公开(公告)号：US20210159594A1

公开(公告)日：2021-05-27

申请号：US16799089

申请日：2020-02-24

Applicant: Infineon Technologies AG

Inventor： Marc Tiebout ,  Daniele Dal Maistro ,  Ivan Tsvelykh ,  Samo Vehovc ,  Peter Pfann

IPC: H01Q3/26 ,  H04B17/12 ,  G01R29/10 ,  G01R29/08

Abstract: A calibration method for a phased array system comprises sequentially injecting a tone into a first plurality of antenna elements of an antenna array, receiving the tone by a second plurality of antenna elements of the antenna array through parasitic coupling between the first plurality of antenna elements and the second plurality of antenna elements, measuring a plurality of phase errors between the first plurality of antenna elements and the second plurality of antenna elements, populating a lookup table with the plurality of phase errors, and calibrating a plurality of phase shifters associated with a plurality of channels in the phased array system using the plurality of phase errors in the lookup table.

公开(公告)号：US11245381B2

公开(公告)日：2022-02-08

申请号：US16210637

申请日：2018-12-05

Applicant: Infineon Technologies AG

Inventor： Stefan Helmut Schmalzl ,  Peter Pfann ,  Ruediger Bauder ,  Hans-Joerg Timme

IPC: H03H9/54 ,  H03H7/01 ,  H03H9/64 ,  H03H9/52 ,  H03H9/05 ,  H03H9/60 ,  H03H9/58 ,  H04B1/00 ,  H03H3/02 ,  H03H11/12 ,  H04B1/10 ,  H04B1/40 ,  H03H9/02 ,  H03H9/17 ,  H03H9/48 ,  H03H9/00 ,  H03H9/66 ,  H04B1/04 ,  H04B1/50 ,  H03H7/12 ,  H03H7/46 ,  H04B1/525 ,  H03F3/19 ,  H03F3/21 ,  H03H9/70 ,  H04B1/18 ,  H03J3/20 ,  H03H9/205 ,  H01L41/187 ,  H03J1/00

Abstract: In accordance with an embodiment, an RF system includes a transmit path having a first tunable transmit band stop filter, and a power amplifier coupled to an output of the first tunable transmit band stop filter, where the first tunable transmit band stop filter is configured reject a receive frequency and pass a transmit frequency; a receive path comprising an LNA; and a duplex filter having a transmit path port coupled to an output of the power amplifier, a receive path port coupled to an input of the LNA, and an antenna port, where the duplex filter is configured to pass the transmit frequency and reject the receive frequency between the antenna port and the transmit path port, pass the receive frequency and reject the transmit frequency between the antenna port and the receive path port.

公开(公告)号：US11012051B2

公开(公告)日：2021-05-18

申请号：US16210670

申请日：2018-12-05

Applicant: Infineon Technologies AG

Inventor： Stefan Helmut Schmalzl ,  Peter Pfann ,  Ruediger Bauder ,  Hans-Joerg Timme

IPC: H03H9/58 ,  H03H7/01 ,  H03H9/54 ,  H03H9/64 ,  H03H9/52 ,  H03H9/05 ,  H03H9/60 ,  H04B1/00 ,  H03H3/02 ,  H03H11/12 ,  H04B1/10 ,  H04B1/40 ,  H03H9/02 ,  H03H9/17 ,  H03H9/48 ,  H03H9/00 ,  H03H9/66 ,  H04B1/04 ,  H04B1/50 ,  H03H7/12 ,  H03H7/46 ,  H04B1/525 ,  H03F3/19 ,  H03F3/21 ,  H03H9/70 ,  H04B1/18 ,  H03J3/20 ,  H03H9/205 ,  H01L41/187 ,  H03J1/00

Abstract: In accordance with an embodiment, an RF system includes a transmit path having a transmit RF filter and an adjustable transmit phase shifter/matching network coupled between the transmit RF filter and a transmit antenna port, where the adjustable transmit phase shifter/matching network is configured to transform an impedance of the transmit RF filter at a receive frequency from a first lower impedance to a first higher impedance at the transmit antenna port; and a receive path having a receive RF filter and an adjustable receive phase shifter/matching network coupled between the receive RF filter and a receive antenna port, where the adjustable receive phase shifter/matching network is configured to transform an impedance of the receive RF filter at a transmit frequency from a second lower impedance to a second higher impedance at the receive antenna port.

公开(公告)号：US10979021B2

公开(公告)日：2021-04-13

申请号：US16210582

申请日：2018-12-05

Applicant: Infineon Technologies AG

Inventor： Peter Pfann ,  Stefan Helmut Schmalzl ,  Ruediger Bauder ,  Hans-Joerg Timme

IPC: H03H9/54 ,  H03H7/01 ,  H03H9/64 ,  H03H9/52 ,  H03H9/05 ,  H03H9/60 ,  H03H9/58 ,  H04B1/00 ,  H03H3/02 ,  H03H11/12 ,  H04B1/10 ,  H04B1/40 ,  H03H9/02 ,  H03H9/17 ,  H03H9/48 ,  H03H9/00 ,  H03H9/66 ,  H04B1/04 ,  H04B1/50 ,  H03H7/12 ,  H03H7/46 ,  H04B1/525 ,  H03F3/19 ,  H03F3/21 ,  H03H9/70 ,  H04B1/18 ,  H03J3/20 ,  H03H9/205 ,  H01L41/187 ,  H03J1/00

Abstract: In accordance with an embodiment, a method of operating an RF system includes generating a first RF signal having a first frequency; filtering the generated first RF signal to form a first filtered transmitted signal; producing a first coupled signal and a first transmitted signal from the first filtered transmitted signal; transmitting the first transmitted signal; transmitting a second RF signal having a second frequency; bandpass filtering the first coupled signal to form a first tunable bandpass filtered signal; and measuring a parameter of the first tunable bandpass filtered signal.

公开(公告)号：US10965274B2

公开(公告)日：2021-03-30

申请号：US16210555

申请日：2018-12-05

Applicant: Infineon Technologies AG

Inventor： Ruediger Bauder ,  Hans-Joerg Timme ,  Stefan Helmut Schmalzl ,  Peter Pfann

IPC: H03H9/54 ,  H03H9/58 ,  H03H7/01 ,  H03H9/64 ,  H03H9/52 ,  H03H9/05 ,  H03H9/60 ,  H04B1/00 ,  H03H3/02 ,  H03H11/12 ,  H04B1/10 ,  H04B1/40 ,  H03H9/02 ,  H03H9/17 ,  H03H9/48 ,  H03H9/00 ,  H03H9/66 ,  H04B1/04 ,  H04B1/50 ,  H03H7/12 ,  H03H7/46 ,  H04B1/525 ,  H03F3/19 ,  H03F3/21 ,  H03H9/70 ,  H04B1/18 ,  H03J3/20 ,  H03H9/205 ,  H01L41/187 ,  H03J1/00

Abstract: In accordance with an embodiment, a method of operating an RF system includes filtering a first wideband RF signal using a wideband filter bank. Filtering the first RF signal includes separating the first wideband RF signal into frequency cluster signals, where each frequency cluster signal of the frequency cluster signals includes different frequency ranges, the first wideband RF signal includes multiple RF bands, and each of the different frequency ranges comprises a plurality of RF bands of the multiple RF bands. The method further includes band stop filtering at least one of the frequency cluster signals to produce a band stopped frequency cluster signal.

公开(公告)号：US10291194B2

公开(公告)日：2019-05-14

申请号：US15728264

申请日：2017-10-09

Applicant: Infineon Technologies AG

Inventor： Nikolay Ilkov ,  Andreas Baenisch ,  Peter Pfann ,  Hans-Dieter Wohlmuth

IPC: H03G3/30 ,  H03F1/02 ,  H03F1/22 ,  H03F1/56 ,  H03F3/193 ,  H03F3/45 ,  H03B5/12

Abstract: In accordance with an embodiment, a circuit includes: a replica input transistor, a first replica cascode transistor, an active current source, and an active cascode biasing circuit. The active current source is configured to set a current flowing through the first replica cascode transistor and the replica input transistor to a predetermined value by adjusting a voltage of a control node of the replica input transistor; and an active cascode biasing circuit including a first output coupled to the control node of the first replica cascode transistor, and the active cascode biasing circuit configured to set a drain voltage of the replica input transistor to a predetermined voltage by adjusting a voltage of the control node of the first replica cascode transistor.

公开(公告)号：US20190109574A1

公开(公告)日：2019-04-11

申请号：US15728264

申请日：2017-10-09

Applicant: Infineon Technologies AG

Inventor： Nikolay Ilkov ,  Andreas Baenisch ,  Peter Pfann ,  Hans-Dieter Wohlmuth

IPC: H03G3/30 ,  H03F3/193 ,  H03F1/22 ,  H03F1/02 ,  H03F1/56 ,  H03F3/45 ,  H03B5/12

Abstract: In accordance with an embodiment, a circuit includes: a replica input transistor, a first replica cascode transistor, an active current source, and an active cascode biasing circuit. The active current source is configured to set a current flowing through the first replica cascode transistor and the replica input transistor to a predetermined value by adjusting a voltage of a control node of the replica input transistor; and an active cascode biasing circuit including a first output coupled to the control node of the first replica cascode transistor, and the active cascode biasing circuit configured to set a drain voltage of the replica input transistor to a predetermined voltage by adjusting a voltage of the control node of the first replica cascode transistor.

公开(公告)号：US20190181907A1

公开(公告)日：2019-06-13

申请号：US16210582

申请日：2018-12-05

Applicant: Infineon Technologies AG

Inventor： Peter Pfann ,  Stefan Helmut Schmalzl ,  Ruediger Bauder ,  Hans-Joerg Timme

IPC: H04B1/50 ,  H04B1/04 ,  H04B1/00 ,  H03H9/48

Abstract: In accordance with an embodiment, a method of operating an RF system includes generating a first RF signal having a first frequency; filtering the generated first RF signal to form a first filtered transmitted signal; producing a first coupled signal and a first transmitted signal from the first filtered transmitted signal; transmitting the first transmitted signal; transmitting a second RF signal having a second frequency; bandpass filtering the first coupled signal to form a first tunable bandpass filtered signal; and measuring a parameter of the first tunable bandpass filtered signal.

公开(公告)号：US20190181839A1

公开(公告)日：2019-06-13

申请号：US16210555

申请日：2018-12-05

Applicant: Infineon Technologies AG

Inventor： Ruediger Bauder ,  Hans-Joerg Timme ,  Stefan Helmut Schmalzl ,  Peter Pfann

IPC: H03H11/12 ,  H04B1/10 ,  H04B1/40

Abstract: In accordance with an embodiment, a method of operating an RF system includes filtering a first wideband RF signal using a wideband filter bank. Filtering the first RF signal includes separating the first wideband RF signal into frequency cluster signals, where each frequency cluster signal of the frequency cluster signals includes different frequency ranges, the first wideband RF signal includes multiple RF bands, and each of the different frequency ranges comprises a plurality of RF bands of the multiple RF bands. The method further includes band stop filtering at least one of the frequency cluster signals to produce a band stopped frequency cluster signal.

公开(公告)号：US11322837B2

公开(公告)日：2022-05-03

申请号：US16799089

申请日：2020-02-24

Applicant: Infineon Technologies AG

Inventor： Marc Tiebout ,  Daniele Dal Maistro ,  Ivan Tsvelykh ,  Samo Vehovc ,  Peter Pfann

IPC: H01Q3/26 ,  G01R29/08 ,  G01R29/10 ,  H04B17/12

Abstract: A calibration method for a phased array system comprises sequentially injecting a tone into a first plurality of antenna elements of an antenna array, receiving the tone by a second plurality of antenna elements of the antenna array through parasitic coupling between the first plurality of antenna elements and the second plurality of antenna elements, measuring a plurality of phase errors between the first plurality of antenna elements and the second plurality of antenna elements, populating a lookup table with the plurality of phase errors, and calibrating a plurality of phase shifters associated with a plurality of channels in the phased array system using the plurality of phase errors in the lookup table.