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Pat. 10230351 United States, Int. Cl.22 H03B 29/00, H02M 3/07, H03B 5/12, H03B 5/24, H03F 3/19, H03F 3/21, H03H 11/24, H03K 3/012, H03K 3/013, H03K 3/84, H03L 7/18, H04B 1/04, H04L 25/08, H04W 28/14. Variable frequency circuit in attenuator and/or negative voltage generator : Appl. N 15/238473 : Filed 16.08.2016 : Pub. 12.03.2019 : / Thomas Obkircher, William J. Domino, Bipul Agarwal ; Assignee Skyworks Solutions Inc ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10230351/en?oq=US10230351.html (дата обращения: ДД.ММ.ГГГГ).