公开(公告)号：US11770115B2

公开(公告)日：2023-09-26

申请号：US17235131

申请日：2021-04-20

Applicant: QUALCOMM Incorporated

Inventor： Changhan Hobie Yun ,  Hannu Laurila ,  Ville Lehtisalo ,  Ville Herman Brunou ,  Daniel Daeik Kim ,  Paragkumar Ajaybhai Thadesar ,  Nosun Park ,  Wei Cheng

IPC: H03J3/20 ,  H03H3/00 ,  H04B1/18 ,  H03H7/01

CPC classification number: H03J3/20 ,  H03H3/00 ,  H03H7/0123 ,  H04B1/18

Abstract: An exemplary tunable circuit includes an inductor coupled to a node and a first capacitor coupled to the node. The tunable circuit also includes a variable capacitor coupled to the node, such that a total capacitance of the tunable circuit depends on a fixed capacitance of the first capacitor and a variable capacitance of the variable capacitor. In an example, the inductor and the first capacitor are both included in a passive device and the variable capacitor is in a semiconductor device. The variable capacitor allows the total capacitance to be modified for the purpose of, for example, calibrating the capacitance to account for manufacturing variations, and/or adjusting to a frequency range of operation used by wireless devices in a region of the world. The first capacitor may be a higher quality capacitor providing a larger portion of the total capacitance than the variable capacitor.

公开(公告)号：US20220123735A1

公开(公告)日：2022-04-21

申请号：US17235131

申请日：2021-04-20

Applicant: QUALCOMM Incorporated

Inventor： Changhan Hobie Yun ,  Hannu Laurila ,  Ville Lehtisalo ,  Ville Herman Brunou ,  Daniel Daeik Kim ,  Paragkumar Ajaybhai Thadesar ,  Nosun Park ,  Wei Cheng

IPC: H03J3/20 ,  H03H7/01 ,  H04B1/18 ,  H03H3/00

Abstract: An exemplary tunable circuit includes an inductor coupled to a node and a first capacitor coupled to the node. The tunable circuit also includes a variable capacitor coupled to the node, such that a total capacitance of the tunable circuit depends on a fixed capacitance of the first capacitor and a variable capacitance of the variable capacitor. In an example, the inductor and the first capacitor are both included in a passive device and the variable capacitor is in a semiconductor device. The variable capacitor allows the total capacitance to be modified for the purpose of, for example, calibrating the capacitance to account for manufacturing variations, and/or adjusting to a frequency range of operation used by wireless devices in a region of the world. The first capacitor may be a higher quality capacitor providing a larger portion of the total capacitance than the variable capacitor.

公开(公告)号：US10340860B1

公开(公告)日：2019-07-02

申请号：US16138765

申请日：2018-09-21

Applicant: QUALCOMM INCORPORATED

Inventor： Chuan Wang ,  Wei Cheng ,  Kevin Hsi Huai Wang

IPC: H04B1/18 ,  H03F1/26 ,  H03F1/56

Abstract: A circuit includes a passive low gain low noise amplifier (LNA) configured to receive a communication signal, an active low gain LNA configured to receive the communication signal, a shared coupling circuit, outputs of the passive low gain LNA and the active low gain LNA coupled to the shared coupling circuit, an output circuit, an output of the shared coupling circuit coupled to the output circuit, and a high gain LNA configured to receive the communication signal, the high gain LNA coupled to the output circuit along a path that bypasses the shared coupling circuit.