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1. 发明授权

US4963843A Stripline filter with combline resonators 失效
标题翻译：带梳状谐振器的带状滤波器
公开(公告)号：US4963843A
公开(公告)日：1990-10-16
申请号：US265151
申请日：1988-10-31
申请人： David S. Peckham
发明人： David S. Peckham
IPC分类号： H01P1/203
CPC分类号： H01P1/20345
摘要： A combline stripline filter includes a number of conductive strips, each connected to ground on one end and capacitively loaded to ground at the other end. Input and output pads will make a surface mountable connection to a printed circuit board. Tuning is provided for by removing ground over the extension ends of the outside resonators. The center resonators are tuned by removing metal from areas on the cover that are connected to the resonators by plated through holes. Undesired capacitance is compensated for by rounding the ends of the resonators and the opposing ground planes.
摘要翻译：梳状带状线滤波器包括多个导电条，每个导电条在一端连接到地，并在另一端电容加载到地。输入和输出焊盘将与印刷电路板进行表面安装连接。通过在外部谐振器的延伸端上移除接地来提供调谐。中心谐振器通过从通过电镀通孔连接到谐振器的盖上的区域去除金属来进行调谐。通过使谐振器的端部和相对的接地平面四舍五入来补偿不期望的电容。

2. 发明授权

US06700451B1 Cross coupled cascode voltage controlled oscillator 有权
标题翻译：交叉耦合共源共栅压控振荡器
公开(公告)号：US06700451B1
公开(公告)日：2004-03-02
申请号：US10281591
申请日：2002-10-28
申请人： David S. Peckham , James S. Irwin
发明人： David S. Peckham , James S. Irwin
IPC分类号： H03B500
CPC分类号： H03B5/1228 , H03B5/1212 , H03B5/124
摘要： A cross-coupled cascode voltage controlled oscillator including a variable-frequency tank circuit, first and second cascode-coupled active devices coupled to the tank circuit, and third and fourth cascode-coupled active devices coupled to the tank circuit, the first and second active devices being cross-coupled to the third and fourth active devices. The invention produces lower drain the gate voltages resulting in fewer device failures.
摘要翻译：交叉耦合共源共栅压控振荡器，包括可变频率电路，耦合到所述电路的第一和第二共源共栅有源器件以及耦合到所述电路的第三和第四共源共栅有源器件，所述第一和第二有源装置被交叉耦合到第三和第四有源装置。本发明产生较低的漏极，栅极电压导致更少的器件故障。

3. 发明授权

US06674333B1 Band switchable voltage controlled oscillator with substantially constant tuning range 有权
标题翻译：带可切换压控振荡器，其调谐范围基本恒定
公开(公告)号：US06674333B1
公开(公告)日：2004-01-06
申请号：US10271828
申请日：2002-10-15
申请人： David S. Peckham , Arul M. Balasubramaniyan
发明人： David S. Peckham , Arul M. Balasubramaniyan
IPC分类号： H03B500
CPC分类号： H03J5/244 , H03B2201/0208 , H03B2201/0275
摘要： Systems and methods are described for a band switchable voltage controlled oscillator. A method comprises: operating said voltage controlled oscillator in a first frequency band by switching a first capacitive circuit having a capacitance that varies with a tuning voltage; and operating said voltage controlled oscillator in a second frequency band by switching a second capacitive circuit having a capacitance that does not vary with the tuning voltage. An apparatus comprises: a switchable variable capacitance circuit; a switchable fixed capacitance circuit coupled to the switchable variable capacitance circuit; a controller for selectively switching said switchable fixed and variable capacitance circuits; a fixed tank capacitance circuit coupled to the switchable fixed capacitance circuit; a main tuning voltage variable capacitance circuit coupled to the fixed tank capacitance circuit; a tank inductance coupled to the main tuning voltage variable capacitance circuit; and an amplifier circuit coupled to the tank inductance.
摘要翻译：对带式可切换压控振荡器描述了系统和方法。一种方法包括：通过切换具有随调谐电压而变化的电容的第一电容电路来操作第一频带中的所述压控振荡器; 以及通过切换具有不随所述调谐电压而变化的电容的第二电容电路，在所述第二频带中操作所述压控振荡器。一种装置包括：可切换可变电容电路; 耦合到所述可切换可变电容电路的可切换固定电容电路; 用于选择性地切换所述可切换固定和可变电容电路的控制器; 耦合到可切换固定电容电路的固定电容电容电路; 主调谐电压可变电容电路耦合到固定槽电容电路; 耦合到主调谐电压可变电容电路的谐振电感; 以及耦合到箱体电感的放大器电路。

4. 发明授权

US06298224B1 Multiple frequency band receiver 有权
标题翻译：多频段接收机
公开(公告)号：US06298224B1
公开(公告)日：2001-10-02
申请号：US09255181
申请日：1999-02-22
申请人： David S. Peckham , David Z. Ding , Frank Skutta , Robert M. Johnson, Jr.
发明人： David S. Peckham , David Z. Ding , Frank Skutta , Robert M. Johnson, Jr.
IPC分类号： H04B118
CPC分类号： H04B1/406 , H03D7/12
摘要： A multiple frequency band receiver (102) receives at least two frequency bands that are close but not adjacent. A first bandpass filter (304) passes signals in the first frequency band. A second bandpass filter (306) passes signals in the second frequency band. The first and second filters each attenuate signals between the first and second frequency band to at least a first level so as to provide selectivity in the frequency range between the first and second frequencies to prevent the signals between these frequency bands from being further processed by the communication device. A third filter (322) coupled to first and second filters passes signals in both the first and second frequency band and attenuates signals above the pass band of the higher of the first and second filters and below the lower of the first and second filters.
摘要翻译：多频带接收机（102）接收至少两个接近但不相邻的频带。第一带通滤波器（304）传递第一频带中的信号。第二带通滤波器（306）使第二频带中的信号通过。第一和第二滤波器各自将第一和第二频带之间的信号衰减到至少第一电平，以便在第一和第二频率之间的频率范围内提供选择性，以防止这些频带之间的信号被通讯装置耦合到第一和第二滤波器的第三滤波器（322）通过第一和第二频带中的信号，并且衰减第一和第二滤波器中较高者的通带上方的信号，并且低于第一和第二滤波器的较低者。

5. 发明授权

US6049704A Apparatus for amplifying an RF signal 失效
标题翻译：用于放大RF信号的装置
公开(公告)号：US6049704A
公开(公告)日：2000-04-11
申请号：US988490
申请日：1997-12-10
申请人： David S. Peckham , Michael F. Landherr , Armin W. Klomsdorf , Mark A. Pennock
发明人： David S. Peckham , Michael F. Landherr , Armin W. Klomsdorf , Mark A. Pennock
IPC分类号： H03G3/00 , H03G3/30
CPC分类号： H03G3/3036 , H03G3/007
摘要： According to the apparatus of the present disclosure, dual gate control and dual gain control uses variable voltages on the gates of first stage (302) and a second stage (304) to control the output power. In alternate embodiments, dual drain control is also employed using a variable voltage supply on the drains of the first stage (302) and the second stage (304). In particular, a level shifter circuit (421) is employed to convert a positive voltage gate control signal to negative voltage with respect to ground. Drain current limiting circuits (417, 419) are used to sample drain currents and generate gate voltages to maintain a desired current ratio between stages of a multi-stage amplifier. When dual drain control is also employed, a 1:1 ratio of drain control voltages is employed at low power levels, with a single drain control at higher power levels.
摘要翻译：根据本公开的装置，双栅极控制和双增益控制在第一级（302）和第二级（304）的栅极上使用可变电压来控制输出功率。在替代实施例中，也采用双漏极控制，使用在第一级（302）和第二级（304）的漏极上的可变电压源。特别地，使用电平移位器电路（421）将正电压门控制信号转换为相对于地的负电压。漏极限流电路（417,419）用于对漏极电流进行采样，并产生栅极电压以在多级放大器的级之间保持期望的电流比。当采用双漏极控制时，在低功率电平下采用1：1的漏极控制电压比，在较高的功率电平下采用单个漏极控制。

6. 发明授权

US07539462B2 Configurable multi-mode modulation system and transmitter 有权
标题翻译：可配置多模调制系统和发射机
公开(公告)号：US07539462B2
公开(公告)日：2009-05-26
申请号：US11199737
申请日：2005-08-09
申请人： David S. Peckham , Richard B. Meador , Kevin B. Traylor
发明人： David S. Peckham , Richard B. Meador , Kevin B. Traylor
IPC分类号： H04B1/02
CPC分类号： H04B1/0483 , H03F1/0205 , H03F1/34 , H03F3/24 , H03F2200/294 , H03F2200/372 , H04B1/406 , H04B2001/0433
摘要： A multi-mode transmitter architecture is configurable for multiple modulation modes using either polar or polar-lite modulation. Multiplexed signal paths and reconfigurable components are controlled for performance in GMSK and EDGE burst modes. Polar-lite EDGE modulation is programmed by setting a multiplexer coupling a first amplitude modulated signal path with a frequency modulated signal path input to a dual-mode power amplifier for amplification of the combined EDGE transmission signal. In full-polar EDGE modulation, amplitude modulated signal is multiplexed into a second amplitude modulated signal path for A/D conversion and comparison with a polar feedback signal coupled from the power amplifier output. The resulting comparison is applied to a power control port of the power amplifier to amplitude modulate the EDGE transmission output. Multiplexers are configured to disconnect the amplitude modulated paths when operating in GMSK signaling for both full-polar and polar-lite modulation. Multiplexers selectively couple power feedback into the second amplitude modulated signal path to provide power control and output power ramping for burst transmissions.
摘要翻译：多模式发射机架构可以使用极性或极性微调制来配置多种调制模式。控制多路复用信号路径和可重构组件，以实现GMSK和EDGE突发模式的性能。通过设置将第一幅度调制信号路径与输入到双模功率放大器的频率调制信号路径耦合的多路复用器来编程极性EDGE调制，以放大组合EDGE传输信号。在全极性EDGE调制中，幅度调制信号被多路复用到第二幅度调制信号路径用于A / D转换，并与从功率放大器输出耦合的极性反馈信号进行比较。所得到的比较被应用于功率放大器的功率控制端口以幅度调制EDGE传输输出。多路复用器被配置为在GMSK信号中进行全极性和极坐标调制时断开幅度调制路径。多路复用器将功率反馈选择性地耦合到第二幅度调制信号路径中，以提供突发传输的功率控制和输出功率斜坡。

7. 发明授权

US08548400B2 System and method for polar modulation using power amplifier bias control 有权
标题翻译：使用功率放大器偏置控制的极化调制系统和方法
公开(公告)号：US08548400B2
公开(公告)日：2013-10-01
申请号：US11445981
申请日：2006-05-31
申请人： Kevin B. Traylor , Richard B. Meador , George B. Norris , David S. Peckham
发明人： Kevin B. Traylor , Richard B. Meador , George B. Norris , David S. Peckham
IPC分类号： H04B1/04
CPC分类号： H03G3/3047
摘要： Systems and techniques are described for applying a polar bias modulation having a phase component and an amplitude component to a signal amplified by a power amplifier. The power amplifier (PA) has a plurality of amplifier gain stages and is configured to amplify an input to create an amplifier output signal. The input to the power amplitude is phase modulated based upon the phase component of the polar bias modulation, but need not be amplitude modulated. Amplitude modulation is provided by logic that includes a detector configured to receive an indication of the amplifier output as a feedback signal, a control module configured to generate a control signal based upon both the feedback signal and the amplitude component of the polar bias modulation, and a bias circuit configured to adjust a bias signal associated with at least one of the plurality of amplifier gain stages in response to the control signal. Such a modulation scheme may be readily applied in enhanced data rate for global service mode (GSM) evolution (EDGE) applications, as well as in other environments that make use of polar modulation.
摘要翻译：描述了将系统和技术应用于具有相位分量和幅度分量的极性偏置调制到由功率放大器放大的信号。功率放大器（PA）具有多个放大器增益级，并且被配置为放大输入以产生放大器输出信号。基于极化偏置调制的相位分量，对功率振幅的输入进行相位调制，但不需要进行幅度调制。幅度调制由逻辑提供，逻辑包括被配置为接收放大器输出的指示作为反馈信号的检测器，控制模块被配置为基于反馈信号和极偏调制的幅度分量来产生控制信号，以及偏置电路，被配置为响应于所述控制信号调整与所述多个放大器增益级中的至少一个相关联的偏置信号。这种调制方案可以容易地应用于全球服务模式（GSM）演进（EDGE）应用的增强数据速率以及利用极化调制的其它环境中。

8. 发明申请

US20070290747A1 System and method for polar modulation using power amplifier bias control 有权
标题翻译：使用功率放大器偏置控制的极化调制系统和方法
公开(公告)号：US20070290747A1
公开(公告)日：2007-12-20
申请号：US11445981
申请日：2006-05-31
申请人： Kevin B. Traylor , Richard B. Meador , George B. Norris , David S. Peckham
发明人： Kevin B. Traylor , Richard B. Meador , George B. Norris , David S. Peckham
IPC分类号： H03G5/16
CPC分类号： H03G3/3047
摘要： Systems and techniques are described for applying a polar bias modulation having a phase component and an amplitude component to a signal amplified by a power amplifier. The power amplifier (PA) has a plurality of amplifier gain stages and is configured to amplify an input to create an amplifier output signal. The input to the power amplitude is phase modulated based upon the phase component of the polar bias modulation, but need not be amplitude modulated. Amplitude modulation is provided by logic that includes a detector configured to receive an indication of the amplifier output as a feedback signal, a control module configured to generate a control signal based upon both the feedback signal and the amplitude component of the polar bias modulation, and a bias circuit configured to adjust a bias signal associated with at least one of the plurality of amplifier gain stages in response to the control signal. Such a modulation scheme may be readily applied in enhanced data rate for global service mode (GSM) evolution (EDGE) applications, as well as in other environments that make use of polar modulation.
摘要翻译：描述了将系统和技术应用于具有相位分量和幅度分量的极性偏置调制到由功率放大器放大的信号。功率放大器（PA）具有多个放大器增益级，并且被配置为放大输入以产生放大器输出信号。基于极化偏置调制的相位分量，对功率振幅的输入进行相位调制，但不需要进行幅度调制。幅度调制由逻辑提供，逻辑包括被配置为接收放大器输出的指示作为反馈信号的检测器，控制模块被配置为基于反馈信号和极偏调制的幅度分量来产生控制信号，以及偏置电路，被配置为响应于所述控制信号调整与所述多个放大器增益级中的至少一个相关联的偏置信号。这种调制方案可以容易地应用于全球服务模式（GSM）演进（EDGE）应用的增强数据速率以及利用极化调制的其它环境中。

9. 发明授权

US07276974B2 Method and apparatus for protecting RF power amplifiers 有权
公开(公告)号：US07276974B2
公开(公告)日：2007-10-02
申请号：US11222545
申请日：2005-09-08
申请人： David A. Newman , Benjamin R. Gilsdorf , David S. Peckham
发明人： David A. Newman , Benjamin R. Gilsdorf , David S. Peckham
IPC分类号： H02H7/20
CPC分类号： H03F3/189 , H03F1/52
摘要： Method and apparatus are provided for protecting radio frequency (RF) power amplifiers. A circuit (10) is provided for limiting a supply current to a first stage (Q3) of the RF power amplifier having a second stage (Q2) coupled to the first stage. The circuit comprises a comparator (14) having first and second inputs and an output, and a switching circuit (12, 20, 22, 24) having an input coupled to the output of the comparator (14) and having an output configured to couple to the first stage (Q3). The first input of the comparator (14) is configured to receive the supply current, and the second input is configured to receive a current supplied to the second stage (Q2). The comparator (14) is configured to compare a ratio of the supply current to the first stage to the current supplied to the second stage (Q2) with a predetermined value. The switching circuit (12, 20, 22, 24) is configured to limit the supply current to the first stage (Q3) when the ratio exceeds the predetermined value.

10. 发明授权

US4809356A Three-way power splitter using directional couplers 失效
标题翻译：使用定向耦合器的三路功率分配器
公开(公告)号：US4809356A
公开(公告)日：1989-02-28
申请号：US153121
申请日：1988-02-08
申请人： David S. Peckham , James J. Crnkovic
发明人： David S. Peckham , James J. Crnkovic
IPC分类号： H04B1/40 , H01P5/18 , H05K1/00 , H05K1/02
CPC分类号： H01P5/185 , H01P5/187 , H05K1/0237 , H05K1/0298
摘要： A three way oscillator signal power splitting circuit splits power provided at the output of a voltage controlled oscillator (VCO). The circuit is implemented on a printed circuit board section having a first layer which includes a first conductor for receiving the power from the VCO, a second layer having a second conductor, substantially parallel to and adjacent the first conductor, for receiving a portion of the power on the first main conductor via broadside coupling, and a third conductor, situated substantially parallel to and adjacent the first and second conductors, for receiving a portion of the power on the first main conductor also via broadside coupling. A ground conductor is additionally included on the third layer for providing a ground reference for the first, second and third conductors, and resistors are used to terminate the second and third conductors.

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