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    • 1. 发明授权
    • Method and apparatus for an optically clocked optoelectronic track and hold device
    • 用于光时钟光电跟踪和保持装置的方法和装置
    • US07307266B1
    • 2007-12-11
    • US10730713
    • 2003-11-26
    • Chen-Kuo SunRichard C. EdenChing-Ten ChangDonald J. Albares
    • Chen-Kuo SunRichard C. EdenChing-Ten ChangDonald J. Albares
    • G02B27/00G02B6/28G01J1/04G11C27/02H03K17/74H03M1/00
    • G11C27/02G11C27/024G11C27/026H03K17/04H03K17/16H03K17/74H03K17/78
    • A method and apparatus for optically clocked optoelectronic track and hold (“OCOETH”) device. The OCOETH device includes a diode bridge, input node, at least two current sources and at least two photodetectors. The input node is operatively coupled to the diode bridge and can receive an analog input signal. The at least two current sources are operatively coupled to the diode bridge and can forward bias the diode bridge. The at least two photodetectors are operatively coupled to the diode bridge and can receive an optical input clocking signal, and can reverse bias and forward bias the diode bridge in response to the optical input clocking signal. The hold capacitor is operatively coupled to the diode bridge and can track the analog input signal when the diode bridge is forward biased, and can hold the analog input signal when the diode bridge switches from forward biased to reverse biased.
    • 一种用于光时钟光电跟踪和保持(“OCOETH”)设备的方法和装置。 OCOETH装置包括二极管桥,输入节点,至少两个电流源和至少两个光电检测器。 输入节点可操作地耦合到二极管电桥并且可以接收模拟输入信号。 至少两个电流源可操作地耦合到二极管桥并且可以对二极管桥进行正向偏置。 所述至少两个光电检测器可操作地耦合到二极管电桥并且可以接收光输入时钟信号,并且可以响应于光输入时钟信号而反向偏置和向前偏置二极管桥。 保持电容器可操作地耦合到二极管电桥,并且可以在二极管电桥正向偏置时跟踪模拟输入信号,并且当二极管电桥从正向偏置切换到反向偏置时,可以保持模拟输入信号。
    • 4. 发明授权
    • Narrow-band inverted homo-heterojunction avalanche photodiode
    • 窄带反相同异质结雪崩光电二极管
    • US4110778A
    • 1978-08-29
    • US808496
    • 1977-06-21
    • Richard C. EdenKenichi Nakano
    • Richard C. EdenKenichi Nakano
    • H01L31/107H01L27/14
    • H01L31/107
    • A narrow-band, inverted homo-heterojunction avalanche photodiode, configured in the shape of a mesa situated upon a substrate which is transparent to selected light energy wavelengths. The diode is inverted for operation such that the incoming light energy enters the substrate side, passes through a wavelength selective buffer layer and is absorbed upon entering the succeeding, active region. Avalanche gain is attained by drift from the area of absorption to the high field p-n homo-heterojunction located immediately thereafter. The device exhibits low levels of noise during operation because absorption is occurring in a low field region and because the ionization and breakdown noise associated with lattice mismatches is avoided through the formation of the p-n homo-heterojunction in one continuous growth process. Appropriate passivation of the mesa walls inhibits surface leakage and breakdown effects.
    • 窄带,反相同异质结雪崩光电二极管,其被配置为位于对选择的光能波长透明的衬底上的台面形状。 二极管被反相操作,使得入射光能进入衬底侧,通过波长选择缓冲层,并在进入后续有源区时被吸收。 通过从吸收区域漂移到紧邻的高场p-n同异质结获得雪崩增益。 该装置在操作期间表现出低水平的噪声,因为在低场区域中发生吸收,并且由于通过在一个连续生长过程中形成p-n同异质结来避免与晶格失配相关的电离和击穿噪声。 台面壁的适当钝化可以抑制表面渗漏和击穿效应。
    • 6. 发明授权
    • Method and device for precise geolocation of low-power, broadband, amplitude-modulated signals
    • 低功耗,宽带,幅度调制信号精确定位的方法和装置
    • US06759983B2
    • 2004-07-06
    • US10107811
    • 2002-03-28
    • Richard C. Eden
    • Richard C. Eden
    • G01S302
    • G01S5/04G01S3/36G01S7/021
    • The invention relates to methods and devices for precise geolocation of low-power, broadband, amplitude-modulated rf and microwave signals having poor coherency. The invention provides a basis for dramatic improvements in RF receiver technology, offering much higher sensitivity, very strong rejection of unintended signals, and novel direction finding techniques. When mounted on an airborne surveillance platform, the invention can detect and geolocate weak, broadband, incoherent RF and/or microwave signals. Embodiments of the invention are implemented by dual channel receivers (heterodyne or tuned-RF) that use crystal detection and Fast Fourier Transform (FFT) analysis for geolocation. Geolocation is accomplished using a subsystem of phased arrays and an angle of arrival technique.
    • 本发明涉及具有差相干性的低功率,宽带,幅度调制rf和微波信号的精确地理定位的方法和装置。 本发明为RF接收机技术的显着改进提供了基础,提供了更高的灵敏度,非常强的拒绝非预期信号以及新颖的方向发现技术。 当安装在机载监视平台上时,本发明可以检测和定位弱,宽带,非相干RF和/或微波信号。 本发明的实施例由对待地理定位使用晶体检测和快速傅立叶变换(FFT)分析的双通道接收器(外差或调谐RF)来实现。 使用相控阵列子系统和到达角技术实现地理定位。
    • 8. 发明授权
    • Low power, high speed random access memory circuit
    • 低功耗,高速随机存取电路
    • US4575821A
    • 1986-03-11
    • US493093
    • 1983-05-09
    • Richard C. EdenGeorge R. Kaelin
    • Richard C. EdenGeorge R. Kaelin
    • G11C11/412G11C11/418G11C11/419G11C7/00G11C11/34
    • G11C11/418G11C11/412G11C11/419
    • A random access memory circuit for use with positive and negative supply voltages, a read enable line, an output line, and write "1" and "0" lines includes first, second, third, and fourth level shifting diodes. A first input isolation diode is connected between the write "1" line and the first level shifting diode. A second input isolation diode is connected between the write "0" line and the cathode of the third level shifting diode. The drain of a first write FET is connected to the anode of the third diode, the source is connected to the read enable line, and the gate is connected to the cathode of the second level shifting diode. A second write FET has its drain connected to the anode of the first level shifting diode, its source connected to the read enable line, and its gate connected to the cathode of the fourth diode. An output buffer FET is connected by its source to the read enable line, by its gate to the cathode of the fourth diode. An output isolation diode is connected between the drain of the output buffer FET and the output line.
    • 用于正电源电压和负电源电压的随机存取存储器电路,读使能线,输出线和写“1”和“0”线包括第一,第二,第三和第四电平移位二极管。 第一输入隔离二极管连接在写“1”线和第一电平移位二极管之间。 第二输入隔离二极管连接在写“0”线和第三电平转换二极管的阴极之间。 第一写FET的漏极连接到第三二极管的阳极,源极连接到读使能线,栅极连接到第二电平移位二极管的阴极。 第二写FET的漏极连接到第一电平移位二极管的阳极,其源极连接到读使能线,其栅极连接到第四二极管的阴极。 输出缓冲FET由其源极连接到读使能线,其栅极连接到第四二极管的阴极。 输出隔离二极管连接在输出缓冲FET的漏极和输出线之间。
    • 9. 发明授权
    • Schottky diode FET logic integrated circuit
    • 肖特基二极管FET逻辑集成电路
    • US4300064A
    • 1981-11-10
    • US11266
    • 1979-02-12
    • Richard C. Eden
    • Richard C. Eden
    • H03K19/0956H03K19/094H03K19/017H03K19/20
    • H03K19/0956Y10S331/03
    • A logic circuit is provided which uses Schottky barrier switching diodes to perform the "OR" logic function on logic inputs. The outputs from the switching diodes control the gate of a field-effect transistor (FET) which provides logic inversion and gain. The source of the FET is grounded and its drain provides the output of the logic circuit. Bias current for the switching diodes and gate turn-off current for the FET are provided by a pull down, and a pull up is provided to operate the FET. In a second embodiment, two separate groups of switching diodes control separate gates of a dual-gated FET to provide a two-level "OR/NAND" logic circuit. In a third embodiment, the outputs from a pair of two-level logic circuits are joined to provide a three-level "OR/NAND/WIRED-AND" logic circuit.
    • 提供了使用肖特基势垒开关二极管在逻辑输入上执行“或”逻辑功能的逻辑电路。 开关二极管的输出控制提供逻辑反相和增益的场效应晶体管(FET)的栅极。 FET的源极接地,其漏极提供逻辑电路的输出。 开关二极管的偏置电流和FET的栅极截止电流由下拉提供,并提供上拉来操作FET。 在第二实施例中,两组独立的开关二极管控制双门控FET的分离栅极以提供两级“或”逻辑电路。 在第三实施例中,来自一对两电平逻辑电路的输出被连接以提供三电平“或/非/有线和”逻辑电路。