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Pat. 9923520 United States, Int. Cl.22 H03F 1/30, H02M 1/08, H02M 3/155, H03F 1/02, H03F 3/19, H03F 3/21. Switching power supply for RF power amplifiers : Appl. N 15/272139 : Filed 21.09.2016 : Pub. 20.03.2018 : / Moataz Abdelsamie Abdelfattah, Iulian Mirea, Song Shi ; Assignee Qualcomm Inc ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US9923520/en?oq=US9923520.html (дата обращения: ДД.ММ.ГГГГ).