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公开(公告)号：US5572435A
公开(公告)日：1996-11-05
申请号：US202610
申请日：1994-02-28
CPC分类号： H01F41/02
摘要： A method for designing and making an RF transformer has been provided. The method utilizes a model for an RF transformer wherein the model has parameters that directly relate to a physical construction of the components of the transformer, namely, a core and a twisted wire. The method separates the core from the twisted wire so that characteristics of each can be separately determined. These determined characteristics are then optimized and used to design and make a transformer.
摘要翻译： 已经提供了一种用于设计和制造RF变压器的方法。 该方法利用RF变压器的模型，其中模型具有与变压器的部件的物理结构直接相关的参数，即铁心和绞线。 该方法将芯与绞合线分开，以便可以分别确定每个的特性。 然后优化这些确定的特性，并用于设计和制造变压器。
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公开(公告)号：US5420562A
公开(公告)日：1995-05-30
申请号：US127613
申请日：1993-09-28
IPC分类号： H01C7/00 , H01C17/242 , H01C3/12
CPC分类号： H01C7/003 , H01C17/242
摘要： A resistor having a novel physical geometry is provided. The physical geometry of the resistor minimizes the current paths through the resistor such that the reactance components of the resistor is minimized for radio frequency operation. The resistor is made from a resistive material such as chrome silicon oxide, nichrome. The physical geometry of the resistor layout reduces the physical area occupied by the resistor, and also results in lower sensitivity to a DC trimming procedure used in the manufacturing process.
摘要翻译： 提供具有新物理几何形状的电阻器。 电阻器的物理几何结构使通过电阻器的电流路径最小化，使得电阻器的电抗分量使射频操作最小化。 该电阻由电阻材料制成，如铬氧化硅，镍铬合金。 电阻器布局的物理几何形状减小了电阻器占用的物理面积，并且还导致对制造过程中使用的DC修整程序的较低灵敏度。
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公开(公告)号：US06943635B1
公开(公告)日：2005-09-13
申请号：US10676803
申请日：2003-09-30
IPC分类号： H03B5/12
CPC分类号： H03B5/1268 , H03B5/1243 , H03B5/1265
摘要： A voltage-controlled oscillator (VCO) formed upon a substrate with a first inductor being offset from a second inductor in one of three dimensions and forming a common area that may contain at least one of a varactor, capacitor, oscillator, or switch.
摘要翻译： 形成在具有第一电感器的衬底上的压控振荡器（VCO），其具有三维之一的第二电感器，并且形成可包含变容二极管，电容器，振荡器或开关中的至少一个的公共区域。
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公开(公告)号：US5781072A
公开(公告)日：1998-07-14
申请号：US717026
申请日：1996-09-20
IPC分类号： H03F3/26
CPC分类号： H03F3/26
摘要： An amplifier circuit (30) has the capability for driving a large number of loads while still maintaining the desirable gain response. The amplifier circuit (30) includes two push-pull amplifier circuits (31 and 41). A first push-pull amplifier circuit (31) has a pair of bipolar transistors (33 and 34) connected in a cascode circuit configuration and a second pair of bipolar transistors (35 and 36) connected in a cascode circuit configuration. In addition, the second push-pull amplifier circuit (41) has a first pair of bipolar transistors (43 and 44) connected in a cascode circuit configuration and a second pair of bipolar transistors (45 and 46) connected in a cascode circuit configuration. The channel distortion and gain response of the amplifier circuit (30) are significantly improved by the push-pull amplifier circuits (31 and 41).
摘要翻译： 放大器电路（30）具有驱动大量负载的能力，同时仍保持期望的增益响应。 放大器电路（30）包括两个推挽放大电路（31和41）。 第一推挽放大器电路（31）具有以共源共栅电路配置连接的一对双极晶体管（33和34）和以共源共栅电路配置连接的第二对双极晶体管（35和36）。 此外，第二推挽放大器电路（41）具有以共源共栅电路结构连接的第一对双极晶体管（43和44）和以共源共栅电路配置连接的第二对双极晶体管（45和46）。 通过推挽放大电路（31和41）显着地改善了放大器电路（30）的通道失真和增益响应。
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公开(公告)号：US5051710A
公开(公告)日：1991-09-24
申请号：US543505
申请日：1990-06-25
摘要： A transmission line transformer is used for impedance matching in high frequency, broadband applications. The characteristic impedance, Z.sub.o, of the transmission line transformer is adjusted to an optimum value by terminating the ends of the transmission line using variable capacitors. The capability to trim the transmission line transformer to an optimum value of Z.sub.o reduces the criticality of the various factors which influence Z.sub.o during the manufacturing process.
摘要翻译： 传输线变压器用于高频宽带应用中的阻抗匹配。 通过使用可变电容器终止传输线的端部，将传输线变压器的特性阻抗Zo调整到最佳值。 将传输线变压器修剪到Zo的最佳值的能力降低了在制造过程中影响Zo的各种因素的关键性。
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公开(公告)号：US4785263A
公开(公告)日：1988-11-15
申请号：US55207
申请日：1987-05-28
CPC分类号： H03B5/1228 , H03B5/1203 , H03B5/1243 , H03B2200/0008 , H03B2200/0032
摘要： A Ga As FET oscillator includes an FET having gate-drain and source connections. A tuned circuit is connected to the FET gate. Bias voltage is supplied to the FET. A parallel-connected resistor and capacitor is connected to the FET source. A Schottky diode is connected across the FET gate-source junction and the parallel connected resistor and capacitor, with its anode connected to the FET gate and its cathode connected to the resistor and capacitor. The Schottky diode limits the positive voltage across the gate-source junction of the Ga As FET to prevent gate-source current flow.
摘要翻译： GaAs FET振荡器包括具有栅极 - 漏极和源极连接的FET。 调谐电路连接到FET门。 偏置电压被提供给FET。 并联电阻和电容连接到FET源。 肖特基二极管连接在FET栅极 - 源极结和并联的电阻和电容之间，其阳极连接到FET栅极，其阴极连接到电阻和电容。 肖特基二极管限制Ga As FET栅极 - 源极结两端的正电压，以防止栅极 - 源极电流流动。
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7.发明授权Amplifier with active bias compensation and method for adjusting quiescent current 有权具有有源偏置补偿的放大器和调整静态电流的方法
公开(公告)号：US6046642A
公开(公告)日：2000-04-04
申请号：US149520
申请日：1998-09-08
CPC分类号： H03F3/193 , H03F1/301 , H03F3/45089 , H03F3/45475 , H03F3/45538 , H03F2203/45392 , H03F2203/45498 , H03F2203/45542 , H03F2203/45638
摘要： An active bias compensation circuit (110) senses a quiescent current flowing in an amplifier (130) and adjusts the quiescent current to maintain an optimal DC biasing of the amplifier (130) over a wide range of factors, e.g., temperature variation, process variation, history of the amplifier (130), etc. The compensation circuit (110) includes two transistors (101, 102) forming a difference amplifier. A sensing voltage proportional to the quiescent current and a reference voltage are applied to the base electrodes of the two transistors (101, 102), which generates a bias signal in response to a difference between the sensing voltage and the reference voltage. The bias signal adjusts the quiescent current in the amplifier (130).
摘要翻译： 有源偏置补偿电路（110）感测在放大器（130）中流动的静态电流并且调整静态电流以在宽范围的因素（例如，温度变化，过程变化）上维持放大器（130）的最佳DC偏置 ，放大器（130）的历史等。补偿电路（110）包括形成差分放大器的两个晶体管（101,102）。 与静态电流成比例的感测电压和参考电压施加到两个晶体管（101,102）的基极，其响应于感测电压和参考电压之间的差产生偏置信号。 偏置信号调节放大器（130）中的静态电流。
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公开(公告)号：US5105175A
公开(公告)日：1992-04-14
申请号：US667936
申请日：1991-03-12
CPC分类号： H01P7/082 , H01P11/008 , H01P7/084
摘要： A rigid, monolithic structure for the resonator elements of a tuned stripline segment which may be adjusted by simple, low cost techniques. The resonator elements use a stripline segment (23,24) made from conductive layers of a multilayer printed circuit board. This structure allows the stripline segment to be totally enclosed in a solid, incompressible dielectric material (15,17) which is essentially immune to microphonic effects. A plurality of shorting holes (21) are fabricated at one end of the stripline which serve to short circuit the stripline segment (23) to the ground conductors (18,19) on the layers above and below the stripline segment (23). Adjustment of the resonant frequency is accomplished by removing the plated conductor inside one of the holes at a time, thus removing the short, until the desired resonant frequency is obtained.
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公开(公告)号：US5451906A
公开(公告)日：1995-09-19
申请号：US237571
申请日：1994-05-03
摘要： A circuit for compensating a cascode amplifier has been provided. The circuit includes a capacitor and an inductor for enhancing the stability of the amplifier and for extending the usable frequency range of the amplifier by maintaining the group delay of the amplifier substantially constant over a large frequency range. With such a compensated amplifier, an improved CTB distortion performance in the upper operating frequency range of the amplifier is achieved with increased stability. In other words, the bandwidth of the amplifier is extended with improved stability and distortion performance.
摘要翻译： 已经提供了用于补偿共源共栅放大器的电路。 该电路包括用于增强放大器的稳定性的电容器和电感器，并且通过在放大器的大频率范围内保持放大器的组延迟基本上恒定来延长放大器的可用频率范围。 利用这种补偿放大器，在增加的稳定性的情况下实现了在放大器的较高工作频率范围内改进的CTB失真性能。 换句话说，放大器的带宽随着稳定性和失真性能的提高而延长。
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公开(公告)号：US5416451A
公开(公告)日：1995-05-16
申请号：US124875
申请日：1993-09-22
CPC分类号： H01P5/10
摘要： A novel circuit and method for providing amplitude and phase compensation for a balun in order to provide first and second voltage signals that are balanced has been provided. The compensation is achieved by adding an amplitude and phase compensation circuit such as a transmission line (14) or inductive (20) and capacitive (22) lumped elements in series with one of the ports of the balun on the balanced side. The amplitude and phase compensation circuit includes a characteristic impedance parameter (Zo) and an electrical length parameter (Eo) that are optimized such that the amplitude difference between first and second voltage signals is minimized, while the magnitude of the phase difference between first and second voltage signals is maximized.
摘要翻译： 已经提供了一种用于为巴伦提供幅度和相位补偿以提供平衡的第一和第二电压信号的新型电路和方法。 通过在平衡侧的平衡 - 不平衡转换器的一个端口上串联增加幅度和相位补偿电路，例如传输线（14）或电感（20）和电容（22）集总元件串联来实现补偿。 幅度和相位补偿电路包括优化的特征阻抗参数（Zo）和电长度参数（Eo），使得第一和第二电压信号之间的幅度差被最小化，而第一和第二电压信号之间的相位差的幅度 电压信号最大化。
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