SYSTEM AND METHODS FOR CLOSED LOOP DOPPLER TRACKING IN INTER-SATELLITE LINKS

    公开(公告)号:US20240137115A1

    公开(公告)日:2024-04-25

    申请号:US17972965

    申请日:2022-10-24

    CPC classification number: H04B7/1855 H04B7/18513 H04B7/18521 H04B7/18543

    Abstract: An apparatus can include transceiver circuitry to receive an input signal from a target apparatus. The apparatus can further include a processing circuitry to determine position information of a source object and a target object. Based on the position information, the processing circuitry can calculate a relative velocity and determine a Doppler shift or carrier frequency offset in the input signal based on the relative velocity. The processing circuitry can adjust a local oscillator frequency based on a Doppler measured using the position information in an initial link acquisition phase. The processing circuitry can track the Doppler continuously over a range of tens of gigahertz accounting for Doppler phase ambiguities, and correct for a tracked Doppler shift by partially adjusting a local oscillator frequency and by correcting a residual Doppler shift digitally.

    Bidirectional optical grating coupler with multiple light paths for testing photonics devices

    公开(公告)号:US12158625B2

    公开(公告)日:2024-12-03

    申请号:US17132967

    申请日:2020-12-23

    Abstract: Embodiments described herein may be related to apparatuses, processes, and techniques related to a bidirectional optical grating coupler that may be used for testing. A photonic apparatus includes a first layer with electro-optical circuitry that is optically coupled with a bidirectional optical grating coupler. A second layer is physically coupled with a first side of the first layer and includes a first light path to optically coupled with the bidirectional optical grating coupler. A third layer is physically coupled with a second side of the first layer opposite the first side of the first layer, and includes a second light path that optically couples with the bidirectional grating coupler. Operational testing of the electro-optical circuitry is based in part on light received or transmitted through the second light path. Other embodiments may be described and/or claimed.

    SYSTEM AND METHODS FOR CLOSED LOOP DOPPLER TRACKING IN INTER-SATELLITE LINKS

    公开(公告)号:US20240235665A9

    公开(公告)日:2024-07-11

    申请号:US17972965

    申请日:2022-10-25

    CPC classification number: H04B7/1855 H04B7/18513 H04B7/18521 H04B7/18543

    Abstract: An apparatus can include transceiver circuitry to receive an input signal from a target apparatus. The apparatus can further include a processing circuitry to determine position information of a source object and a target object. Based on the position information, the processing circuitry can calculate a relative velocity and determine a Doppler shift or carrier frequency offset in the input signal based on the relative velocity. The processing circuitry can adjust a local oscillator frequency based on a Doppler measured using the position information in an initial link acquisition phase. The processing circuitry can track the Doppler continuously over a range of tens of gigahertz accounting for Doppler phase ambiguities, and correct for a tracked Doppler shift by partially adjusting a local oscillator frequency and by correcting a residual Doppler shift digitally.

    FIELD-CONFIGURABLE OPTICAL SWITCH IMPLEMENTATIONS WITHIN MULTI-CHIP PACKAGES

    公开(公告)号:US20220413216A1

    公开(公告)日:2022-12-29

    申请号:US17359374

    申请日:2021-06-25

    Abstract: An integrated circuit (IC) package comprising an optical die comprising a configurable optical switch. The configurable optical switch comprises an optical switch operably coupled to one or more optical transceivers. An optical connector comprises at least one exo-package optical port. The at least one exo-package optical port is operably coupled to the configurable optical switch. The configurable optical switch is to pass an optical signal on the at least one of the one or more exo-package ports to at least one of the one or more optical transceivers, and an IC die comprising electronic circuitry is operably coupled to the one or more optical transceivers.

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