公开(公告)号：US12255663B2

公开(公告)日：2025-03-18

申请号：US18185325

申请日：2023-03-16

Applicant: QUALCOMM Incorporated

Inventor： Masoud Moslehi Bajestan ,  Arpit Gupta ,  Wu-Hsin Chen ,  Vinod Panikkath

IPC: H03L7/099 ,  H03L1/02 ,  H03L7/087

Abstract: In certain aspects, a system includes a voltage-controlled oscillator (VCO), a phase detector configured to receive a reference signal, a frequency divider coupled between an output of the VCO and the phase detector, a phase-to-current circuit coupled to an output of the phase detector, and a temperature circuit configured to output a temperature-dependent voltage. The system also includes a switching circuit configured to selectively couple the phase-to-current circuit to an input of the VCO and configured to selectively couple the temperature circuit to the input of the VCO.

公开(公告)号：US11736071B2

公开(公告)日：2023-08-22

申请号：US17208864

申请日：2021-03-22

Applicant: QUALCOMM Incorporated

Inventor： Ayush Mittal ,  Sreenivasa Mallia ,  Arpit Gupta ,  Krishnaswamy Thiagarajan ,  Bhushan Shanti Asuri

IPC: H03F1/22 ,  H03F1/42 ,  H03F3/24

CPC classification number: H03F1/42 ,  H03F3/245 ,  H03F2200/09 ,  H03F2200/36 ,  H03F2200/451

Abstract: Certain aspects of the present disclosure provide an amplifier. The amplifier generally includes an amplifier core circuit configured to amplify a radio frequency signal and having a first output and a second output; a transformer coupled to the amplifier core circuit, the transformer having a primary winding and a secondary winding, the primary winding being coupled to the first output and the second output of the amplifier core circuit, the secondary winding being coupled to an output node of the amplifier; and a variable resistance circuit coupled in parallel with the primary winding.