-
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
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).
-
公开(公告)号：US11811124B2
公开(公告)日：2023-11-07
申请号：US17507045
申请日：2021-10-21
Applicant: Nokia Technologies Oy
Inventor： Dirk Wiegner , Wolfgang Tempi , Senad Bulja , Rose Kopf
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.
-
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
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.
-
公开(公告)号：US11678582B2
公开(公告)日：2023-06-13
申请号：US16837717
申请日：2020-04-01
Applicant: Nokia Technologies OY
Inventor： Senad Bulja , Dirk Wiegner , Wolfgang Templ , Rose F Kopf
IPC: H01L41/47 , H01L27/20 , H01L41/04 , H01L41/047 , H01L41/09 , H01L41/193 , G06F17/14
CPC classification number: H01L27/20 , H01L41/042 , H01L41/0475 , H01L41/0986 , H01L41/193 , G06F17/14
Abstract: An apparatus includes a dielectric tile array including a plurality of dielectric tiles; and a plurality of electroactive (EA) material blocks configured to expand or contract in response to being actuated by the application of an actuation voltage.
-
Patent Agency Ranking
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
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.
-
公开(公告)号：US11546037B2
公开(公告)日：2023-01-03
申请号：US16151751
申请日：2018-10-04
Applicant: Nokia Technologies Oy
Inventor： Dirk Wiegner , George Hotopan
IPC: H04B7/06 , H04B7/12 , H04B7/0452
Abstract: A multi antenna system, comprising a plurality of transceivers for an antenna array operable for communication with wireless terminals, wherein the multi antenna system comprises a radio controller, adapted to operate a first transceiver for radio communication within a first bandwidth, wherein the first transceiver is limited by hardware to radio communication within the first bandwidth, a second transceiver adapted for radio communication within a second bandwidth selectable from a plurality of bandwidths, a radio controller adapted to operate, depending on a data rate demand, either the first transceiver or the second transceiver or both for radio communication.
-
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
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.
-
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
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).
-
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.
-
-
-
-
-
-
-
-
Search Results
9
records
(took 0.048 seconds)
