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    Wireless power transfer
    72.
    发明授权
    Wireless power transfer 有权

    公开(公告)号：US10090714B2

    公开(公告)日：2018-10-02

    申请号：US14830692

    申请日：2015-08-19

    Applicant: California Institute of Technology

    Inventor： Florian Bohn ,  Behrooz Abiri ,  Seyed Ali Hajimiri

    IPC: H02J50/20 ,  H02J7/02 ,  H04B5/00 ,  H02J50/40

    Abstract: A method of generating a DC power from incident RF waves, includes, in part, measuring the amount of power being received by a device generating the DC power, and controlling the phases of the RF waves being transmitted by a multitude of RF transmitters in accordance with the measured power. A programmable test load is optionally used at the device to measure the received power. The device optionally includes, an antenna, an RF-to-DC converter to generate the DC power, an impedance matching/transformation circuit, and an RF load/matching circuit.

    Directional optical receiver
    73.
    发明授权
    Directional optical receiver 有权

    公开(公告)号：US10061125B2

    公开(公告)日：2018-08-28

    申请号：US14703737

    申请日：2015-05-04

    Applicant: California Institute of Technology

    Inventor： Seyed Ali Hajimiri ,  Behrooz Abiri

    IPC: H04N3/14 ,  H04N5/335 ,  G02F1/03 ,  G02F1/07 ,  G02F1/23 ,  G02F1/01 ,  G02B27/00 ,  G02B5/18 ,  H04N5/378 ,  H04B10/116

    CPC classification number: G02B27/0087 ,  G02B5/1842 ,  H04B10/116 ,  H04N5/378

    Abstract: An optical phased array (OPA) receiver selectively detects, measures and differentiates between the amplitudes and directions of signals received from different directions. Because the OPA changes the direction that it looks toward electronically and without the use of any mechanical movements, the OPA is fast, has an enhanced sensitivity, and can be used in a wide variety applications, such as lens-free imaging systems. The OPA is adapted to dynamically control the array of optical elements and focus on the area of interest. The OPA achieves a higher numerical aperture compared to imaging systems that use conventional lens, thereby effectively maintaining a relatively large field of view and collection area concurrently. The OPA may be readily scaled by increasing its array size. Furthermore, because the OPA is relatively flat, it is ideally suited for small form factor applications such as cell phones and tablets.

    Self-equalizing photo detector
    74.
    发明授权
    Self-equalizing photo detector 有权

    公开(公告)号：US09831957B2

    公开(公告)日：2017-11-28

    申请号：US14716735

    申请日：2015-05-19

    Applicant: California Institute of Technology

    Inventor： Behrooz Abiri ,  Seyed Ali Hajimiri ,  Firooz Aflatouni ,  Andy Zhou

    IPC: G02B6/26 ,  H04B10/67 ,  G02B6/28 ,  G02B6/293

    CPC classification number: H04B10/671 ,  G02B6/2861 ,  G02B6/2935 ,  G02B6/29352

    Abstract: A self-equalizing photo-detector (SEPD) includes, in part, a multitude of optical splitters and photo detectors, and at least one optical delay element. The first optical splitter splits an optical signal into second and third optical signals. The optical delay element delays the second optical signal to generate a fourth optical signal. The second optical splitter splits a signal representative of the fourth optical signal to generate fifth and sixth optical signals. The first photo detector receives the third optical signal via a first optical path, has an anode terminal coupled to an output terminal of the detector and a cathode terminal coupled to a first supply voltage. The second photo detector receives the sixth optical signal via a second optical path, has an anode terminal coupled to a second supply voltage and a cathode terminal coupled to the output terminal of the detector.

    Amplification-free electro-optical oscillator
    75.
    发明授权
    Amplification-free electro-optical oscillator 有权

    公开(公告)号：US09768873B2

    公开(公告)日：2017-09-19

    申请号：US14489393

    申请日：2014-09-17

    Applicant: California Institute of Technology

    Inventor： Seyed Ali Hajimiri ,  Firooz Aflatouni ,  Behrooz Abiri

    IPC: H04B10/50 ,  H04B10/90

    CPC classification number: H04B10/50577 ,  H04B10/50 ,  H04B10/90 ,  H04B2210/006

    Abstract: An electro-optical oscillator includes, in part, a modulator, a signal splitter, N photodiodes with N being an integer greater than one, a signal combiner, and a filter. The modulator modulates an optical signal in accordance with a feedback signal. The splitter splits the modulated optical signal into N optical signals each delivered to a different one of N photo-diodes. Each of the N photo-diodes converts the optical signal it receives to a current signal. The signal combiner combines the N current signals received from the N photo-diodes to generate a combined current signal. The filter filters the combined current signal and generates the feedback signal. The electro-optical oscillator optionally includes, in part, N variable optical gain/attenuation components each amplifying/attenuating a different one of the N optical signals generated by the splitter.

    Systems and Methods for Controlling Supply Voltages of Stacked Power Amplifiers
    76.
    发明申请
    Systems and Methods for Controlling Supply Voltages of Stacked Power Amplifiers 审中-公开
    用于控制堆叠功率放大器电源电压的系统和方法

    公开(公告)号：US20170047463A1

    公开(公告)日：2017-02-16

    申请号：US15233830

    申请日：2016-08-10

    Applicant: California Institute of Technology

    Inventor： Seyed Ali Hajimiri ,  Florian Bohn ,  Behrooz Abiri

    IPC: H01L31/042 ,  H03F3/19 ,  H02S40/30 ,  H03F3/21

    Abstract: Many embodiments of the invention include stacked power amplifier configurations that include control circuitry for sensing the operational characteristics of the power amplifiers and adjusting the current drawn by one or more of the power amplifiers to prevent any of the power amplifiers from experiencing over voltage stresses and/or to increase the operational efficiency of the power amplifiers.

    Abstract translation: 本发明的许多实施例包括堆叠的功率放大器配置，其包括用于感测功率放大器的操作特性的控制电路，并且调整由一个或多个功率放大器吸取的电流，以防止任何功率放大器经历过压应力和/ 或提高功率放大器的运行效率。

    Integrated Light Source Independent Linewidth Reduction of Lasers Using Electro-Optical Feedback Techniques
    78.
    发明申请
    Integrated Light Source Independent Linewidth Reduction of Lasers Using Electro-Optical Feedback Techniques 有权
    使用电光反馈技术的激光器的集成光源独立线宽降低

    公开(公告)号：US20140140652A1

    公开(公告)日：2014-05-22

    申请号：US13863315

    申请日：2013-04-15

    Applicant: California Institute of Technology

    Inventor： Firooz Aflatouni ,  Behrooz Abiri ,  Seyed Ali Hajimiri

    IPC: G02F1/01

    CPC classification number: G02F1/011 ,  H01S3/005 ,  H01S3/0085 ,  H01S3/1307 ,  H01S2301/02

    Abstract: An integrated optical linewidth reduction system includes a phase modulator adapted to modulate the phase of an incoming optical signal in response to a feedback control signal defined by a first electrical signal. The phase modulator is further adapted to generate a first optical signal travelling through a first optical path. The first electrical signal is representative of a phase noise of the first optical signal. An optical linewidth of the first optical signal is less than an optical linewidth of the incoming optical signal.

    Abstract translation: 集成光学线宽减小系统包括相位调制器，其适于响应于由第一电信号限定的反馈控制信号来调制输入光信号的相位。 相位调制器还适于产生行进通过第一光路的第一光信号。 第一电信号表示第一光信号的相位噪声。 第一光信号的光线宽小于输入光信号的光线宽。

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