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41. 发明授权

US06720832B2 System and method for converting from single-ended to differential signals 有权
标题翻译：从单端到差分信号转换的系统和方法
公开(公告)号：US06720832B2
公开(公告)日：2004-04-13
申请号：US10184274
申请日：2002-06-26
申请人： Stephen J. Franck , Zabih Toosky
发明人： Stephen J. Franck , Zabih Toosky
IPC分类号： H03F304
CPC分类号： H03F3/345 , H03F1/26 , H03F3/265 , H03F2200/372
摘要： A single-ended signal is converted to differential signals with a first device that converts an input current of a single-ended input signal to a voltage, a second device coupled to the first device to generate a first output current of a double-ended output signal based on the voltage, and a third device coupled to the first device to generate a second complementary output current of the double-ended output signal based on the voltage. The output currents can be amplified by a gain with respect to the input current, and the gain can be set a relative size of the first device with respect to each of the second and third devices. A fourth device can balance the current gain of the first device and cause the current through the second device and the third device to be equal.
摘要翻译：单端信号被转换成具有将单端输入信号的输入电流转换为电压的第一器件的差分信号，耦合到第一器件的第二器件产生双端输出的第一输出电流基于电压的信号，以及耦合到第一器件的第三器件，以基于电压产生双端输出信号的第二互补输出电流。可以通过相对于输入电流的增益放大输出电流，并且可以将增益设置为相对于第二和第三器件中的每一个的第一器件的相对大小。第四设备可以平衡第一设备的当前增益，并使通过第二设备和第三设备的电流相等。

42. 发明授权

US06657499B2 Method and circuit for controlling power amplifiers 失效
公开(公告)号：US06657499B2
公开(公告)日：2003-12-02
申请号：US10054703
申请日：2002-01-18
申请人： Allan Ming-Lun Lin
发明人： Allan Ming-Lun Lin
IPC分类号： H03F304
CPC分类号： H03F1/301 , H03F2200/261 , H03F2200/462 , H03F2200/481
摘要： A bias controller includes a bias detector, a reference comparator, a memory component, and a reference voltage. The bias detector is operable to detect a bias current associated with a device controlled by the bias controller and produce a proportional sensed bias voltage. The reference comparator is operable to compare the bias voltage to a reference voltage and produce a first control signal operable to adjust a bias output of the bias controller. The memory component stores a plurality of reference voltage settings, one for each mode of operation of the device, the memory component including a mode setting input and a reference voltage output signal. The reference voltage adjustment circuit adjusts the reference voltage applied to the reference comparator in accordance with the mode of the device as controlled by the reference voltage output signal.

43. 发明授权

US06653903B2 Supply voltage decoupling device for HF amplifier circuits 失效
标题翻译：用于高频放大器电路的电源电压去耦装置
公开(公告)号：US06653903B2
公开(公告)日：2003-11-25
申请号：US09910800
申请日：2001-07-24
申请人： Martin Leich , Michael Schlectweg
发明人： Martin Leich , Michael Schlectweg
IPC分类号： H03F304
CPC分类号： H03F1/30 , H03F3/607 , H03F2200/15
摘要： A device for decoupling a supply voltage for HF amplifier circuits is described which includes an output line for coupling out an amplified signal, wherein one end of the output line, which is not used for coupling out signals, is connected to a circuit element designed as decoupling circuit. The circuit element has a low ohmic d.c. resistance and presents an HF-power absorption capacity that increases as the frequency increases, thus constituting a reflection-free termination for high frequencies. The circuit element is preferably constituted by several discrete subcircuits connected in succession. The device permits the operation of integrated distributed amplifiers of high performance at a low power loss caused by the decoupling circuit.
摘要翻译：描述了用于去耦HF放大器电路的电源的装置，其包括用于耦合放大信号的输出线，其中不用于耦合输出信号的输出线的一端连接到设计为去耦电路。电路元件具有低欧姆直流电压。并且呈现随着频率增加而增加的HF功率吸收能力，从而构成用于高频的无反射终止。电路元件优选地由连续连接的几个分立的子电路构成。该器件允许在由去耦电路引起的低功率损耗下运行高性能的集成分布式放大器。

44. 发明授权

US06617931B2 Two-stage amplifier 失效
公开(公告)号：US06617931B2
公开(公告)日：2003-09-09
申请号：US09853882
申请日：2001-05-11
申请人： Ulrich Theus , Juergen Kessel
发明人： Ulrich Theus , Juergen Kessel
IPC分类号： H03F304
CPC分类号： H03F1/083 , H02M3/073 , H03F1/305
摘要： A two-stage amplifier includes a first stage and a second stage that are DC-connected through a coupling capacitor Cp. A charge pump generates a bias voltage Vp that is applied across the coupling capacitor Cp leads to maintain the time average of the voltage across said coupling capacitor constant.

45. 发明授权

US06606002B1 Common device node balun grounded balanced amplifier 失效
标题翻译：公共设备节点平衡 - 不平衡变压器接地平衡放大器
公开(公告)号：US06606002B1
公开(公告)日：2003-08-12
申请号：US10092760
申请日：2002-03-07
申请人： Michael Wendell Vice , Michael Louis Frank
发明人： Michael Wendell Vice , Michael Louis Frank
IPC分类号： H03F304
CPC分类号： H03F3/601
摘要： An amplifier circuit includes an amplifier stage and a balun stage. The amplifier stage includes a common node connected to an external ground. An inductance is located between the common node and the external ground. The balun stage is connected to the amplifier stage. The balun stage includes a balun tail. The balun tail is directly connected to the common node of the amplifier stage so that a resulting connection between the balun tail and the common node bypasses the inductance between the common node and the external ground.
摘要翻译：放大器电路包括放大器级和平衡 - 不平衡转换级。放大器级包括连接到外部接地的公共节点。电感位于公共节点和外部接地之间。平衡 - 不平衡转换电路连接到放大器级。平衡 - 不平衡变换器包括一个平衡 - 不平衡变压器尾巴。平衡 - 不平衡变压器尾部直接连接到放大器级的公共节点，使得平衡 - 不平衡转换器尾部和公共节点之间的结果绕过公共节点和外部接地之间的电感。

46. 发明授权

US06603358B2 Integrated circuit with current-limited power output and associated method 失效
公开(公告)号：US06603358B2
公开(公告)日：2003-08-05
申请号：US09928857
申请日：2001-08-13
申请人： William Shearon , Salomon Vulih , Donald Preslar
发明人： William Shearon , Salomon Vulih , Donald Preslar
IPC分类号： H03F304
CPC分类号： H03K17/063 , H03F2200/504 , H03K17/0822
摘要： The integrated circuit includes a power FET for generating an output voltage, a pilot FET for sensing current through the power driving device and generating a reference voltage, and an amplifier circuit for comparing the reference voltage of the pilot device with the output voltage of the power driving device. The amplifier circuit includes a differential pair of matched bipolar junction transistors (BJTs) having a common base. A first BJT of the differential pair being diode-connected. The amplifier circuit controls the gates of the power FET and the pilot FET.

47. 发明授权

US06587000B2 Current mirror circuit and analog-digital converter 有权
标题翻译：电流镜电路和模数转换器
公开(公告)号：US06587000B2
公开(公告)日：2003-07-01
申请号：US10104761
申请日：2002-03-22
申请人： Naoto Oikawa
发明人： Naoto Oikawa
IPC分类号： H03F304
CPC分类号： H03M1/50 , G05F3/262
摘要： Current mirror circuit includes first constant current source, first and second MOS transistors, and first and second operational amplifiers. First constant current source outputs constant current to a first node based on a first reference voltage. First MOS transistor has source grounded, gate connected to the second MOS transistor and drain connected to the first node. Second MOS transistor has source grounded, gate connected to the first MOS transistor and drain connected to a second node. First operational amplifier has first input terminal connected to the first node, second input terminal connected to a third node connected to a second reference voltage and an output terminal connected to the gates of the first and second MOS transistors. Second operational amplifier has first input terminal connected to the third node, second input terminal connected to the second node and output terminal connected through feedback circuit to the second node.
摘要翻译：电流镜电路包括第一恒流源，第一和第二MOS晶体管以及第一和第二运算放大器。第一恒流源基于第一参考电压向第一节点输出恒定电流。第一MOS晶体管具有源极接地，栅极连接到第二MOS晶体管，漏极连接到第一节点。第二MOS晶体管具有源极接地，栅极连接到第一MOS晶体管，漏极连接到第二节点。第一运算放大器具有连接到第一节点的第一输入端子，连接到连接到第二参考电压的第三节点的第二输入端子和连接到第一和第二MOS晶体管的栅极的输出端子。第二运算放大器具有连接到第三节点的第一输入端子，连接到第二节点的第二输入端子和通过反馈电路连接到第二节点的输出端子。

48. 发明授权

US06573795B2 Low quiescent power class AB current mirror circuit 有权
公开(公告)号：US06573795B2
公开(公告)日：2003-06-03
申请号：US10008025
申请日：2001-11-08
申请人： David Hall Whitney , Chau Cuong Tran
发明人： David Hall Whitney , Chau Cuong Tran
IPC分类号： H03F304
CPC分类号： H03F3/3432
摘要： A low quiescent power class AB current mirror circuit includes a first input transistor for receiving an input current and a second output transistor for providing an output current; the first and second transistors having bases connected together; and a first current supply for sinking current from the bases in response to a decrease in input current to lower the quiescent point of the transistors.

49. 发明授权

US06545542B2 Power amplifier with coupler for cross-coupling amplifiers for reduction of differential frequency component 失效
标题翻译：具有用于交叉耦合放大器的耦合器的功率放大器，用于降低差分频率分量
公开(公告)号：US06545542B2
公开(公告)日：2003-04-08
申请号：US09982882
申请日：2001-10-22
申请人： Toshimitsu Matsuyoshi , Kaoru Ishida , Masayuki Miyaji , Seiji Fujiwara
发明人： Toshimitsu Matsuyoshi , Kaoru Ishida , Masayuki Miyaji , Seiji Fujiwara
IPC分类号： H03F304
CPC分类号： H03F1/565 , H03F1/3205 , H03F3/604 , H03F2200/06 , H03F2200/09
摘要： A power amplifier that reduces intermodulation distortion generated by the amplifier while reducing the number of parts is provided. A power amplifier comprises a first balun, to which a combined signal combining two signals of different frequencies is inputted, and which outputs, based on the combined signal, the first and the second signal whose phase are opposite; a first amplifier that outputs the first amplified signal containing the differential frequency component comprising the difference of the frequencies of two signals from the first signal; a second amplifier that outputs the second amplified signal containing the component comprising the difference of the frequencies of two signals from the second signal; and a second balun that outputs the combined signal of the first and the second amplified signals. The component contained in the first and the second amplified signal are inputted via the second and the first amplifier, respectively, to reduce the component.
摘要翻译：提供了减少放大器产生的互调失真同时减少部件数量的功率放大器。功率放大器包括第一平衡 - 不平衡变换器，组合了两个不同频率的信号的组合信号，并且基于组合信号输出相位相反的第一和第二信号; 第一放大器，其输出包含来自第一信号的两个信号的频率差的差分频率分量的第一放大信号; 第二放大器，输出包含来自第二信号的两个信号的频率差的分量的第二放大信号; 以及第二平衡 - 不平衡转换器，其输出第一和第二放大信号的组合信号。分别通过第二放大器和第一放大器输入包含在第一和第二放大信号中的分量以减小分量。

50. 发明授权

US06542037B2 Low distortion broadband amplifier using GaAs pHEMT devices 有权
标题翻译：使用GaAs pHEMT器件的低失真宽带放大器
公开(公告)号：US06542037B2
公开(公告)日：2003-04-01
申请号：US09925762
申请日：2001-08-09
申请人： Alan Linde Noll , Ryan Benjamin Lyford
发明人： Alan Linde Noll , Ryan Benjamin Lyford
IPC分类号： H03F304
CPC分类号： H03F1/223 , H03F3/265 , H03F2200/534 , H03F2200/541
摘要： A broadband power amplifier circuit providing wide bandwidth with low distortion. The broadband power amplifier circuit includes a GaAs pHEMT MMIC with two (2) serially coupled cascode amplifiers in a first half of the circuit, two (2) serially coupled cascode amplifiers in a second half of the circuit, a first balun for receiving a single-ended RF or microwave input signal at a circuit input and providing first and second balanced low level signals to the cascode amplifiers of the first and second circuit halves, respectively, and a second balun for receiving first and second balanced high level signals generated by the cascode amplifiers of the first and second circuit halves, respectively, and providing a single-ended amplified broadband output signal with low distortion at a circuit output.
摘要翻译：宽带功率放大器电路，提供宽带宽，低失真。宽带功率放大器电路包括在电路的前半部分中具有两个（2）串联耦合共源共栅放大器的GaAs pHEMT MMIC，在电路的后半部分有两个（2）串联耦合的共源共栅放大器，第一个平衡 - 不平衡变换器，用于接收单个在电路输入端提供RF或微波输入信号，并分别向第一和第二电路半部的共源共栅放大器提供第一和第二平衡低电平信号，以及第二平衡 - 不平衡变换器，用于接收由第一和第二平衡的低电平信号并且提供在电路输出端具有低失真的单端放大的宽带输出信号。

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