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：US20200153076A1

公开(公告)日：2020-05-14

申请号：US16632940

申请日：2018-05-15

Applicant: Nokia Technologies Oy

Inventor： Senad Bulja ,  Wolfgang Templ ,  Rose Fasano Kopf ,  Florian Pivit

IPC: H01P7/10 ,  H01P1/203 ,  H01P3/16 ,  B32B7/02 ,  B32B17/10

Abstract: Composite substrate (1300; CS) for radio frequency, RF, signals comprising at least a first layer (1310; 1310a) of di-electric material and a second layer (1320; 1320a) of dielectric material, and at least one conductor layer (1330; 1330a) of an electrically conductive material arranged between said first layer (1310; 1310a) and said second layer (1320; 1320a), wherein said first layer (1310; 310a) and said second layer (1320; 1320a) and said conductor layer (1330; 1330a) each comprise optically transparent material.

公开(公告)号：US20200083590A1

公开(公告)日：2020-03-12

申请号：US16468893

申请日：2017-12-08

Applicant: Nokia Technologies Oy

Inventor： Efstratios Doumanis ,  Senad Bulja

IPC: H01P7/06 ,  H01P1/205

Abstract: A resonator assembly and method are disclosed. The resonator assembly comprises: a resonant chamber defined by a first wall, a second wall opposing the first wall and side walls extending between the first wall and the second wall; a first resonator comprising a first resonator element and a first resonator cap, the first resonator element having a first grounded end and an first open end, the first resonator element being grounded at the first grounded end on the first wall and extending into the resonant chamber, the first resonator cap having a first grounded portion and an first open portion, the first resonator cap being grounded at the first grounded portion on the second wall and extending into the resonant chamber to at least partially surround the first open end of the first resonator element with the first open portion for electrical field loading of the first resonator element by the first resonator cap; and a second resonator comprising a second resonator element and a second resonator cap located for electrical field loading of the second resonator element by the second resonator cap, the second resonator element being located for magnetic field coupling between the first resonator element and the second resonator element. In this way, a compact resonator assembly is provided having high operational performance. The provision of resonators having resonator elements and resonator caps helps to reduce the height of the resonator assembly to around one eighth of the operating wavelength. The provision of the resonator caps helps to contain the electrical field from the resonator elements, which enables adjacent resonator elements to be located closer together to provide for enhanced magnetic field coupling therebetween.