公开(公告)号：EP4352875A1

公开(公告)日：2024-04-17

申请号：EP22809999.0

申请日：2022-05-24

Applicant: Anlotek Limited

Inventor： NIELSEN, Jorgen Staal ,  NICHOLS, Richard

IPC: H03H17/02 ,  H03H9/46 ,  H03H9/64 ,  H03M1/00 ,  H04L25/03

CPC classification number: H03M3/402 ,  H03M3/344 ,  H03M3/454 ,  H03M3/37 ,  H03M3/372 ,  H03M3/40 ,  H03H17/0289 ,  H03H17/0291 ,  H03H9/6423 ,  H03H11/1221

公开(公告)号：EP4243284A3

公开(公告)日：2023-10-11

申请号：EP23182890.6

申请日：2016-11-23

Applicant: Anlotek Limited

Inventor： NICHOLS, Richard ,  NIELSEN, Jorgen Staal

IPC: H03H11/12

Abstract: A variable filter has a signal loop defined between a signal input and a signal output. A plurality of circuit elements connected in the signal loop, the plurality of circuit elements comprising a frequency tunable resonator, and an adjustable scaling block that applies a gain factor that is adjustable in a range that comprises a positive gain and a negative gain. A controller is connected to 1) tune the frequency tunable resonator; and to 2) adjust the gain factor of the adjustable scaling block between a negative gain factor to a positive gain factor providing for variable Q independent of frequency.

公开(公告)号：EP3381126A1

公开(公告)日：2018-10-03

申请号：EP16804863.5

申请日：2016-11-23

Applicant: Anlotek Limited

Inventor： NIELSEN, Jorgen Staal ,  NICHOLS, Richard

IPC: H03H11/12

CPC classification number: H03H11/1208 ,  H03G3/3042 ,  H03H11/1291 ,  H03H2210/012 ,  H03H2210/015

Abstract: A variable filter has a signal loop defined between a signal input and a signal output. A plurality of circuit elements connected in the signal loop, the plurality of circuit elements comprising a frequency tunable resonator, and an adjustable scaling block that applies a gain factor that is adjustable in a range that comprises a positive gain and a negative gain. A controller is connected to 1) tune the frequency tunable resonator; and to 2) adjust the gain factor of the adjustable scaling block between a negative gain factor to a positive gain factor providing for variable Q independent of frequency.

公开(公告)号：EP4243284A2

公开(公告)日：2023-09-13

申请号：EP23182890.6

申请日：2016-11-23

Applicant: Anlotek Limited

Inventor： NICHOLS, Richard ,  NIELSEN, Jorgen Staal

IPC: H03H11/12

Abstract: A variable filter has a signal loop defined between a signal input and a signal output. A plurality of circuit elements connected in the signal loop, the plurality of circuit elements comprising a frequency tunable resonator, and an adjustable scaling block that applies a gain factor that is adjustable in a range that comprises a positive gain and a negative gain. A controller is connected to 1) tune the frequency tunable resonator; and to 2) adjust the gain factor of the adjustable scaling block between a negative gain factor to a positive gain factor providing for variable Q independent of frequency.

公开(公告)号：EP4054076A1

公开(公告)日：2022-09-07

申请号：EP22159113.4

申请日：2022-02-28

Applicant: Anlotek Limited

Inventor： NIELSEN, Jorgen Staal ,  NICHOLS, Richard

IPC: H03H11/12 ,  H03H17/02

Abstract: An RF signal is processed by coupling an input signal into a signal loop, the signal loop comprising a resonator and a processing block, and filtering the input signal in the signal loop to produce an output signal by obtaining a plurality of resonator outputs from the resonator and processing the plurality of resonator outputs to generate feedback signals. The feedback signals are connected to a point upstream of the resonator. At least one of the plurality of resonator outputs is processed in the processing block. The signal loop is definable by a transfer function having poles, and the plurality of resonator outputs are processed such that the poles of the transfer function are independently controllable.