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

IPC: H01P3/12 ,  H01P3/16 ,  H01P5/12

CPC classification number: 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.

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.

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.

公开(公告)号：US10903568B2

公开(公告)日：2021-01-26

申请号：US16196517

申请日：2018-11-20

Applicant: NOKIA TECHNOLOGIES OY

Inventor： Senad Bulja ,  Rose Kopf ,  Robert Cahill ,  Majid Norooziarab

IPC: H01Q3/34 ,  H01Q1/48 ,  H01Q9/04 ,  H01Q21/00 ,  H01Q21/06

Abstract: An antenna element includes a patch antenna and a microstrip line separated by an electrochromic material to tune the element. A reflectarray of a plurality of antenna elements is formed on a substrate. The dielectric permitivities of the electrochromic material may be controlled both during manufacture and during operation of the antenna to provide a phase shift to the antenna elements and beamform a signal radiated by the antenna. A bias line may be used to change a shape, direction or circular polarity of a beam radiating from the antenna.