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    • 1. 发明授权
    • Integrable high-Q tunable capacitor and method
    • 可集成的高Q可调电容器和方法
    • US5994985A
    • 1999-11-30
    • US985564
    • 1997-12-05
    • David R. PehlkeAmit BursteinMau Chung F. Chang
    • David R. PehlkeAmit BursteinMau Chung F. Chang
    • H03B1/00H03J3/16H03J3/20
    • H03J3/16H03B2201/0208H03B2201/0216H03B2201/025H03J2200/10
    • A high-performance integrable tunable inductor includes a "primary" coil and a "drive" coil placed in close proximity to each other and simultaneously driven with primary and drive currents, respectively. The drive current induces mutual components of inductance in the primary coil which vary with the phase and amplitude relationship between the two currents. These relationships are controlled to precisely establish the impedance of the primary coil, allowing the inductor to be "tuned" to provide a desired inductance or resistance by simply varying the phase and amplitude relationships appropriately. Inductance values tunable over ranges of about 2:1 and Q values of nearly 2000 have been demonstrated. The primary coil can also be made to operate as a relatively large integrated capacitance by setting the phase and amplitude relationships appropriately. The tunable inductor can be fabricated with standard CMOS processes, or any of a number of other processing technologies, and thus integrated into a host of analog circuits for which a highly-integrated implementation is desirable.
    • 高性能可积分可调电感器包括一个“初级”线圈和一个“驱动”线圈,它们分别靠近彼此并且同时由主电流和驱动电流驱动。 驱动电流导致初级线圈中的电感的相互分量随着两个电流之间的相位和幅度关系而变化。 控制这些关系以精确地建立初级线圈的阻抗,允许电感通过简单地相位和幅度关系改变来“调谐”以提供期望的电感或电阻。 已经证明了在大约2:1的范围内可调谐的电感值和接近2000的Q值。 通过适当地设定相位和幅度关系,初级线圈也可以作为相对较大的积分电容而工作。 可调谐电感器可以用标准CMOS工艺或许多其它处理技术中的任何一种制造,并因此被集成到需要高度集成的实现的模拟电路的主机中。
    • 2. 发明授权
    • Linear tunable Gm-C integrator
    • 线性可调Gm-C积分器
    • US5661432A
    • 1997-08-26
    • US588345
    • 1996-01-18
    • Zhong Yuan ChangDidier Rene Haspeslagh
    • Zhong Yuan ChangDidier Rene Haspeslagh
    • H03H11/04H03J3/16H03F3/45H03F3/191
    • H03J3/16H03H11/0422
    • A time-continuous tunable Gm-C integrator including a "super Gm" differential input stage (O1; MI1/O2, MI2) and using linear and constant degeneration resistors (R1/R2) for obtaining the most optimal linear input-voltage to output-current conversion is tunable in a time-continuous manner. The integrator is provided with three tuning CMOS transistors (MU1, MU2, MU3) controlling the integrating currents flowing between the input stages and from the input stages towards the outputs (OP/ON). By a suitable control of the tuning transistors and owing to the fact that the voltage swing across the latter is small, it is possible to obtain a perfectly linear transconductance (Gm) characteristic over the whole operating range of the integrator.
    • 包括“超级Gm”差分输入级(O1; MI1 / O2,MI2)和使用线性和常数退化电阻(R1 / R2)的时间连续可调Gm-C积分器,用于获得最佳线性输入电压输出 电流转换可以以时间连续的方式调整。 积分器配有三个调谐CMOS晶体管(MU1,MU2,MU3),用于控制输入级和输入级之间向输出(OP / ON)流动的积分电流。 通过对调谐晶体管的适当控制,并且由于跨越后者的电压摆幅小的事实,可以在积分器的整个工作范围内获得完美的线性跨导(Gm)特性。
    • 3. 发明授权
    • Strip transmission line having a tunable electric length
    • 带状传输线具有可调电长度
    • US5510756A
    • 1996-04-23
    • US321522
    • 1994-10-12
    • Wolfgang ArnoldErich PivitWolfgang WeiserSeigbert Martin
    • Wolfgang ArnoldErich PivitWolfgang WeiserSeigbert Martin
    • H01P1/215H01P1/18H01P1/19H01P3/02H01P9/00H03J3/16H01P7/06
    • H03J3/16H01P1/19
    • A strip transmission line for guiding a wave therein, including a strip-shaped inner conductor; an outer conductor surrounding the inner conductor with a clearance; a ferrite coating carried on at least one of the conductors; and at least one throughgoing slot provided in the inner and outer conductors for dividing the inner and outer conductors into at least two inner conductor sections and at least two outer conductor sections. The slots extend in a direction of wave propagation, whereby a variable current applied to the inner and outer conductors flows in one direction in one of the inner and outer conductor sections and returns in an opposite direction in another of the inner and outer conductor sections for generating a variable premagnetizing field within the strip transmission line between the inner and outer conductors to vary an electric length of the strip transmission line.
    • 用于在其中引导波的带状传输线,包括带状内部导体; 围绕内部导体的外部导体具有间隙; 在至少一个导体上承载的铁氧体涂层; 以及设置在内导体和外导体中的至少一个通孔,用于将内导体和外导体分成至少两个内导体部分和至少两个外导体部分。 所述槽沿波传播方向延伸,由此施加到内导体和外导体的一个方向上的内电导体和外导体的可变电流在内导体部和外导体部中的一个中沿一个方向流动,并且在另一个内导体部和外导体部中以相反的方向返回, 在内导体和外导体之间的带状传输线内产生可变的预磁化场,以改变带传输线的电长度。
    • 4. 发明授权
    • Integrated barium-ferrite tuned mixer for spectrum analysis to 60 GHz
    • 集成钡铁氧体调谐混频器,用于频谱分析至60 GHz
    • US5465417A
    • 1995-11-07
    • US168886
    • 1993-12-16
    • Hassan Tanbakuchi
    • Hassan Tanbakuchi
    • G01R23/173H01P1/218H03D7/14H03J3/16H04B1/26
    • H03J3/16H03D7/1408
    • A routing barium-ferrite tuned resonator filter integrated with an image-enhanced, single-balanced mixer. The barium-ferrite tuned resonator filter is preferably a four-sphere barium-ferrite tuned preselector which is integrated with a harmonically mixed, image-enhanced, single-balanced mixer to provide a high level of dynamic range in a harmonically mixed front end. An input resonator of the preselector in combination with a dual PIN diode switch switches low-frequency input signals (e.g., 0 to 26.5 GHz) to a low-frequency output. For high-frequency input signals (e.g., 26.5 to 50 GHz), the four-sphere barium-ferrite tuned preselector is combined with the image-enhanced, single-balanced mixer which incorporates a GaAs monolithic diode bridge integrated circuit. This provides a front end component of a high-performance portable spectrum analyzer.
    • 与图像增强型单平衡混频器集成的路由钡铁氧体谐振滤波器。 钡 - 铁氧体调谐谐振滤波器优选为四球钡铁氧体调谐预选器,其与谐波混合的图像增强型单平衡混频器集成,以在谐波混合前端中提供高水平的动态范围。 预选器的输入谐振器与双PIN二极管开关组合将低频输入信号(例如,0至26.5GHz)切换到低频输出。 对于高频输入信号(例如26.5至50 GHz),四球钡铁氧体调谐预选器与包含GaAs单片二极管桥式集成电路的图像增强型单平衡混频器相结合。 这提供了高性能便携式频谱分析仪的前端部件。