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Pat. 10637408 United States, Int. Cl.22 H03F 1/32, H02M 3/07, H03F 1/02, H03F 3/19, H03F 3/21, H02M 1/00. Envelope tracking voltage tracker circuit and related power management circuit : Appl. N 15/986948 : Filed 23.05.2018 : Pub. 28.04.2020 : / Nadim Khlat, Michael R. Kay ; Assignee Qorvo Us Inc ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10637408/en?oq=US10637408.html (дата обращения: ДД.ММ.ГГГГ).