公开(公告)号：US4504886A

公开(公告)日：1985-03-12

申请号：US470809

申请日：1983-02-28

申请人： Lawrence F. Cygan ,  Raul Olivera ,  John F. Pottle

发明人： Lawrence F. Cygan ,  Raul Olivera ,  John F. Pottle

IPC分类号： H05K1/02 ,  H05K1/14 ,  H05K1/18 ,  H05K3/34 ,  H05K7/12 ,  H05K7/20

CPC分类号： H05K7/12 ,  H05K1/0243 ,  H05K1/0203 ,  H05K1/021 ,  H05K1/0231 ,  H05K1/142 ,  H05K1/182 ,  H05K2201/10166 ,  H05K2201/10371 ,  H05K2201/10409 ,  H05K2201/1053 ,  H05K2201/10969 ,  H05K3/0061 ,  H05K3/3421

摘要： The invention is a grounding/positioning clip for providing a DC ground return path, low inductance AC ground path between circuit boards and for positioning electronic components in relation to an electronic device. The assembly includes a heat spreader with an electronic device mounted thereon. The leads of the electronic device are physically and electrically attached to first and second circuit boards. A clip, which has electronic components mounted thereon, fits over the electronic device thereby positioning the electronic components in correct physical relationship to the electronic device and the first and second circuit boards. Also the clip acts as a low inductance AC ground path between the first and second circuit boards and also provides a DC ground path. Preferrably the electronic device is a power transistor and the electronic components mounted on the clip are miniature compression mica capacitors for RF matching. The clip is preferrably formed of sheet metal with a good conductor such as copper plated on the surface.

摘要翻译： 本发明是用于提供DC接地返回路径，电路板之间的低电感AC接地路径和用于相对于电子设备定位电子部件的接地/定位夹。 组件包括其上安装有电子装置的散热器。 电子设备的引线物理和电连接到第一和第二电路板。 具有安装在其上的电子部件的夹子装配在电子设备上，从而将电子部件定位成与电子设备以及第一和第二电路板正确的物理关系。 夹子也用作第一和第二电路板之间的低电感AC接地路径，并且还提供DC接地路径。 优选地，电子设备是功率晶体管，并且安装在夹子上的电子部件是用于RF匹配的微型压缩云母电容器。 夹子优选地由具有良好导体的金属板形成，例如在表面上镀铜。

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。

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。

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。

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。

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。

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。

公开(公告)号：US5015972A

公开(公告)日：1991-05-14

申请号：US395240

申请日：1989-08-17

申请人： Lawrence F. Cygan ,  Helge O. Granberg ,  Richard S. Bickham ,  Carl Missele

发明人： Lawrence F. Cygan ,  Helge O. Granberg ,  Richard S. Bickham ,  Carl Missele

IPC分类号： H03H7/38

CPC分类号： H03H7/38

摘要： A broadband RF transformer design is described that facilitates the construction of a broadband impedance transformer in a compact, planar format, while retaining ease of assembly and manufacture. Broadband operation is achieved through the use of a slotted low-impedance winding structure, common-manufacture ferrite elements, and the optional placement of reactive elements between winding turns. By virtue of construction, thermal performance is enhanced, allowing operation at power levels not previously possible. The invention accommodates functional tuning via laser or abrading techniques. Also, the winding configuration eliminates the need to access the center of a spiral for the purposes of establishing a ground connection.

摘要翻译： 描述了宽带RF变压器设计，其便于以紧凑的平面格式构造宽带阻抗变压器，同时保持组装和制造的容易性。 通过使用开槽的低阻抗绕组结构，共同制造的铁素体元件以及在绕组匝之间可选地布置无功元件来实现宽带操作。 凭借结构，热性能得到提高，允许以前的功率水平运行。 本发明通过激光或研磨技术适应功能调谐。 此外，为了建立接地连接的目的，绕组配置消除了进入螺旋中心的需要。

公开(公告)号：US07825724B2

公开(公告)日：2010-11-02

申请号：US11958978

申请日：2007-12-18

申请人： Lawrence F. Cygan ,  Curtis M. Williams ,  Andrew M. Khan

发明人： Lawrence F. Cygan ,  Curtis M. Williams ,  Andrew M. Khan

IPC分类号： H03F3/38

CPC分类号： H03F3/2173 ,  H03F3/195 ,  H03F3/245 ,  H03F2200/331 ,  H03F2200/336 ,  H03F2200/451

摘要： A method and apparatus for direct conversion of digital data to high power RF signals, known as DDRF. The method and apparatus receive a digital signal, create a digital modulated signal therefrom, and amplify the modulated signal with an H-bridge Power Amplifier for transmission. DDRF uses a multi-level H-bridge amplification circuit to establish a more power efficient digital transmitter.

摘要翻译： 一种用于将数字数据直接转换为大功率RF信号的方法和装置，称为DDRF。 该方法和装置接收数字信号，从中产生数字调制信号，并用H桥功率放大器放大调制信号进行传输。 DDRF使用多电平H桥放大电路来建立更高功率的数字发射器。

公开(公告)号：US06374092B1

公开(公告)日：2002-04-16

申请号：US09455813

申请日：1999-12-04

申请人： Gustavo D. Leizerovich ,  Lawrence F. Cygan

发明人： Gustavo D. Leizerovich ,  Lawrence F. Cygan

IPC分类号： H01Q1112

CPC分类号： H04B1/406 ,  H03F1/02 ,  H03F1/0261 ,  H03F1/0288 ,  H03F3/24 ,  H04B1/0483 ,  H04B2001/045

摘要： An amplifier apparatus for a multimode mobile communication device includes a carrier amplifier (114) and a peaking amplifier (116). The peaking amplifier has an adjustable bias level and is adjusted by a regulator to a predetermined level, depending on which mode of communication is selected. The bias level on the peaking amplifier is held constant so long as the mode of communication is the same. By adjusting the bias point of the peaking amplifier in conjunction with the selection of the mode of communication, the efficiency and the linearity of modulation can be optimized for the particular mode of communication.

摘要翻译： 一种用于多模移动通信设备的放大器装置，包括载波放大器（114）和峰值放大器（116）。 峰值放大器具有可调节的偏置电平，并且根据选择的通信模式，由调节器将其调整到预定电平。 只要通信方式相同，峰值放大器的偏置电平保持不变。 通过调整峰化放大器的偏置点与通信模式的选择，可以针对特定通信模式优化调制的效率和线性。