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    ELECTRICALLY TUNABLE RADIO-FREQUENCY COMPONENTS AND CIRCUITS
    1.
    发明申请
    ELECTRICALLY TUNABLE RADIO-FREQUENCY COMPONENTS AND CIRCUITS 有权

    公开(公告)号：US20210075079A1

    公开(公告)日：2021-03-11

    申请号：US16562871

    申请日：2019-09-06

    Applicant: Nokia Technologies Oy

    Inventor： Dirk Wiegner ,  Wolfgang Templ ,  Senad Bulja ,  Rose F. Kopf

    IPC: H01P1/18 ,  H01P3/08 ,  H01P1/20

    Abstract: An electrically controllable RF-circuit element that includes at least one layer of an electrochromic material sandwiched between two corresponding layers of a solid-electrolyte material and placed adjacent and along a length of RF transmission line. In one example embodiment, the electrically controllable RF-circuit element operates as a tunable band-stop (e.g., notch) filter whose stop band can be spectrally moved by changing one or more dc-bias voltages applied across the corresponding layer stack(s). In another example embodiment, the elecyrically controllable RF-circuit element operates as a tunable phase shifter whose phase-shifting characteristics can be changed by changing one or more dc-bias voltages applied across the corresponding layer stack(s).

    Radio-frequency switching apparatus
    2.
    发明授权
    Radio-frequency switching apparatus 有权

    公开(公告)号：US11201634B2

    公开(公告)日：2021-12-14

    申请号：US17178700

    申请日：2021-02-18

    Applicant: Nokia Technologies Oy

    Inventor： Senad Bulja ,  Dirk Wiegner ,  Wolfgang Templ ,  Rose Kopf

    IPC: H04B1/16 ,  H04B1/03 ,  H03H7/21

    Abstract: A radio-frequency switching apparatus that can be used to turn a signal path on or off or to attenuate a radio-frequency signal. The switching apparatus comprises at least one radio-frequency input, at least one radio-frequency output, at least one transmission line providing a signal path between the at least one radio-frequency input and the at least one radio-frequency output, and at least one transition metal oxide portion. The radio-frequency switching apparatus also comprises direct current blocking means electrically coupled between the at least one transition metal portion and the at least one radio-frequency input. The radio-frequency switching apparatus also comprises biasing means for providing a bias across the at least one transition metal oxide portion such that power transferred between the radio-frequency input and the radio-frequency output is controlled by controlling the bias level across the at least one transition metal oxide portion.

    CONTROLLABLE RADIO FREQUENCY SWITCHING AND/OR SPLITTING DEVICE
    4.
    发明申请
    CONTROLLABLE RADIO FREQUENCY SWITCHING AND/OR SPLITTING DEVICE 有权

    公开(公告)号：US20220131251A1

    公开(公告)日：2022-04-28

    申请号：US17507045

    申请日：2021-10-21

    Applicant: Nokia Technologies Oy

    Inventor： Dirk Wiegner ,  Wolfgang Templ ,  Senad Bulja ,  Rose Kopf

    IPC: H01P3/12 ,  H01P3/16 ,  H01P5/12

    Abstract: An apparatus that is a voltage-controlled splitting and/or switching apparatus comprising a waveguide for a radio frequency signal comprising at least one input and at least two outputs, wherein the waveguide is a cavity waveguide or a polymer microwave fiber waveguide, and the waveguide comprises at least a first branch and a second branch, at least one element comprising voltage reactive material in between electrodes and extending, at least partly, across at least one of the first branch and the second branch, and a voltage control caused to apply voltage to the at least one element.

    Electrically tunable radio-frequency components and circuits
    5.
    发明授权
    Electrically tunable radio-frequency components and circuits 有权

    公开(公告)号：US11139544B2

    公开(公告)日：2021-10-05

    申请号：US16562871

    申请日：2019-09-06

    Applicant: Nokia Technologies Oy

    Inventor： Dirk Wiegner ,  Wolfgang Templ ,  Senad Bulja ,  Rose F. Kopf

    IPC: H01P1/18 ,  G02F1/163 ,  H01P1/20 ,  H01P3/08 ,  G02F1/01

    Abstract: An electrically controllable RF-circuit element that includes at least one layer of an electrochromic material sandwiched between two corresponding layers of a solid-electrolyte material and placed adjacent and along a length of RF transmission line. In one example embodiment, the electrically controllable RF-circuit element operates as a tunable band-stop (e.g., notch) filter whose stop band can be spectrally moved by changing one or more dc-bias voltages applied across the corresponding layer stack(s). In another example embodiment, the electrically controllable RF-circuit element operates as a tunable phase shifter whose phase-shifting characteristics can be changed by changing one or more dc-bias voltages applied across the corresponding layer stack(s).

    TUNABLE RADIO-FREQUENCY DEVICE HAVING ELECTROCHROMIC AND ELECTRO-ACTIVE MATERIALS
    6.
    发明申请
    TUNABLE RADIO-FREQUENCY DEVICE HAVING ELECTROCHROMIC AND ELECTRO-ACTIVE MATERIALS 有权

    公开(公告)号：US20210124231A1

    公开(公告)日：2021-04-29

    申请号：US16665578

    申请日：2019-10-28

    Applicant: Nokia Technologies Oy

    Inventor： Dirk Wiegner ,  Wolfgang Templ ,  Senad Bulja ,  Rose F. Kopf

    IPC: G02F1/163 ,  H01Q3/26 ,  H01Q9/04 ,  H01Q9/06 ,  H01L41/193

    Abstract: An electrically controllable RF circuit that includes an EC cell and an EAP-based actuator configured to produce relative movement of an electrode of the electrochromic cell and an electrically conducting patch or another electrode electromagnetically coupled thereto. In one embodiment, the RF circuit operates as a tunable patch antenna whose frequency characteristics can be changed by changing the bias voltages applied to the EC cell and EAP-based actuator. Advantageously, the capability to tune the antenna using two different tuning mechanisms (i.e., a dielectric-permittivity based tuning mechanism implemented using the EC cell and a geometry-based tuning mechanism implemented using the EAP-based actuator) provides more degrees of control over the pertinent antenna characteristics compared to what is available in some other antenna designs. In another embodiment, the RF circuit can operate as a tunable RF filter whose frequency characteristics can similarly be changed using these two different tuning mechanisms.

    Tunable radio-frequency device having electrochromic and electro-active materials
    8.
    发明授权
    Tunable radio-frequency device having electrochromic and electro-active materials 有权

    公开(公告)号：US11264720B2

    公开(公告)日：2022-03-01

    申请号：US16665578

    申请日：2019-10-28

    Applicant: Nokia Technologies Oy

    Inventor： Dirk Wiegner ,  Wolfgang Templ ,  Senad Bulja ,  Rose F. Kopf

    IPC: H01Q9/04 ,  H01Q9/06 ,  H01Q1/42 ,  H01L41/09 ,  H01P1/203

    Abstract: An electrically controllable RF circuit that includes an EC cell and an EAP-based actuator configured to produce relative movement of an electrode of the electrochromic cell and an electrically conducting patch or another electrode electromagnetically coupled thereto. In one embodiment, the RF circuit operates as a tunable patch antenna whose frequency characteristics can be changed by changing the bias voltages applied to the EC cell and EAP-based actuator. Advantageously, the capability to tune the antenna using two different tuning mechanisms (i.e., a dielectric-permittivity based tuning mechanism implemented using the EC cell and a geometry-based tuning mechanism implemented using the EAP-based actuator) provides more degrees of control over the pertinent antenna characteristics compared to what is available in some other antenna designs. In another embodiment, the RF circuit can operate as a tunable RF filter whose frequency characteristics can similarly be changed using these two different tuning mechanisms.

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