(19)
(11) EP 4 158 774 A1

(12)

(43) Date of publication:
05.04.2023 Bulletin 2023/14

(21) Application number: 20734502.6

(22) Date of filing: 22.06.2020
(51) International Patent Classification (IPC): 
H03F 1/22(2006.01)
H03F 1/30(2006.01)
 H03F 1/02(2006.01)
H03F 3/45(2006.01)
(52) Cooperative Patent Classification (CPC):
H03F 1/22; H03F 3/45089; H03F 2203/45356; H03F 2203/45521; H03F 1/30; H03F 2200/447; H03F 1/0272; H03F 2200/405; H03F 2200/61
(86) International application number:
PCT/EP2020/067264
(87) International publication number:
WO 2021/259442 (30.12.2021 Gazette 2021/52)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
KH MA MD TN

(71) Applicant: Huawei Technologies Co., Ltd.
Longgang District, Shenzhen, Guangdong 518129 (CN)

(72) Inventors:
  • ROMANO, Luca
    80992 Munich (DE)
  • VECCHI, Federico
    80992 Munich (DE)

(74) Representative: Roth, Sebastian 
Mitscherlich PartmbB Patent- und Rechtsanwälte Sonnenstraße 33
80331 München
80331 München (DE)

   


(54) CASCODE AMPLIFIER WITH A FEEDBACK CIRCUIT FOR PROVIDING A BIAS VOLTAGE