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    • 5. 发明授权
    • 80 nanometer diameter resonant tunneling diode with improved peak-to-valley ratio
    • 80纳米直径的谐振隧穿二极管,具有改善的峰谷比
    • US07514708B2
    • 2009-04-07
    • US10420346
    • 2003-04-22
    • Stephen Thomas, IIIKen ElliottDavid H. Chow
    • Stephen Thomas, IIIKen ElliottDavid H. Chow
    • H01L29/06
    • B82Y10/00H01L29/66151H01L29/882Y10S977/712Y10S977/888
    • A sub-micron, on the order of 80-nanometer diameter, resonant tunneling diode having a peak-to-valley ratio of approximately 5.1 to 1, and a method for its manufacture. The invention is unique in that its performance characteristics are unmatched in comparably sized resonant tunneling diodes. Further, the polyimide passivation and planarization methodology provides unexpected processing advantages with respect to application in the fabrication of resonant tunneling diodes. The invention includes a substrate 100 that serves as a foundation for bottom contact layers 102 and a polyimide 700 coating. An ohmic metal contact 300 and emitter metal contact 400 protrude above the polyimide 700 coating exposing the ohmic metal contact 300 and emitter metal contact 400. The contacts are capped with an etch-resistant coating 710 thus allowing for the polyimide etch, and other etching processes without adversely affecting the contacts.
    • 约80纳米直径的亚微米,具有约5.1比1的峰谷比的共振隧道二极管及其制造方法。 本发明是独特的,因为其性能特性在相当大的谐振隧道二极管中是无法比拟的。 此外,聚酰亚胺钝化和平面化方法在制造谐振隧道二极管方面提供了意想不到的处理优点。 本发明包括用作底部接触层102和聚酰亚胺700涂层的基础的基底100。 欧姆金属触点300和发射极金属触点400突出在暴露欧姆金属触点300和发射极金属触点400的聚酰亚胺700涂层之上。触点被抗蚀涂层710覆盖,从而允许聚酰亚胺蚀刻和其它蚀刻工艺 而不会不利地影响触点。
    • 7. 发明授权
    • Time delay apparatus and method of using same
    • 时延装置及其使用方法
    • US07667515B1
    • 2010-02-23
    • US12156266
    • 2008-05-31
    • Ken ElliottSusan MortonMark Rodwell
    • Ken ElliottSusan MortonMark Rodwell
    • H03H11/26
    • H03K17/603H03K5/131H03K17/6264H03K2005/00065H03K2005/00176
    • Disclosed is a time delay generator 200 apparatus and method. The apparatus includes a time delay gate 212, a mixer 216 (a Gilbert cell circuit), and a current digital to analog converter 206. The mixer 216, comprised of first and second transistor differential pairs 218 and 220, receives an analog input signal 202 without a delay as well as a delayed input signal 210 produced by the time gate delay. The digital to analog converter regulates the relative current flow between a first control signal 232 and a second control signal 238, effectively altering the mixing of the undelayed input signal 208 and the delayed input signal 210 to generate a delayed output signal 214 with a time or phase delay substantially equal to the temporal delay represented by the digital signal input 204. The time delay generator exhibits reduced phase noise and a linear time delay response.
    • 公开了一种时间延迟发生器200的装置和方法。 该装置包括时间延迟门212,混合器216(吉尔伯特单元电路)和当前数模转换器206.由第一和第二晶体管差分对218和220组成的混频器216接收模拟输入信号202 没有延迟,以及由时间门延迟产生的延迟输入信号210。 数模转换器调节第一控制信号232和第二控制信号238之间的相对电流,有效地改变未延迟的输入信号208和延迟输入信号210的混合,以产生具有时间的延迟的输出信号214,或者 相位延迟基本上等于由数字信号输入204表示的时间延迟。时间延迟发生器表现出降低的相位噪声和线性时间延迟响应。
    • 8. 发明授权
    • Time delay apparatus and method of using same
    • 时延装置及其使用方法
    • US07446584B2
    • 2008-11-04
    • US10256099
    • 2002-09-25
    • Ken ElliottSusan MortonMark Rodwell
    • Ken ElliottSusan MortonMark Rodwell
    • H03H11/26
    • H03K17/603H03K5/131H03K17/6264H03K2005/00065H03K2005/00176
    • Disclosed is a time delay generator 200 apparatus and method. The apparatus includes a time delay gate 212, a mixer 216 (a Gilbert cell circuit), and a current digital to analog converter 206. The mixer 216, comprised of first and second transistor differential pairs 218 and 220, receives an analog input signal 202 without a delay as well as a delayed input signal 210 produced by the time gate delay. The digital to analog converter regulates the relative current flow between a first control signal 232 and a second control signal 238, effectively altering the mixing of the undelayed input signal 208 and the delayed input signal 210 to generate a delayed output signal 214 with a time or phase delay substantially equal to the temporal delay represented by the digital signal input 204. The time delay generator exhibits reduced phase noise and a linear time delay response.
    • 公开了一种时间延迟发生器200的装置和方法。 该装置包括时间延迟门212,混频器216(吉尔伯特单元电路)和当前的数模转换器206。 由第一和第二晶体管差分对218和220组成的混频器216接收模拟输入信号202而没有延迟,以及由时间门延迟产生的延迟的输入信号210。 数模转换器调节第一控制信号232和第二控制信号238之间的相对电流,有效地改变未延迟的输入信号208和延迟输入信号210的混合,以产生具有时间的延迟的输出信号214或 相位延迟基本上等于由数字信号输入204表示的时间延迟。 延时发生器具有降低的相位噪声和线性时间延迟响应。