Patent SG-11201908970T-A (SG)
Title: Apparatus and methods for bias switching of power amplifiers
Inventor: GEBEYEHU NETSANET
IPC: H03F1/02
Filed: 2018-04-02
Abstract: BIASCONTROL , r BIAS NETWORKS POWER MANAGEMENT (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 11 October 2018 (11.10.2018) WIPO I PCT omit IIl °nolo munom oimIE (10) International Publication Number WO 2018/187245 Al 100 RF_OUT J (51) International Patent Classification: H03F 1/02 (2006.01) H03F 3/24 (2006.01) (21) International Application Number: PCT/US2018/025757 (22) International Filing Date: 02 April 2018 (02.04.2018) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 62/481,368 04 April 2017 (04.04.2017) US (71) Applicant: SKYWORKS SOLUTIONS, INC. [US/US]; 20 Sylvan Road, Woburn, MA 01801 (US). (72) Inventors: GEBEYEHU, Netsanet; 20 Sylvan Road, Woburn, MA 01801 (US). JAYARAMAN, Srivatsan; 20 Sylvan Road, Woburn, MA 01801 (US). ANTHONY, Ed- ward, James; 20 Sylvan Road, Woburn, MA 01801 (US). (74) Agent: JUANG, Agnes; Knobbe Martens, 2040 Main Street, 14th Floor, Irvine, CA 92614 (US). (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, = (54) Title: APPARATUS AND METHODS FOR BIAS SWITCHING OF POWER AMPLIFIERS 751 76J 83 RF_IN INPUT INTERSTAGE MATCH — 84- 1 MATCH (57) : Apparatus and methods for bias switching of power amplifiers are provided herein. In certain configurations, a power cc N that controls a voltage level of a supply voltage of the power amplifier, and a bias control circuit that biases the power amplifier. amplifier system includes a power amplifier that provides amplification to a radio frequency (RF) signal, a power management circuit The power management circuit is operable in multiple supply control modes, such as an average power tracking (APT) mode and an 00 envelope tracking (ET) mode. The bias control circuit is configured to switch a bias of the power amplifier based on the supply control mode of the power management circuit. O C [Continued on next page] WO 2018/187245 Al MIDEDIMOMOIDEIREEMOMOHOMOIDEIROMEEN MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Declarations under Rule 4.17: as to applicant's entitlement to apply for and be granted a patent (Rule 4.17(H)) as to the applicant's entitlement to claim the priority of the earlier application (Rule 4.17(iii)) Published: — with international search report (Art. 21(3))