SPOOFING DETECTION AND ANTI-JAM MITIGATION FOR GPS ANTENNAS

    公开(公告)号:US20180224557A1

    公开(公告)日:2018-08-09

    申请号:US15507860

    申请日:2015-09-04

    Abstract: There is provided an apparatus comprising an antenna (105) configured to receive a signal from a global navigation satellite system, wherein the antenna includes a first feed and a second feed; a hybrid coupler (110) including a first hybrid input, a second hybrid input, a first hybrid output, a second hybrid output, and wherein the first hybrid output is shifted in phase by 90 degrees relative to the second hybrid output; a variable phase shifter (150) including a shifter input and a shifter output, hybrid output; and a combiner (155) including a first combiner input, a second combiner input, and a combiner output, wherein the first combiner input is coupled to the shifter output, and the second combiner input is coupled to the second hybrid output, and wherein the combiner output is provided to detection circuitry (197).

    Hybrid Tissue Engineering Constructs

    公开(公告)号:US20250041487A1

    公开(公告)日:2025-02-06

    申请号:US18717323

    申请日:2022-12-09

    Abstract: Tissue engineering constructs and the method of making the constructs are provided. The constructs distinguish a scaffold with a surface and a treated surface area for increased surface area. A hydrophilic hydrogel network is physically cross-linked via charged polymers and salt-ions onto the treated surface area. Biologies is trapped and thereby hosted within the physically cross-linked hydrogel network. Covalently reactive macromonomers are chemically cross-linked within the physically cross-linked hydrophilic hydrogel network to strengthen the physically cross-linked hydrophilic hydrogel network itself and to the scaffold. The constructs enable delivery of therapeutics including cells and/or biomolecules along with a structural support and a defined geometry for applications in regenerative medicine.

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