会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 65. 发明授权
    • Group III nitride semiconductor frequency multiplier
    • III族氮化物半导体倍频器
    • US09117937B2
    • 2015-08-25
    • US14338598
    • 2014-07-23
    • U.S. Army Research Laboratory
    • Pankaj B. ShahH. Alfred Hung
    • H01L31/0256H01L29/93H01L29/20H01L29/872H01L29/205H01L29/16H01L29/22H01L29/66
    • H01L29/93H01L29/1608H01L29/2003H01L29/205H01L29/22H01L29/66174H01L29/872
    • A varactor comprising two Schottky diodes, each diode comprising a substrate and a plurality of layers formed on the substrate including at least one GaN layer and at least one semi-insulating material layer formed of a material with an energy gap greater than 3.5 and free carrier mobility less than 300 cm2/V-s; the Schottky diodes having cathodes adapted to be connected to an AC voltage input and being configured so that as the AC voltage applied to the cathodes increases the capacitance decreases nonlinearly, the nonlinear transition from high capacitance to low capacitance being adjustable by utilizing the intrinsic carrier concentration of the semi-insulating layer to obtain an optimal nonlinear transition for the predetermined AC voltage applied to the cathodes. A method of making a varactor comprising computer modeling to produce capacitance-voltage curves, modifying at least one semi-insulating region, and modeling power input/output efficiency for a predetermined input signal.
    • 一种包括两个肖特基二极管的变容二极管,每个二极管包括衬底和形成在衬底上的多个层,包括至少一个GaN层和由能隙大于3.5的材料形成的至少一个半绝缘材料层和自由载体 迁移率小于300 cm2 / Vs; 肖特基二极管具有适于连接到AC电压输入的阴极并且被配置为使得随着施加到阴极的AC电压增加,电容非线性减小,从高电容到低电容的非线性转变可通过利用本征载流子浓度 以获得施加到阴极的预定AC电压的最佳非线性转变。 一种制造变容二极管的方法,包括计算机建模以产生电容 - 电压曲线,修改至少一个半绝缘区域,以及为预定输入信号建模功率输入/输出效率。
    • 68. 发明授权
    • Varactor shunt switches with parallel capacitor architecture
    • 具有并联电容架构的变压器并联开关
    • US09000866B2
    • 2015-04-07
    • US13533310
    • 2012-06-26
    • Guru Subramanyam
    • Guru Subramanyam
    • H01L29/93H01L27/08H01P1/15H01P9/00H01P3/00
    • H01P1/15H01L27/0808H01P3/003
    • A parallel capacitor varactor shunt switch device may include a shunt layer, a coplanar waveguide (CPW) layer, and a tunable thin film dielectric layer that is interposed between the shunt layer and the CPW layer. The tunable thin film dielectric layer electrically isolates the shunt layer from the CPW layer. The shunt layer includes a plurality of parallel shunt lines. The CPW layer includes a CPW signal transmission line with two CPW ground lines parallel to the CPW signal transmission line. A plurality of varactor areas equal in number to the plurality of parallel shunt lines are defined in the CPW signal transmission line, each varactor area corresponding to an overlap of the CPW signal transmission line with a respective shunt line and each respective parallel shunt line and its corresponding varactor area defines a capacitor.
    • 并联电容器变容二极管分流开关装置可以包括分流层,共面波导(CPW)层和介于分流层和CPW层之间的可调谐薄膜电介质层。 可调薄膜电介质层将分流层与CPW层电隔离。 并联层包括多个并联分流线。 CPW层包括具有与CPW信号传输线并联的两个CPW接地线的CPW信号传输线。 在CPW信号传输线中定义多个与多个并联分流线相等数量的变容二极管区域,每个变容二极管区域对应于CPW信号传输线与相应的分流线和每个相应的并联分流线的重叠, 相应的变容二极管区域定义了一个电容器。
    • 69. 发明授权
    • Digital semiconductor variable capacitor
    • 数字半导体可变电容器
    • US08963289B2
    • 2015-02-24
    • US13889317
    • 2013-05-07
    • Fabio Alessio MarinoPaolo Menegoli
    • Fabio Alessio MarinoPaolo Menegoli
    • H01L29/93H01L29/66
    • H01L29/93H01L29/66174H01L29/66189H01L29/94
    • A novel semiconductor variable capacitor is presented. The semiconductor structure is simple and is based on a semiconductor variable capacitor with MOS compatible structure suitable for integrated circuits, which has at least three terminals, one of which is used to modulate the capacitance value between the other two terminals of the device, by increasing or decreasing its DC voltage with respect to one of the main terminals of the device. Furthermore, the present invention decouples the AC signal and the DC control voltage preventing distortion of the RF signal. The present invention describes a controllable capacitor whose capacitance value is not necessarily linear with its control voltage, but although possibly abrupt in its characteristic, is utilized to manufacture a semiconductor variable capacitor with digital control to improve its noise and linearity performance while maintaining high quality factor.
    • 提出了一种新型的半导体可变电容器。 半导体结构简单,并且基于具有MOS兼容结构的半导体可变电容器,其适用于集成电路,其具有至少三个端子,其中一个用于通过增加器件的另外两个端子来调制电容值 或者相对于设备的主端子之一降低其直流电压。 此外,本发明解耦AC信号和DC控制电压,防止RF信号的失真。 本发明描述了一种可控制的电容器,其电容值不一定与其控制电压成线性关系,但是尽管其特性可能突然地被用于制造具有数字控制的半导体可变电容器,以改善其噪声和线性性能,同时保持高品质因数 。