公开(公告)号：US20230370022A1

公开(公告)日：2023-11-16

申请号：US18044354

申请日：2021-06-29

Applicant: Nokia Technologies Oy

Inventor： Dirk WIEGNER ,  Thales STEDILE RIBEIRO

IPC: H03F1/02 ,  H03F3/24 ,  H04B1/44

CPC classification number: H03F1/0205 ,  H03F3/245 ,  H04B1/44 ,  H03F2200/451

Abstract: Disclosed is an apparatus comprising means for transmitting a first signal via at least a first switch, a first amplifier, a second switch and a power amplifier, wherein an output of the second switch is connected to a power amplifier path comprising at least the power amplifier, while transmitting the first signal. An input of the first switch and the output of the second switch are switched to switch between transmitting and receiving. A second signal is received via at least the first switch, the first amplifier and the second switch, wherein the output of the second switch is disconnected from the power amplifier path while receiving the second signal.

公开(公告)号：US20210306020A1

公开(公告)日：2021-09-30

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 ,  H03H7/21 ,  H04B1/03

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：US20210313390A1

公开(公告)日：2021-10-07

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: H01L27/20 ,  H01L41/04 ,  H01L41/047 ,  H01L41/09 ,  H01L41/193

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.