，当下晶体管和上驱动晶体管处于非导通状态时，电压相关非线性电阻器两端的电位差足够小以将上晶体管控制为导通状态。相反，当下晶体管和上驱动晶体管处于导通状态时，电压相关非线性电阻器两端的电位差向上晶体管的栅极提供负偏压，该栅极具有足以控制上晶体管的负电位非导电状态。

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